Add trace to InstantiationException

.github/dependabot.yml

@@ -1,10 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "monthly"
-  - package-ecosystem: "maven"
-    directory: "/"
-    schedule:
-      interval: "monthly"

.github/workflows/ci.yml

@@ -8,15 +8,24 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - name: Checkout Code
+        uses: actions/checkout@v2
 
-      - uses: actions/setup-java@v3
+      - name: Set Up Java
+        uses: actions/setup-java@v1
         with:
-          distribution: 'temurin'
-          java-version: '17'
-          cache: 'maven'
+          java-version: 16
 
-      # Install Spigot dependencies if necessary.
+      # Use cache to speed up build
+      - name: Cache Maven Repo
+        uses: actions/cache@v2
+        id: cache
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+
+      # Install Spigot dependencies.
+      # This script uses Maven to check all required installations and ensure that they are present.
       - name: Install Spigot Dependencies
         run: . scripts/install_spigot_dependencies.sh
 
@@ -26,59 +35,37 @@ jobs:
       # Upload artifacts
       - name: Upload Distributable Jar
         id: upload-final
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v2
         with:
           name: dist
           path: ./target/OpenInv.jar
       - name: Upload API Jar
         id: upload-api
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v2
         with:
           name: api
           path: ./api/target/openinvapi*.jar
 
-  merge-dependabot:
-    name: Auto-merge Dependabot PRs
-    needs: [ build ]
-    if: "github.event.name == 'pull_request_target'
-      && github.actor == 'dependabot[bot]'
-      && contains( github.event.pull_request.labels.*.name, 'java')"
-    runs-on: ubuntu-latest
-    steps:
-      - name: Approve
-        uses: hmarr/auto-approve-action@v2.2.1
-        with:
-          github-token: "${{ secrets.GITHUB_TOKEN }}"
-      - name: Merge
-        uses: pascalgn/automerge-action@v0.15.3
-        env:
-          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-          MERGE_LABELS: "dependencies"
-          MERGE_METHOD: "squash"
-
   release:
     name: Create Github Release
     needs: [ build ]
     if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:
-      # Fetch all history - used to assemble changelog.
-      - uses: actions/checkout@v3
+      - name: Checkout Code
+        uses: actions/checkout@v2
         with:
           fetch-depth: 0
 
       - name: Set Release Variables
         run: bash ./scripts/set_release_env.sh
 
-      - name: Download Artifact
-        uses: actions/download-artifact@v3
-        with:
-          name: dist
-          path: dist
+      - name: Download Artifacts
+        uses: actions/download-artifact@v2
 
       - name: Create Release
         id: create-release
-        uses: softprops/action-gh-release@v0.1.14
+        uses: softprops/action-gh-release@v0.1.5
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
           fetch-depth: 0
 
       - name: Fetch Github Release Asset
-        uses: dsaltares/fetch-gh-release-asset@1.0.0
+        uses: dsaltares/fetch-gh-release-asset@0.0.5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           version: ${{ github.event.release.id }}
@@ -26,7 +26,7 @@ jobs:
       - name: Create CurseForge Release
         uses: itsmeow/curseforge-upload@v3
         with:
-          token: "${{ secrets.CURSEFORGE_TOKEN }}"
+          token: ${{ secrets.CURSEFORGE_TOKEN }}
           project_id: 31432
           game_endpoint: minecraft
           file_path: ./OpenInv.jar

README.MD

@@ -124,16 +124,22 @@ The OpenInv API is available via [JitPack](https://jitpack.io/).
 ```
 
 ### Compilation
-To compile, the relevant Spigot jars must be installed in the local repository.
-As OpenInv is compiled against Mojang's mappings, you must run BuildTools with the `--remapped` argument:  
-`java -jar BuildTools.jar --remapped --rev $serverVersion`  
-`$serverVersion` is the version of the server, i.e. `1.18.1`
+To compile, the relevant Spigot jars must be installed in your local repository using the `install` plugin:
+```shell
+mvn install:install-file -Dpackaging=jar -Dfile=spigot-1.8-R0.1-SNAPSHOT.jar \
+    -DgroupId=org.spigotmc -DartifactId=spigot -Dversion=1.8-R0.1-SNAPSHOT
+```
+Note that BuildTools automatically installs produced files. If you use BuildTools to compile Spigot locally, you don't need to install it manually.  
+If you want to use Paper as a dependency, you can install it by executing PaperClip with the property `paperclip.install` set to true:
+```shell
+wget -O paperclip.jar https://papermc.io/api/v1/paper/1.16.5/latest/download
+java -jar -Dpaperclip.install=true paperclip.jar
+```
 
-To compile for a single version, specify the module you are targeting:  
-`mvn -pl $moduleName -am clean install`  
-`$moduleName` is the name of the module, i.e. `internal/v1_18_R1`.
+To compile for a single version, specify the NMS revision you are targeting: `mvn -pl <NMS module> -am clean install`
+
+To compile for a set of versions, you'll need to use a profile. The only provided profile is `all`. Select a profile using the `-P` argument: `mvn clean package -am -P all`
 
-To compile for a set of versions, use a profile. Select a profile using the `-P` argument:  
-`mvn clean package -am -P all`  
-The only provided profile is `all`. The final file is `target/OpenInv.jar`  
 For more information, check out the [official Maven guide](http://maven.apache.org/guides/introduction/introduction-to-profiles.html).
+
+The final file is `target/OpenInv.jar`

api/pom.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>openinvparent</artifactId>
     <groupId>com.lishid</groupId>
-    <version>4.2.1</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
   <artifactId>openinvapi</artifactId>

api/src/main/java/com/lishid/openinv/IOpenInv.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -36,120 +36,53 @@ import org.jetbrains.annotations.Nullable;
 
 /**
  * Interface defining behavior for the OpenInv plugin.
+ *
+ * @author Jikoo
  */
 public interface IOpenInv {
 
     /**
-     * Check if the server version is supported by OpenInv.
-     *
-     * @return true if the server version is supported
-     */
-    boolean isSupportedVersion();
-
-    /**
-     * Check the configuration value for whether OpenInv saves player data when unloading players. This is exclusively
-     * for users who do not allow editing of inventories, only viewing, and wish to prevent any possibility of bugs such
-     * as lishid#40. If true, OpenInv will not ever save any edits made to players.
+     * Check the configuration value for whether or not OpenInv saves player data when unloading
+     * players. This is exclusively for users who do not allow editing of inventories, only viewing,
+     * and wish to prevent any possibility of bugs such as lishid#40. If true, OpenInv will not ever
+     * save any edits made to players.
      *
      * @return false unless configured otherwise
      */
     boolean disableSaving();
 
     /**
-     * Check the configuration value for whether OpenInv allows offline access. If true, OpenInv will not load or allow
-     * modification of players while they are not online. This does not prevent other plugins from using existing loaded
-     * players who have gone offline.
+     * Gets the active ISilentContainer implementation.
      *
-     * @return false unless configured otherwise
-     * @since 4.2.0
-     */
-    boolean disableOfflineAccess();
-
-    /**
-     * Get the active {@link IAnySilentContainer} implementation.
-     *
-     * @return the active implementation for the server version
+     * @return the ISilentContainer
      * @throws IllegalStateException if the server version is unsupported
      */
     @NotNull IAnySilentContainer getAnySilentContainer();
 
     /**
-     * @deprecated Use static {@link InventoryAccess} methods.
+     * Gets the active IInventoryAccess implementation.
+     *
+     * @return the IInventoryAccess
+     * @throws IllegalStateException if the server version is unsupported
      */
-    @Deprecated(forRemoval = true)
+    @Deprecated
     default @NotNull IInventoryAccess getInventoryAccess() {
         return new InventoryAccess();
     }
 
     /**
-     * @deprecated Use {@link #getAnyContainerStatus(OfflinePlayer)}. Not all containers are chests.
-     */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default boolean getPlayerAnyChestStatus(@NotNull OfflinePlayer offline) {
-        return getAnyContainerStatus(offline);
-    }
-
-    /**
-     * Get whether a user has AnyContainer mode enabled.
+     * Gets the provided player's AnyChest setting.
      *
-     * @param offline the user to obtain the state of
-     * @return true if AnyContainer mode is enabled
+     * @param player the OfflinePlayer
+     * @return true if AnyChest is enabled
+     * @throws IllegalStateException if the server version is unsupported
      */
-    boolean getAnyContainerStatus(@NotNull OfflinePlayer offline);
+    boolean getPlayerAnyChestStatus(@NotNull OfflinePlayer player);
 
     /**
-     * @deprecated Use {@link #setAnyContainerStatus(OfflinePlayer, boolean)}. Not all containers are chests.
-     */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default void setPlayerAnyChestStatus(@NotNull OfflinePlayer offline, boolean status) {
-        setAnyContainerStatus(offline, status);
-    }
-
-    /**
-     * Set whether a user has AnyContainer mode enabled.
+     * Gets a unique identifier by which the OfflinePlayer can be referenced. Using the value
+     * returned to look up a Player will generally be much faster for later implementations.
      *
-     * @param offline the user to set the state of
-     * @param status the state of the mode
-     */
-    void setAnyContainerStatus(@NotNull OfflinePlayer offline, boolean status);
-
-    /**
-     * @deprecated Use {@link #getSilentContainerStatus(OfflinePlayer)}. Not all containers are chests.
-     */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default boolean getPlayerSilentChestStatus(@NotNull OfflinePlayer offline) {
-        return getSilentContainerStatus(offline);
-    }
-
-    /**
-     * Get whether a user has SilentContainer mode enabled.
-     *
-     * @param offline the user to obtain the state of
-     * @return true if SilentContainer mode is enabled
-     */
-    boolean getSilentContainerStatus(@NotNull OfflinePlayer offline);
-
-    /**
-     * @deprecated Use {@link #setSilentContainerStatus(OfflinePlayer, boolean)}. Not all containers are chests.
-     */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default void setPlayerSilentChestStatus(@NotNull OfflinePlayer offline, boolean status) {
-        setSilentContainerStatus(offline, status);
-    }
-
-    /**
-     * Set whether a user has SilentContainer mode enabled.
-     *
-     * @param offline the user to set the state of
-     * @param status the state of the mode
-     */
-    void setSilentContainerStatus(@NotNull OfflinePlayer offline, boolean status);
-
-    /**
-     * Get a unique identifier by which the OfflinePlayer can be referenced.
-     *
-     * @deprecated Use {@link OfflinePlayer#getUniqueId()} and {@link UUID#toString()}. This was necessary for non-UUID
-     * versions of Minecraft, but support for them has been dropped for years.
      * @param offline the OfflinePlayer
      * @return the identifier
      * @throws IllegalStateException if the server version is unsupported
@@ -159,65 +92,61 @@ public interface IOpenInv {
     }
 
     /**
-     * Get an {@link ISpecialEnderChest} for a user.
+     * Gets a player's SilentChest setting.
      *
-     * @param player the {@link Player} owning the inventory
-     * @param online whether the owner is currently online
-     * @return the created inventory
+     * @param offline the OfflinePlayer
+     * @return true if SilentChest is enabled
      * @throws IllegalStateException if the server version is unsupported
-     * @throws InstantiationException if there was an issue creating the inventory
+     */
+    boolean getPlayerSilentChestStatus(@NotNull OfflinePlayer offline);
+
+    /**
+     * Gets an ISpecialEnderChest for the given Player.
+     *
+     * @param player the Player
+     * @param online true if the Player is currently online
+     * @return the ISpecialEnderChest
+     * @throws IllegalStateException  if the server version is unsupported
+     * @throws InstantiationException if the ISpecialEnderChest could not be instantiated
      */
     @NotNull ISpecialEnderChest getSpecialEnderChest(@NotNull Player player, boolean online) throws InstantiationException;
 
     /**
-     * Get an {@link ISpecialPlayerInventory} for a user.
+     * Gets an ISpecialPlayerInventory for the given Player.
      *
-     * @param player the {@link Player} owning the inventory
-     * @param online whether the owner is currently online
-     * @return the created inventory
-     * @throws IllegalStateException if the server version is unsupported
-     * @throws InstantiationException if there was an issue creating the inventory
+     * @param player the Player
+     * @param online true if the Player is currently online
+     * @return the ISpecialPlayerInventory
+     * @throws IllegalStateException  if the server version is unsupported
+     * @throws InstantiationException if the ISpecialPlayerInventory could not be instantiated
      */
     @NotNull ISpecialPlayerInventory getSpecialInventory(@NotNull Player player, boolean online) throws InstantiationException;
 
     /**
-     * Open an {@link ISpecialInventory} for a {@link Player}.
+     * Checks if the server version is supported by OpenInv.
      *
-     * @param player the viewer
-     * @param inventory the inventory to open
-     * @return the resulting {@link InventoryView}
+     * @return true if the server version is supported
      */
-    @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory);
+    boolean isSupportedVersion();
 
     /**
-     * Check if a {@link Player} is currently loaded by OpenInv.
+     * Load a Player from an OfflinePlayer. May return null under some circumstances.
      *
-     * @param playerUuid the {@link UUID} of the {@code Player}
-     * @return whether the {@code Player} is loaded
-     * @since 4.2.0
-     */
-    boolean isPlayerLoaded(@NotNull UUID playerUuid);
-
-    /**
-     * Load a {@link Player} from an {@link OfflinePlayer}. If the user has not played before or the default world for
-     * the server is not loaded, this will return {@code null}.
-     *
-     * @param offline the {@code OfflinePlayer} to load a {@code Player} for
-     * @return the loaded {@code Player}
+     * @param offline the OfflinePlayer to load a Player for
+     * @return the Player, or null
      * @throws IllegalStateException if the server version is unsupported
      */
     @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline);
 
     /**
-     * Match an existing {@link OfflinePlayer}. If the name is a {@link UUID#toString() UUID string}, this will only
-     * return the user if they have actually played on the server before, unlike {@link Bukkit#getOfflinePlayer(UUID)}.
-     *
-     * <p>This method is potentially very heavily blocking. It should not ever be called on the
+     * Get an OfflinePlayer by name.
+     * <p>
+     * Note: This method is potentially very heavily blocking. It should not ever be called on the
      * main thread, and if it is, a stack trace will be displayed alerting server owners to the
      * call.
      *
-     * @param name the string to match
-     * @return the user with the closest matching name
+     * @param name the name of the Player
+     * @return the OfflinePlayer with the closest matching name or null if no players have ever logged in
      */
     default @Nullable OfflinePlayer matchPlayer(@NotNull String name) {
 
@@ -225,7 +154,7 @@ public interface IOpenInv {
         if (Bukkit.getServer().isPrimaryThread()) {
             this.getLogger().warning("Call to OpenInv#matchPlayer made on the main thread!");
             this.getLogger().warning("This can cause the server to hang, potentially severely.");
-            this.getLogger().log(Level.WARNING, "Current stack trace", new Throwable("Current stack trace"));
+            this.getLogger().log(Level.WARNING, new Throwable("Current stack trace"), () -> "Current stack trace");
         }
 
         OfflinePlayer player;
@@ -233,38 +162,32 @@ public interface IOpenInv {
         try {
             UUID uuid = UUID.fromString(name);
             player = Bukkit.getOfflinePlayer(uuid);
-            // Ensure player is an existing player.
+            // Ensure player is a real player, otherwise return null
             if (player.hasPlayedBefore() || player.isOnline()) {
                 return player;
             }
-            // Return null otherwise.
-            return null;
         } catch (IllegalArgumentException ignored) {
             // Not a UUID
         }
 
-        // Exact online match first.
         player = Bukkit.getServer().getPlayerExact(name);
 
         if (player != null) {
             return player;
         }
 
-        // Exact offline match second - ensure offline access works when matchable users are online.
         player = Bukkit.getServer().getOfflinePlayer(name);
 
         if (player.hasPlayedBefore()) {
             return player;
         }
 
-        // Inexact online match.
         player = Bukkit.getServer().getPlayer(name);
 
         if (player != null) {
             return player;
         }
 
-        // Finally, inexact offline match.
         float bestMatch = 0;
         for (OfflinePlayer offline : Bukkit.getServer().getOfflinePlayers()) {
             if (offline.getName() == null) {
@@ -289,58 +212,96 @@ public interface IOpenInv {
     }
 
     /**
-     * @deprecated OpenInv uses action bar chat for notifications. Whether they show is based on language settings.
+     * Open an ISpecialInventory for a Player.
+     *
+     * @param player the Player
+     * @param inventory the ISpecialInventory
+     * @return the InventoryView for the opened ISpecialInventory
      */
-    @Deprecated(forRemoval = true)
+    @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory);
+
+    /**
+     * Check the configuration value for whether or not OpenInv displays a notification to the user
+     * when a container is activated with AnyChest.
+     *
+     * @return true unless configured otherwise
+     * @deprecated OpenInv uses action bar chat for notifications. Whether or not they show is based on language settings.
+     */
+    @Deprecated
     default boolean notifyAnyChest() {
         return true;
     }
 
     /**
-     * @deprecated OpenInv uses action bar chat for notifications. Whether they show is based on language settings.
+     * Check the configuration value for whether or not OpenInv displays a notification to the user
+     * when a container is activated with SilentChest.
+     *
+     * @return true unless configured otherwise
+     * @deprecated OpenInv uses action bar chat for notifications. Whether or not they show is based on language settings.
      */
-    @Deprecated(forRemoval = true)
+    @Deprecated
     default boolean notifySilentChest() {
         return true;
     }
 
     /**
-     * @deprecated see {@link #retainPlayer(Player, Plugin)}
+     * Mark a Player as no longer in use by a Plugin to allow OpenInv to remove it from the cache
+     * when eligible.
+     *
+     * @param player the Player
+     * @param plugin the Plugin no longer holding a reference to the Player
+     * @throws IllegalStateException if the server version is unsupported
      */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default void releasePlayer(@NotNull Player player, @NotNull Plugin plugin) {}
+    void releasePlayer(@NotNull Player player, @NotNull Plugin plugin);
 
     /**
-     * @deprecated OpenInv no longer uses an internal cache beyond maintaining copies of currently open inventories.
-     * If you wish to use/modify a player, ensure either {@link IOpenInv#isPlayerLoaded(UUID)} is false or the player
-     * instance is the same memory address as the one in use by OpenInv.
-     * <pre>
-     *  public &#64;NotNull Player savePlayerData(&#64;NotNull Player player) {
-     *     IOpenInv openInv = ...
-     *     if (!openInv.disableSaving() && openInv.isPlayerLoaded(player.getUniqueId())) {
-     *         Player openInvLoadedPlayer = openInv.loadPlayer(myInUsePlayer);
-     *         if (openInvLoadedPlayer != player) {
-     *             // The copy loaded by OpenInv is not the same as our loaded copy. Push our changes.
-     *             copyPlayerModifications(player, openInvLoadedPlayer);
-     *         }
-     *         // OpenInv will handle saving data when the player is unloaded.
-     *         // Optionally, to be sure our changes will persist, save now.
-     *         // openInvLoadedPlayer.saveData();
-     *         return openInvLoadedPlayer;
-     *     }
+     * Mark a Player as in use by a Plugin to prevent it from being removed from the cache. Used to
+     * prevent issues with multiple copies of the same Player being loaded such as lishid#49.
+     * Changes made to loaded copies overwrite changes to the others when saved, leading to
+     * duplication bugs and more.
+     * <p>
+     * When finished with the Player object, be sure to call {@link #releasePlayer(Player, Plugin)}
+     * to prevent the cache from keeping it stored until the plugin is disabled.
+     * <p>
+     * When using a Player object from OpenInv, you must handle the Player coming online, replacing
+     * your Player reference with the Player from the PlayerJoinEvent. In addition, you must change
+     * any values in the Player to reflect any unsaved alterations to the existing Player which do
+     * not affect the inventory or ender chest contents.
+     * <p>
+     * OpenInv only saves player data when unloading a Player from the cache, and then only if
+     * {@link #disableSaving()} returns false. If you are making changes that OpenInv does not cause
+     * to persist when a Player logs in as noted above, it is suggested that you manually call
+     * {@link Player#saveData()} when releasing your reference to ensure your changes persist.
      *
-     *     player.saveData();
-     *     return player;
-     * }
-     * </pre>
+     * @param player the Player
+     * @param plugin the Plugin holding the reference to the Player
+     * @throws IllegalStateException if the server version is unsupported
      */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    default void retainPlayer(@NotNull Player player, @NotNull Plugin plugin) {}
+    void retainPlayer(@NotNull Player player, @NotNull Plugin plugin);
 
     /**
-     * Forcibly close inventories of and unload any cached data for a user.
+     * Sets a player's AnyChest setting.
      *
-     * @param offline the {@link OfflinePlayer} to unload
+     * @param offline the OfflinePlayer
+     * @param status the status
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void setPlayerAnyChestStatus(@NotNull OfflinePlayer offline, boolean status);
+
+    /**
+     * Sets a player's SilentChest setting.
+     *
+     * @param offline the OfflinePlayer
+     * @param status the status
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void setPlayerSilentChestStatus(@NotNull OfflinePlayer offline, boolean status);
+
+    /**
+     * Forcibly unload a cached Player's data.
+     *
+     * @param offline the OfflinePlayer to unload
+     * @throws IllegalStateException if the server version is unsupported
      */
     void unload(@NotNull OfflinePlayer offline);
 

api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,6 +24,7 @@ import org.bukkit.block.BlockState;
 import org.bukkit.block.EnderChest;
 import org.bukkit.block.ShulkerBox;
 import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Directional;
 import org.bukkit.block.data.type.Chest;
 import org.bukkit.entity.Cat;
 import org.bukkit.entity.Player;
@@ -33,38 +34,39 @@ import org.jetbrains.annotations.NotNull;
 public interface IAnySilentContainer {
 
     /**
-     * Forcibly open the container at the given coordinates for the Player. This will open blocked containers! Be sure
-     * to check {@link #isAnyContainerNeeded(Block)} first if that is not desirable.
+     * Opens the container at the given coordinates for the Player. If you do not want blocked
+     * containers to open, be sure to check {@link #isAnyContainerNeeded(Player, Block)}
+     * first.
      *
-     * @param player the {@link Player} opening the container
-     * @param silent whether the container's noise is to be silenced
-     * @param block  the {@link Block} of the container
+     * @param player    the Player opening the container
+     * @param silent    whether the container's noise is to be silenced
+     * @param block     the Block
      * @return true if the container can be opened
      */
     boolean activateContainer(@NotNull Player player, boolean silent, @NotNull Block block);
 
     /**
-     * Perform operations required to close the current container silently.
+     * Closes the Player's currently open container silently, if necessary.
      *
-     * @param player the {@link Player} closing a container
+     * @param player the Player closing a container
      */
     void deactivateContainer(@NotNull Player player);
 
     /**
-     * @param player the player opening the container
-     * @param block  the {@link Block} of the container
-     * @return true if the container is blocked
      * @deprecated use {@link #isAnyContainerNeeded(Block)}
+     * @param player the player opening the container
+     * @param block the block
+     * @return true if the container is blocked
      */
-    @Deprecated(forRemoval = true, since = "4.1.9")
+    @Deprecated
     default boolean isAnyContainerNeeded(@NotNull Player player, @NotNull Block block) {
         return isAnyContainerNeeded(block);
     }
 
     /**
-     * Check if the container at the given coordinates is blocked.
+     * Checks if the container at the given coordinates is blocked.
      *
-     * @param block the {@link Block} of the container
+     * @param block  the Block
      * @return true if the container is blocked
      */
     default boolean isAnyContainerNeeded(@NotNull Block block) {
@@ -81,12 +83,27 @@ public interface IAnySilentContainer {
         }
 
         // Shulker boxes require 1/2 a block clear in the direction they open.
-        if (blockState instanceof ShulkerBox shulker) {
-            if (isShulkerBlocked(shulker)) {
+        if (blockState instanceof ShulkerBox) {
+            BoundingBox boundingBox = block.getBoundingBox();
+            if (boundingBox.getVolume() > 1) {
+                // Shulker box is already open.
+                return false;
+            }
+
+            BlockData blockData = block.getBlockData();
+            if (!(blockData instanceof Directional)) {
+                // Shouldn't be possible. Just in case, demand AnyChest.
                 return true;
             }
+
+            Directional directional = (Directional) blockData;
+            BlockFace face = directional.getFacing();
+            boundingBox.shift(face.getDirection());
+            // Return whether or not bounding boxes overlap.
+            return block.getRelative(face, 1).getBoundingBox().overlaps(boundingBox);
         }
 
+
         if (!(blockState instanceof org.bukkit.block.Chest)) {
             return false;
         }
@@ -96,10 +113,11 @@ public interface IAnySilentContainer {
         }
 
         BlockData blockData = block.getBlockData();
-        if (!(blockData instanceof Chest chest) || ((Chest) blockData).getType() == Chest.Type.SINGLE) {
+        if (!(blockData instanceof Chest) || ((Chest) blockData).getType() == Chest.Type.SINGLE) {
             return false;
         }
 
+        Chest chest = (Chest) blockData;
         int ordinal = (chest.getFacing().ordinal() + 4 + (chest.getType() == Chest.Type.RIGHT ? -1 : 1)) % 4;
         BlockFace relativeFace = BlockFace.values()[ordinal];
         org.bukkit.block.Block relative = block.getRelative(relativeFace);
@@ -109,10 +127,11 @@ public interface IAnySilentContainer {
         }
 
         BlockData relativeData = relative.getBlockData();
-        if (!(relativeData instanceof Chest relativeChest)) {
+        if (!(relativeData instanceof Chest)) {
             return false;
         }
 
+        Chest relativeChest = (Chest) relativeData;
         if (relativeChest.getFacing() != chest.getFacing()
                 || relativeChest.getType() != (chest.getType() == Chest.Type.RIGHT ? Chest.Type.LEFT : Chest.Type.RIGHT)) {
             return false;
@@ -121,31 +140,17 @@ public interface IAnySilentContainer {
         return isChestBlocked(relative);
     }
 
-    /**
-     * Check if a {@link ShulkerBox} cannot be opened under ordinary circumstances.
-     *
-     * @param shulkerBox the shulker box container
-     * @return whether the container is blocked
-     */
-    boolean isShulkerBlocked(@NotNull ShulkerBox shulkerBox);
-
-    /**
-     * Check if a chest cannot be opened under ordinary circumstances.
-     *
-     * @param chest the chest block
-     * @return whether the container is blocked
-     */
-    default boolean isChestBlocked(@NotNull Block chest) {
+    default boolean isChestBlocked(Block chest) {
         org.bukkit.block.Block relative = chest.getRelative(0, 1, 0);
         return relative.getType().isOccluding()
                 || chest.getWorld().getNearbyEntities(BoundingBox.of(relative), entity -> entity instanceof Cat).size() > 0;
     }
 
     /**
-     * Check if the given {@link Block} is a container which can be unblocked or silenced.
+     * Checks if the given block is a container which can be unblocked or silenced.
      *
-     * @param block the potential container
-     * @return true if the type is a supported container
+     * @param block the BlockState
+     * @return true if the Block is a supported container
      */
     default boolean isAnySilentContainer(@NotNull Block block) {
         if (block.getType() == Material.ENDER_CHEST) {

api/src/main/java/com/lishid/openinv/internal/IInventoryAccess.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,47 +16,49 @@
 
 package com.lishid.openinv.internal;
 
-import com.lishid.openinv.util.InventoryAccess;
 import org.bukkit.inventory.Inventory;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-/**
- * @deprecated Use static {@link InventoryAccess} methods.
- */
-@Deprecated(forRemoval = true)
+@Deprecated
 public interface IInventoryAccess {
 
     /**
-     * @deprecated Use static {@link InventoryAccess} methods.
+     * Gets an ISpecialEnderChest from an Inventory or null if the Inventory is not backed by an
+     * ISpecialEnderChest.
+     *
+     * @param inventory the Inventory
+     * @return the ISpecialEnderChest or null
      */
-    @Deprecated(forRemoval = true)
-    default @Nullable ISpecialEnderChest getSpecialEnderChest(@NotNull Inventory inventory) {
-        return InventoryAccess.getEnderChest(inventory);
-    }
+    @Deprecated
+    @Nullable ISpecialEnderChest getSpecialEnderChest(@NotNull Inventory inventory);
 
     /**
-     * @deprecated Use static {@link InventoryAccess} methods.
+     * Gets an ISpecialPlayerInventory from an Inventory or null if the Inventory is not backed by
+     * an ISpecialPlayerInventory.
+     *
+     * @param inventory the Inventory
+     * @return the ISpecialPlayerInventory or null
      */
-    @Deprecated(forRemoval = true)
-    default @Nullable ISpecialPlayerInventory getSpecialPlayerInventory(@NotNull Inventory inventory) {
-        return InventoryAccess.getPlayerInventory(inventory);
-    }
+    @Deprecated
+    @Nullable ISpecialPlayerInventory getSpecialPlayerInventory(@NotNull Inventory inventory);
 
     /**
-     * @deprecated Use static {@link InventoryAccess} methods.
+     * Check if an Inventory is an ISpecialEnderChest implementation.
+     *
+     * @param inventory the Inventory
+     * @return true if the Inventory is backed by an ISpecialEnderChest
      */
-    @Deprecated(forRemoval = true)
-    default boolean isSpecialEnderChest(@NotNull Inventory inventory) {
-        return InventoryAccess.isEnderChest(inventory);
-    }
+    @Deprecated
+    boolean isSpecialEnderChest(@NotNull Inventory inventory);
 
     /**
-     * @deprecated Use static {@link InventoryAccess} methods.
+     * Check if an Inventory is an ISpecialPlayerInventory implementation.
+     *
+     * @param inventory the Inventory
+     * @return true if the Inventory is backed by an ISpecialPlayerInventory
      */
-    @Deprecated(forRemoval = true)
-    default boolean isSpecialPlayerInventory(@NotNull Inventory inventory) {
-        return InventoryAccess.isPlayerInventory(inventory);
-    }
+    @Deprecated
+    boolean isSpecialPlayerInventory(@NotNull Inventory inventory);
 
 }

api/src/main/java/com/lishid/openinv/internal/ISpecialEnderChest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,9 +16,6 @@
 
 package com.lishid.openinv.internal;
 
-/**
- * An {@link ISpecialInventory} representing an ender chest.
- */
 public interface ISpecialEnderChest extends ISpecialInventory {
 
 }

api/src/main/java/com/lishid/openinv/internal/ISpecialInventory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,43 +21,38 @@ import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
 import org.jetbrains.annotations.NotNull;
 
-/**
- * Interface defining behavior for special inventories backed by other inventories' content listings.
- */
 public interface ISpecialInventory {
 
     /**
-     * Get the {@link Inventory} associated with this {@code ISpecialInventory}.
+     * Gets the Inventory associated with this ISpecialInventory.
      *
-     * @return the Bukkit inventory
+     * @return the Inventory
      */
     @NotNull Inventory getBukkitInventory();
 
     /**
-     * Set the owning {@link Player} instance to a newly-joined user.
+     * Sets the Player associated with this ISpecialInventory online.
      *
-     * @param player the user coming online
+     * @param player the Player coming online
      */
     void setPlayerOnline(@NotNull Player player);
 
     /**
-     * Mark the owner of the inventory offline.
+     * Sets the Player associated with this ISpecialInventory offline.
      */
     void setPlayerOffline();
 
     /**
-     * Get whether the inventory is being viewed by any users.
+     * Gets whether or not this ISpecialInventory is in use.
      *
-     * @return true if the inventory is being viewed
+     * @return true if the ISpecialInventory is in use
      */
-    default boolean isInUse() {
-        return !getBukkitInventory().getViewers().isEmpty();
-    }
+    boolean isInUse();
 
     /**
-     * Get the {@link Player} who owns the inventory.
+     * Gets the Player associated with this ISpecialInventory.
      *
-     * @return the {@link HumanEntity} who owns the inventory
+     * @return the HumanEntity
      */
     @NotNull HumanEntity getPlayer();
 

api/src/main/java/com/lishid/openinv/internal/ISpecialPlayerInventory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,35 +16,6 @@
 
 package com.lishid.openinv.internal;
 
-import java.util.List;
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.inventory.Inventory;
-
-/**
- * An {@link ISpecialInventory} representing a player inventory.
- */
 public interface ISpecialPlayerInventory extends ISpecialInventory {
 
-    /*
-     * Player inventory usage varies from all other inventories - as the inventory is technically open at all times,
-     * if the player is online or has been online while the inventory is open, they are in the viewer list.
-     */
-    @Override
-    default boolean isInUse() {
-        Inventory inventory = getBukkitInventory();
-        List<HumanEntity> viewers = inventory.getViewers();
-
-        if (viewers.size() != 1) {
-            return !viewers.isEmpty();
-        }
-
-        HumanEntity viewer = viewers.get(0);
-
-        if (!viewer.getUniqueId().equals(getPlayer().getUniqueId())) {
-            return true;
-        }
-
-        return viewer.getOpenInventory().getTopInventory().equals(inventory);
-    }
-
 }

api/src/main/java/com/lishid/openinv/util/InventoryAccess.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,13 +20,14 @@ import com.lishid.openinv.internal.IInventoryAccess;
 import com.lishid.openinv.internal.ISpecialEnderChest;
 import com.lishid.openinv.internal.ISpecialInventory;
 import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import org.bukkit.Bukkit;
 import org.bukkit.inventory.Inventory;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-public final class InventoryAccess implements IInventoryAccess {
+public class InventoryAccess implements IInventoryAccess {
 
     private static Class<?> craftInventory = null;
     private static Method getInventory = null;
@@ -35,14 +36,16 @@ public final class InventoryAccess implements IInventoryAccess {
         String packageName = Bukkit.getServer().getClass().getPackage().getName();
         try {
             craftInventory = Class.forName(packageName + ".inventory.CraftInventory");
+        } catch (ClassNotFoundException ignored) {}
+        try {
             getInventory = craftInventory.getDeclaredMethod("getInventory");
-        } catch (ClassNotFoundException | NoSuchMethodException ignored) {}
+        } catch (NoSuchMethodException ignored) {}
     }
 
     /**
      * @deprecated use {@link #isUsable()}
      */
-    @Deprecated(forRemoval = true)
+    @Deprecated
     public static boolean isUseable() {
         return isUsable();
     }
@@ -51,51 +54,25 @@ public final class InventoryAccess implements IInventoryAccess {
         return craftInventory != null && getInventory != null;
     }
 
-    /**
-     * Check if an {@link Inventory} is an {@link ISpecialPlayerInventory} implementation.
-     *
-     * @param inventory the Bukkit inventory
-     * @return true if backed by the correct implementation
-     */
     public static boolean isPlayerInventory(@NotNull Inventory inventory) {
         return getPlayerInventory(inventory) != null;
     }
 
-    /**
-     * Get the {@link ISpecialPlayerInventory} backing an {@link Inventory}. Returns {@code null} if the inventory is
-     * not backed by the correct class.
-     *
-     * @param inventory the Bukkit inventory
-     * @return the backing implementation if available
-     */
     public static @Nullable ISpecialPlayerInventory getPlayerInventory(@NotNull Inventory inventory) {
         return getSpecialInventory(ISpecialPlayerInventory.class, inventory);
     }
 
-    /**
-     * Check if an {@link Inventory} is an {@link ISpecialEnderChest} implementation.
-     *
-     * @param inventory the Bukkit inventory
-     * @return true if backed by the correct implementation
-     */
     public static boolean isEnderChest(@NotNull Inventory inventory) {
         return getEnderChest(inventory) != null;
     }
 
-    /**
-     * Get the {@link ISpecialEnderChest} backing an {@link Inventory}. Returns {@code null} if the inventory is
-     * not backed by the correct class.
-     *
-     * @param inventory the Bukkit inventory
-     * @return the backing implementation if available
-     */
     public static @Nullable ISpecialEnderChest getEnderChest(@NotNull Inventory inventory) {
         return getSpecialInventory(ISpecialEnderChest.class, inventory);
     }
 
     private static <T extends ISpecialInventory> @Nullable T getSpecialInventory(@NotNull Class<T> expected, @NotNull Inventory inventory) {
         Object inv;
-        if (isUsable() && craftInventory.isAssignableFrom(inventory.getClass())) {
+        if (craftInventory != null && getInventory != null && craftInventory.isAssignableFrom(inventory.getClass())) {
             try {
                 inv = getInventory.invoke(inventory);
                 if (expected.isInstance(inv)) {
@@ -104,8 +81,7 @@ public final class InventoryAccess implements IInventoryAccess {
             } catch (ReflectiveOperationException ignored) {}
         }
 
-        // Use reflection to find the IInventory
-        inv = ReflectionHelper.grabObjectByType(inventory, expected);
+        inv = grabFieldOfTypeFromObject(expected, inventory);
 
         if (expected.isInstance(inv)) {
             return expected.cast(inv);
@@ -114,10 +90,45 @@ public final class InventoryAccess implements IInventoryAccess {
         return null;
     }
 
-    /**
-     * @deprecated Do not create a new instance to use static methods.
-     */
-    @Deprecated(forRemoval = true, since = "4.2.0")
-    public InventoryAccess() {}
+    private static <T> @Nullable T grabFieldOfTypeFromObject(final Class<T> type, final Object object) {
+        // Use reflection to find the IInventory
+        Class<?> clazz = object.getClass();
+        T result = null;
+        for (Field f : clazz.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (type.isAssignableFrom(f.getDeclaringClass())) {
+                try {
+                    result = type.cast(f.get(object));
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        return result;
+    }
+
+    @Deprecated
+    @Override
+    public @Nullable ISpecialEnderChest getSpecialEnderChest(@NotNull Inventory inventory) {
+        return getEnderChest(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public @Nullable ISpecialPlayerInventory getSpecialPlayerInventory(@NotNull Inventory inventory) {
+        return getPlayerInventory(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public boolean isSpecialEnderChest(@NotNull Inventory inventory) {
+        return isEnderChest(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public boolean isSpecialPlayerInventory(@NotNull Inventory inventory) {
+        return isPlayerInventory(inventory);
+    }
 
 }

api/src/main/java/com/lishid/openinv/util/ReflectionHelper.java

@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2011-2021 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.util;
-
-import java.lang.reflect.Field;
-import org.jetbrains.annotations.Nullable;
-
-/**
- * A utility for making reflection easier.
- */
-public final class ReflectionHelper {
-
-    private ReflectionHelper() {}
-
-    /**
-     * Grab an {@link Object} stored in a {@link Field} of another {@code Object}.
-     *
-     * <p>This casts the field to the correct class. Any issues will result in a {@code null} return value.
-     *
-     * @param fieldType the {@link Class} of {@code Object} stored in the {@code Field}
-     * @param holder the containing {@code Object}
-     * @param <T> the type of stored {@code Object}
-     * @return the first matching {@code Object} or {@code null} if none match
-     */
-    public static <T> @Nullable T grabObjectByType(final Object holder, final Class<T> fieldType) {
-        Field field = grabFieldByType(holder.getClass(), fieldType);
-
-        if (field != null) {
-            try {
-                return fieldType.cast(field.get(holder));
-            } catch (IllegalAccessException ignored) {
-                // Ignore issues obtaining field
-            }
-        }
-
-        return null;
-    }
-
-    /**
-     * Grab a {@link Field} of an {@link Object}
-     *
-     * @param fieldType the {@link Class} of the object
-     * @param holderType the containing {@code Class}
-     * @return the first matching object or {@code null} if none match
-     */
-    public static @Nullable Field grabFieldByType(Class<?> holderType, Class<?> fieldType) {
-        for (Field field : holderType.getDeclaredFields()) {
-            field.setAccessible(true);
-            if (fieldType.isAssignableFrom(field.getType())) {
-                return field;
-            }
-        }
-
-        if (holderType.getSuperclass() != null) {
-            return grabFieldByType(fieldType, holderType.getSuperclass());
-        }
-
-        return null;
-    }
-
-}

assembly/pom.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.lishid</groupId>
     <artifactId>openinvparent</artifactId>
-    <version>4.2.1</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
   <artifactId>openinvassembly</artifactId>

internal/v1_16_R3/pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -23,35 +23,22 @@
     <artifactId>openinvparent</artifactId>
     <groupId>com.lishid</groupId>
     <relativePath>../../pom.xml</relativePath>
-    <version>4.2.1</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
-  <artifactId>openinvadapter1_19_R1</artifactId>
-  <name>OpenInvAdapter1_19_R1</name>
-
-  <properties>
-    <maven.compiler.source>17</maven.compiler.source>
-    <maven.compiler.target>17</maven.compiler.target>
-    <spigot.version>1.19.1-R0.1-SNAPSHOT</spigot.version>
-  </properties>
+  <artifactId>openinvadapter1_16_R3</artifactId>
+  <name>OpenInvAdapter1_16_R3</name>
 
   <dependencies>
-    <dependency>
-      <groupId>org.spigotmc</groupId>
-      <artifactId>spigot-api</artifactId>
-      <version>${spigot.version}</version>
-    </dependency>
     <dependency>
       <artifactId>spigot</artifactId>
       <groupId>org.spigotmc</groupId>
       <scope>provided</scope>
-      <version>${spigot.version}</version>
-      <classifier>remapped-mojang</classifier>
+      <version>1.16.5-R0.1-SNAPSHOT</version>
     </dependency>
     <dependency>
       <artifactId>openinvapi</artifactId>
       <groupId>com.lishid</groupId>
-      <scope>provided</scope>
     </dependency>
     <dependency>
       <artifactId>openinvplugincore</artifactId>
@@ -67,18 +54,10 @@
     <plugins>
       <plugin>
         <artifactId>maven-shade-plugin</artifactId>
-        <!-- Cannot use minimizeJar: MSHADE-366 -->
-        <configuration>
-          <minimizeJar>false</minimizeJar>
-        </configuration>
       </plugin>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
       </plugin>
-      <plugin>
-        <groupId>net.md-5</groupId>
-        <artifactId>specialsource-maven-plugin</artifactId>
-      </plugin>
     </plugins>
   </build>
 

internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/AnySilentContainer.java

@@ -0,0 +1,245 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_16_R3;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IAnySilentContainer;
+import java.lang.reflect.Field;
+import net.minecraft.server.v1_16_R3.Block;
+import net.minecraft.server.v1_16_R3.BlockBarrel;
+import net.minecraft.server.v1_16_R3.BlockChest;
+import net.minecraft.server.v1_16_R3.BlockChestTrapped;
+import net.minecraft.server.v1_16_R3.BlockPosition;
+import net.minecraft.server.v1_16_R3.BlockPropertyChestType;
+import net.minecraft.server.v1_16_R3.BlockShulkerBox;
+import net.minecraft.server.v1_16_R3.ChatMessage;
+import net.minecraft.server.v1_16_R3.Container;
+import net.minecraft.server.v1_16_R3.ContainerChest;
+import net.minecraft.server.v1_16_R3.Containers;
+import net.minecraft.server.v1_16_R3.EntityHuman;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.EnumGamemode;
+import net.minecraft.server.v1_16_R3.IBlockData;
+import net.minecraft.server.v1_16_R3.IChatBaseComponent;
+import net.minecraft.server.v1_16_R3.ITileInventory;
+import net.minecraft.server.v1_16_R3.InventoryEnderChest;
+import net.minecraft.server.v1_16_R3.InventoryLargeChest;
+import net.minecraft.server.v1_16_R3.PlayerInteractManager;
+import net.minecraft.server.v1_16_R3.PlayerInventory;
+import net.minecraft.server.v1_16_R3.TileEntity;
+import net.minecraft.server.v1_16_R3.TileEntityChest;
+import net.minecraft.server.v1_16_R3.TileEntityEnderChest;
+import net.minecraft.server.v1_16_R3.TileEntityLootable;
+import net.minecraft.server.v1_16_R3.TileInventory;
+import net.minecraft.server.v1_16_R3.World;
+import org.bukkit.Material;
+import org.bukkit.Statistic;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+
+public class AnySilentContainer implements IAnySilentContainer {
+
+    private Field playerInteractManagerGamemode;
+
+    public AnySilentContainer() {
+        try {
+            this.playerInteractManagerGamemode = PlayerInteractManager.class.getDeclaredField("gamemode");
+            this.playerInteractManagerGamemode.setAccessible(true);
+        } catch (NoSuchFieldException | SecurityException e) {
+            System.err.println("[OpenInv] Unable to directly write player gamemode! SilentChest will fail.");
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public boolean activateContainer(@NotNull final Player bukkitPlayer, final boolean silentchest,
+                                     @NotNull final org.bukkit.block.Block bukkitBlock) {
+
+        // Silent ender chest is API-only
+        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
+            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        EntityPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        final World world = player.world;
+        final BlockPosition blockPosition = new BlockPosition(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        final TileEntity tile = world.getTileEntity(blockPosition);
+
+        if (tile == null) {
+            return false;
+        }
+
+        if (tile instanceof TileEntityEnderChest) {
+            // Anychest ender chest. See net.minecraft.server.BlockEnderChest
+            InventoryEnderChest enderChest = player.getEnderChest();
+            enderChest.a((TileEntityEnderChest) tile);
+            player.openContainer(new TileInventory((containerCounter, playerInventory, ignored) -> {
+                Containers<?> containers = PlayerDataManager.getContainers(enderChest.getSize());
+                int rows = enderChest.getSize() / 9;
+                return new ContainerChest(containers, containerCounter, playerInventory, enderChest, rows);
+            }, new ChatMessage("container.enderchest")));
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        if (!(tile instanceof ITileInventory)) {
+            return false;
+        }
+
+        ITileInventory tileInventory = (ITileInventory) tile;
+        IBlockData blockData = world.getType(blockPosition);
+        Block block = blockData.getBlock();
+
+        if (block instanceof BlockChest) {
+
+            BlockPropertyChestType chestType = blockData.get(BlockChest.c);
+
+            if (chestType != BlockPropertyChestType.SINGLE) {
+
+                BlockPosition adjacentBlockPosition = blockPosition.shift(BlockChest.h(blockData));
+                IBlockData adjacentBlockData = world.getType(adjacentBlockPosition);
+
+                if (adjacentBlockData.getBlock() == block) {
+
+                    BlockPropertyChestType adjacentChestType = adjacentBlockData.get(BlockChest.c);
+
+                    if (adjacentChestType != BlockPropertyChestType.SINGLE && chestType != adjacentChestType
+                            && adjacentBlockData.get(BlockChest.FACING) == blockData.get(BlockChest.FACING)) {
+
+                        TileEntity adjacentTile = world.getTileEntity(adjacentBlockPosition);
+
+                        if (adjacentTile instanceof TileEntityChest && tileInventory instanceof  TileEntityChest) {
+                            TileEntityChest rightChest = chestType == BlockPropertyChestType.RIGHT ? ((TileEntityChest) tileInventory) : (TileEntityChest) adjacentTile;
+                            TileEntityChest leftChest = chestType == BlockPropertyChestType.RIGHT ? (TileEntityChest) adjacentTile : ((TileEntityChest) tileInventory);
+
+                            if (silentchest && (rightChest.lootTable != null || leftChest.lootTable != null)) {
+                                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                                return false;
+                            }
+
+                            tileInventory = new ITileInventory() {
+                                public Container createMenu(int containerCounter, PlayerInventory playerInventory, EntityHuman entityHuman) {
+                                    leftChest.d(playerInventory.player);
+                                    rightChest.d(playerInventory.player);
+                                    return ContainerChest.b(containerCounter, playerInventory, new InventoryLargeChest(rightChest, leftChest));
+                                }
+
+                                public IChatBaseComponent getScoreboardDisplayName() {
+                                    if (leftChest.hasCustomName()) {
+                                        return leftChest.getScoreboardDisplayName();
+                                    }
+                                    if (rightChest.hasCustomName()) {
+                                        return rightChest.getScoreboardDisplayName();
+                                    }
+                                    return new ChatMessage("container.chestDouble");
+                                }
+                            };
+                        }
+                    }
+                }
+            }
+
+            if (block instanceof BlockChestTrapped) {
+                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
+            } else {
+                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
+            }
+        }
+
+        if (block instanceof BlockShulkerBox) {
+            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
+        }
+
+        if (block instanceof BlockBarrel) {
+            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
+        }
+
+        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
+        if (!silentchest || player.playerInteractManager.getGameMode() == EnumGamemode.SPECTATOR) {
+            player.openContainer(tileInventory);
+            return true;
+        }
+
+        // SilentChest requires access to setting players' gamemode directly.
+        if (this.playerInteractManagerGamemode == null) {
+            return false;
+        }
+
+        if (tile instanceof TileEntityLootable) {
+            TileEntityLootable lootable = (TileEntityLootable) tile;
+            if (lootable.lootTable != null) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+        }
+
+        EnumGamemode gamemode = player.playerInteractManager.getGameMode();
+        this.forceGameMode(player, EnumGamemode.SPECTATOR);
+        player.openContainer(tileInventory);
+        this.forceGameMode(player, gamemode);
+        return true;
+    }
+
+    @Override
+    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
+        if (this.playerInteractManagerGamemode == null) {
+            return;
+        }
+
+        InventoryView view = bukkitPlayer.getOpenInventory();
+        switch (view.getType()) {
+            case CHEST:
+            case ENDER_CHEST:
+            case SHULKER_BOX:
+            case BARREL:
+                break;
+            default:
+                return;
+        }
+
+        EntityPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        EnumGamemode gamemode = player.playerInteractManager.getGameMode();
+        this.forceGameMode(player, EnumGamemode.SPECTATOR);
+        player.activeContainer.b(player);
+        player.activeContainer.a(player, false);
+        player.activeContainer.transferTo(player.defaultContainer, player.getBukkitEntity());
+        player.activeContainer = player.defaultContainer;
+        this.forceGameMode(player, gamemode);
+    }
+
+    private void forceGameMode(final EntityPlayer player, final EnumGamemode gameMode) {
+        if (this.playerInteractManagerGamemode == null) {
+            // No need to warn repeatedly, error on startup and lack of function should be enough.
+            return;
+        }
+        try {
+            if (!this.playerInteractManagerGamemode.isAccessible()) {
+                // Just in case, ensure accessible.
+                this.playerInteractManagerGamemode.setAccessible(true);
+            }
+            this.playerInteractManagerGamemode.set(player.playerInteractManager, gameMode);
+        } catch (IllegalArgumentException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/OpenPlayer.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_16_R3;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.NBTCompressedStreamTools;
+import net.minecraft.server.v1_16_R3.NBTTagCompound;
+import net.minecraft.server.v1_16_R3.WorldNBTStorage;
+import org.apache.logging.log4j.LogManager;
+import org.bukkit.craftbukkit.v1_16_R3.CraftServer;
+import org.bukkit.craftbukkit.v1_16_R3.entity.CraftPlayer;
+
+public class OpenPlayer extends CraftPlayer {
+
+    public OpenPlayer(CraftServer server, EntityPlayer entity) {
+        super(server, entity);
+    }
+
+    @Override
+    public void loadData() {
+        // See CraftPlayer#loadData
+        NBTTagCompound loaded = this.server.getHandle().playerFileData.load(this.getHandle());
+        if (loaded != null) {
+            readExtraData(loaded);
+        }
+    }
+
+    @Override
+    public void saveData() {
+        EntityPlayer player = this.getHandle();
+        // See net.minecraft.server.WorldNBTStorage#save(EntityPlayer)
+        try {
+            WorldNBTStorage worldNBTStorage = player.server.getPlayerList().playerFileData;
+
+            NBTTagCompound playerData = player.save(new NBTTagCompound());
+            setExtraData(playerData);
+
+            if (!isOnline()) {
+                // Special case: save old vehicle data
+                NBTTagCompound oldData = worldNBTStorage.load(player);
+
+                if (oldData != null && oldData.hasKeyOfType("RootVehicle", 10)) {
+                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
+                    playerData.set("RootVehicle", oldData.getCompound("RootVehicle"));
+                }
+            }
+
+            File file = new File(worldNBTStorage.getPlayerDir(), player.getUniqueIDString() + ".dat.tmp");
+            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getUniqueIDString() + ".dat");
+
+            NBTCompressedStreamTools.a(playerData, new FileOutputStream(file));
+
+            if (file1.exists() && !file1.delete() || !file.renameTo(file1)) {
+                LogManager.getLogger().warn("Failed to save player data for {}", player.getDisplayName().getString());
+            }
+
+        } catch (Exception e) {
+            LogManager.getLogger().warn("Failed to save player data for {}", player.getDisplayName().getString());
+        }
+    }
+
+}

internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/PlayerDataManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,31 +14,30 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.lishid.openinv.internal.v1_19_R1;
+package com.lishid.openinv.internal.v1_16_R3;
 
-import com.lishid.openinv.OpenInv;
 import com.lishid.openinv.internal.IPlayerDataManager;
 import com.lishid.openinv.internal.ISpecialInventory;
 import com.lishid.openinv.internal.OpenInventoryView;
 import com.mojang.authlib.GameProfile;
 import java.lang.reflect.Field;
-import java.util.logging.Logger;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.protocol.game.ClientboundOpenScreenPacket;
-import net.minecraft.server.MinecraftServer;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.entity.Entity;
-import net.minecraft.world.inventory.AbstractContainerMenu;
-import net.minecraft.world.inventory.MenuType;
-import net.minecraft.world.level.Level;
+import net.minecraft.server.v1_16_R3.ChatComponentText;
+import net.minecraft.server.v1_16_R3.Container;
+import net.minecraft.server.v1_16_R3.Containers;
+import net.minecraft.server.v1_16_R3.Entity;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.MinecraftServer;
+import net.minecraft.server.v1_16_R3.PacketPlayOutOpenWindow;
+import net.minecraft.server.v1_16_R3.PlayerInteractManager;
+import net.minecraft.server.v1_16_R3.World;
+import net.minecraft.server.v1_16_R3.WorldServer;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
-import org.bukkit.craftbukkit.v1_19_R1.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R1.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_19_R1.event.CraftEventFactory;
-import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftContainer;
+import org.bukkit.craftbukkit.v1_16_R3.CraftServer;
+import org.bukkit.craftbukkit.v1_16_R3.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory;
+import org.bukkit.craftbukkit.v1_16_R3.inventory.CraftContainer;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
@@ -52,23 +51,22 @@ public class PlayerDataManager implements IPlayerDataManager {
         try {
             bukkitEntity = Entity.class.getDeclaredField("bukkitEntity");
         } catch (NoSuchFieldException e) {
-            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
-            logger.warning("Unable to obtain field to inject custom save process - players' mounts may be deleted when loaded.");
-            logger.log(java.util.logging.Level.WARNING, e.getMessage(), e);
+            System.out.println("Unable to obtain field to inject custom save process - players' mounts may be deleted when loaded.");
+            e.printStackTrace();
             bukkitEntity = null;
         }
     }
 
-    public static @NotNull ServerPlayer getHandle(final Player player) {
+    public static @NotNull EntityPlayer getHandle(final Player player) {
         if (player instanceof CraftPlayer) {
             return ((CraftPlayer) player).getHandle();
         }
 
         Server server = player.getServer();
-        ServerPlayer nmsPlayer = null;
+        EntityPlayer nmsPlayer = null;
 
         if (server instanceof CraftServer) {
-            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getUniqueId());
+            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getName());
         }
 
         if (nmsPlayer == null) {
@@ -87,18 +85,17 @@ public class PlayerDataManager implements IPlayerDataManager {
         }
 
         // Create a profile and entity to load the player data
-        // See net.minecraft.server.players.PlayerList#canPlayerLogin
-        // and net.minecraft.server.network.ServerLoginPacketListenerImpl#handleHello
+        // See net.minecraft.server.PlayerList#attemptLogin
         GameProfile profile = new GameProfile(offline.getUniqueId(),
                 offline.getName() != null ? offline.getName() : offline.getUniqueId().toString());
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
-        ServerLevel worldServer = server.getLevel(Level.OVERWORLD);
+        WorldServer worldServer = server.getWorldServer(World.OVERWORLD);
 
         if (worldServer == null) {
             return null;
         }
 
-        ServerPlayer entity = new ServerPlayer(server, worldServer, profile, null);
+        EntityPlayer entity = new EntityPlayer(server, worldServer, profile, new PlayerInteractManager(worldServer));
 
         try {
             injectPlayer(entity);
@@ -116,7 +113,7 @@ public class PlayerDataManager implements IPlayerDataManager {
         return target;
     }
 
-    void injectPlayer(ServerPlayer player) throws IllegalAccessException {
+    void injectPlayer(EntityPlayer player) throws IllegalAccessException {
         if (bukkitEntity == null) {
             return;
         }
@@ -130,10 +127,7 @@ public class PlayerDataManager implements IPlayerDataManager {
     @Override
     public Player inject(@NotNull Player player) {
         try {
-            ServerPlayer nmsPlayer = getHandle(player);
-            if (nmsPlayer.getBukkitEntity() instanceof OpenPlayer openPlayer) {
-                return openPlayer;
-            }
+            EntityPlayer nmsPlayer = getHandle(player);
             injectPlayer(nmsPlayer);
             return nmsPlayer.getBukkitEntity();
         } catch (IllegalAccessException e) {
@@ -146,9 +140,9 @@ public class PlayerDataManager implements IPlayerDataManager {
     @Override
     public InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
 
-        ServerPlayer nmsPlayer = getHandle(player);
+        EntityPlayer nmsPlayer = getHandle(player);
 
-        if (nmsPlayer.connection == null) {
+        if (nmsPlayer.playerConnection == null) {
             return null;
         }
 
@@ -158,24 +152,24 @@ public class PlayerDataManager implements IPlayerDataManager {
             return player.openInventory(inventory.getBukkitInventory());
         }
 
-        AbstractContainerMenu container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
+        Container container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
             @Override
-            public MenuType<?> getType() {
+            public Containers<?> getType() {
                 return getContainers(inventory.getBukkitInventory().getSize());
             }
         };
 
-        container.setTitle(Component.literal(view.getTitle()));
+        container.setTitle(new ChatComponentText(view.getTitle()));
         container = CraftEventFactory.callInventoryOpenEvent(nmsPlayer, container);
 
         if (container == null) {
             return null;
         }
 
-        nmsPlayer.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(),
-                Component.literal(container.getBukkitView().getTitle())));
-        nmsPlayer.containerMenu = container;
-        nmsPlayer.initMenu(container);
+        nmsPlayer.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, container.getType(),
+                new ChatComponentText(container.getBukkitView().getTitle())));
+        nmsPlayer.activeContainer = container;
+        container.addSlotListener(nmsPlayer);
 
         return container.getBukkitView();
 
@@ -191,16 +185,23 @@ public class PlayerDataManager implements IPlayerDataManager {
         }
     }
 
-    static @NotNull MenuType<?> getContainers(int inventorySize) {
-
-        return switch (inventorySize) {
-            case 9 -> MenuType.GENERIC_9x1;
-            case 18 -> MenuType.GENERIC_9x2;
-            case 36 -> MenuType.GENERIC_9x4; // PLAYER
-            case 41, 45 -> MenuType.GENERIC_9x5;
-            case 54 -> MenuType.GENERIC_9x6;
-            default -> MenuType.GENERIC_9x3; // Default 27-slot inventory
-        };
+    static @NotNull Containers<?> getContainers(int inventorySize) {
+        switch (inventorySize) {
+            case 9:
+                return Containers.GENERIC_9X1;
+            case 18:
+                return Containers.GENERIC_9X2;
+            case 36:
+                return Containers.GENERIC_9X4;
+            case 41: // PLAYER
+            case 45:
+                return Containers.GENERIC_9X5;
+            case 54:
+                return Containers.GENERIC_9X6;
+            case 27:
+            default:
+                return Containers.GENERIC_9X3;
+        }
     }
 
     @Override

internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/SpecialEnderChest.java

@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_16_R3;
+
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import java.util.List;
+import net.minecraft.server.v1_16_R3.AutoRecipeStackManager;
+import net.minecraft.server.v1_16_R3.ContainerUtil;
+import net.minecraft.server.v1_16_R3.EntityHuman;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.IInventoryListener;
+import net.minecraft.server.v1_16_R3.InventoryEnderChest;
+import net.minecraft.server.v1_16_R3.ItemStack;
+import net.minecraft.server.v1_16_R3.NonNullList;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_16_R3.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_16_R3.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialEnderChest extends InventoryEnderChest implements ISpecialEnderChest {
+
+    private final CraftInventory inventory;
+    private EntityPlayer owner;
+    private NonNullList<ItemStack> items;
+    private boolean playerOnline;
+
+    public SpecialEnderChest(final Player player, final Boolean online) {
+        super(PlayerDataManager.getHandle(player));
+        this.inventory = new CraftInventory(this);
+        this.owner = PlayerDataManager.getHandle(player);
+        this.playerOnline = online;
+        this.items = this.owner.getEnderChest().items;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return inventory;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final Player player) {
+        if (!this.playerOnline) {
+            try {
+                this.owner = PlayerDataManager.getHandle(player);
+                InventoryEnderChest enderChest = owner.getEnderChest();
+                for (int i = 0; i < enderChest.getSize(); ++i) {
+                    enderChest.setItem(i, this.items.get(i));
+                }
+                this.items = enderChest.items;
+            } catch (Exception ignored) {}
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull Player getPlayer() {
+        return owner.getBukkitEntity();
+    }
+
+    @Override
+    public void update() {
+        this.owner.getEnderChest().update();
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.items;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.owner.getEnderChest().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.owner.getEnderChest().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.owner.getEnderChest().getViewers();
+    }
+
+    @Override
+    public void setMaxStackSize(int i) {
+        this.owner.getEnderChest().setMaxStackSize(i);
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.owner.getEnderChest().getOwner();
+    }
+
+    @Override
+    public @Nullable Location getLocation() {
+        return null;
+    }
+
+    @Override
+    public void a(IInventoryListener iinventorylistener) {
+        this.owner.getEnderChest().a(iinventorylistener);
+    }
+
+    @Override
+    public void b(IInventoryListener iinventorylistener) {
+        this.owner.getEnderChest().b(iinventorylistener);
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        return i >= 0 && i < this.items.size() ? this.items.get(i) : ItemStack.b;
+    }
+
+    @Override
+    public ItemStack splitStack(int i, int j) {
+        ItemStack itemstack = ContainerUtil.a(this.items, i, j);
+        if (!itemstack.isEmpty()) {
+            this.update();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public ItemStack a(ItemStack itemstack) {
+        ItemStack itemstack1 = itemstack.cloneItemStack();
+
+        for (int i = 0; i < this.getSize(); ++i) {
+            ItemStack itemstack2 = this.getItem(i);
+            if (itemstack2.isEmpty()) {
+                this.setItem(i, itemstack1);
+                this.update();
+                return ItemStack.b;
+            }
+
+            if (ItemStack.c(itemstack2, itemstack1)) {
+                int j = Math.min(this.getMaxStackSize(), itemstack2.getMaxStackSize());
+                int k = Math.min(itemstack1.getCount(), j - itemstack2.getCount());
+                if (k > 0) {
+                    itemstack2.add(k);
+                    itemstack1.subtract(k);
+                    if (itemstack1.isEmpty()) {
+                        this.update();
+                        return ItemStack.b;
+                    }
+                }
+            }
+        }
+
+        if (itemstack1.getCount() != itemstack.getCount()) {
+            this.update();
+        }
+
+        return itemstack1;
+    }
+
+    @Override
+    public ItemStack splitWithoutUpdate(int i) {
+        ItemStack itemstack = this.items.get(i);
+        if (itemstack.isEmpty()) {
+            return ItemStack.b;
+        } else {
+            this.items.set(i, ItemStack.b);
+            return itemstack;
+        }
+    }
+
+    @Override
+    public void setItem(int i, ItemStack itemstack) {
+        this.items.set(i, itemstack);
+        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
+            itemstack.setCount(this.getMaxStackSize());
+        }
+
+        this.update();
+    }
+
+    @Override
+    public int getSize() {
+        return this.owner.getEnderChest().getSize();
+    }
+
+    @Override
+    public boolean isEmpty() {
+
+        for (ItemStack itemstack : this.items) {
+            if (!itemstack.isEmpty()) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return 64;
+    }
+
+    @Override
+    public boolean a(EntityHuman entityhuman) {
+        return true;
+    }
+
+    @Override
+    public void startOpen(EntityHuman entityhuman) {
+    }
+
+    @Override
+    public void closeContainer(EntityHuman entityhuman) {
+    }
+
+    @Override
+    public boolean b(int i, ItemStack itemstack) {
+        return true;
+    }
+
+    @Override
+    public void clear() {
+        this.items.clear();
+    }
+
+    @Override
+    public void a(AutoRecipeStackManager autorecipestackmanager) {
+
+        for (ItemStack itemstack : this.items) {
+            autorecipestackmanager.b(itemstack);
+        }
+
+    }
+
+}

internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/SpecialPlayerInventory.java

@@ -0,0 +1,738 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_16_R3;
+
+import com.google.common.collect.ImmutableList;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.util.Iterator;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.server.v1_16_R3.AutoRecipeStackManager;
+import net.minecraft.server.v1_16_R3.ChatMessage;
+import net.minecraft.server.v1_16_R3.ContainerUtil;
+import net.minecraft.server.v1_16_R3.CrashReport;
+import net.minecraft.server.v1_16_R3.CrashReportSystemDetails;
+import net.minecraft.server.v1_16_R3.DamageSource;
+import net.minecraft.server.v1_16_R3.EntityHuman;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.EnumItemSlot;
+import net.minecraft.server.v1_16_R3.IBlockData;
+import net.minecraft.server.v1_16_R3.IChatBaseComponent;
+import net.minecraft.server.v1_16_R3.IInventory;
+import net.minecraft.server.v1_16_R3.Item;
+import net.minecraft.server.v1_16_R3.ItemArmor;
+import net.minecraft.server.v1_16_R3.ItemStack;
+import net.minecraft.server.v1_16_R3.NBTTagCompound;
+import net.minecraft.server.v1_16_R3.NBTTagList;
+import net.minecraft.server.v1_16_R3.NonNullList;
+import net.minecraft.server.v1_16_R3.PacketPlayOutSetSlot;
+import net.minecraft.server.v1_16_R3.PlayerInventory;
+import net.minecraft.server.v1_16_R3.ReportedException;
+import net.minecraft.server.v1_16_R3.World;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_16_R3.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_16_R3.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialPlayerInventory extends PlayerInventory implements ISpecialPlayerInventory {
+
+    private final CraftInventory inventory;
+    private boolean playerOnline;
+    private EntityHuman player;
+    private NonNullList<ItemStack> items, armor, extraSlots;
+    private List<NonNullList<ItemStack>> f;
+
+    public SpecialPlayerInventory(final Player bukkitPlayer, final Boolean online) {
+        super(PlayerDataManager.getHandle(bukkitPlayer));
+        this.inventory = new CraftInventory(this);
+        this.playerOnline = online;
+        this.player = super.player;
+        this.items = this.player.inventory.items;
+        this.armor = this.player.inventory.armor;
+        this.extraSlots = this.player.inventory.extraSlots;
+        this.f = ImmutableList.of(this.items, this.armor, this.extraSlots);
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final Player player) {
+        if (!this.playerOnline) {
+            EntityPlayer entityPlayer = PlayerDataManager.getHandle(player);
+            entityPlayer.inventory.transaction.addAll(this.transaction);
+            this.player = entityPlayer;
+            for (int i = 0; i < getSize(); ++i) {
+                this.player.inventory.setItem(i, getRawItem(i));
+            }
+            this.player.inventory.itemInHandIndex = this.itemInHandIndex;
+            this.items = this.player.inventory.items;
+            this.armor = this.player.inventory.armor;
+            this.extraSlots = this.player.inventory.extraSlots;
+            this.f = ImmutableList.of(this.items, this.armor, this.extraSlots);
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public boolean a(final EntityHuman entityhuman) {
+        return true;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return this.inventory;
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        List<ItemStack> list = this.items;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.armor;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.extraSlots;
+        } else if (list == this.armor) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        return list.get(i);
+    }
+
+    private ItemStack getRawItem(int i) {
+        NonNullList<ItemStack> list = null;
+        for (NonNullList<ItemStack> next : this.f) {
+            if (i < next.size()) {
+                list = next;
+                break;
+            }
+            i -= next.size();
+        }
+
+        return list == null ? ItemStack.b : list.get(i);
+    }
+
+    @Override
+    public IChatBaseComponent getDisplayName() {
+        return new ChatMessage(this.player.getName());
+    }
+
+    @Override
+    public boolean hasCustomName() {
+        return false;
+    }
+
+    private int getReversedArmorSlotNum(final int i) {
+        if (i == 0) {
+            return 3;
+        }
+        if (i == 1) {
+            return 2;
+        }
+        if (i == 2) {
+            return 1;
+        }
+        if (i == 3) {
+            return 0;
+        }
+        return i;
+    }
+
+    private int getReversedItemSlotNum(final int i) {
+        if (i >= 27) {
+            return i - 27;
+        }
+        return i + 9;
+    }
+
+    @Override
+    public int getSize() {
+        return 45;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setItem(int i, final ItemStack itemstack) {
+        List<ItemStack> list = this.items;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.armor;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.extraSlots;
+        } else if (list == this.armor) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            this.player.drop(itemstack, true);
+            return;
+        }
+
+        list.set(i, itemstack);
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public @NotNull HumanEntity getPlayer() {
+        return this.player.getBukkitEntity();
+    }
+
+    @Override
+    public ItemStack splitStack(int i, final int j) {
+        List<ItemStack> list = this.items;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.armor;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.extraSlots;
+        } else if (list == this.armor) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        return list.get(i).isEmpty() ? ItemStack.b : ContainerUtil.a(list, i, j);
+    }
+
+    @Override
+    public ItemStack splitWithoutUpdate(int i) {
+        List<ItemStack> list = this.items;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.armor;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.extraSlots;
+        } else if (list == this.armor) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        if (!list.get(i).isEmpty()) {
+            ItemStack itemstack = list.get(i);
+
+            list.set(i, ItemStack.b);
+            return itemstack;
+        }
+
+        return ItemStack.b;
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.f.stream().flatMap(List::stream).collect(Collectors.toList());
+    }
+
+    @Override
+    public List<ItemStack> getArmorContents() {
+        return this.armor;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.transaction.add(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.transaction.remove(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.transaction;
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.player.getBukkitEntity();
+    }
+
+    @Override
+    public Location getLocation() {
+        return this.player.getBukkitEntity().getLocation();
+    }
+
+    @Override
+    public ItemStack getItemInHand() {
+        return d(this.itemInHandIndex) ? this.items.get(this.itemInHandIndex) : ItemStack.b;
+    }
+
+    private boolean isSimilarAndNotFull(ItemStack itemstack, ItemStack itemstack1) {
+        return !itemstack.isEmpty() && this.b(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
+    }
+
+    private boolean b(ItemStack itemstack, ItemStack itemstack1) {
+        return itemstack.getItem() == itemstack1.getItem() && ItemStack.equals(itemstack, itemstack1);
+    }
+
+    @Override
+    public int canHold(ItemStack itemstack) {
+        int remains = itemstack.getCount();
+
+        for (int i = 0; i < this.items.size(); ++i) {
+            ItemStack itemstack1 = this.getItem(i);
+            if (itemstack1.isEmpty()) {
+                return itemstack.getCount();
+            }
+
+            if (!this.isSimilarAndNotFull(itemstack, itemstack1)) {
+                remains -= Math.min(itemstack1.getMaxStackSize(), this.getMaxStackSize()) - itemstack1.getCount();
+            }
+
+            if (remains <= 0) {
+                return itemstack.getCount();
+            }
+        }
+
+        ItemStack offhandItemStack = this.getItem(this.items.size() + this.armor.size());
+        if (this.isSimilarAndNotFull(offhandItemStack, itemstack)) {
+            remains -= Math.min(offhandItemStack.getMaxStackSize(), this.getMaxStackSize()) - offhandItemStack.getCount();
+        }
+
+        return itemstack.getCount() - remains;
+    }
+
+    @Override
+    public int getFirstEmptySlotIndex() {
+        for (int i = 0; i < this.items.size(); ++i) {
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public void c(int i) {
+        this.itemInHandIndex = this.i();
+        ItemStack itemstack = this.items.get(this.itemInHandIndex);
+        this.items.set(this.itemInHandIndex, this.items.get(i));
+        this.items.set(i, itemstack);
+    }
+
+    @Override
+    public int c(ItemStack itemstack) {
+        for (int i = 0; i < this.items.size(); ++i) {
+            ItemStack itemstack1 = this.items.get(i);
+            if (!this.items.get(i).isEmpty() && this.b(itemstack, this.items.get(i)) && !this.items.get(i).f() && !itemstack1.hasEnchantments() && !itemstack1.hasName()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int i() {
+        int i;
+        int j;
+        for (j = 0; j < 9; ++j) {
+            i = (this.itemInHandIndex + j) % 9;
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        for (j = 0; j < 9; ++j) {
+            i = (this.itemInHandIndex + j) % 9;
+            if (!this.items.get(i).hasEnchantments()) {
+                return i;
+            }
+        }
+
+        return this.itemInHandIndex;
+    }
+
+    @Override
+    public int a(Predicate<ItemStack> predicate, int i, IInventory iinventory) {
+        byte b0 = 0;
+        boolean flag = i == 0;
+        int j = b0 + ContainerUtil.a(this, predicate, i - b0, flag);
+        j += ContainerUtil.a(iinventory, predicate, i - j, flag);
+        j += ContainerUtil.a(this.getCarried(), predicate, i - j, flag);
+        if (this.getCarried().isEmpty()) {
+            this.setCarried(ItemStack.b);
+        }
+
+        return j;
+    }
+
+    private int i(ItemStack itemstack) {
+        int i = this.firstPartial(itemstack);
+        if (i == -1) {
+            i = this.getFirstEmptySlotIndex();
+        }
+
+        return i == -1 ? itemstack.getCount() : this.d(i, itemstack);
+    }
+
+    private int d(int i, ItemStack itemstack) {
+        Item item = itemstack.getItem();
+        int j = itemstack.getCount();
+        ItemStack itemstack1 = this.getItem(i);
+        if (itemstack1.isEmpty()) {
+            itemstack1 = new ItemStack(item, 0);
+            NBTTagCompound tag = itemstack.getTag();
+            if (tag != null) {
+                itemstack1.setTag(tag.clone());
+            }
+
+            this.setItem(i, itemstack1);
+        }
+
+        int k = j;
+        if (j > itemstack1.getMaxStackSize() - itemstack1.getCount()) {
+            k = itemstack1.getMaxStackSize() - itemstack1.getCount();
+        }
+
+        if (k > this.getMaxStackSize() - itemstack1.getCount()) {
+            k = this.getMaxStackSize() - itemstack1.getCount();
+        }
+
+        if (k != 0) {
+            j -= k;
+            itemstack1.add(k);
+            itemstack1.d(5);
+        }
+        return j;
+    }
+
+    @Override
+    public int firstPartial(ItemStack itemstack) {
+        if (this.isSimilarAndNotFull(this.getItem(this.itemInHandIndex), itemstack)) {
+            return this.itemInHandIndex;
+        } else if (this.isSimilarAndNotFull(this.getItem(40), itemstack)) {
+            return 40;
+        } else {
+            for (int i = 0; i < this.items.size(); ++i) {
+                if (this.isSimilarAndNotFull(this.items.get(i), itemstack)) {
+                    return i;
+                }
+            }
+
+            return -1;
+        }
+    }
+
+    @Override
+    public void j() {
+
+        for (List<ItemStack> itemStacks : this.f) {
+            for (int i = 0; i < itemStacks.size(); ++i) {
+                if (!itemStacks.get(i).isEmpty()) {
+                    itemStacks.get(i).a(this.player.world, this.player, i, this.itemInHandIndex == i);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public boolean pickup(ItemStack itemstack) {
+        return this.c(-1, itemstack);
+    }
+
+    @Override
+    public boolean c(int i, ItemStack itemstack) {
+        if (itemstack.isEmpty()) {
+            return false;
+        } else {
+            try {
+                if (itemstack.f()) {
+                    if (i == -1) {
+                        i = this.getFirstEmptySlotIndex();
+                    }
+
+                    if (i >= 0) {
+                        this.items.set(i, itemstack.cloneItemStack());
+                        this.items.get(i).d(5);
+                        itemstack.setCount(0);
+                        return true;
+                    } else if (this.player.abilities.canInstantlyBuild) {
+                        itemstack.setCount(0);
+                        return true;
+                    } else {
+                        return false;
+                    }
+                } else {
+                    int j;
+                    do {
+                        j = itemstack.getCount();
+                        if (i == -1) {
+                            itemstack.setCount(this.i(itemstack));
+                        } else {
+                            itemstack.setCount(this.d(i, itemstack));
+                        }
+                    } while(!itemstack.isEmpty() && itemstack.getCount() < j);
+
+                    if (itemstack.getCount() == j && this.player.abilities.canInstantlyBuild) {
+                        itemstack.setCount(0);
+                        return true;
+                    } else {
+                        return itemstack.getCount() < j;
+                    }
+                }
+            } catch (Throwable var6) {
+                CrashReport crashreport = CrashReport.a(var6, "Adding item to inventory");
+                CrashReportSystemDetails crashreportsystemdetails = crashreport.a("Item being added");
+                crashreportsystemdetails.a("Item ID", Item.getId(itemstack.getItem()));
+                crashreportsystemdetails.a("Item data", itemstack.getDamage());
+                crashreportsystemdetails.a("Item name", () -> itemstack.getName().getString());
+                throw new ReportedException(crashreport);
+            }
+        }
+    }
+
+    @Override
+    public void a(World world, ItemStack itemstack) {
+        if (!world.isClientSide) {
+            while(!itemstack.isEmpty()) {
+                int i = this.firstPartial(itemstack);
+                if (i == -1) {
+                    i = this.getFirstEmptySlotIndex();
+                }
+
+                if (i == -1) {
+                    this.player.drop(itemstack, false);
+                    break;
+                }
+
+                int j = itemstack.getMaxStackSize() - this.getItem(i).getCount();
+                if (this.c(i, itemstack.cloneAndSubtract(j))) {
+                    ((EntityPlayer)this.player).playerConnection.sendPacket(new PacketPlayOutSetSlot(-2, i, this.getItem(i)));
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public void f(ItemStack itemstack) {
+
+        for (List<ItemStack> list : this.f) {
+            for (int i = 0; i < list.size(); ++i) {
+                if (list.get(i) == itemstack) {
+                    list.set(i, ItemStack.b);
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public float a(IBlockData iblockdata) {
+        return this.items.get(this.itemInHandIndex).a(iblockdata);
+    }
+
+    @Override
+    public NBTTagList a(NBTTagList nbttaglist) {
+        NBTTagCompound nbttagcompound;
+        int i;
+        for (i = 0; i < this.items.size(); ++i) {
+            if (!this.items.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte) i);
+                this.items.get(i).save(nbttagcompound);
+                nbttaglist.add(nbttagcompound);
+            }
+        }
+
+        for (i = 0; i < this.armor.size(); ++i) {
+            if (!this.armor.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte) (i + 100));
+                this.armor.get(i).save(nbttagcompound);
+                nbttaglist.add(nbttagcompound);
+            }
+        }
+
+        for (i = 0; i < this.extraSlots.size(); ++i) {
+            if (!this.extraSlots.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte) (i + 150));
+                this.extraSlots.get(i).save(nbttagcompound);
+                nbttaglist.add(nbttagcompound);
+            }
+        }
+
+        return nbttaglist;
+    }
+
+    @Override
+    public void b(NBTTagList nbttaglist) {
+        this.items.clear();
+        this.armor.clear();
+        this.extraSlots.clear();
+
+        for(int i = 0; i < nbttaglist.size(); ++i) {
+            NBTTagCompound nbttagcompound = nbttaglist.getCompound(i);
+            int j = nbttagcompound.getByte("Slot") & 255;
+            ItemStack itemstack = ItemStack.a(nbttagcompound);
+            if (!itemstack.isEmpty()) {
+                if (j < this.items.size()) {
+                    this.items.set(j, itemstack);
+                } else if (j >= 100 && j < this.armor.size() + 100) {
+                    this.armor.set(j - 100, itemstack);
+                } else if (j >= 150 && j < this.extraSlots.size() + 150) {
+                    this.extraSlots.set(j - 150, itemstack);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public boolean isEmpty() {
+        Iterator<ItemStack> iterator = this.items.iterator();
+
+        ItemStack itemstack;
+        while (iterator.hasNext()) {
+            itemstack = iterator.next();
+            if (!itemstack.isEmpty()) {
+                return false;
+            }
+        }
+
+        iterator = this.armor.iterator();
+
+        while (iterator.hasNext()) {
+            itemstack = iterator.next();
+            if (!itemstack.isEmpty()) {
+                return false;
+            }
+        }
+
+        iterator = this.extraSlots.iterator();
+
+        while (iterator.hasNext()) {
+            itemstack = iterator.next();
+            if (!itemstack.isEmpty()) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    @Nullable
+    @Override
+    public IChatBaseComponent getCustomName() {
+        return null;
+    }
+
+    @Override
+    public void a(DamageSource damagesource, float f) {
+        if (f > 0.0F) {
+            f /= 4.0F;
+            if (f < 1.0F) {
+                f = 1.0F;
+            }
+
+            for (int i = 0; i < this.armor.size(); ++i) {
+                ItemStack itemstack = this.armor.get(0);
+                int index = i;
+                if ((!damagesource.isFire() || !itemstack.getItem().u()) && itemstack.getItem() instanceof ItemArmor) {
+                    itemstack.damage((int) f, this.player, (entityHuman) -> entityHuman.broadcastItemBreak(EnumItemSlot.a(EnumItemSlot.Function.ARMOR, index)));
+                }
+            }
+        }
+    }
+
+    @Override
+    public void dropContents() {
+        for (List<ItemStack> itemStacks : this.f) {
+            for (int i = 0; i < itemStacks.size(); ++i) {
+                ItemStack itemstack = itemStacks.get(i);
+                if (!itemstack.isEmpty()) {
+                    itemStacks.set(i, ItemStack.b);
+                    this.player.a(itemstack, true, false);
+                }
+            }
+        }
+    }
+
+    @Override
+    public boolean h(ItemStack itemstack) {
+        return this.f.stream().flatMap(List::stream).anyMatch(itemStack1 -> !itemStack1.isEmpty() && itemStack1.doMaterialsMatch(itemstack));
+    }
+
+    @Override
+    public void a(PlayerInventory playerinventory) {
+        for (int i = 0; i < playerinventory.getSize(); ++i) {
+            this.setItem(i, playerinventory.getItem(i));
+        }
+
+        this.itemInHandIndex = playerinventory.itemInHandIndex;
+    }
+
+    @Override
+    public void clear() {
+        this.f.forEach(List::clear);
+    }
+
+    @Override
+    public void a(AutoRecipeStackManager autorecipestackmanager) {
+        for (ItemStack itemstack : this.items) {
+            autorecipestackmanager.a(itemstack);
+        }
+    }
+
+}

internal/v1_17_R1/pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -23,35 +23,27 @@
     <artifactId>openinvparent</artifactId>
     <groupId>com.lishid</groupId>
     <relativePath>../../pom.xml</relativePath>
-    <version>4.2.1</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
-  <artifactId>openinvadapter1_18_R2</artifactId>
-  <name>OpenInvAdapter1_18_R2</name>
+  <artifactId>openinvadapter1_17_R1</artifactId>
+  <name>OpenInvAdapter1_17_R1</name>
 
   <properties>
-    <maven.compiler.source>17</maven.compiler.source>
-    <maven.compiler.target>17</maven.compiler.target>
-    <spigot.version>1.18.2-R0.1-SNAPSHOT</spigot.version>
+    <maven.compiler.source>16</maven.compiler.source>
+    <maven.compiler.target>16</maven.compiler.target>
   </properties>
 
   <dependencies>
-    <dependency>
-      <groupId>org.spigotmc</groupId>
-      <artifactId>spigot-api</artifactId>
-      <version>${spigot.version}</version>
-    </dependency>
     <dependency>
       <artifactId>spigot</artifactId>
       <groupId>org.spigotmc</groupId>
       <scope>provided</scope>
-      <version>${spigot.version}</version>
-      <classifier>remapped-mojang</classifier>
+      <version>1.17-R0.1-SNAPSHOT</version>
     </dependency>
     <dependency>
       <artifactId>openinvapi</artifactId>
       <groupId>com.lishid</groupId>
-      <scope>provided</scope>
     </dependency>
     <dependency>
       <artifactId>openinvplugincore</artifactId>
@@ -67,7 +59,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-shade-plugin</artifactId>
-        <!-- Cannot use minimizeJar: MSHADE-366 -->
+        <!-- Cannot use minimizeJar until maven-shade-plugin 3.3.0 releases; ASM used does not support Java 16. -->
         <configuration>
           <minimizeJar>false</minimizeJar>
         </configuration>
@@ -75,10 +67,6 @@
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
       </plugin>
-      <plugin>
-        <groupId>net.md-5</groupId>
-        <artifactId>specialsource-maven-plugin</artifactId>
-      </plugin>
     </plugins>
   </build>
 

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java

@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IAnySilentContainer;
+import java.lang.reflect.Field;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import net.minecraft.core.BlockPosition;
+import net.minecraft.network.chat.ChatMessage;
+import net.minecraft.network.chat.IChatBaseComponent;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.server.level.PlayerInteractManager;
+import net.minecraft.world.ITileInventory;
+import net.minecraft.world.InventoryLargeChest;
+import net.minecraft.world.TileInventory;
+import net.minecraft.world.entity.player.EntityHuman;
+import net.minecraft.world.entity.player.PlayerInventory;
+import net.minecraft.world.inventory.Container;
+import net.minecraft.world.inventory.ContainerChest;
+import net.minecraft.world.inventory.Containers;
+import net.minecraft.world.inventory.InventoryEnderChest;
+import net.minecraft.world.level.EnumGamemode;
+import net.minecraft.world.level.World;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.BlockBarrel;
+import net.minecraft.world.level.block.BlockChest;
+import net.minecraft.world.level.block.BlockChestTrapped;
+import net.minecraft.world.level.block.BlockShulkerBox;
+import net.minecraft.world.level.block.entity.TileEntity;
+import net.minecraft.world.level.block.entity.TileEntityChest;
+import net.minecraft.world.level.block.entity.TileEntityEnderChest;
+import net.minecraft.world.level.block.entity.TileEntityLootable;
+import net.minecraft.world.level.block.state.IBlockData;
+import net.minecraft.world.level.block.state.properties.BlockPropertyChestType;
+import org.bukkit.Material;
+import org.bukkit.Statistic;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+
+public class AnySilentContainer implements IAnySilentContainer {
+
+    private Field playerInteractManagerGamemode;
+
+    public AnySilentContainer() {
+        try {
+            this.playerInteractManagerGamemode = PlayerInteractManager.class.getDeclaredField("b");
+            this.playerInteractManagerGamemode.setAccessible(true);
+        } catch (NoSuchFieldException | SecurityException e) {
+            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+            logger.warning("Unable to directly write player gamemode! SilentChest will fail.");
+            logger.log(Level.WARNING, "Error obtaining gamemode field", e);
+        }
+    }
+
+    @Override
+    public boolean activateContainer(
+            @NotNull final Player bukkitPlayer,
+            final boolean silentchest,
+            @NotNull final org.bukkit.block.Block bukkitBlock) {
+
+        // Silent ender chest is API-only
+        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
+            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        EntityPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        final World world = player.getWorld();
+        final BlockPosition blockPosition = new BlockPosition(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        final TileEntity tile = world.getTileEntity(blockPosition);
+
+        if (tile == null) {
+            return false;
+        }
+
+        if (tile instanceof TileEntityEnderChest) {
+            // Anychest ender chest. See net.minecraft.world.level.block.BlockEnderChest
+            InventoryEnderChest enderChest = player.getEnderChest();
+            enderChest.a((TileEntityEnderChest) tile);
+            player.openContainer(new TileInventory((containerCounter, playerInventory, ignored) -> {
+                Containers<?> containers = PlayerDataManager.getContainers(enderChest.getSize());
+                int rows = enderChest.getSize() / 9;
+                return new ContainerChest(containers, containerCounter, playerInventory, enderChest, rows);
+            }, new ChatMessage("container.enderchest")));
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        if (!(tile instanceof ITileInventory tileInventory)) {
+            return false;
+        }
+
+        IBlockData blockData = world.getType(blockPosition);
+        Block block = blockData.getBlock();
+
+        if (block instanceof BlockChest) {
+
+            BlockPropertyChestType chestType = blockData.get(BlockChest.c);
+
+            if (chestType != BlockPropertyChestType.a) {
+
+                BlockPosition adjacentBlockPosition = blockPosition.shift(BlockChest.h(blockData));
+                IBlockData adjacentBlockData = world.getType(adjacentBlockPosition);
+
+                if (adjacentBlockData.getBlock() == block) {
+
+                    BlockPropertyChestType adjacentChestType = adjacentBlockData.get(BlockChest.c);
+
+                    if (adjacentChestType != BlockPropertyChestType.a && chestType != adjacentChestType
+                            && adjacentBlockData.get(BlockChest.b) == blockData.get(BlockChest.b)) {
+
+                        TileEntity adjacentTile = world.getTileEntity(adjacentBlockPosition);
+
+                        if (adjacentTile instanceof TileEntityChest && tileInventory instanceof  TileEntityChest) {
+                            TileEntityChest rightChest = chestType == BlockPropertyChestType.c ? ((TileEntityChest) tileInventory) : (TileEntityChest) adjacentTile;
+                            TileEntityChest leftChest = chestType == BlockPropertyChestType.c ? (TileEntityChest) adjacentTile : ((TileEntityChest) tileInventory);
+
+                            if (silentchest && (rightChest.g != null || leftChest.g != null)) {
+                                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                                return false;
+                            }
+
+                            tileInventory = new ITileInventory() {
+                                public Container createMenu(int containerCounter, PlayerInventory playerInventory, EntityHuman entityHuman) {
+                                    leftChest.d(playerInventory.l);
+                                    rightChest.d(playerInventory.l);
+                                    return ContainerChest.b(containerCounter, playerInventory, new InventoryLargeChest(rightChest, leftChest));
+                                }
+
+                                public IChatBaseComponent getScoreboardDisplayName() {
+                                    if (leftChest.hasCustomName()) {
+                                        return leftChest.getScoreboardDisplayName();
+                                    }
+                                    if (rightChest.hasCustomName()) {
+                                        return rightChest.getScoreboardDisplayName();
+                                    }
+                                    return new ChatMessage("container.chestDouble");
+                                }
+                            };
+                        }
+                    }
+                }
+            }
+
+            if (block instanceof BlockChestTrapped) {
+                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
+            } else {
+                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
+            }
+        }
+
+        if (block instanceof BlockShulkerBox) {
+            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
+        }
+
+        if (block instanceof BlockBarrel) {
+            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
+        }
+
+        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
+        if (!silentchest || player.d.getGameMode() == EnumGamemode.d) {
+            player.openContainer(tileInventory);
+            return true;
+        }
+
+        // SilentChest requires access to setting players' gamemode directly.
+        if (this.playerInteractManagerGamemode == null) {
+            return false;
+        }
+
+        if (tile instanceof TileEntityLootable lootable) {
+            if (lootable.g != null) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+        }
+
+        EnumGamemode gamemode = player.d.getGameMode();
+        this.forceGameMode(player, EnumGamemode.d);
+        player.openContainer(tileInventory);
+        this.forceGameMode(player, gamemode);
+        return true;
+    }
+
+    @Override
+    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
+        if (this.playerInteractManagerGamemode == null) {
+            return;
+        }
+
+        InventoryView view = bukkitPlayer.getOpenInventory();
+        switch (view.getType()) {
+            case CHEST:
+            case ENDER_CHEST:
+            case SHULKER_BOX:
+            case BARREL:
+                break;
+            default:
+                return;
+        }
+
+        EntityPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        // Force game mode change without informing plugins or players.
+        EnumGamemode gamemode = player.d.getGameMode();
+        this.forceGameMode(player, EnumGamemode.d);
+
+        // See EntityPlayer#closeInventory - can't call or we'd recursively deactivate.
+        player.bV.b(player);
+        player.bU.a(player.bV);
+        player.bV = player.bU;
+
+        // Revert forced game mode.
+        this.forceGameMode(player, gamemode);
+    }
+
+    private void forceGameMode(final EntityPlayer player, final EnumGamemode gameMode) {
+        if (this.playerInteractManagerGamemode == null) {
+            // No need to warn repeatedly, error on startup and lack of function should be enough.
+            return;
+        }
+        try {
+            this.playerInteractManagerGamemode.setAccessible(true);
+            this.playerInteractManagerGamemode.set(player.d, gameMode);
+        } catch (IllegalArgumentException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/OpenPlayer.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import net.minecraft.nbt.NBTCompressedStreamTools;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.world.level.storage.WorldNBTStorage;
+import org.apache.logging.log4j.LogManager;
+import org.bukkit.craftbukkit.v1_17_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer;
+
+public class OpenPlayer extends CraftPlayer {
+
+    public OpenPlayer(CraftServer server, EntityPlayer entity) {
+        super(server, entity);
+    }
+
+    @Override
+    public void loadData() {
+        // See CraftPlayer#loadData
+        NBTTagCompound loaded = this.server.getHandle().r.load(this.getHandle());
+        if (loaded != null) {
+            readExtraData(loaded);
+        }
+    }
+
+    @Override
+    public void saveData() {
+        EntityPlayer player = this.getHandle();
+        // See net.minecraft.world.level.storage.WorldNBTStorage#save(EntityHuman)
+        try {
+            WorldNBTStorage worldNBTStorage = player.c.getPlayerList().r;
+
+            NBTTagCompound playerData = player.save(new NBTTagCompound());
+            setExtraData(playerData);
+
+            if (!isOnline()) {
+                // Special case: save old vehicle data
+                NBTTagCompound oldData = worldNBTStorage.load(player);
+
+                if (oldData != null && oldData.hasKeyOfType("RootVehicle", 10)) {
+                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
+                    playerData.set("RootVehicle", oldData.getCompound("RootVehicle"));
+                }
+            }
+
+            File file = new File(worldNBTStorage.getPlayerDir(), player.getUniqueIDString() + ".dat.tmp");
+            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getUniqueIDString() + ".dat");
+
+            NBTCompressedStreamTools.a(playerData, new FileOutputStream(file));
+
+            if (file1.exists() && !file1.delete() || !file.renameTo(file1)) {
+                LogManager.getLogger().warn("Failed to save player data for {}", player.getDisplayName().getString());
+            }
+
+        } catch (Exception e) {
+            LogManager.getLogger().warn("Failed to save player data for {}", player.getDisplayName().getString());
+        }
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/PlayerDataManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,7 +14,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.lishid.openinv.internal.v1_18_R2;
+package com.lishid.openinv.internal.v1_17_R1;
 
 import com.lishid.openinv.OpenInv;
 import com.lishid.openinv.internal.IPlayerDataManager;
@@ -22,23 +22,24 @@ import com.lishid.openinv.internal.ISpecialInventory;
 import com.lishid.openinv.internal.OpenInventoryView;
 import com.mojang.authlib.GameProfile;
 import java.lang.reflect.Field;
+import java.util.logging.Level;
 import java.util.logging.Logger;
-import net.minecraft.network.chat.TextComponent;
-import net.minecraft.network.protocol.game.ClientboundOpenScreenPacket;
+import net.minecraft.network.chat.ChatComponentText;
+import net.minecraft.network.protocol.game.PacketPlayOutOpenWindow;
 import net.minecraft.server.MinecraftServer;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.server.level.WorldServer;
 import net.minecraft.world.entity.Entity;
-import net.minecraft.world.inventory.AbstractContainerMenu;
-import net.minecraft.world.inventory.MenuType;
-import net.minecraft.world.level.Level;
+import net.minecraft.world.inventory.Container;
+import net.minecraft.world.inventory.Containers;
+import net.minecraft.world.level.World;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Server;
-import org.bukkit.craftbukkit.v1_18_R2.CraftServer;
-import org.bukkit.craftbukkit.v1_18_R2.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_18_R2.event.CraftEventFactory;
-import org.bukkit.craftbukkit.v1_18_R2.inventory.CraftContainer;
+import org.bukkit.craftbukkit.v1_17_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_17_R1.event.CraftEventFactory;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftContainer;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
@@ -54,21 +55,21 @@ public class PlayerDataManager implements IPlayerDataManager {
         } catch (NoSuchFieldException e) {
             Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
             logger.warning("Unable to obtain field to inject custom save process - players' mounts may be deleted when loaded.");
-            logger.log(java.util.logging.Level.WARNING, e.getMessage(), e);
+            logger.log(Level.WARNING, e.getMessage(), e);
             bukkitEntity = null;
         }
     }
 
-    public static @NotNull ServerPlayer getHandle(final Player player) {
+    public static @NotNull EntityPlayer getHandle(final Player player) {
         if (player instanceof CraftPlayer) {
             return ((CraftPlayer) player).getHandle();
         }
 
         Server server = player.getServer();
-        ServerPlayer nmsPlayer = null;
+        EntityPlayer nmsPlayer = null;
 
         if (server instanceof CraftServer) {
-            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getUniqueId());
+            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getName());
         }
 
         if (nmsPlayer == null) {
@@ -91,13 +92,13 @@ public class PlayerDataManager implements IPlayerDataManager {
         GameProfile profile = new GameProfile(offline.getUniqueId(),
                 offline.getName() != null ? offline.getName() : offline.getUniqueId().toString());
         MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
-        ServerLevel worldServer = server.getLevel(Level.OVERWORLD);
+        WorldServer worldServer = server.getWorldServer(World.f);
 
         if (worldServer == null) {
             return null;
         }
 
-        ServerPlayer entity = new ServerPlayer(server, worldServer, profile);
+        EntityPlayer entity = new EntityPlayer(server, worldServer, profile);
 
         try {
             injectPlayer(entity);
@@ -115,24 +116,21 @@ public class PlayerDataManager implements IPlayerDataManager {
         return target;
     }
 
-    void injectPlayer(ServerPlayer player) throws IllegalAccessException {
+    void injectPlayer(EntityPlayer player) throws IllegalAccessException {
         if (bukkitEntity == null) {
             return;
         }
 
         bukkitEntity.setAccessible(true);
 
-        bukkitEntity.set(player, new OpenPlayer(player.server.server, player));
+        bukkitEntity.set(player, new OpenPlayer(player.c.server, player));
     }
 
     @NotNull
     @Override
     public Player inject(@NotNull Player player) {
         try {
-            ServerPlayer nmsPlayer = getHandle(player);
-            if (nmsPlayer.getBukkitEntity() instanceof OpenPlayer openPlayer) {
-                return openPlayer;
-            }
+            EntityPlayer nmsPlayer = getHandle(player);
             injectPlayer(nmsPlayer);
             return nmsPlayer.getBukkitEntity();
         } catch (IllegalAccessException e) {
@@ -145,9 +143,9 @@ public class PlayerDataManager implements IPlayerDataManager {
     @Override
     public InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
 
-        ServerPlayer nmsPlayer = getHandle(player);
+        EntityPlayer nmsPlayer = getHandle(player);
 
-        if (nmsPlayer.connection == null) {
+        if (nmsPlayer.b == null) {
             return null;
         }
 
@@ -157,23 +155,23 @@ public class PlayerDataManager implements IPlayerDataManager {
             return player.openInventory(inventory.getBukkitInventory());
         }
 
-        AbstractContainerMenu container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
+        Container container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
             @Override
-            public MenuType<?> getType() {
+            public Containers<?> getType() {
                 return getContainers(inventory.getBukkitInventory().getSize());
             }
         };
 
-        container.setTitle(new TextComponent(view.getTitle()));
+        container.setTitle(new ChatComponentText(view.getTitle()));
         container = CraftEventFactory.callInventoryOpenEvent(nmsPlayer, container);
 
         if (container == null) {
             return null;
         }
 
-        nmsPlayer.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(),
-                new TextComponent(container.getBukkitView().getTitle())));
-        nmsPlayer.containerMenu = container;
+        nmsPlayer.b.sendPacket(new PacketPlayOutOpenWindow(container.j, container.getType(),
+                new ChatComponentText(container.getBukkitView().getTitle())));
+        nmsPlayer.bV = container;
         nmsPlayer.initMenu(container);
 
         return container.getBukkitView();
@@ -190,15 +188,15 @@ public class PlayerDataManager implements IPlayerDataManager {
         }
     }
 
-    static @NotNull MenuType<?> getContainers(int inventorySize) {
+    static @NotNull Containers<?> getContainers(int inventorySize) {
 
         return switch (inventorySize) {
-            case 9 -> MenuType.GENERIC_9x1;
-            case 18 -> MenuType.GENERIC_9x2;
-            case 36 -> MenuType.GENERIC_9x4; // PLAYER
-            case 41, 45 -> MenuType.GENERIC_9x5;
-            case 54 -> MenuType.GENERIC_9x6;
-            default -> MenuType.GENERIC_9x3; // Default 27-slot inventory
+            case 9 -> Containers.a;
+            case 18 -> Containers.b;
+            case 36 -> Containers.d; // PLAYER
+            case 41, 45 -> Containers.e;
+            case 54 -> Containers.f;
+            default -> Containers.c; // 9x3
         };
     }
 

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/SpecialEnderChest.java

@@ -0,0 +1,341 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.NBTTagList;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.world.ContainerUtil;
+import net.minecraft.world.IInventoryListener;
+import net.minecraft.world.entity.player.AutoRecipeStackManager;
+import net.minecraft.world.entity.player.EntityHuman;
+import net.minecraft.world.inventory.InventoryEnderChest;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.entity.TileEntityEnderChest;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialEnderChest extends InventoryEnderChest implements ISpecialEnderChest {
+
+    private final CraftInventory inventory;
+    private EntityPlayer owner;
+    private NonNullList<ItemStack> c;
+    private boolean playerOnline;
+
+    public SpecialEnderChest(final Player player, final Boolean online) {
+        super(PlayerDataManager.getHandle(player));
+        this.inventory = new CraftInventory(this);
+        this.owner = PlayerDataManager.getHandle(player);
+        this.playerOnline = online;
+        this.c = this.owner.getEnderChest().c;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return inventory;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final Player player) {
+        if (!this.playerOnline) {
+            try {
+                this.owner = PlayerDataManager.getHandle(player);
+                InventoryEnderChest enderChest = owner.getEnderChest();
+                for (int i = 0; i < enderChest.getSize(); ++i) {
+                    enderChest.setItem(i, this.c.get(i));
+                }
+                this.c = enderChest.c;
+                enderChest.transaction.addAll(this.transaction);
+            } catch (Exception ignored) {}
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull Player getPlayer() {
+        return owner.getBukkitEntity();
+    }
+
+    @Override
+    public void update() {
+        this.owner.getEnderChest().update();
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.c;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        super.onOpen(who);
+        this.owner.getEnderChest().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        super.onClose(who);
+        this.owner.getEnderChest().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.owner.getEnderChest().getViewers();
+    }
+
+    @Override
+    public boolean a(EntityHuman entityhuman) {
+        return true;
+    }
+
+    @Override
+    public void a(TileEntityEnderChest tileentityenderchest) {
+        this.owner.getEnderChest().a(tileentityenderchest);
+    }
+
+    @Override
+    public boolean b(TileEntityEnderChest tileentityenderchest) {
+        return this.owner.getEnderChest().b(tileentityenderchest);
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return this.owner.getEnderChest().getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int i) {
+        this.owner.getEnderChest().setMaxStackSize(i);
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.owner.getEnderChest().getOwner();
+    }
+
+    @Override
+    public @Nullable Location getLocation() {
+        return null;
+    }
+
+    @Override
+    public void a(IInventoryListener iinventorylistener) {
+        this.owner.getEnderChest().a(iinventorylistener);
+    }
+
+    @Override
+    public void b(IInventoryListener iinventorylistener) {
+        this.owner.getEnderChest().b(iinventorylistener);
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        return i >= 0 && i < this.c.size() ? this.c.get(i) : ItemStack.b;
+    }
+
+    @Override
+    public ItemStack splitStack(int i, int j) {
+        ItemStack itemstack = ContainerUtil.a(this.c, i, j);
+        if (!itemstack.isEmpty()) {
+            this.update();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public ItemStack a(ItemStack itemstack) {
+        ItemStack itemstack1 = itemstack.cloneItemStack();
+        this.d(itemstack1);
+        if (itemstack1.isEmpty()) {
+            return ItemStack.b;
+        } else {
+            this.c(itemstack1);
+            return itemstack1.isEmpty() ? ItemStack.b : itemstack1;
+        }
+    }
+
+    private void c(ItemStack itemstack) {
+        for(int i = 0; i < this.getSize(); ++i) {
+            ItemStack itemstack1 = this.getItem(i);
+            if (itemstack1.isEmpty()) {
+                this.setItem(i, itemstack.cloneItemStack());
+                itemstack.setCount(0);
+                return;
+            }
+        }
+    }
+
+    private void d(ItemStack itemstack) {
+        for(int i = 0; i < this.getSize(); ++i) {
+            ItemStack itemstack1 = this.getItem(i);
+            if (ItemStack.e(itemstack1, itemstack)) {
+                this.a(itemstack, itemstack1);
+                if (itemstack.isEmpty()) {
+                    return;
+                }
+            }
+        }
+    }
+
+    private void a(ItemStack itemstack, ItemStack itemstack1) {
+        int i = Math.min(this.getMaxStackSize(), itemstack1.getMaxStackSize());
+        int j = Math.min(itemstack.getCount(), i - itemstack1.getCount());
+        if (j > 0) {
+            itemstack1.add(j);
+            itemstack.subtract(j);
+            this.update();
+        }
+    }
+
+    @Override
+    public ItemStack splitWithoutUpdate(int i) {
+        ItemStack itemstack = this.c.get(i);
+        if (itemstack.isEmpty()) {
+            return ItemStack.b;
+        } else {
+            this.c.set(i, ItemStack.b);
+            return itemstack;
+        }
+    }
+
+    @Override
+    public void setItem(int i, ItemStack itemstack) {
+        this.c.set(i, itemstack);
+        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
+            itemstack.setCount(this.getMaxStackSize());
+        }
+
+        this.update();
+    }
+
+    @Override
+    public int getSize() {
+        return this.owner.getEnderChest().getSize();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return this.c.stream().allMatch(ItemStack::isEmpty);
+    }
+
+    @Override
+    public void startOpen(EntityHuman entityhuman) {
+    }
+
+    @Override
+    public void closeContainer(EntityHuman entityhuman) {
+    }
+
+    @Override
+    public boolean b(int i, ItemStack itemstack) {
+        return true;
+    }
+
+    @Override
+    public void clear() {
+        this.c.clear();
+        this.update();
+    }
+
+    @Override
+    public void a(AutoRecipeStackManager autorecipestackmanager) {
+        for (ItemStack itemstack : this.c) {
+            autorecipestackmanager.b(itemstack);
+        }
+
+    }
+
+    @Override
+    public List<ItemStack> f() {
+        List<ItemStack> list = this.c.stream().filter(Predicate.not(ItemStack::isEmpty)).collect(Collectors.toList());
+        this.clear();
+        return list;
+    }
+
+    @Override
+    public ItemStack a(Item item, int i) {
+        ItemStack itemstack = new ItemStack(item, 0);
+
+        for(int j = this.getSize() - 1; j >= 0; --j) {
+            ItemStack itemstack1 = this.getItem(j);
+            if (itemstack1.getItem().equals(item)) {
+                int k = i - itemstack.getCount();
+                ItemStack itemstack2 = itemstack1.cloneAndSubtract(k);
+                itemstack.add(itemstack2.getCount());
+                if (itemstack.getCount() == i) {
+                    break;
+                }
+            }
+        }
+
+        if (!itemstack.isEmpty()) {
+            this.update();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public boolean b(ItemStack itemStack) {
+        for (ItemStack itemStack1 : this.c) {
+            if (itemStack1.isEmpty() || ItemStack.e(itemStack1, itemStack) && itemStack1.getCount() < itemStack1.getMaxStackSize()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return this.c.stream().filter((itemStack) -> !itemStack.isEmpty()).collect(Collectors.toList()).toString();
+    }
+
+    @Override
+    public void a(NBTTagList nbttaglist) {
+        for(int i = 0; i < nbttaglist.size(); ++i) {
+            ItemStack itemstack = ItemStack.a(nbttaglist.getCompound(i));
+            if (!itemstack.isEmpty()) {
+                this.a(itemstack);
+            }
+        }
+
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/SpecialPlayerInventory.java

@@ -0,0 +1,777 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.google.common.collect.ImmutableList;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.util.Collection;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportSystemDetails;
+import net.minecraft.ReportedException;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagList;
+import net.minecraft.network.chat.ChatMessage;
+import net.minecraft.network.chat.IChatBaseComponent;
+import net.minecraft.network.protocol.game.PacketPlayOutSetSlot;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.tags.Tag;
+import net.minecraft.world.ContainerUtil;
+import net.minecraft.world.IInventory;
+import net.minecraft.world.damagesource.DamageSource;
+import net.minecraft.world.entity.EnumItemSlot;
+import net.minecraft.world.entity.player.AutoRecipeStackManager;
+import net.minecraft.world.entity.player.EntityHuman;
+import net.minecraft.world.entity.player.PlayerInventory;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemArmor;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.state.IBlockData;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+
+public class SpecialPlayerInventory extends PlayerInventory implements ISpecialPlayerInventory {
+
+    private final CraftInventory inventory;
+    private boolean playerOnline;
+    private EntityHuman l;
+    private NonNullList<ItemStack> h;
+    private NonNullList<ItemStack> i;
+    private NonNullList<ItemStack> j;
+    private List<NonNullList<ItemStack>> n;
+
+    public SpecialPlayerInventory(final Player bukkitPlayer, final Boolean online) {
+        super(PlayerDataManager.getHandle(bukkitPlayer));
+        this.inventory = new CraftInventory(this);
+        this.playerOnline = online;
+        this.l = super.l;
+        this.h = this.l.getInventory().h;
+        this.i = this.l.getInventory().i;
+        this.j = this.l.getInventory().j;
+        this.n = ImmutableList.of(this.h, this.i, this.j);
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final Player player) {
+        if (!this.playerOnline) {
+            EntityPlayer entityPlayer = PlayerDataManager.getHandle(player);
+            entityPlayer.getInventory().transaction.addAll(this.transaction);
+            this.l = entityPlayer;
+            for (int i = 0; i < getSize(); ++i) {
+                this.l.getInventory().setItem(i, getRawItem(i));
+            }
+            this.l.getInventory().k = this.k;
+            this.h = this.l.getInventory().h;
+            this.i = this.l.getInventory().i;
+            this.j = this.l.getInventory().j;
+            this.n = ImmutableList.of(this.h, this.i, this.j);
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public boolean a(final EntityHuman entityhuman) {
+        return true;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return this.inventory;
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        List<ItemStack> list = this.h;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.i;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.j;
+        } else if (list == this.i) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        return list.get(i);
+    }
+
+    private ItemStack getRawItem(int i) {
+        NonNullList<ItemStack> list = null;
+        for (NonNullList<ItemStack> next : this.n) {
+            if (i < next.size()) {
+                list = next;
+                break;
+            }
+            i -= next.size();
+        }
+
+        return list == null ? ItemStack.b : list.get(i);
+    }
+
+    @Override
+    public IChatBaseComponent getDisplayName() {
+        return new ChatMessage(this.l.getName());
+    }
+
+    @Override
+    public boolean hasCustomName() {
+        return false;
+    }
+
+    private int getReversedArmorSlotNum(final int i) {
+        if (i == 0) {
+            return 3;
+        }
+        if (i == 1) {
+            return 2;
+        }
+        if (i == 2) {
+            return 1;
+        }
+        if (i == 3) {
+            return 0;
+        }
+        return i;
+    }
+
+    private int getReversedItemSlotNum(final int i) {
+        if (i >= 27) {
+            return i - 27;
+        }
+        return i + 9;
+    }
+
+    @Override
+    public int getSize() {
+        return 45;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setItem(int i, final ItemStack itemstack) {
+        List<ItemStack> list = this.h;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.i;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.j;
+        } else if (list == this.i) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            this.l.drop(itemstack, true);
+            return;
+        }
+
+        list.set(i, itemstack);
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public @NotNull HumanEntity getPlayer() {
+        return this.l.getBukkitEntity();
+    }
+
+    @Override
+    public ItemStack splitStack(int i, final int j) {
+        List<ItemStack> list = this.h;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.i;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.j;
+        } else if (list == this.i) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        return list.get(i).isEmpty() ? ItemStack.b : ContainerUtil.a(list, i, j);
+    }
+
+    @Override
+    public ItemStack splitWithoutUpdate(int i) {
+        List<ItemStack> list = this.h;
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.i;
+        } else {
+            i = this.getReversedItemSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            i -= list.size();
+            list = this.j;
+        } else if (list == this.i) {
+            i = this.getReversedArmorSlotNum(i);
+        }
+
+        if (i >= list.size()) {
+            return ItemStack.b;
+        }
+
+        if (!list.get(i).isEmpty()) {
+            ItemStack itemstack = list.get(i);
+
+            list.set(i, ItemStack.b);
+            return itemstack;
+        }
+
+        return ItemStack.b;
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.n.stream().flatMap(Collection::stream).collect(Collectors.toList());
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return this.n.stream().flatMap(Collection::stream).allMatch(ItemStack::isEmpty);
+    }
+
+    @Override
+    public List<ItemStack> getArmorContents() {
+        return this.i;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.transaction.add(who);
+        this.l.getInventory().transaction.add(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.transaction.remove(who);
+        this.l.getInventory().transaction.remove(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.transaction;
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.l.getBukkitEntity();
+    }
+
+    public Location getLocation() {
+        return this.l.getBukkitEntity().getLocation();
+    }
+
+    /* Below this point largely just copied out of NMS to redirect to our overridden variables. */
+
+    @Override
+    public ItemStack getItemInHand() {
+        return d(this.k) ? this.h.get(this.k) : ItemStack.b;
+    }
+
+    private boolean isSimilarAndNotFull(ItemStack itemstack, ItemStack itemstack1) {
+        return !itemstack.isEmpty() && ItemStack.e(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
+    }
+
+    @Override
+    public int canHold(ItemStack itemstack) {
+        int remains = itemstack.getCount();
+
+        for(int i = 0; i < this.h.size(); ++i) {
+            ItemStack itemstack1 = this.getItem(i);
+            if (itemstack1.isEmpty()) {
+                return itemstack.getCount();
+            }
+
+            if (this.isSimilarAndNotFull(itemstack1, itemstack)) {
+                remains -= (Math.min(itemstack1.getMaxStackSize(), this.getMaxStackSize())) - itemstack1.getCount();
+            }
+
+            if (remains <= 0) {
+                return itemstack.getCount();
+            }
+        }
+
+        ItemStack offhandItemStack = this.getItem(this.h.size() + this.i.size());
+        if (this.isSimilarAndNotFull(offhandItemStack, itemstack)) {
+            remains -= (Math.min(offhandItemStack.getMaxStackSize(), this.getMaxStackSize())) - offhandItemStack.getCount();
+        }
+
+        return remains <= 0 ? itemstack.getCount() : itemstack.getCount() - remains;
+    }
+
+    @Override
+    public int getFirstEmptySlotIndex() {
+        for(int i = 0; i < this.h.size(); ++i) {
+            if (this.h.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public void a(ItemStack itemstack) {
+        int i = this.b(itemstack);
+        if (d(i)) {
+            this.k = i;
+        } else if (i == -1) {
+            this.k = this.i();
+            if (!this.h.get(this.k).isEmpty()) {
+                int j = this.getFirstEmptySlotIndex();
+                if (j != -1) {
+                    this.h.set(j, this.h.get(this.k));
+                }
+            }
+
+            this.h.set(this.k, itemstack);
+        } else {
+            this.c(i);
+        }
+
+    }
+
+    @Override
+    public void c(int i) {
+        this.k = this.i();
+        ItemStack itemstack = this.h.get(this.k);
+        this.h.set(this.k, this.h.get(i));
+        this.h.set(i, itemstack);
+    }
+
+    @Override
+    public int b(ItemStack itemstack) {
+        for (int i = 0; i < this.h.size(); ++i) {
+            if (!this.h.get(i).isEmpty() && ItemStack.e(itemstack, this.h.get(i))) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int c(ItemStack itemstack) {
+        for (int i = 0; i < this.h.size(); ++i) {
+            ItemStack itemstack1 = this.h.get(i);
+            if (!this.h.get(i).isEmpty() && ItemStack.e(itemstack, this.h.get(i)) && !this.h.get(i).g() && !itemstack1.hasEnchantments() && !itemstack1.hasName()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int i() {
+        int i;
+        int j;
+        for (j = 0; j < 9; ++j) {
+            i = (this.k + j) % 9;
+            if (this.h.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        for (j = 0; j < 9; ++j) {
+            i = (this.k + j) % 9;
+            if (!this.h.get(i).hasEnchantments()) {
+                return i;
+            }
+        }
+
+        return this.k;
+    }
+
+    @Override
+    public void a(double d0) {
+        if (d0 > 0.0D) {
+            d0 = 1.0D;
+        }
+
+        if (d0 < 0.0D) {
+            d0 = -1.0D;
+        }
+
+        this.k = (int) (this.k - d0);
+
+        while (this.k < 0) {
+            this.k += 9;
+        }
+
+        while (this.k >= 9) {
+            this.k -= 9;
+        }
+
+    }
+
+    @Override
+    public int a(Predicate<ItemStack> predicate, int i, IInventory iinventory) {
+        byte b0 = 0;
+        boolean flag = i == 0;
+        int j = b0 + ContainerUtil.a(this, predicate, i - b0, flag);
+        j += ContainerUtil.a(iinventory, predicate, i - j, flag);
+        ItemStack itemstack = this.l.bV.getCarried();
+        j += ContainerUtil.a(itemstack, predicate, i - j, flag);
+        if (itemstack.isEmpty()) {
+            this.l.bV.setCarried(ItemStack.b);
+        }
+
+        return j;
+    }
+
+    private int i(ItemStack itemstack) {
+        int i = this.firstPartial(itemstack);
+        if (i == -1) {
+            i = this.getFirstEmptySlotIndex();
+        }
+
+        return i == -1 ? itemstack.getCount() : this.d(i, itemstack);
+    }
+
+    private int d(int i, ItemStack itemstack) {
+        Item item = itemstack.getItem();
+        int j = itemstack.getCount();
+        ItemStack itemstack1 = this.getItem(i);
+        if (itemstack1.isEmpty()) {
+            itemstack1 = new ItemStack(item, 0);
+            if (itemstack.hasTag()) {
+                itemstack1.setTag(Objects.requireNonNull(itemstack.getTag()).clone());
+            }
+
+            this.setItem(i, itemstack1);
+        }
+
+        k = Math.min(j, itemstack1.getMaxStackSize() - itemstack1.getCount());
+
+        if (k > this.getMaxStackSize() - itemstack1.getCount()) {
+            k = this.getMaxStackSize() - itemstack1.getCount();
+        }
+
+        if (k != 0) {
+            j -= k;
+            itemstack1.add(k);
+            itemstack1.d(5);
+        }
+
+        return j;
+    }
+
+    @Override
+    public int firstPartial(ItemStack itemstack) {
+        if (this.isSimilarAndNotFull(this.getItem(this.k), itemstack)) {
+            return this.k;
+        } else if (this.isSimilarAndNotFull(this.getItem(40), itemstack)) {
+            return 40;
+        } else {
+            for(int i = 0; i < this.h.size(); ++i) {
+                if (this.isSimilarAndNotFull(this.h.get(i), itemstack)) {
+                    return i;
+                }
+            }
+
+            return -1;
+        }
+    }
+
+    @Override
+    public void j() {
+        for (NonNullList<ItemStack> nonNullList : this.n) {
+            for (int i = 0; i < nonNullList.size(); ++i) {
+                if (!nonNullList.get(i).isEmpty()) {
+                    nonNullList.get(i).a(this.l.t, this.l, i, this.k == i);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public boolean pickup(ItemStack itemStack) {
+        return this.c(-1, itemStack);
+    }
+
+    @Override
+    public boolean c(int i, ItemStack itemStack) {
+        if (itemStack.isEmpty()) {
+            return false;
+        } else {
+            try {
+                if (itemStack.g()) {
+                    if (i == -1) {
+                        i = this.getFirstEmptySlotIndex();
+                    }
+
+                    if (i >= 0) {
+                        this.h.set(i, itemStack.cloneItemStack());
+                        this.h.get(i).d(5);
+                        itemStack.setCount(0);
+                        return true;
+                    } else if (this.l.getAbilities().d) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return false;
+                    }
+                } else {
+                    int j;
+                    do {
+                        j = itemStack.getCount();
+                        if (i == -1) {
+                            itemStack.setCount(this.i(itemStack));
+                        } else {
+                            itemStack.setCount(this.d(i, itemStack));
+                        }
+                    } while(!itemStack.isEmpty() && itemStack.getCount() < j);
+
+                    if (itemStack.getCount() == j && this.l.getAbilities().d) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return itemStack.getCount() < j;
+                    }
+                }
+            } catch (Throwable var6) {
+                CrashReport crashreport = CrashReport.a(var6, "Adding item to inventory");
+                CrashReportSystemDetails crashreportsystemdetails = crashreport.a("Item being added");
+                crashreportsystemdetails.a("Item ID", Item.getId(itemStack.getItem()));
+                crashreportsystemdetails.a("Item data", itemStack.getDamage());
+                crashreportsystemdetails.a("Item name", () -> itemStack.getName().getString());
+                throw new ReportedException(crashreport);
+            }
+        }
+    }
+
+    @Override
+    public void f(ItemStack itemStack) {
+        this.a(itemStack, true);
+    }
+
+    @Override
+    public void a(ItemStack itemStack, boolean flag) {
+        while(true) {
+            if (!itemStack.isEmpty()) {
+                int i = this.firstPartial(itemStack);
+                if (i == -1) {
+                    i = this.getFirstEmptySlotIndex();
+                }
+
+                if (i != -1) {
+                    int j = itemStack.getMaxStackSize() - this.getItem(i).getCount();
+                    if (this.c(i, itemStack.cloneAndSubtract(j)) && flag && this.l instanceof EntityPlayer) {
+                        ((EntityPlayer)this.l).b.sendPacket(new PacketPlayOutSetSlot(-2, i, this.getItem(i)));
+                    }
+                    continue;
+                }
+
+                this.l.drop(itemStack, false);
+            }
+
+            return;
+        }
+    }
+
+    @Override
+    public void g(ItemStack itemStack) {
+        for (NonNullList<ItemStack> nonNullList : this.n) {
+            for (int i = 0; i < nonNullList.size(); ++i) {
+                if (nonNullList.get(i) == itemStack) {
+                    nonNullList.set(i, ItemStack.b);
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public float a(IBlockData iBlockData) {
+        return this.h.get(this.k).a(iBlockData);
+    }
+
+    @Override
+    public NBTTagList a(NBTTagList nbtTagList) {
+        NBTTagCompound nbttagcompound;
+        int i;
+        for(i = 0; i < this.h.size(); ++i) {
+            if (!this.h.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte)i);
+                this.h.get(i).save(nbttagcompound);
+                nbtTagList.add(nbttagcompound);
+            }
+        }
+
+        for(i = 0; i < this.i.size(); ++i) {
+            if (!this.i.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte)(i + 100));
+                this.i.get(i).save(nbttagcompound);
+                nbtTagList.add(nbttagcompound);
+            }
+        }
+
+        for(i = 0; i < this.j.size(); ++i) {
+            if (!this.j.get(i).isEmpty()) {
+                nbttagcompound = new NBTTagCompound();
+                nbttagcompound.setByte("Slot", (byte)(i + 150));
+                this.j.get(i).save(nbttagcompound);
+                nbtTagList.add(nbttagcompound);
+            }
+        }
+
+        return nbtTagList;
+    }
+
+    @Override
+    public void b(NBTTagList nbtTagList) {
+        this.h.clear();
+        this.i.clear();
+        this.j.clear();
+
+        for(int i = 0; i < nbtTagList.size(); ++i) {
+            NBTTagCompound nbttagcompound = nbtTagList.getCompound(i);
+            int j = nbttagcompound.getByte("Slot") & 255;
+            ItemStack itemstack = ItemStack.a(nbttagcompound);
+            if (!itemstack.isEmpty()) {
+                if (j < this.h.size()) {
+                    this.h.set(j, itemstack);
+                } else if (j >= 100 && j < this.i.size() + 100) {
+                    this.i.set(j - 100, itemstack);
+                } else if (j >= 150 && j < this.j.size() + 150) {
+                    this.j.set(j - 150, itemstack);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public ItemStack e(int i) {
+        return this.i.get(i);
+    }
+
+    @Override
+    public void a(DamageSource damageSource, float f, int[] intArray) {
+        if (f > 0.0F) {
+            f /= 4.0F;
+            if (f < 1.0F) {
+                f = 1.0F;
+            }
+
+            for (int index : intArray) {
+                ItemStack itemstack = this.i.get(index);
+                if ((!damageSource.isFire() || !itemstack.getItem().w()) && itemstack.getItem() instanceof ItemArmor) {
+                    itemstack.damage((int) f, this.l, (entityHuman) -> entityHuman.broadcastItemBreak(EnumItemSlot.a(EnumItemSlot.Function.b, index)));
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public void dropContents() {
+        for (List<ItemStack> list : this.n) {
+            for (int i = 0; i < list.size(); ++i) {
+                ItemStack itemstack = list.get(i);
+                if (!itemstack.isEmpty()) {
+                    list.set(i, ItemStack.b);
+                    this.l.a(itemstack, true, false);
+                }
+            }
+        }
+    }
+
+    @Override
+    public boolean h(ItemStack itemStack) {
+        return this.n.stream()
+                .flatMap(Collection::stream)
+                .anyMatch(itemStack1 -> !itemStack1.isEmpty() && itemStack1.doMaterialsMatch(itemStack));
+    }
+
+    @Override
+    public boolean a(Tag<Item> tag) {
+        return this.n.stream()
+                .flatMap(Collection::stream)
+                .anyMatch(itemStack -> !itemStack.isEmpty() && itemStack.a(tag));
+    }
+
+    @Override
+    public void a(PlayerInventory playerInventory) {
+        for(int i = 0; i < this.getSize(); ++i) {
+            this.setItem(i, playerInventory.getItem(i));
+        }
+
+        this.k = playerInventory.k;
+    }
+
+    @Override
+    public void clear() {
+        for (List<ItemStack> list : this.n) {
+            list.clear();
+        }
+    }
+
+    @Override
+    public void a(AutoRecipeStackManager autoRecipeStackManager) {
+        for (ItemStack itemstack : this.h) {
+            autoRecipeStackManager.a(itemstack);
+        }
+    }
+
+}

internal/v1_18_R2/src/main/java/com/lishid/openinv/internal/v1_18_R2/AnySilentContainer.java

@@ -1,281 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_18_R2;
-
-import com.lishid.openinv.OpenInv;
-import com.lishid.openinv.internal.IAnySilentContainer;
-import com.lishid.openinv.util.ReflectionHelper;
-import java.lang.reflect.Field;
-import java.util.Optional;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-import net.minecraft.core.BlockPos;
-import net.minecraft.network.chat.TranslatableComponent;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.server.level.ServerPlayerGameMode;
-import net.minecraft.world.CompoundContainer;
-import net.minecraft.world.MenuProvider;
-import net.minecraft.world.SimpleMenuProvider;
-import net.minecraft.world.entity.monster.Shulker;
-import net.minecraft.world.inventory.ChestMenu;
-import net.minecraft.world.inventory.MenuType;
-import net.minecraft.world.inventory.PlayerEnderChestContainer;
-import net.minecraft.world.level.GameType;
-import net.minecraft.world.level.block.BarrelBlock;
-import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.ChestBlock;
-import net.minecraft.world.level.block.DoubleBlockCombiner;
-import net.minecraft.world.level.block.ShulkerBoxBlock;
-import net.minecraft.world.level.block.TrappedChestBlock;
-import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.entity.ChestBlockEntity;
-import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
-import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
-import net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.phys.AABB;
-import org.bukkit.Bukkit;
-import org.bukkit.Material;
-import org.bukkit.Statistic;
-import org.bukkit.block.ShulkerBox;
-import org.bukkit.craftbukkit.v1_18_R2.CraftWorld;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.InventoryView;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class AnySilentContainer implements IAnySilentContainer {
-
-    private @Nullable Field serverPlayerGameModeGameType;
-
-    public AnySilentContainer() {
-        try {
-            try {
-                // IDE warns about field not existing, but SpecialSource does not remap strings used in reflection.
-                // The warning is not suppressed as a reminder that it must manually be checked on updates.
-                this.serverPlayerGameModeGameType = ServerPlayerGameMode.class.getDeclaredField("b");
-                this.serverPlayerGameModeGameType.setAccessible(true);
-            } catch (NoSuchFieldException e) {
-                Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
-                logger.warning("ServerPlayerGameMode#gameModeForPlayer's obfuscated name has changed!");
-                logger.warning("Please report this at https://github.com/Jikoo/OpenInv/issues");
-                logger.warning("Attempting to fall through using reflection. Please verify that SilentContainer does not fail.");
-                // N.B. gameModeForPlayer is (for now) declared before previousGameModeForPlayer so silent shouldn't break.
-                this.serverPlayerGameModeGameType = ReflectionHelper.grabFieldByType(ServerPlayerGameMode.class, GameType.class);
-            }
-        } catch (SecurityException e) {
-            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
-            logger.warning("Unable to directly write player game mode! SilentContainer will fail.");
-            logger.log(Level.WARNING, "Error obtaining GameType field", e);
-        }
-    }
-
-    @Override
-    public boolean isShulkerBlocked(@NotNull ShulkerBox shulkerBox) {
-        org.bukkit.World bukkitWorld = shulkerBox.getWorld();
-        if (!(bukkitWorld instanceof CraftWorld)) {
-            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
-        }
-
-        if (!(bukkitWorld instanceof CraftWorld craftWorld)) {
-            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
-            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
-            return false;
-        }
-
-        final ServerLevel world = craftWorld.getHandle();
-        final BlockPos blockPosition = new BlockPos(shulkerBox.getX(), shulkerBox.getY(), shulkerBox.getZ());
-        final BlockEntity tile = world.getBlockEntity(blockPosition);
-
-        if (!(tile instanceof ShulkerBoxBlockEntity shulkerBoxBlockEntity)
-                || shulkerBoxBlockEntity.getAnimationStatus() != ShulkerBoxBlockEntity.AnimationStatus.CLOSED) {
-            return false;
-        }
-
-        BlockState blockState = world.getBlockState(blockPosition);
-
-        // See net.minecraft.world.level.block.ShulkerBoxBlock#canOpen
-        AABB boundingBox = Shulker.getProgressDeltaAabb(blockState.getValue(ShulkerBoxBlock.FACING), 0.0F, 0.5F)
-                .move(blockPosition)
-                .deflate(1.0E-6D);
-        return !world.noCollision(boundingBox);
-    }
-
-    @Override
-    public boolean activateContainer(
-            @NotNull final Player bukkitPlayer,
-            final boolean silentchest,
-            @NotNull final org.bukkit.block.Block bukkitBlock) {
-
-        // Silent ender chest is API-only
-        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
-            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
-            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
-            return true;
-        }
-
-        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
-
-        final ServerLevel level = player.getLevel();
-        final BlockPos blockPos = new BlockPos(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
-        final BlockEntity blockEntity = level.getBlockEntity(blockPos);
-
-        if (blockEntity == null) {
-            return false;
-        }
-
-        if (blockEntity instanceof EnderChestBlockEntity enderChestTile) {
-            // Anychest ender chest. See net.minecraft.world.level.block.EnderChestBlock
-            PlayerEnderChestContainer enderChest = player.getEnderChestInventory();
-            enderChest.setActiveChest(enderChestTile);
-            player.openMenu(new SimpleMenuProvider((containerCounter, playerInventory, ignored) -> {
-                MenuType<?> containers = PlayerDataManager.getContainers(enderChest.getContainerSize());
-                int rows = enderChest.getContainerSize() / 9;
-                return new ChestMenu(containers, containerCounter, playerInventory, enderChest, rows);
-            }, new TranslatableComponent("container.enderchest")));
-            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
-            return true;
-        }
-
-        if (!(blockEntity instanceof MenuProvider menuProvider)) {
-            return false;
-        }
-
-        BlockState blockState = level.getBlockState(blockPos);
-        Block block = blockState.getBlock();
-
-        if (block instanceof ChestBlock chestBlock) {
-
-            // boolean flag: do not check if chest is blocked
-            Optional<MenuProvider> menuOptional = chestBlock.combine(blockState, level, blockPos, true).apply(
-                    // Combiner is a copy of private ChestBlock.MENU_PROVIDER_COMBINER
-                    new DoubleBlockCombiner.Combiner<ChestBlockEntity, Optional<MenuProvider>>() {
-                        @Override
-                        public Optional<MenuProvider> acceptDouble(ChestBlockEntity localChest1, ChestBlockEntity localChest2) {
-                            CompoundContainer doubleChest = new CompoundContainer(localChest1, localChest2);
-                            return Optional.of(new ChestBlock.DoubleInventory(localChest1, localChest2, doubleChest));
-                        }
-
-                        @Override
-                        public Optional<MenuProvider> acceptSingle(ChestBlockEntity localChest) {
-                            return Optional.of(localChest);
-                        }
-
-                        @Override
-                        public Optional<MenuProvider> acceptNone() {
-                            return Optional.empty();
-                        }
-                    });
-
-            if (menuOptional.isEmpty()) {
-                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
-                return false;
-            }
-
-            menuProvider = menuOptional.get();
-
-            if (block instanceof TrappedChestBlock) {
-                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
-            } else {
-                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
-            }
-        }
-
-        if (block instanceof ShulkerBoxBlock) {
-            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
-        }
-
-        if (block instanceof BarrelBlock) {
-            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
-        }
-
-        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
-        if (!silentchest || player.gameMode.getGameModeForPlayer() == GameType.SPECTATOR) {
-            player.openMenu(menuProvider);
-            return true;
-        }
-
-        // SilentChest requires access to setting players' game mode directly.
-        if (this.serverPlayerGameModeGameType == null) {
-            return false;
-        }
-
-        if (blockEntity instanceof RandomizableContainerBlockEntity lootable) {
-            if (lootable.lootTable != null) {
-                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
-                return false;
-            }
-        }
-
-        GameType gameType = player.gameMode.getGameModeForPlayer();
-        this.forceGameType(player, GameType.SPECTATOR);
-        player.openMenu(menuProvider);
-        this.forceGameType(player, gameType);
-        return true;
-    }
-
-    @Override
-    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
-        if (this.serverPlayerGameModeGameType == null) {
-            return;
-        }
-
-        InventoryView view = bukkitPlayer.getOpenInventory();
-        switch (view.getType()) {
-            case CHEST:
-            case ENDER_CHEST:
-            case SHULKER_BOX:
-            case BARREL:
-                break;
-            default:
-                return;
-        }
-
-        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
-
-        // Force game mode change without informing plugins or players.
-        // Regular game mode set calls GameModeChangeEvent and is cancellable.
-        GameType gameType = player.gameMode.getGameModeForPlayer();
-        this.forceGameType(player, GameType.SPECTATOR);
-
-        // ServerPlayer#closeContainer cannot be called without entering an
-        // infinite loop because this method is called during inventory close.
-        // From ServerPlayer#closeContainer -> CraftEventFactory#handleInventoryCloseEvent
-        player.containerMenu.transferTo(player.inventoryMenu, player.getBukkitEntity());
-        // From ServerPlayer#closeContainer
-        player.doCloseContainer();
-        // Regular inventory close will handle the rest - packet sending, etc.
-
-        // Revert forced game mode.
-        this.forceGameType(player, gameType);
-    }
-
-    private void forceGameType(final ServerPlayer player, final GameType gameMode) {
-        if (this.serverPlayerGameModeGameType == null) {
-            // No need to warn repeatedly, error on startup and lack of function should be enough.
-            return;
-        }
-        try {
-            this.serverPlayerGameModeGameType.setAccessible(true);
-            this.serverPlayerGameModeGameType.set(player.gameMode, gameMode);
-        } catch (IllegalArgumentException | IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
-}

internal/v1_18_R2/src/main/java/com/lishid/openinv/internal/v1_18_R2/OpenPlayer.java

@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_18_R2;
-
-import java.io.File;
-import net.minecraft.Util;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtIo;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.level.storage.PlayerDataStorage;
-import org.apache.logging.log4j.LogManager;
-import org.bukkit.craftbukkit.v1_18_R2.CraftServer;
-import org.bukkit.craftbukkit.v1_18_R2.entity.CraftPlayer;
-
-public class OpenPlayer extends CraftPlayer {
-
-    public OpenPlayer(CraftServer server, ServerPlayer entity) {
-        super(server, entity);
-    }
-
-    @Override
-    public void loadData() {
-        // See CraftPlayer#loadData
-        CompoundTag loaded = this.server.getHandle().playerIo.load(this.getHandle());
-        if (loaded != null) {
-            readExtraData(loaded);
-        }
-    }
-
-    @Override
-    public void saveData() {
-        ServerPlayer player = this.getHandle();
-        // See net.minecraft.world.level.storage.PlayerDataStorage#save(EntityHuman)
-        try {
-            PlayerDataStorage worldNBTStorage = player.server.getPlayerList().playerIo;
-
-            CompoundTag playerData = player.saveWithoutId(new CompoundTag());
-            setExtraData(playerData);
-
-            if (!isOnline()) {
-                // Special case: save old vehicle data
-                CompoundTag oldData = worldNBTStorage.load(player);
-
-                if (oldData != null && oldData.contains("RootVehicle", 10)) {
-                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
-                    playerData.put("RootVehicle", oldData.getCompound("RootVehicle"));
-                }
-            }
-
-            File file = File.createTempFile(player.getStringUUID() + "-", ".dat", worldNBTStorage.getPlayerDir());
-            NbtIo.writeCompressed(playerData, file);
-            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat");
-            File file2 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat_old");
-            Util.safeReplaceFile(file1, file, file2);
-        } catch (Exception e) {
-            LogManager.getLogger().warn("Failed to save player data for {}: {}", player.getName().getString(), e.getMessage());
-        }
-    }
-
-}

internal/v1_18_R2/src/main/java/com/lishid/openinv/internal/v1_18_R2/SpecialEnderChest.java

@@ -1,339 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_18_R2;
-
-import com.lishid.openinv.internal.ISpecialEnderChest;
-import java.util.List;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
-import net.minecraft.core.NonNullList;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.ContainerHelper;
-import net.minecraft.world.ContainerListener;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.entity.player.StackedContents;
-import net.minecraft.world.inventory.PlayerEnderChestContainer;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
-import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_18_R2.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_18_R2.inventory.CraftInventory;
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.inventory.InventoryHolder;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class SpecialEnderChest extends PlayerEnderChestContainer implements ISpecialEnderChest {
-
-    private final CraftInventory inventory;
-    private ServerPlayer owner;
-    private NonNullList<ItemStack> items;
-    private boolean playerOnline;
-
-    public SpecialEnderChest(final org.bukkit.entity.Player player, final Boolean online) {
-        super(PlayerDataManager.getHandle(player));
-        this.inventory = new CraftInventory(this);
-        this.owner = PlayerDataManager.getHandle(player);
-        this.playerOnline = online;
-        this.items = this.owner.getEnderChestInventory().items;
-    }
-
-    @Override
-    public @NotNull CraftInventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        this.playerOnline = false;
-    }
-
-    @Override
-    public void setPlayerOnline(@NotNull final org.bukkit.entity.Player player) {
-        if (!this.playerOnline) {
-            try {
-                this.owner = PlayerDataManager.getHandle(player);
-                PlayerEnderChestContainer enderChest = owner.getEnderChestInventory();
-                for (int i = 0; i < enderChest.getContainerSize(); ++i) {
-                    enderChest.setItem(i, this.items.get(i));
-                }
-                this.items = enderChest.items;
-                enderChest.transaction.addAll(this.transaction);
-            } catch (Exception ignored) {}
-            this.playerOnline = true;
-        }
-    }
-
-    @Override
-    public @NotNull org.bukkit.entity.Player getPlayer() {
-        return owner.getBukkitEntity();
-    }
-
-    @Override
-    public void setChanged() {
-        this.owner.getEnderChestInventory().setChanged();
-    }
-
-    @Override
-    public List<ItemStack> getContents() {
-        return this.items;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        this.owner.getEnderChestInventory().onOpen(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        this.owner.getEnderChestInventory().onClose(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return this.owner.getEnderChestInventory().getViewers();
-    }
-
-    @Override
-    public boolean stillValid(Player player) {
-        return true;
-    }
-
-    @Override
-    public void setActiveChest(EnderChestBlockEntity enderChest) {
-        this.owner.getEnderChestInventory().setActiveChest(enderChest);
-    }
-
-    @Override
-    public boolean isActiveChest(EnderChestBlockEntity enderChest) {
-        return this.owner.getEnderChestInventory().isActiveChest(enderChest);
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return this.owner.getEnderChestInventory().getMaxStackSize();
-    }
-
-    @Override
-    public void setMaxStackSize(int i) {
-        this.owner.getEnderChestInventory().setMaxStackSize(i);
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.owner.getEnderChestInventory().getOwner();
-    }
-
-    @Override
-    public @Nullable Location getLocation() {
-        return null;
-    }
-
-    @Override
-    public void addListener(ContainerListener listener) {
-        this.owner.getEnderChestInventory().addListener(listener);
-    }
-
-    @Override
-    public void removeListener(ContainerListener listener) {
-        this.owner.getEnderChestInventory().removeListener(listener);
-    }
-
-    @Override
-    public ItemStack getItem(int i) {
-        return i >= 0 && i < this.items.size() ? this.items.get(i) : ItemStack.EMPTY;
-    }
-
-    @Override
-    public ItemStack removeItem(int i, int j) {
-        ItemStack itemstack = ContainerHelper.removeItem(this.items, i, j);
-        if (!itemstack.isEmpty()) {
-            this.setChanged();
-        }
-
-        return itemstack;
-    }
-
-    @Override
-    public ItemStack addItem(ItemStack itemstack) {
-        ItemStack localItem = itemstack.copy();
-        this.moveItemToOccupiedSlotsWithSameType(localItem);
-        if (localItem.isEmpty()) {
-            return ItemStack.EMPTY;
-        } else {
-            this.moveItemToEmptySlots(localItem);
-            return localItem.isEmpty() ? ItemStack.EMPTY : localItem;
-        }
-    }
-
-    @Override
-    public boolean canAddItem(ItemStack itemstack) {
-        for (ItemStack itemstack1 : this.items) {
-            if (itemstack1.isEmpty() || ItemStack.isSameItemSameTags(itemstack1, itemstack) && itemstack1.getCount() < itemstack1.getMaxStackSize()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    private void moveItemToEmptySlots(ItemStack itemstack) {
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            ItemStack localItem = this.getItem(i);
-            if (localItem.isEmpty()) {
-                this.setItem(i, itemstack.copy());
-                itemstack.setCount(0);
-                return;
-            }
-        }
-    }
-
-    private void moveItemToOccupiedSlotsWithSameType(ItemStack itemstack) {
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            ItemStack localItem = this.getItem(i);
-            if (ItemStack.isSameItemSameTags(localItem, itemstack)) {
-                this.moveItemsBetweenStacks(itemstack, localItem);
-                if (itemstack.isEmpty()) {
-                    return;
-                }
-            }
-        }
-    }
-
-    private void moveItemsBetweenStacks(ItemStack itemstack, ItemStack itemstack1) {
-        int i = Math.min(this.getMaxStackSize(), itemstack1.getMaxStackSize());
-        int j = Math.min(itemstack.getCount(), i - itemstack1.getCount());
-        if (j > 0) {
-            itemstack1.grow(j);
-            itemstack.shrink(j);
-            this.setChanged();
-        }
-    }
-
-    @Override
-    public ItemStack removeItemNoUpdate(int i) {
-        ItemStack itemstack = this.items.get(i);
-        if (itemstack.isEmpty()) {
-            return ItemStack.EMPTY;
-        } else {
-            this.items.set(i, ItemStack.EMPTY);
-            return itemstack;
-        }
-    }
-
-    @Override
-    public void setItem(int i, ItemStack itemstack) {
-        this.items.set(i, itemstack);
-        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
-            itemstack.setCount(this.getMaxStackSize());
-        }
-
-        this.setChanged();
-    }
-
-    @Override
-    public int getContainerSize() {
-        return this.owner.getEnderChestInventory().getContainerSize();
-    }
-
-    @Override
-    public boolean isEmpty() {
-        return this.items.stream().allMatch(ItemStack::isEmpty);
-    }
-
-    @Override
-    public void startOpen(Player player) {
-    }
-
-    @Override
-    public void stopOpen(Player player) {
-    }
-
-    @Override
-    public boolean canPlaceItem(int i, ItemStack itemstack) {
-        return true;
-    }
-
-    @Override
-    public void clearContent() {
-        this.items.clear();
-        this.setChanged();
-    }
-
-    @Override
-    public void fillStackedContents(StackedContents stackedContents) {
-        for (ItemStack itemstack : this.items) {
-            stackedContents.accountStack(itemstack);
-        }
-
-    }
-
-    @Override
-    public List<ItemStack> removeAllItems() {
-        List<ItemStack> list = this.items.stream().filter(Predicate.not(ItemStack::isEmpty)).collect(Collectors.toList());
-        this.clearContent();
-        return list;
-    }
-
-    @Override
-    public ItemStack removeItemType(Item item, int i) {
-        ItemStack itemstack = new ItemStack(item, 0);
-
-        for(int j = this.getContainerSize() - 1; j >= 0; --j) {
-            ItemStack localItem = this.getItem(j);
-            if (localItem.getItem().equals(item)) {
-                int k = i - itemstack.getCount();
-                ItemStack splitItem = localItem.split(k);
-                itemstack.grow(splitItem.getCount());
-                if (itemstack.getCount() == i) {
-                    break;
-                }
-            }
-        }
-
-        if (!itemstack.isEmpty()) {
-            this.setChanged();
-        }
-
-        return itemstack;
-    }
-
-    @Override
-    public String toString() {
-        return this.items.stream().filter((itemStack) -> !itemStack.isEmpty()).collect(Collectors.toList()).toString();
-    }
-
-    @Override
-    public void fromTag(ListTag listTag) {
-        for (int i = 0; i < this.getContainerSize(); ++i) {
-            this.setItem(i, ItemStack.EMPTY);
-        }
-
-        for (int i = 0; i < listTag.size(); ++i) {
-            CompoundTag compoundTag = listTag.getCompound(i);
-            int j = compoundTag.getByte("Slot") & 255;
-            if (j < this.getContainerSize()) {
-                this.setItem(j, ItemStack.of(compoundTag));
-            }
-        }
-
-    }
-
-}

internal/v1_18_R2/src/main/java/com/lishid/openinv/internal/v1_18_R2/SpecialPlayerInventory.java

@@ -1,788 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_18_R2;
-
-import com.google.common.collect.ImmutableList;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-import java.util.function.Function;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
-import net.minecraft.CrashReport;
-import net.minecraft.CrashReportCategory;
-import net.minecraft.ReportedException;
-import net.minecraft.core.NonNullList;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.tags.TagKey;
-import net.minecraft.world.Container;
-import net.minecraft.world.ContainerHelper;
-import net.minecraft.world.damagesource.DamageSource;
-import net.minecraft.world.entity.EquipmentSlot;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.entity.player.StackedContents;
-import net.minecraft.world.item.ArmorItem;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.state.BlockState;
-import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_18_R2.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_18_R2.inventory.CraftInventory;
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.inventory.InventoryHolder;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class SpecialPlayerInventory extends Inventory implements ISpecialPlayerInventory {
-
-    private final CraftInventory inventory;
-    private boolean playerOnline;
-    private Player player;
-    private NonNullList<ItemStack> items;
-    private NonNullList<ItemStack> armor;
-    private NonNullList<ItemStack> offhand;
-    private List<NonNullList<ItemStack>> compartments;
-
-    public SpecialPlayerInventory(@NotNull org.bukkit.entity.Player bukkitPlayer, @NotNull Boolean online) {
-        super(PlayerDataManager.getHandle(bukkitPlayer));
-        this.inventory = new CraftInventory(this);
-        this.playerOnline = online;
-        this.player = super.player;
-        this.selected = player.getInventory().selected;
-        this.items = this.player.getInventory().items;
-        this.armor = this.player.getInventory().armor;
-        this.offhand = this.player.getInventory().offhand;
-        this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
-    }
-
-    @Override
-    public void setPlayerOnline(@NotNull org.bukkit.entity.Player player) {
-        if (!this.playerOnline) {
-            Player entityPlayer = PlayerDataManager.getHandle(player);
-            entityPlayer.getInventory().transaction.addAll(this.transaction);
-            this.player = entityPlayer;
-            for (int i = 0; i < getContainerSize(); ++i) {
-                this.player.getInventory().setItem(i, getRawItem(i));
-            }
-            this.player.getInventory().selected = this.selected;
-            this.items = this.player.getInventory().items;
-            this.armor = this.player.getInventory().armor;
-            this.offhand = this.player.getInventory().offhand;
-            this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
-            this.playerOnline = true;
-        }
-    }
-
-    @Override
-    public @NotNull CraftInventory getBukkitInventory() {
-        return this.inventory;
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        this.playerOnline = false;
-    }
-
-    @Override
-    public @NotNull HumanEntity getPlayer() {
-        return this.player.getBukkitEntity();
-    }
-
-    private @NotNull ItemStack getRawItem(int i) {
-        if (i < 0) {
-            return ItemStack.EMPTY;
-        }
-
-        NonNullList<ItemStack> list;
-        for (Iterator<NonNullList<ItemStack>> iterator = this.compartments.iterator(); iterator.hasNext(); i -= list.size()) {
-            list = iterator.next();
-            if (i < list.size()) {
-                return list.get(i);
-            }
-        }
-
-        return ItemStack.EMPTY;
-    }
-
-    private void setRawItem(int i, @NotNull ItemStack itemStack) {
-        if (i < 0) {
-            return;
-        }
-
-        NonNullList<ItemStack> list;
-        for (Iterator<NonNullList<ItemStack>> iterator = this.compartments.iterator(); iterator.hasNext(); i -= list.size()) {
-            list = iterator.next();
-            if (i < list.size()) {
-                list.set(i, itemStack);
-            }
-        }
-    }
-
-    private static record IndexedCompartment(@Nullable NonNullList<ItemStack> compartment, int index) {}
-
-    private @NotNull SpecialPlayerInventory.IndexedCompartment getIndexedContent(int index) {
-        if (index < items.size()) {
-            return new IndexedCompartment(items, getReversedItemSlotNum(index));
-        }
-
-        index -= items.size();
-
-        if (index < armor.size()) {
-            return new IndexedCompartment(armor, getReversedArmorSlotNum(index));
-        }
-
-        index -= armor.size();
-
-        if (index < offhand.size()) {
-            return new IndexedCompartment(offhand, index);
-        }
-
-        index -= offhand.size();
-
-        return new IndexedCompartment(null, index);
-    }
-
-    private int getReversedArmorSlotNum(final int i) {
-        if (i == 0) {
-            return 3;
-        }
-        if (i == 1) {
-            return 2;
-        }
-        if (i == 2) {
-            return 1;
-        }
-        if (i == 3) {
-            return 0;
-        }
-        return i;
-    }
-
-    private int getReversedItemSlotNum(final int i) {
-        if (i >= 27) {
-            return i - 27;
-        }
-        return i + 9;
-    }
-
-    private boolean contains(Predicate<ItemStack> predicate) {
-        return this.compartments.stream().flatMap(NonNullList::stream).anyMatch(predicate);
-    }
-
-    @Override
-    public List<ItemStack> getArmorContents() {
-        return this.armor;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        this.player.getInventory().onOpen(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        this.player.getInventory().onClose(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return this.player.getInventory().getViewers();
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.player.getBukkitEntity();
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return this.player.getInventory().getMaxStackSize();
-    }
-
-    @Override
-    public void setMaxStackSize(int size) {
-        this.player.getInventory().setMaxStackSize(size);
-    }
-
-    @Override
-    public Location getLocation() {
-        return this.player.getBukkitEntity().getLocation();
-    }
-
-    @Override
-    public boolean hasCustomName() {
-        return false;
-    }
-
-    @Override
-    public List<ItemStack> getContents() {
-        return this.compartments.stream().flatMap(Collection::stream).collect(Collectors.toList());
-    }
-
-    @Override
-    public ItemStack getSelected() {
-        return isHotbarSlot(this.selected) ? this.items.get(this.selected) : ItemStack.EMPTY;
-    }
-
-    private boolean hasRemainingSpaceForItem(ItemStack itemstack, ItemStack itemstack1) {
-        return !itemstack.isEmpty() && ItemStack.isSameItemSameTags(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
-    }
-
-    @Override
-    public int canHold(ItemStack itemstack) {
-        int remains = itemstack.getCount();
-
-        for (int i = 0; i < this.items.size(); ++i) {
-            ItemStack itemstack1 = this.getRawItem(i);
-            if (itemstack1.isEmpty()) {
-                return itemstack.getCount();
-            }
-
-            if (this.hasRemainingSpaceForItem(itemstack1, itemstack)) {
-                remains -= (itemstack1.getMaxStackSize() < this.getMaxStackSize() ? itemstack1.getMaxStackSize() : this.getMaxStackSize()) - itemstack1.getCount();
-            }
-
-            if (remains <= 0) {
-                return itemstack.getCount();
-            }
-        }
-
-        ItemStack offhandItemStack = this.getRawItem(this.items.size() + this.armor.size());
-        if (this.hasRemainingSpaceForItem(offhandItemStack, itemstack)) {
-            remains -= (offhandItemStack.getMaxStackSize() < this.getMaxStackSize() ? offhandItemStack.getMaxStackSize() : this.getMaxStackSize()) - offhandItemStack.getCount();
-        }
-
-        return remains <= 0 ? itemstack.getCount() : itemstack.getCount() - remains;
-    }
-
-    @Override
-    public int getFreeSlot() {
-        for(int i = 0; i < this.items.size(); ++i) {
-            if (this.items.get(i).isEmpty()) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public void setPickedItem(ItemStack itemstack) {
-        int i = this.findSlotMatchingItem(itemstack);
-        if (isHotbarSlot(i)) {
-            this.selected = i;
-        } else if (i == -1) {
-            this.selected = this.getSuitableHotbarSlot();
-            if (!this.items.get(this.selected).isEmpty()) {
-                int j = this.getFreeSlot();
-                if (j != -1) {
-                    this.items.set(j, this.items.get(this.selected));
-                }
-            }
-
-            this.items.set(this.selected, itemstack);
-        } else {
-            this.pickSlot(i);
-        }
-
-    }
-
-    @Override
-    public void pickSlot(int i) {
-        this.selected = this.getSuitableHotbarSlot();
-        ItemStack itemstack = this.items.get(this.selected);
-        this.items.set(this.selected, this.items.get(i));
-        this.items.set(i, itemstack);
-    }
-
-    @Override
-    public int findSlotMatchingItem(ItemStack itemstack) {
-        for(int i = 0; i < this.items.size(); ++i) {
-            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemstack, this.items.get(i))) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public int findSlotMatchingUnusedItem(ItemStack itemStack) {
-        for(int i = 0; i < this.items.size(); ++i) {
-            ItemStack localItem = this.items.get(i);
-            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemStack, this.items.get(i)) && !this.items.get(i).isDamaged() && !localItem.isEnchanted() && !localItem.hasCustomHoverName()) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public int getSuitableHotbarSlot() {
-        int i;
-        int j;
-        for(j = 0; j < 9; ++j) {
-            i = (this.selected + j) % 9;
-            if (this.items.get(i).isEmpty()) {
-                return i;
-            }
-        }
-
-        for(j = 0; j < 9; ++j) {
-            i = (this.selected + j) % 9;
-            if (!this.items.get(i).isEnchanted()) {
-                return i;
-            }
-        }
-
-        return this.selected;
-    }
-
-    @Override
-    public void swapPaint(double d0) {
-        if (d0 > 0.0D) {
-            d0 = 1.0D;
-        }
-
-        if (d0 < 0.0D) {
-            d0 = -1.0D;
-        }
-
-        this.selected = (int) (this.selected - d0);
-
-        while (this.selected < 0) {
-            this.selected += 9;
-        }
-
-        while(this.selected >= 9) {
-            this.selected -= 9;
-        }
-    }
-
-    @Override
-    public int clearOrCountMatchingItems(Predicate<ItemStack> predicate, int i, Container container) {
-        byte b0 = 0;
-        boolean flag = i == 0;
-        int j = b0 + ContainerHelper.clearOrCountMatchingItems(this, predicate, i - b0, flag);
-        j += ContainerHelper.clearOrCountMatchingItems(container, predicate, i - j, flag);
-        ItemStack itemstack = this.player.containerMenu.getCarried();
-        j += ContainerHelper.clearOrCountMatchingItems(itemstack, predicate, i - j, flag);
-        if (itemstack.isEmpty()) {
-            this.player.containerMenu.setCarried(ItemStack.EMPTY);
-        }
-
-        return j;
-    }
-
-    private int addResource(ItemStack itemstack) {
-        int i = this.getSlotWithRemainingSpace(itemstack);
-        if (i == -1) {
-            i = this.getFreeSlot();
-        }
-
-        return i == -1 ? itemstack.getCount() : this.addResource(i, itemstack);
-    }
-
-    private int addResource(int i, ItemStack itemstack) {
-        Item item = itemstack.getItem();
-        int j = itemstack.getCount();
-        ItemStack localItemStack = this.getRawItem(i);
-        if (localItemStack.isEmpty()) {
-            localItemStack = new ItemStack(item, 0);
-            if (itemstack.hasTag()) {
-                // hasTag ensures tag not null
-                //noinspection ConstantConditions
-                localItemStack.setTag(itemstack.getTag().copy());
-            }
-
-            this.setRawItem(i, localItemStack);
-        }
-
-        int k = Math.min(j, localItemStack.getMaxStackSize() - localItemStack.getCount());
-
-        if (k > this.getMaxStackSize() - localItemStack.getCount()) {
-            k = this.getMaxStackSize() - localItemStack.getCount();
-        }
-
-        if (k != 0) {
-            j -= k;
-            localItemStack.grow(k);
-            localItemStack.setPopTime(5);
-        }
-
-        return j;
-    }
-
-    @Override
-    public int getSlotWithRemainingSpace(ItemStack itemstack) {
-        if (this.hasRemainingSpaceForItem(this.getRawItem(this.selected), itemstack)) {
-            return this.selected;
-        } else if (this.hasRemainingSpaceForItem(this.getRawItem(40), itemstack)) {
-            return 40;
-        } else {
-            for(int i = 0; i < this.items.size(); ++i) {
-                if (this.hasRemainingSpaceForItem(this.items.get(i), itemstack)) {
-                    return i;
-                }
-            }
-
-            return -1;
-        }
-    }
-
-    @Override
-    public void tick() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                if (!compartment.get(i).isEmpty()) {
-                    compartment.get(i).inventoryTick(this.player.level, this.player, i, this.selected == i);
-                }
-            }
-        }
-
-    }
-
-    @Override
-    public boolean add(ItemStack itemStack) {
-        return this.add(-1, itemStack);
-    }
-
-    @Override
-    public boolean add(int i, ItemStack itemStack) {
-        if (itemStack.isEmpty()) {
-            return false;
-        } else {
-            try {
-                if (itemStack.isDamaged()) {
-                    if (i == -1) {
-                        i = this.getFreeSlot();
-                    }
-
-                    if (i >= 0) {
-                        this.items.set(i, itemStack.copy());
-                        this.items.get(i).setPopTime(5);
-                        itemStack.setCount(0);
-                        return true;
-                    } else if (this.player.getAbilities().instabuild) {
-                        itemStack.setCount(0);
-                        return true;
-                    } else {
-                        return false;
-                    }
-                } else {
-                    int j;
-                    do {
-                        j = itemStack.getCount();
-                        if (i == -1) {
-                            itemStack.setCount(this.addResource(itemStack));
-                        } else {
-                            itemStack.setCount(this.addResource(i, itemStack));
-                        }
-                    } while(!itemStack.isEmpty() && itemStack.getCount() < j);
-
-                    if (itemStack.getCount() == j && this.player.getAbilities().instabuild) {
-                        itemStack.setCount(0);
-                        return true;
-                    } else {
-                        return itemStack.getCount() < j;
-                    }
-                }
-            } catch (Throwable var6) {
-                CrashReport crashReport = CrashReport.forThrowable(var6, "Adding item to inventory");
-                CrashReportCategory crashReportCategory = crashReport.addCategory("Item being added");
-                crashReportCategory.setDetail("Item ID", Item.getId(itemStack.getItem()));
-                crashReportCategory.setDetail("Item data", itemStack.getDamageValue());
-                crashReportCategory.setDetail("Item name", () -> itemStack.getHoverName().getString());
-                throw new ReportedException(crashReport);
-            }
-        }
-    }
-
-    @Override
-    public void placeItemBackInInventory(ItemStack itemStack) {
-        this.placeItemBackInInventory(itemStack, true);
-    }
-
-    @Override
-    public void placeItemBackInInventory(ItemStack itemStack, boolean flag) {
-        while(true) {
-            if (!itemStack.isEmpty()) {
-                int i = this.getSlotWithRemainingSpace(itemStack);
-                if (i == -1) {
-                    i = this.getFreeSlot();
-                }
-
-                if (i != -1) {
-                    int j = itemStack.getMaxStackSize() - this.getRawItem(i).getCount();
-                    if (this.add(i, itemStack.split(j)) && flag && this.player instanceof ServerPlayer) {
-                        ((ServerPlayer)this.player).connection.send(new ClientboundContainerSetSlotPacket(-2, 0, i, this.getRawItem(i)));
-                    }
-                    continue;
-                }
-
-                this.player.drop(itemStack, false);
-            }
-
-            return;
-        }
-    }
-
-    @Override
-    public ItemStack removeItem(int rawIndex, final int j) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null
-                || indexedCompartment.compartment().get(indexedCompartment.index()).isEmpty()) {
-            return ItemStack.EMPTY;
-        }
-
-        return ContainerHelper.removeItem(indexedCompartment.compartment(), indexedCompartment.index(), j);
-    }
-
-    @Override
-    public void removeItem(ItemStack itemStack) {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                if (compartment.get(i) == itemStack) {
-                    compartment.set(i, ItemStack.EMPTY);
-                    break;
-                }
-            }
-        }
-    }
-
-    @Override
-    public ItemStack removeItemNoUpdate(int rawIndex) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            return ItemStack.EMPTY;
-        }
-
-        ItemStack removed = indexedCompartment.compartment().set(indexedCompartment.index(), ItemStack.EMPTY);
-
-        if (removed.isEmpty()) {
-            return ItemStack.EMPTY;
-        }
-
-        return removed;
-    }
-
-    @Override
-    public void setItem(int rawIndex, final ItemStack itemStack) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            this.player.drop(itemStack, true);
-            return;
-        }
-
-        indexedCompartment.compartment().set(indexedCompartment.index(), itemStack);
-    }
-
-    @Override
-    public float getDestroySpeed(BlockState blockState) {
-        return this.items.get(this.selected).getDestroySpeed(blockState);
-    }
-
-    @Override
-    public ListTag save(ListTag listTag) {
-        for (int i = 0; i < this.items.size(); ++i) {
-            if (!this.items.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)i);
-                this.items.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        for (int i = 0; i < this.armor.size(); ++i) {
-            if (!this.armor.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)(i + 100));
-                this.armor.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        for (int i = 0; i < this.offhand.size(); ++i) {
-            if (!this.offhand.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)(i + 150));
-                this.offhand.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        return listTag;
-    }
-
-    @Override
-    public void load(ListTag listTag) {
-        this.items.clear();
-        this.armor.clear();
-        this.offhand.clear();
-
-        for(int i = 0; i < listTag.size(); ++i) {
-            CompoundTag compoundTag = listTag.getCompound(i);
-            int j = compoundTag.getByte("Slot") & 255;
-            ItemStack itemstack = ItemStack.of(compoundTag);
-            if (!itemstack.isEmpty()) {
-                if (j < this.items.size()) {
-                    this.items.set(j, itemstack);
-                } else if (j >= 100 && j < this.armor.size() + 100) {
-                    this.armor.set(j - 100, itemstack);
-                } else if (j >= 150 && j < this.offhand.size() + 150) {
-                    this.offhand.set(j - 150, itemstack);
-                }
-            }
-        }
-
-    }
-
-    @Override
-    public int getContainerSize() {
-        return 45;
-    }
-
-    @Override
-    public boolean isEmpty() {
-        return !contains(itemStack -> !itemStack.isEmpty());
-    }
-
-    @Override
-    public ItemStack getItem(int rawIndex) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            return ItemStack.EMPTY;
-        }
-
-        return indexedCompartment.compartment().get(indexedCompartment.index());
-    }
-
-    @Override
-    public Component getName() {
-        return this.player.getName();
-    }
-
-    @Override
-    public ItemStack getArmor(int index) {
-        return this.armor.get(index);
-    }
-
-    @Override
-    public void hurtArmor(DamageSource damagesource, float damage, int[] armorIndices) {
-        if (damage > 0.0F) {
-            damage /= 4.0F;
-            if (damage < 1.0F) {
-                damage = 1.0F;
-            }
-
-            for (int index : armorIndices) {
-                ItemStack itemstack = this.armor.get(index);
-                if ((!damagesource.isFire() || !itemstack.getItem().isFireResistant()) && itemstack.getItem() instanceof ArmorItem) {
-                    itemstack.hurtAndBreak((int) damage, this.player, localPlayer -> localPlayer.broadcastBreakEvent(EquipmentSlot.byTypeAndIndex(EquipmentSlot.Type.ARMOR, index)));
-                }
-            }
-        }
-    }
-
-    @Override
-    public void dropAll() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                ItemStack itemstack = compartment.get(i);
-                if (!itemstack.isEmpty()) {
-                    this.player.drop(itemstack, true, false);
-                    compartment.set(i, ItemStack.EMPTY);
-                }
-            }
-        }
-    }
-
-    @Override
-    public void setChanged() {
-        super.setChanged();
-    }
-
-    @Override
-    public int getTimesChanged() {
-        return super.getTimesChanged();
-    }
-
-    @Override
-    public boolean stillValid(Player player) {
-        return true;
-    }
-
-    @Override
-    public boolean contains(ItemStack itemstack) {
-        return contains(itemStack -> itemStack.isEmpty() && itemStack.sameItem(itemstack));
-    }
-
-    @Override
-    public boolean contains(TagKey<Item> tagKey) {
-
-        return contains(itemStack -> !itemStack.isEmpty() && itemStack.is(tagKey));
-    }
-
-    @Override
-    public void replaceWith(Inventory inventory) {
-        Function<Integer, ItemStack> getter;
-
-        if (inventory instanceof SpecialPlayerInventory specialPlayerInventory) {
-            getter = specialPlayerInventory::getRawItem;
-        } else {
-            getter = inventory::getItem;
-        }
-
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            this.setRawItem(i, getter.apply(i));
-        }
-
-        this.selected = inventory.selected;
-    }
-
-    @Override
-    public void clearContent() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            compartment.clear();
-        }
-    }
-
-    @Override
-    public void fillStackedContents(StackedContents stackedContents) {
-        for (ItemStack itemstack : this.items) {
-            stackedContents.accountSimpleStack(itemstack);
-        }
-    }
-
-    @Override
-    public ItemStack removeFromSelected(boolean dropWholeStack) {
-        ItemStack itemstack = this.getSelected();
-        return itemstack.isEmpty() ? ItemStack.EMPTY : this.removeItem(this.selected, dropWholeStack ? itemstack.getCount() : 1);
-    }
-
-}

internal/v1_19_R1/src/main/java/com/lishid/openinv/internal/v1_19_R1/AnySilentContainer.java

@@ -1,281 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_19_R1;
-
-import com.lishid.openinv.OpenInv;
-import com.lishid.openinv.internal.IAnySilentContainer;
-import com.lishid.openinv.util.ReflectionHelper;
-import java.lang.reflect.Field;
-import java.util.Optional;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-import net.minecraft.core.BlockPos;
-import net.minecraft.network.chat.Component;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.server.level.ServerPlayerGameMode;
-import net.minecraft.world.CompoundContainer;
-import net.minecraft.world.MenuProvider;
-import net.minecraft.world.SimpleMenuProvider;
-import net.minecraft.world.entity.monster.Shulker;
-import net.minecraft.world.inventory.ChestMenu;
-import net.minecraft.world.inventory.MenuType;
-import net.minecraft.world.inventory.PlayerEnderChestContainer;
-import net.minecraft.world.level.GameType;
-import net.minecraft.world.level.block.BarrelBlock;
-import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.ChestBlock;
-import net.minecraft.world.level.block.DoubleBlockCombiner;
-import net.minecraft.world.level.block.ShulkerBoxBlock;
-import net.minecraft.world.level.block.TrappedChestBlock;
-import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.entity.ChestBlockEntity;
-import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
-import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
-import net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.phys.AABB;
-import org.bukkit.Bukkit;
-import org.bukkit.Material;
-import org.bukkit.Statistic;
-import org.bukkit.block.ShulkerBox;
-import org.bukkit.craftbukkit.v1_19_R1.CraftWorld;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.InventoryView;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class AnySilentContainer implements IAnySilentContainer {
-
-    private @Nullable Field serverPlayerGameModeGameType;
-
-    public AnySilentContainer() {
-        try {
-            try {
-                // IDE warns about field not existing, but SpecialSource does not remap strings used in reflection.
-                // The warning is not suppressed as a reminder that it must manually be checked on updates.
-                this.serverPlayerGameModeGameType = ServerPlayerGameMode.class.getDeclaredField("b");
-                this.serverPlayerGameModeGameType.setAccessible(true);
-            } catch (NoSuchFieldException e) {
-                Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
-                logger.warning("ServerPlayerGameMode#gameModeForPlayer's obfuscated name has changed!");
-                logger.warning("Please report this at https://github.com/Jikoo/OpenInv/issues");
-                logger.warning("Attempting to fall through using reflection. Please verify that SilentContainer does not fail.");
-                // N.B. gameModeForPlayer is (for now) declared before previousGameModeForPlayer so silent shouldn't break.
-                this.serverPlayerGameModeGameType = ReflectionHelper.grabFieldByType(ServerPlayerGameMode.class, GameType.class);
-            }
-        } catch (SecurityException e) {
-            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
-            logger.warning("Unable to directly write player game mode! SilentContainer will fail.");
-            logger.log(Level.WARNING, "Error obtaining GameType field", e);
-        }
-    }
-
-    @Override
-    public boolean isShulkerBlocked(@NotNull ShulkerBox shulkerBox) {
-        org.bukkit.World bukkitWorld = shulkerBox.getWorld();
-        if (!(bukkitWorld instanceof CraftWorld)) {
-            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
-        }
-
-        if (!(bukkitWorld instanceof CraftWorld craftWorld)) {
-            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
-            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
-            return false;
-        }
-
-        final ServerLevel world = craftWorld.getHandle();
-        final BlockPos blockPosition = new BlockPos(shulkerBox.getX(), shulkerBox.getY(), shulkerBox.getZ());
-        final BlockEntity tile = world.getBlockEntity(blockPosition);
-
-        if (!(tile instanceof ShulkerBoxBlockEntity shulkerBoxBlockEntity)
-                || shulkerBoxBlockEntity.getAnimationStatus() != ShulkerBoxBlockEntity.AnimationStatus.CLOSED) {
-            return false;
-        }
-
-        BlockState blockState = world.getBlockState(blockPosition);
-
-        // See net.minecraft.world.level.block.ShulkerBoxBlock#canOpen
-        AABB boundingBox = Shulker.getProgressDeltaAabb(blockState.getValue(ShulkerBoxBlock.FACING), 0.0F, 0.5F)
-                .move(blockPosition)
-                .deflate(1.0E-6D);
-        return !world.noCollision(boundingBox);
-    }
-
-    @Override
-    public boolean activateContainer(
-            @NotNull final Player bukkitPlayer,
-            final boolean silentchest,
-            @NotNull final org.bukkit.block.Block bukkitBlock) {
-
-        // Silent ender chest is API-only
-        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
-            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
-            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
-            return true;
-        }
-
-        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
-
-        final ServerLevel level = player.getLevel();
-        final BlockPos blockPos = new BlockPos(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
-        final BlockEntity blockEntity = level.getBlockEntity(blockPos);
-
-        if (blockEntity == null) {
-            return false;
-        }
-
-        if (blockEntity instanceof EnderChestBlockEntity enderChestTile) {
-            // Anychest ender chest. See net.minecraft.world.level.block.EnderChestBlock
-            PlayerEnderChestContainer enderChest = player.getEnderChestInventory();
-            enderChest.setActiveChest(enderChestTile);
-            player.openMenu(new SimpleMenuProvider((containerCounter, playerInventory, ignored) -> {
-                MenuType<?> containers = PlayerDataManager.getContainers(enderChest.getContainerSize());
-                int rows = enderChest.getContainerSize() / 9;
-                return new ChestMenu(containers, containerCounter, playerInventory, enderChest, rows);
-            }, Component.translatable(("container.enderchest"))));
-            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
-            return true;
-        }
-
-        if (!(blockEntity instanceof MenuProvider menuProvider)) {
-            return false;
-        }
-
-        BlockState blockState = level.getBlockState(blockPos);
-        Block block = blockState.getBlock();
-
-        if (block instanceof ChestBlock chestBlock) {
-
-            // boolean flag: do not check if chest is blocked
-            Optional<MenuProvider> menuOptional = chestBlock.combine(blockState, level, blockPos, true).apply(
-                    // Combiner is a copy of private ChestBlock.MENU_PROVIDER_COMBINER
-                    new DoubleBlockCombiner.Combiner<ChestBlockEntity, Optional<MenuProvider>>() {
-                        @Override
-                        public Optional<MenuProvider> acceptDouble(ChestBlockEntity localChest1, ChestBlockEntity localChest2) {
-                            CompoundContainer doubleChest = new CompoundContainer(localChest1, localChest2);
-                            return Optional.of(new ChestBlock.DoubleInventory(localChest1, localChest2, doubleChest));
-                        }
-
-                        @Override
-                        public Optional<MenuProvider> acceptSingle(ChestBlockEntity localChest) {
-                            return Optional.of(localChest);
-                        }
-
-                        @Override
-                        public Optional<MenuProvider> acceptNone() {
-                            return Optional.empty();
-                        }
-                    });
-
-            if (menuOptional.isEmpty()) {
-                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
-                return false;
-            }
-
-            menuProvider = menuOptional.get();
-
-            if (block instanceof TrappedChestBlock) {
-                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
-            } else {
-                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
-            }
-        }
-
-        if (block instanceof ShulkerBoxBlock) {
-            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
-        }
-
-        if (block instanceof BarrelBlock) {
-            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
-        }
-
-        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
-        if (!silentchest || player.gameMode.getGameModeForPlayer() == GameType.SPECTATOR) {
-            player.openMenu(menuProvider);
-            return true;
-        }
-
-        // SilentChest requires access to setting players' game mode directly.
-        if (this.serverPlayerGameModeGameType == null) {
-            return false;
-        }
-
-        if (blockEntity instanceof RandomizableContainerBlockEntity lootable) {
-            if (lootable.lootTable != null) {
-                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
-                return false;
-            }
-        }
-
-        GameType gameType = player.gameMode.getGameModeForPlayer();
-        this.forceGameType(player, GameType.SPECTATOR);
-        player.openMenu(menuProvider);
-        this.forceGameType(player, gameType);
-        return true;
-    }
-
-    @Override
-    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
-        if (this.serverPlayerGameModeGameType == null) {
-            return;
-        }
-
-        InventoryView view = bukkitPlayer.getOpenInventory();
-        switch (view.getType()) {
-            case CHEST:
-            case ENDER_CHEST:
-            case SHULKER_BOX:
-            case BARREL:
-                break;
-            default:
-                return;
-        }
-
-        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
-
-        // Force game mode change without informing plugins or players.
-        // Regular game mode set calls GameModeChangeEvent and is cancellable.
-        GameType gameType = player.gameMode.getGameModeForPlayer();
-        this.forceGameType(player, GameType.SPECTATOR);
-
-        // ServerPlayer#closeContainer cannot be called without entering an
-        // infinite loop because this method is called during inventory close.
-        // From ServerPlayer#closeContainer -> CraftEventFactory#handleInventoryCloseEvent
-        player.containerMenu.transferTo(player.inventoryMenu, player.getBukkitEntity());
-        // From ServerPlayer#closeContainer
-        player.doCloseContainer();
-        // Regular inventory close will handle the rest - packet sending, etc.
-
-        // Revert forced game mode.
-        this.forceGameType(player, gameType);
-    }
-
-    private void forceGameType(final ServerPlayer player, final GameType gameMode) {
-        if (this.serverPlayerGameModeGameType == null) {
-            // No need to warn repeatedly, error on startup and lack of function should be enough.
-            return;
-        }
-        try {
-            this.serverPlayerGameModeGameType.setAccessible(true);
-            this.serverPlayerGameModeGameType.set(player.gameMode, gameMode);
-        } catch (IllegalArgumentException | IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
-}

internal/v1_19_R1/src/main/java/com/lishid/openinv/internal/v1_19_R1/OpenPlayer.java

@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_19_R1;
-
-import java.io.File;
-import net.minecraft.Util;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtIo;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.level.storage.PlayerDataStorage;
-import org.apache.logging.log4j.LogManager;
-import org.bukkit.craftbukkit.v1_19_R1.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R1.entity.CraftPlayer;
-
-public class OpenPlayer extends CraftPlayer {
-
-    public OpenPlayer(CraftServer server, ServerPlayer entity) {
-        super(server, entity);
-    }
-
-    @Override
-    public void loadData() {
-        // See CraftPlayer#loadData
-        CompoundTag loaded = this.server.getHandle().playerIo.load(this.getHandle());
-        if (loaded != null) {
-            readExtraData(loaded);
-        }
-    }
-
-    @Override
-    public void saveData() {
-        ServerPlayer player = this.getHandle();
-        // See net.minecraft.world.level.storage.PlayerDataStorage#save(EntityHuman)
-        try {
-            PlayerDataStorage worldNBTStorage = player.server.getPlayerList().playerIo;
-
-            CompoundTag playerData = player.saveWithoutId(new CompoundTag());
-            setExtraData(playerData);
-
-            if (!isOnline()) {
-                // Special case: save old vehicle data
-                CompoundTag oldData = worldNBTStorage.load(player);
-
-                if (oldData != null && oldData.contains("RootVehicle", 10)) {
-                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
-                    playerData.put("RootVehicle", oldData.getCompound("RootVehicle"));
-                }
-            }
-
-            File file = File.createTempFile(player.getStringUUID() + "-", ".dat", worldNBTStorage.getPlayerDir());
-            NbtIo.writeCompressed(playerData, file);
-            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat");
-            File file2 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat_old");
-            Util.safeReplaceFile(file1, file, file2);
-        } catch (Exception e) {
-            LogManager.getLogger().warn("Failed to save player data for {}: {}", player.getName().getString(), e.getMessage());
-        }
-    }
-
-}

internal/v1_19_R1/src/main/java/com/lishid/openinv/internal/v1_19_R1/SpecialEnderChest.java

@@ -1,339 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_19_R1;
-
-import com.lishid.openinv.internal.ISpecialEnderChest;
-import java.util.List;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
-import net.minecraft.core.NonNullList;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.world.ContainerHelper;
-import net.minecraft.world.ContainerListener;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.entity.player.StackedContents;
-import net.minecraft.world.inventory.PlayerEnderChestContainer;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
-import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_19_R1.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftInventory;
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.inventory.InventoryHolder;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class SpecialEnderChest extends PlayerEnderChestContainer implements ISpecialEnderChest {
-
-    private final CraftInventory inventory;
-    private ServerPlayer owner;
-    private NonNullList<ItemStack> items;
-    private boolean playerOnline;
-
-    public SpecialEnderChest(final org.bukkit.entity.Player player, final Boolean online) {
-        super(PlayerDataManager.getHandle(player));
-        this.inventory = new CraftInventory(this);
-        this.owner = PlayerDataManager.getHandle(player);
-        this.playerOnline = online;
-        this.items = this.owner.getEnderChestInventory().items;
-    }
-
-    @Override
-    public @NotNull CraftInventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        this.playerOnline = false;
-    }
-
-    @Override
-    public void setPlayerOnline(@NotNull final org.bukkit.entity.Player player) {
-        if (!this.playerOnline) {
-            try {
-                this.owner = PlayerDataManager.getHandle(player);
-                PlayerEnderChestContainer enderChest = owner.getEnderChestInventory();
-                for (int i = 0; i < enderChest.getContainerSize(); ++i) {
-                    enderChest.setItem(i, this.items.get(i));
-                }
-                this.items = enderChest.items;
-                enderChest.transaction.addAll(this.transaction);
-            } catch (Exception ignored) {}
-            this.playerOnline = true;
-        }
-    }
-
-    @Override
-    public @NotNull org.bukkit.entity.Player getPlayer() {
-        return owner.getBukkitEntity();
-    }
-
-    @Override
-    public void setChanged() {
-        this.owner.getEnderChestInventory().setChanged();
-    }
-
-    @Override
-    public List<ItemStack> getContents() {
-        return this.items;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        this.owner.getEnderChestInventory().onOpen(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        this.owner.getEnderChestInventory().onClose(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return this.owner.getEnderChestInventory().getViewers();
-    }
-
-    @Override
-    public boolean stillValid(Player player) {
-        return true;
-    }
-
-    @Override
-    public void setActiveChest(EnderChestBlockEntity enderChest) {
-        this.owner.getEnderChestInventory().setActiveChest(enderChest);
-    }
-
-    @Override
-    public boolean isActiveChest(EnderChestBlockEntity enderChest) {
-        return this.owner.getEnderChestInventory().isActiveChest(enderChest);
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return this.owner.getEnderChestInventory().getMaxStackSize();
-    }
-
-    @Override
-    public void setMaxStackSize(int i) {
-        this.owner.getEnderChestInventory().setMaxStackSize(i);
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.owner.getEnderChestInventory().getOwner();
-    }
-
-    @Override
-    public @Nullable Location getLocation() {
-        return null;
-    }
-
-    @Override
-    public void addListener(ContainerListener listener) {
-        this.owner.getEnderChestInventory().addListener(listener);
-    }
-
-    @Override
-    public void removeListener(ContainerListener listener) {
-        this.owner.getEnderChestInventory().removeListener(listener);
-    }
-
-    @Override
-    public ItemStack getItem(int i) {
-        return i >= 0 && i < this.items.size() ? this.items.get(i) : ItemStack.EMPTY;
-    }
-
-    @Override
-    public ItemStack removeItem(int i, int j) {
-        ItemStack itemstack = ContainerHelper.removeItem(this.items, i, j);
-        if (!itemstack.isEmpty()) {
-            this.setChanged();
-        }
-
-        return itemstack;
-    }
-
-    @Override
-    public ItemStack addItem(ItemStack itemstack) {
-        ItemStack localItem = itemstack.copy();
-        this.moveItemToOccupiedSlotsWithSameType(localItem);
-        if (localItem.isEmpty()) {
-            return ItemStack.EMPTY;
-        } else {
-            this.moveItemToEmptySlots(localItem);
-            return localItem.isEmpty() ? ItemStack.EMPTY : localItem;
-        }
-    }
-
-    @Override
-    public boolean canAddItem(ItemStack itemstack) {
-        for (ItemStack itemstack1 : this.items) {
-            if (itemstack1.isEmpty() || ItemStack.isSameItemSameTags(itemstack1, itemstack) && itemstack1.getCount() < itemstack1.getMaxStackSize()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    private void moveItemToEmptySlots(ItemStack itemstack) {
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            ItemStack localItem = this.getItem(i);
-            if (localItem.isEmpty()) {
-                this.setItem(i, itemstack.copy());
-                itemstack.setCount(0);
-                return;
-            }
-        }
-    }
-
-    private void moveItemToOccupiedSlotsWithSameType(ItemStack itemstack) {
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            ItemStack localItem = this.getItem(i);
-            if (ItemStack.isSameItemSameTags(localItem, itemstack)) {
-                this.moveItemsBetweenStacks(itemstack, localItem);
-                if (itemstack.isEmpty()) {
-                    return;
-                }
-            }
-        }
-    }
-
-    private void moveItemsBetweenStacks(ItemStack itemstack, ItemStack itemstack1) {
-        int i = Math.min(this.getMaxStackSize(), itemstack1.getMaxStackSize());
-        int j = Math.min(itemstack.getCount(), i - itemstack1.getCount());
-        if (j > 0) {
-            itemstack1.grow(j);
-            itemstack.shrink(j);
-            this.setChanged();
-        }
-    }
-
-    @Override
-    public ItemStack removeItemNoUpdate(int i) {
-        ItemStack itemstack = this.items.get(i);
-        if (itemstack.isEmpty()) {
-            return ItemStack.EMPTY;
-        } else {
-            this.items.set(i, ItemStack.EMPTY);
-            return itemstack;
-        }
-    }
-
-    @Override
-    public void setItem(int i, ItemStack itemstack) {
-        this.items.set(i, itemstack);
-        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
-            itemstack.setCount(this.getMaxStackSize());
-        }
-
-        this.setChanged();
-    }
-
-    @Override
-    public int getContainerSize() {
-        return this.owner.getEnderChestInventory().getContainerSize();
-    }
-
-    @Override
-    public boolean isEmpty() {
-        return this.items.stream().allMatch(ItemStack::isEmpty);
-    }
-
-    @Override
-    public void startOpen(Player player) {
-    }
-
-    @Override
-    public void stopOpen(Player player) {
-    }
-
-    @Override
-    public boolean canPlaceItem(int i, ItemStack itemstack) {
-        return true;
-    }
-
-    @Override
-    public void clearContent() {
-        this.items.clear();
-        this.setChanged();
-    }
-
-    @Override
-    public void fillStackedContents(StackedContents stackedContents) {
-        for (ItemStack itemstack : this.items) {
-            stackedContents.accountStack(itemstack);
-        }
-
-    }
-
-    @Override
-    public List<ItemStack> removeAllItems() {
-        List<ItemStack> list = this.items.stream().filter(Predicate.not(ItemStack::isEmpty)).collect(Collectors.toList());
-        this.clearContent();
-        return list;
-    }
-
-    @Override
-    public ItemStack removeItemType(Item item, int i) {
-        ItemStack itemstack = new ItemStack(item, 0);
-
-        for(int j = this.getContainerSize() - 1; j >= 0; --j) {
-            ItemStack localItem = this.getItem(j);
-            if (localItem.getItem().equals(item)) {
-                int k = i - itemstack.getCount();
-                ItemStack splitItem = localItem.split(k);
-                itemstack.grow(splitItem.getCount());
-                if (itemstack.getCount() == i) {
-                    break;
-                }
-            }
-        }
-
-        if (!itemstack.isEmpty()) {
-            this.setChanged();
-        }
-
-        return itemstack;
-    }
-
-    @Override
-    public String toString() {
-        return this.items.stream().filter((itemStack) -> !itemStack.isEmpty()).toList().toString();
-    }
-
-    @Override
-    public void fromTag(ListTag listTag) {
-        for (int i = 0; i < this.getContainerSize(); ++i) {
-            this.setItem(i, ItemStack.EMPTY);
-        }
-
-        for (int i = 0; i < listTag.size(); ++i) {
-            CompoundTag compoundTag = listTag.getCompound(i);
-            int j = compoundTag.getByte("Slot") & 255;
-            if (j < this.getContainerSize()) {
-                this.setItem(j, ItemStack.of(compoundTag));
-            }
-        }
-
-    }
-
-}

internal/v1_19_R1/src/main/java/com/lishid/openinv/internal/v1_19_R1/SpecialPlayerInventory.java

@@ -1,788 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_19_R1;
-
-import com.google.common.collect.ImmutableList;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-import java.util.function.Function;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
-import net.minecraft.CrashReport;
-import net.minecraft.CrashReportCategory;
-import net.minecraft.ReportedException;
-import net.minecraft.core.NonNullList;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.ListTag;
-import net.minecraft.network.chat.Component;
-import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.tags.TagKey;
-import net.minecraft.world.Container;
-import net.minecraft.world.ContainerHelper;
-import net.minecraft.world.damagesource.DamageSource;
-import net.minecraft.world.entity.EquipmentSlot;
-import net.minecraft.world.entity.player.Inventory;
-import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.entity.player.StackedContents;
-import net.minecraft.world.item.ArmorItem;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.level.block.state.BlockState;
-import org.bukkit.Location;
-import org.bukkit.craftbukkit.v1_19_R1.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftInventory;
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.inventory.InventoryHolder;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-public class SpecialPlayerInventory extends Inventory implements ISpecialPlayerInventory {
-
-    private final CraftInventory inventory;
-    private boolean playerOnline;
-    private Player player;
-    private NonNullList<ItemStack> items;
-    private NonNullList<ItemStack> armor;
-    private NonNullList<ItemStack> offhand;
-    private List<NonNullList<ItemStack>> compartments;
-
-    public SpecialPlayerInventory(@NotNull org.bukkit.entity.Player bukkitPlayer, @NotNull Boolean online) {
-        super(PlayerDataManager.getHandle(bukkitPlayer));
-        this.inventory = new CraftInventory(this);
-        this.playerOnline = online;
-        this.player = super.player;
-        this.selected = player.getInventory().selected;
-        this.items = this.player.getInventory().items;
-        this.armor = this.player.getInventory().armor;
-        this.offhand = this.player.getInventory().offhand;
-        this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
-    }
-
-    @Override
-    public void setPlayerOnline(@NotNull org.bukkit.entity.Player player) {
-        if (!this.playerOnline) {
-            Player entityPlayer = PlayerDataManager.getHandle(player);
-            entityPlayer.getInventory().transaction.addAll(this.transaction);
-            this.player = entityPlayer;
-            for (int i = 0; i < getContainerSize(); ++i) {
-                this.player.getInventory().setItem(i, getRawItem(i));
-            }
-            this.player.getInventory().selected = this.selected;
-            this.items = this.player.getInventory().items;
-            this.armor = this.player.getInventory().armor;
-            this.offhand = this.player.getInventory().offhand;
-            this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
-            this.playerOnline = true;
-        }
-    }
-
-    @Override
-    public @NotNull CraftInventory getBukkitInventory() {
-        return this.inventory;
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        this.playerOnline = false;
-    }
-
-    @Override
-    public @NotNull HumanEntity getPlayer() {
-        return this.player.getBukkitEntity();
-    }
-
-    private @NotNull ItemStack getRawItem(int i) {
-        if (i < 0) {
-            return ItemStack.EMPTY;
-        }
-
-        NonNullList<ItemStack> list;
-        for (Iterator<NonNullList<ItemStack>> iterator = this.compartments.iterator(); iterator.hasNext(); i -= list.size()) {
-            list = iterator.next();
-            if (i < list.size()) {
-                return list.get(i);
-            }
-        }
-
-        return ItemStack.EMPTY;
-    }
-
-    private void setRawItem(int i, @NotNull ItemStack itemStack) {
-        if (i < 0) {
-            return;
-        }
-
-        NonNullList<ItemStack> list;
-        for (Iterator<NonNullList<ItemStack>> iterator = this.compartments.iterator(); iterator.hasNext(); i -= list.size()) {
-            list = iterator.next();
-            if (i < list.size()) {
-                list.set(i, itemStack);
-            }
-        }
-    }
-
-    private record IndexedCompartment(@Nullable NonNullList<ItemStack> compartment, int index) {}
-
-    private @NotNull SpecialPlayerInventory.IndexedCompartment getIndexedContent(int index) {
-        if (index < items.size()) {
-            return new IndexedCompartment(items, getReversedItemSlotNum(index));
-        }
-
-        index -= items.size();
-
-        if (index < armor.size()) {
-            return new IndexedCompartment(armor, getReversedArmorSlotNum(index));
-        }
-
-        index -= armor.size();
-
-        if (index < offhand.size()) {
-            return new IndexedCompartment(offhand, index);
-        }
-
-        index -= offhand.size();
-
-        return new IndexedCompartment(null, index);
-    }
-
-    private int getReversedArmorSlotNum(final int i) {
-        if (i == 0) {
-            return 3;
-        }
-        if (i == 1) {
-            return 2;
-        }
-        if (i == 2) {
-            return 1;
-        }
-        if (i == 3) {
-            return 0;
-        }
-        return i;
-    }
-
-    private int getReversedItemSlotNum(final int i) {
-        if (i >= 27) {
-            return i - 27;
-        }
-        return i + 9;
-    }
-
-    private boolean contains(Predicate<ItemStack> predicate) {
-        return this.compartments.stream().flatMap(NonNullList::stream).anyMatch(predicate);
-    }
-
-    @Override
-    public List<ItemStack> getArmorContents() {
-        return this.armor;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        this.player.getInventory().onOpen(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        this.player.getInventory().onClose(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return this.player.getInventory().getViewers();
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.player.getBukkitEntity();
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return this.player.getInventory().getMaxStackSize();
-    }
-
-    @Override
-    public void setMaxStackSize(int size) {
-        this.player.getInventory().setMaxStackSize(size);
-    }
-
-    @Override
-    public Location getLocation() {
-        return this.player.getBukkitEntity().getLocation();
-    }
-
-    @Override
-    public boolean hasCustomName() {
-        return false;
-    }
-
-    @Override
-    public List<ItemStack> getContents() {
-        return this.compartments.stream().flatMap(Collection::stream).collect(Collectors.toList());
-    }
-
-    @Override
-    public ItemStack getSelected() {
-        return isHotbarSlot(this.selected) ? this.items.get(this.selected) : ItemStack.EMPTY;
-    }
-
-    private boolean hasRemainingSpaceForItem(ItemStack itemstack, ItemStack itemstack1) {
-        return !itemstack.isEmpty() && ItemStack.isSameItemSameTags(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
-    }
-
-    @Override
-    public int canHold(ItemStack itemstack) {
-        int remains = itemstack.getCount();
-
-        for (int i = 0; i < this.items.size(); ++i) {
-            ItemStack itemstack1 = this.getRawItem(i);
-            if (itemstack1.isEmpty()) {
-                return itemstack.getCount();
-            }
-
-            if (this.hasRemainingSpaceForItem(itemstack1, itemstack)) {
-                remains -= (itemstack1.getMaxStackSize() < this.getMaxStackSize() ? itemstack1.getMaxStackSize() : this.getMaxStackSize()) - itemstack1.getCount();
-            }
-
-            if (remains <= 0) {
-                return itemstack.getCount();
-            }
-        }
-
-        ItemStack offhandItemStack = this.getRawItem(this.items.size() + this.armor.size());
-        if (this.hasRemainingSpaceForItem(offhandItemStack, itemstack)) {
-            remains -= (offhandItemStack.getMaxStackSize() < this.getMaxStackSize() ? offhandItemStack.getMaxStackSize() : this.getMaxStackSize()) - offhandItemStack.getCount();
-        }
-
-        return remains <= 0 ? itemstack.getCount() : itemstack.getCount() - remains;
-    }
-
-    @Override
-    public int getFreeSlot() {
-        for(int i = 0; i < this.items.size(); ++i) {
-            if (this.items.get(i).isEmpty()) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public void setPickedItem(ItemStack itemstack) {
-        int i = this.findSlotMatchingItem(itemstack);
-        if (isHotbarSlot(i)) {
-            this.selected = i;
-        } else if (i == -1) {
-            this.selected = this.getSuitableHotbarSlot();
-            if (!this.items.get(this.selected).isEmpty()) {
-                int j = this.getFreeSlot();
-                if (j != -1) {
-                    this.items.set(j, this.items.get(this.selected));
-                }
-            }
-
-            this.items.set(this.selected, itemstack);
-        } else {
-            this.pickSlot(i);
-        }
-
-    }
-
-    @Override
-    public void pickSlot(int i) {
-        this.selected = this.getSuitableHotbarSlot();
-        ItemStack itemstack = this.items.get(this.selected);
-        this.items.set(this.selected, this.items.get(i));
-        this.items.set(i, itemstack);
-    }
-
-    @Override
-    public int findSlotMatchingItem(ItemStack itemstack) {
-        for(int i = 0; i < this.items.size(); ++i) {
-            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemstack, this.items.get(i))) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public int findSlotMatchingUnusedItem(ItemStack itemStack) {
-        for(int i = 0; i < this.items.size(); ++i) {
-            ItemStack localItem = this.items.get(i);
-            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemStack, this.items.get(i)) && !this.items.get(i).isDamaged() && !localItem.isEnchanted() && !localItem.hasCustomHoverName()) {
-                return i;
-            }
-        }
-
-        return -1;
-    }
-
-    @Override
-    public int getSuitableHotbarSlot() {
-        int i;
-        int j;
-        for(j = 0; j < 9; ++j) {
-            i = (this.selected + j) % 9;
-            if (this.items.get(i).isEmpty()) {
-                return i;
-            }
-        }
-
-        for(j = 0; j < 9; ++j) {
-            i = (this.selected + j) % 9;
-            if (!this.items.get(i).isEnchanted()) {
-                return i;
-            }
-        }
-
-        return this.selected;
-    }
-
-    @Override
-    public void swapPaint(double d0) {
-        if (d0 > 0.0D) {
-            d0 = 1.0D;
-        }
-
-        if (d0 < 0.0D) {
-            d0 = -1.0D;
-        }
-
-        this.selected = (int) (this.selected - d0);
-
-        while (this.selected < 0) {
-            this.selected += 9;
-        }
-
-        while(this.selected >= 9) {
-            this.selected -= 9;
-        }
-    }
-
-    @Override
-    public int clearOrCountMatchingItems(Predicate<ItemStack> predicate, int i, Container container) {
-        byte b0 = 0;
-        boolean flag = i == 0;
-        int j = b0 + ContainerHelper.clearOrCountMatchingItems(this, predicate, i - b0, flag);
-        j += ContainerHelper.clearOrCountMatchingItems(container, predicate, i - j, flag);
-        ItemStack itemstack = this.player.containerMenu.getCarried();
-        j += ContainerHelper.clearOrCountMatchingItems(itemstack, predicate, i - j, flag);
-        if (itemstack.isEmpty()) {
-            this.player.containerMenu.setCarried(ItemStack.EMPTY);
-        }
-
-        return j;
-    }
-
-    private int addResource(ItemStack itemstack) {
-        int i = this.getSlotWithRemainingSpace(itemstack);
-        if (i == -1) {
-            i = this.getFreeSlot();
-        }
-
-        return i == -1 ? itemstack.getCount() : this.addResource(i, itemstack);
-    }
-
-    private int addResource(int i, ItemStack itemstack) {
-        Item item = itemstack.getItem();
-        int j = itemstack.getCount();
-        ItemStack localItemStack = this.getRawItem(i);
-        if (localItemStack.isEmpty()) {
-            localItemStack = new ItemStack(item, 0);
-            if (itemstack.hasTag()) {
-                // hasTag ensures tag not null
-                //noinspection ConstantConditions
-                localItemStack.setTag(itemstack.getTag().copy());
-            }
-
-            this.setRawItem(i, localItemStack);
-        }
-
-        int k = Math.min(j, localItemStack.getMaxStackSize() - localItemStack.getCount());
-
-        if (k > this.getMaxStackSize() - localItemStack.getCount()) {
-            k = this.getMaxStackSize() - localItemStack.getCount();
-        }
-
-        if (k != 0) {
-            j -= k;
-            localItemStack.grow(k);
-            localItemStack.setPopTime(5);
-        }
-
-        return j;
-    }
-
-    @Override
-    public int getSlotWithRemainingSpace(ItemStack itemstack) {
-        if (this.hasRemainingSpaceForItem(this.getRawItem(this.selected), itemstack)) {
-            return this.selected;
-        } else if (this.hasRemainingSpaceForItem(this.getRawItem(40), itemstack)) {
-            return 40;
-        } else {
-            for(int i = 0; i < this.items.size(); ++i) {
-                if (this.hasRemainingSpaceForItem(this.items.get(i), itemstack)) {
-                    return i;
-                }
-            }
-
-            return -1;
-        }
-    }
-
-    @Override
-    public void tick() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                if (!compartment.get(i).isEmpty()) {
-                    compartment.get(i).inventoryTick(this.player.level, this.player, i, this.selected == i);
-                }
-            }
-        }
-
-    }
-
-    @Override
-    public boolean add(ItemStack itemStack) {
-        return this.add(-1, itemStack);
-    }
-
-    @Override
-    public boolean add(int i, ItemStack itemStack) {
-        if (itemStack.isEmpty()) {
-            return false;
-        } else {
-            try {
-                if (itemStack.isDamaged()) {
-                    if (i == -1) {
-                        i = this.getFreeSlot();
-                    }
-
-                    if (i >= 0) {
-                        this.items.set(i, itemStack.copy());
-                        this.items.get(i).setPopTime(5);
-                        itemStack.setCount(0);
-                        return true;
-                    } else if (this.player.getAbilities().instabuild) {
-                        itemStack.setCount(0);
-                        return true;
-                    } else {
-                        return false;
-                    }
-                } else {
-                    int j;
-                    do {
-                        j = itemStack.getCount();
-                        if (i == -1) {
-                            itemStack.setCount(this.addResource(itemStack));
-                        } else {
-                            itemStack.setCount(this.addResource(i, itemStack));
-                        }
-                    } while(!itemStack.isEmpty() && itemStack.getCount() < j);
-
-                    if (itemStack.getCount() == j && this.player.getAbilities().instabuild) {
-                        itemStack.setCount(0);
-                        return true;
-                    } else {
-                        return itemStack.getCount() < j;
-                    }
-                }
-            } catch (Throwable var6) {
-                CrashReport crashReport = CrashReport.forThrowable(var6, "Adding item to inventory");
-                CrashReportCategory crashReportCategory = crashReport.addCategory("Item being added");
-                crashReportCategory.setDetail("Item ID", Item.getId(itemStack.getItem()));
-                crashReportCategory.setDetail("Item data", itemStack.getDamageValue());
-                crashReportCategory.setDetail("Item name", () -> itemStack.getHoverName().getString());
-                throw new ReportedException(crashReport);
-            }
-        }
-    }
-
-    @Override
-    public void placeItemBackInInventory(ItemStack itemStack) {
-        this.placeItemBackInInventory(itemStack, true);
-    }
-
-    @Override
-    public void placeItemBackInInventory(ItemStack itemStack, boolean flag) {
-        while(true) {
-            if (!itemStack.isEmpty()) {
-                int i = this.getSlotWithRemainingSpace(itemStack);
-                if (i == -1) {
-                    i = this.getFreeSlot();
-                }
-
-                if (i != -1) {
-                    int j = itemStack.getMaxStackSize() - this.getRawItem(i).getCount();
-                    if (this.add(i, itemStack.split(j)) && flag && this.player instanceof ServerPlayer) {
-                        ((ServerPlayer)this.player).connection.send(new ClientboundContainerSetSlotPacket(-2, 0, i, this.getRawItem(i)));
-                    }
-                    continue;
-                }
-
-                this.player.drop(itemStack, false);
-            }
-
-            return;
-        }
-    }
-
-    @Override
-    public ItemStack removeItem(int rawIndex, final int j) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null
-                || indexedCompartment.compartment().get(indexedCompartment.index()).isEmpty()) {
-            return ItemStack.EMPTY;
-        }
-
-        return ContainerHelper.removeItem(indexedCompartment.compartment(), indexedCompartment.index(), j);
-    }
-
-    @Override
-    public void removeItem(ItemStack itemStack) {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                if (compartment.get(i) == itemStack) {
-                    compartment.set(i, ItemStack.EMPTY);
-                    break;
-                }
-            }
-        }
-    }
-
-    @Override
-    public ItemStack removeItemNoUpdate(int rawIndex) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            return ItemStack.EMPTY;
-        }
-
-        ItemStack removed = indexedCompartment.compartment().set(indexedCompartment.index(), ItemStack.EMPTY);
-
-        if (removed.isEmpty()) {
-            return ItemStack.EMPTY;
-        }
-
-        return removed;
-    }
-
-    @Override
-    public void setItem(int rawIndex, final ItemStack itemStack) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            this.player.drop(itemStack, true);
-            return;
-        }
-
-        indexedCompartment.compartment().set(indexedCompartment.index(), itemStack);
-    }
-
-    @Override
-    public float getDestroySpeed(BlockState blockState) {
-        return this.items.get(this.selected).getDestroySpeed(blockState);
-    }
-
-    @Override
-    public ListTag save(ListTag listTag) {
-        for (int i = 0; i < this.items.size(); ++i) {
-            if (!this.items.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)i);
-                this.items.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        for (int i = 0; i < this.armor.size(); ++i) {
-            if (!this.armor.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)(i + 100));
-                this.armor.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        for (int i = 0; i < this.offhand.size(); ++i) {
-            if (!this.offhand.get(i).isEmpty()) {
-                CompoundTag compoundTag = new CompoundTag();
-                compoundTag.putByte("Slot", (byte)(i + 150));
-                this.offhand.get(i).save(compoundTag);
-                listTag.add(compoundTag);
-            }
-        }
-
-        return listTag;
-    }
-
-    @Override
-    public void load(ListTag listTag) {
-        this.items.clear();
-        this.armor.clear();
-        this.offhand.clear();
-
-        for(int i = 0; i < listTag.size(); ++i) {
-            CompoundTag compoundTag = listTag.getCompound(i);
-            int j = compoundTag.getByte("Slot") & 255;
-            ItemStack itemstack = ItemStack.of(compoundTag);
-            if (!itemstack.isEmpty()) {
-                if (j < this.items.size()) {
-                    this.items.set(j, itemstack);
-                } else if (j >= 100 && j < this.armor.size() + 100) {
-                    this.armor.set(j - 100, itemstack);
-                } else if (j >= 150 && j < this.offhand.size() + 150) {
-                    this.offhand.set(j - 150, itemstack);
-                }
-            }
-        }
-
-    }
-
-    @Override
-    public int getContainerSize() {
-        return 45;
-    }
-
-    @Override
-    public boolean isEmpty() {
-        return !contains(itemStack -> !itemStack.isEmpty());
-    }
-
-    @Override
-    public ItemStack getItem(int rawIndex) {
-        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
-
-        if (indexedCompartment.compartment() == null) {
-            return ItemStack.EMPTY;
-        }
-
-        return indexedCompartment.compartment().get(indexedCompartment.index());
-    }
-
-    @Override
-    public Component getName() {
-        return this.player.getName();
-    }
-
-    @Override
-    public ItemStack getArmor(int index) {
-        return this.armor.get(index);
-    }
-
-    @Override
-    public void hurtArmor(DamageSource damagesource, float damage, int[] armorIndices) {
-        if (damage > 0.0F) {
-            damage /= 4.0F;
-            if (damage < 1.0F) {
-                damage = 1.0F;
-            }
-
-            for (int index : armorIndices) {
-                ItemStack itemstack = this.armor.get(index);
-                if ((!damagesource.isFire() || !itemstack.getItem().isFireResistant()) && itemstack.getItem() instanceof ArmorItem) {
-                    itemstack.hurtAndBreak((int) damage, this.player, localPlayer -> localPlayer.broadcastBreakEvent(EquipmentSlot.byTypeAndIndex(EquipmentSlot.Type.ARMOR, index)));
-                }
-            }
-        }
-    }
-
-    @Override
-    public void dropAll() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            for (int i = 0; i < compartment.size(); ++i) {
-                ItemStack itemstack = compartment.get(i);
-                if (!itemstack.isEmpty()) {
-                    this.player.drop(itemstack, true, false);
-                    compartment.set(i, ItemStack.EMPTY);
-                }
-            }
-        }
-    }
-
-    @Override
-    public void setChanged() {
-        super.setChanged();
-    }
-
-    @Override
-    public int getTimesChanged() {
-        return super.getTimesChanged();
-    }
-
-    @Override
-    public boolean stillValid(Player player) {
-        return true;
-    }
-
-    @Override
-    public boolean contains(ItemStack itemstack) {
-        return contains(itemStack -> itemStack.isEmpty() && itemStack.sameItem(itemstack));
-    }
-
-    @Override
-    public boolean contains(TagKey<Item> tagKey) {
-
-        return contains(itemStack -> !itemStack.isEmpty() && itemStack.is(tagKey));
-    }
-
-    @Override
-    public void replaceWith(Inventory inventory) {
-        Function<Integer, ItemStack> getter;
-
-        if (inventory instanceof SpecialPlayerInventory specialPlayerInventory) {
-            getter = specialPlayerInventory::getRawItem;
-        } else {
-            getter = inventory::getItem;
-        }
-
-        for(int i = 0; i < this.getContainerSize(); ++i) {
-            this.setRawItem(i, getter.apply(i));
-        }
-
-        this.selected = inventory.selected;
-    }
-
-    @Override
-    public void clearContent() {
-        for (NonNullList<ItemStack> compartment : this.compartments) {
-            compartment.clear();
-        }
-    }
-
-    @Override
-    public void fillStackedContents(StackedContents stackedContents) {
-        for (ItemStack itemstack : this.items) {
-            stackedContents.accountSimpleStack(itemstack);
-        }
-    }
-
-    @Override
-    public ItemStack removeFromSelected(boolean dropWholeStack) {
-        ItemStack itemstack = this.getSelected();
-        return itemstack.isEmpty() ? ItemStack.EMPTY : this.removeItem(this.selected, dropWholeStack ? itemstack.getCount() : 1);
-    }
-
-}

plugin/pom.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>openinvparent</artifactId>
     <groupId>com.lishid</groupId>
-    <version>4.2.1</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
   <artifactId>openinvplugincore</artifactId>

plugin/src/main/java/com/lishid/openinv/OfflineHandler.java

@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 3.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv;
-
-import com.lishid.openinv.internal.ISpecialInventory;
-import com.lishid.openinv.util.Permissions;
-import java.util.Map;
-import java.util.UUID;
-import java.util.function.BiFunction;
-import java.util.function.Consumer;
-import org.jetbrains.annotations.NotNull;
-
-record OfflineHandler(
-        @NotNull BiFunction<Map<UUID, ? extends ISpecialInventory>, UUID, ISpecialInventory> fetch,
-        @NotNull Consumer<@NotNull ISpecialInventory> handle) {
-
-    static final OfflineHandler REMOVE_AND_CLOSE = new OfflineHandler(
-            Map::remove,
-            inventory -> OpenInv.ejectViewers(inventory, viewer -> true)
-    );
-
-    static final OfflineHandler REQUIRE_PERMISSIONS = new OfflineHandler(
-            Map::get,
-            inventory -> OpenInv.ejectViewers(inventory, viewer -> !Permissions.OPENOFFLINE.hasPermission(viewer))
-    );
-
-}

plugin/src/main/java/com/lishid/openinv/OpenInv.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,6 +16,8 @@
 
 package com.lishid.openinv;
 
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
 import com.lishid.openinv.commands.ContainerSettingCommand;
 import com.lishid.openinv.commands.OpenInvCommand;
 import com.lishid.openinv.commands.SearchContainerCommand;
@@ -25,19 +27,23 @@ import com.lishid.openinv.internal.IAnySilentContainer;
 import com.lishid.openinv.internal.ISpecialEnderChest;
 import com.lishid.openinv.internal.ISpecialInventory;
 import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import com.lishid.openinv.listeners.InventoryListener;
+import com.lishid.openinv.listeners.PlayerListener;
+import com.lishid.openinv.listeners.PluginListener;
+import com.lishid.openinv.util.Cache;
 import com.lishid.openinv.util.ConfigUpdater;
+import com.lishid.openinv.util.InternalAccessor;
 import com.lishid.openinv.util.LanguageManager;
 import com.lishid.openinv.util.Permissions;
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.UUID;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.function.Consumer;
-import java.util.function.Predicate;
-import java.util.stream.Stream;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.chat.TextComponent;
 import org.bukkit.Bukkit;
@@ -50,8 +56,10 @@ import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryView;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.scheduler.BukkitRunnable;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -62,122 +70,96 @@ import org.jetbrains.annotations.Nullable;
  */
 public class OpenInv extends JavaPlugin implements IOpenInv {
 
-    private final Map<UUID, ISpecialPlayerInventory> inventories = new ConcurrentHashMap<>();
-    private final Map<UUID, ISpecialEnderChest> enderChests = new ConcurrentHashMap<>();
+    private final Map<String, ISpecialPlayerInventory> inventories = new HashMap<>();
+    private final Map<String, ISpecialEnderChest> enderChests = new HashMap<>();
+    private final Multimap<String, Class<? extends Plugin>> pluginUsage = HashMultimap.create();
+
+    private final Cache<String, Player> playerCache = new Cache<>(300000L,
+            value -> {
+                String key = OpenInv.this.getPlayerID(value);
+
+                return OpenInv.this.inventories.containsKey(key)
+                        && OpenInv.this.inventories.get(key).isInUse()
+                        || OpenInv.this.enderChests.containsKey(key)
+                        && OpenInv.this.enderChests.get(key).isInUse()
+                        || OpenInv.this.pluginUsage.containsKey(key);
+            },
+            value -> {
+                String key = OpenInv.this.getPlayerID(value);
+
+                // Check if inventory is stored, and if it is, remove it and eject all viewers
+                if (OpenInv.this.inventories.containsKey(key)) {
+                    Inventory inv = OpenInv.this.inventories.remove(key).getBukkitInventory();
+                    List<HumanEntity> viewers = new ArrayList<>(inv.getViewers());
+                    for (HumanEntity entity : viewers.toArray(new HumanEntity[0])) {
+                        entity.closeInventory();
+                    }
+                }
+
+                // Check if ender chest is stored, and if it is, remove it and eject all viewers
+                if (OpenInv.this.enderChests.containsKey(key)) {
+                    Inventory inv = OpenInv.this.enderChests.remove(key).getBukkitInventory();
+                    List<HumanEntity> viewers = new ArrayList<>(inv.getViewers());
+                    for (HumanEntity entity : viewers.toArray(new HumanEntity[0])) {
+                        entity.closeInventory();
+                    }
+                }
+
+                if (!OpenInv.this.disableSaving() && !value.isOnline()) {
+                    value.saveData();
+                }
+            });
 
     private InternalAccessor accessor;
     private LanguageManager languageManager;
-    private boolean isSpigot = false;
-    private OfflineHandler offlineHandler;
 
-    @Override
-    public void reloadConfig() {
-        super.reloadConfig();
-        this.offlineHandler = disableOfflineAccess() ? OfflineHandler.REMOVE_AND_CLOSE : OfflineHandler.REQUIRE_PERMISSIONS;
-    }
+    /**
+     * Evicts all viewers lacking cross-world permissions from a Player's inventory.
+     *
+     * @param player the Player
+     */
+    public void changeWorld(final Player player) {
 
-    @Override
-    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
-        if (!isSpigot || !this.accessor.isSupported()) {
-            this.sendVersionError(sender::sendMessage);
-            return true;
-        }
-        return false;
-    }
+        String key = this.getPlayerID(player);
 
-    @Override
-    public void onDisable() {
-        if (this.disableSaving()) {
+        // Check if the player is cached. If not, neither of their inventories is open.
+        if (!this.playerCache.containsKey(key)) {
             return;
         }
 
-        Stream.concat(inventories.values().stream(), enderChests.values().stream())
-                .map(inventory -> {
-                    // Cheat a bit - rather than stream twice, evict all viewers during remapping.
-                    ejectViewers(inventory, viewer -> true);
-                    if (inventory.getPlayer() instanceof Player player) {
-                        return player;
-                    }
-                    return null;
-                })
-                .filter(Objects::nonNull)
-                .distinct()
-                .forEach(player -> {
-                    if (!player.isOnline()) {
-                        player = accessor.getPlayerDataManager().inject(player);
-                    }
-                    player.saveData();
-                });
-    }
-
-    @Override
-    public void onEnable() {
-        // Save default configuration if not present.
-        this.saveDefaultConfig();
-
-        // Get plugin manager
-        PluginManager pm = this.getServer().getPluginManager();
-
-        this.accessor = new InternalAccessor(this);
-
-        this.languageManager = new LanguageManager(this, "en_us");
-        this.offlineHandler = disableOfflineAccess() ? OfflineHandler.REMOVE_AND_CLOSE : OfflineHandler.REQUIRE_PERMISSIONS;
-
-        try {
-            Class.forName("org.bukkit.entity.Player$Spigot");
-            isSpigot = true;
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-            isSpigot = false;
+        if (this.inventories.containsKey(key)) {
+            kickCrossWorldViewers(player, this.inventories.get(key));
         }
 
-        // Version check
-        if (isSpigot && this.accessor.isSupported()) {
-            // Update existing configuration. May require internal access.
-            new ConfigUpdater(this).checkForUpdates();
-
-            // Register listeners
-            pm.registerEvents(new PlayerListener(this), this);
-            pm.registerEvents(new InventoryListener(this), this);
-
-            // Register commands to their executors
-            this.setCommandExecutor(new OpenInvCommand(this), "openinv", "openender");
-            this.setCommandExecutor(new SearchContainerCommand(this), "searchcontainer");
-            this.setCommandExecutor(new SearchInvCommand(this), "searchinv", "searchender");
-            this.setCommandExecutor(new SearchEnchantCommand(this), "searchenchant");
-            this.setCommandExecutor(new ContainerSettingCommand(this), "silentcontainer", "anycontainer");
-
-        } else {
-            this.sendVersionError(this.getLogger()::warning);
+        if (this.enderChests.containsKey(key)) {
+            kickCrossWorldViewers(player, this.enderChests.get(key));
         }
-
     }
 
-    private void setCommandExecutor(@NotNull CommandExecutor executor, String @NotNull ... commands) {
-        for (String commandName : commands) {
-            PluginCommand command = this.getCommand(commandName);
-            if (command != null) {
-                command.setExecutor(executor);
+    private void kickCrossWorldViewers(Player player, ISpecialInventory inventory) {
+        List<HumanEntity> viewers = new ArrayList<>(inventory.getBukkitInventory().getViewers());
+        for (HumanEntity human : viewers) {
+            // If player has permission or is in the same world, allow continued access
+            // Just in case, also allow null worlds.
+            if (Permissions.CROSSWORLD.hasPermission(human) || Objects.equals(human.getWorld(), player.getWorld())) {
+                continue;
             }
+            human.closeInventory();
         }
     }
 
-    private void sendVersionError(@NotNull Consumer<String> messageMethod) {
-        if (!this.accessor.isSupported()) {
-            messageMethod.accept("Your server version (" + this.accessor.getVersion() + ") is not supported.");
-            messageMethod.accept("Please download the correct version of OpenInv here: " + this.accessor.getReleasesLink());
-        }
-        if (!isSpigot) {
-            messageMethod.accept("OpenInv requires that you use Spigot or a Spigot fork. Per the 1.14 update thread");
-            messageMethod.accept("(https://www.spigotmc.org/threads/369724/ \"A Note on CraftBukkit\"), if you are");
-            messageMethod.accept("encountering an inconsistency with vanilla that prevents you from using Spigot,");
-            messageMethod.accept("that is considered a Spigot bug and should be reported as such.");
-        }
-    }
-
-    @Override
-    public boolean isSupportedVersion() {
-        return this.accessor != null && this.accessor.isSupported();
+    /**
+     * Convert a raw slot number into a player inventory slot number.
+     *
+     * <p>Note that this method is specifically for converting an ISpecialPlayerInventory slot number into a regular
+     * player inventory slot number.
+     *
+     * @param view the open inventory view
+     * @param rawSlot the raw slot in the view
+     * @return the converted slot number
+     */
+    public int convertToPlayerSlot(InventoryView view, int rawSlot) {
+        return this.accessor.getPlayerDataManager().convertToPlayerSlot(view, rawSlot);
     }
 
     @Override
@@ -185,38 +167,28 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
         return this.getConfig().getBoolean("settings.disable-saving", false);
     }
 
+    @NotNull
     @Override
-    public boolean disableOfflineAccess() {
-        return this.getConfig().getBoolean("settings.disable-offline-access", false);
-    }
-
-    @Override
-    public @NotNull IAnySilentContainer getAnySilentContainer() {
+    public IAnySilentContainer getAnySilentContainer() {
         return this.accessor.getAnySilentContainer();
     }
 
     @Override
-    public boolean getAnyContainerStatus(@NotNull final OfflinePlayer offline) {
+    public boolean getPlayerAnyChestStatus(@NotNull final OfflinePlayer player) {
         boolean defaultState = false;
 
-        if (offline.isOnline()) {
-            Player onlinePlayer = offline.getPlayer();
+        if (player.isOnline()) {
+            Player onlinePlayer = player.getPlayer();
             if (onlinePlayer != null) {
                 defaultState = Permissions.ANY_DEFAULT.hasPermission(onlinePlayer);
             }
         }
 
-        return this.getConfig().getBoolean("toggles.any-chest." + offline.getUniqueId(), defaultState);
+        return this.getConfig().getBoolean("toggles.any-chest." + this.getPlayerID(player), defaultState);
     }
 
     @Override
-    public void setAnyContainerStatus(@NotNull final OfflinePlayer offline, final boolean status) {
-        this.getConfig().set("toggles.any-chest." + offline.getUniqueId(), status);
-        this.saveConfig();
-    }
-
-    @Override
-    public boolean getSilentContainerStatus(@NotNull final OfflinePlayer offline) {
+    public boolean getPlayerSilentChestStatus(@NotNull final OfflinePlayer offline) {
         boolean defaultState = false;
 
         if (offline.isOnline()) {
@@ -226,71 +198,57 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
             }
         }
 
-        return this.getConfig().getBoolean("toggles.silent-chest." + offline.getUniqueId(), defaultState);
+        return this.getConfig().getBoolean("toggles.silent-chest." + this.getPlayerID(offline), defaultState);
     }
 
+    @NotNull
     @Override
-    public void setSilentContainerStatus(@NotNull final OfflinePlayer offline, final boolean status) {
-        this.getConfig().set("toggles.silent-chest." + offline.getUniqueId(), status);
-        this.saveConfig();
-    }
-
-    @Override
-    public @NotNull ISpecialEnderChest getSpecialEnderChest(@NotNull final Player player, final boolean online)
+    public ISpecialEnderChest getSpecialEnderChest(@NotNull final Player player, final boolean online)
             throws InstantiationException {
-        UUID key = player.getUniqueId();
-
-        if (this.enderChests.containsKey(key)) {
-            return this.enderChests.get(key);
+        String id = this.getPlayerID(player);
+        if (this.enderChests.containsKey(id)) {
+            return this.enderChests.get(id);
         }
-
         ISpecialEnderChest inv = this.accessor.newSpecialEnderChest(player, online);
-        this.enderChests.put(key, inv);
+        this.enderChests.put(id, inv);
+        this.playerCache.put(id, player);
         return inv;
     }
 
+    @NotNull
     @Override
-    public @NotNull ISpecialPlayerInventory getSpecialInventory(@NotNull final Player player, final boolean online)
+    public ISpecialPlayerInventory getSpecialInventory(@NotNull final Player player, final boolean online)
             throws InstantiationException {
-        UUID key = player.getUniqueId();
-
-        if (this.inventories.containsKey(key)) {
-            return this.inventories.get(key);
+        String id = this.getPlayerID(player);
+        if (this.inventories.containsKey(id)) {
+            return this.inventories.get(id);
         }
-
         ISpecialPlayerInventory inv = this.accessor.newSpecialPlayerInventory(player, online);
-        this.inventories.put(key, inv);
+        this.inventories.put(id, inv);
+        this.playerCache.put(id, player);
         return inv;
     }
 
     @Override
-    public @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
-        return this.accessor.getPlayerDataManager().openInventory(player, inventory);
-    }
-
-    @Override
-    public boolean isPlayerLoaded(@NotNull UUID playerUuid) {
-        return this.inventories.containsKey(playerUuid) || this.enderChests.containsKey(playerUuid);
+    public boolean isSupportedVersion() {
+        return this.accessor != null && this.accessor.isSupported();
     }
 
     @Override
     public @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline) {
-        UUID key = offline.getUniqueId();
 
-        if (this.inventories.containsKey(key)) {
-            return (Player) this.inventories.get(key).getPlayer();
-        }
-
-        if (this.enderChests.containsKey(key)) {
-            return (Player) this.enderChests.get(key).getPlayer();
+        String key = this.getPlayerID(offline);
+        if (this.playerCache.containsKey(key)) {
+            return this.playerCache.get(key);
         }
 
         Player player = offline.getPlayer();
         if (player != null) {
+            this.playerCache.put(key, player);
             return player;
         }
 
-        if (disableOfflineAccess() || !this.isSupportedVersion()) {
+        if (!this.isSupportedVersion()) {
             return null;
         }
 
@@ -308,82 +266,28 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
             return null;
         }
 
+        if (player != null) {
+            this.playerCache.put(key, player);
+        }
+
         return player;
     }
 
     @Override
-    public void unload(@NotNull final OfflinePlayer offline) {
-        setPlayerOffline(offline, OfflineHandler.REMOVE_AND_CLOSE);
-    }
-
-    /**
-     * Evict all viewers lacking cross-world permissions when a {@link Player} changes worlds.
-     *
-     * @param player the Player
-     */
-    void changeWorld(@NotNull Player player) {
-        UUID key = player.getUniqueId();
-
-        if (this.inventories.containsKey(key)) {
-            kickCrossWorldViewers(player, this.inventories.get(key));
-        }
-
-        if (this.enderChests.containsKey(key)) {
-            kickCrossWorldViewers(player, this.enderChests.get(key));
-        }
-    }
-
-    private void kickCrossWorldViewers(@NotNull Player player, @NotNull ISpecialInventory inventory) {
-        ejectViewers(
-                inventory,
-                viewer ->
-                        !Permissions.CROSSWORLD.hasPermission(viewer)
-                                && !Objects.equals(viewer.getWorld(), player.getWorld()));
-    }
-
-    /**
-     * Convert a raw slot number into a player inventory slot number.
-     *
-     * <p>Note that this method is specifically for converting an ISpecialPlayerInventory slot number into a regular
-     * player inventory slot number.
-     *
-     * @param view    the open inventory view
-     * @param rawSlot the raw slot in the view
-     * @return the converted slot number
-     */
-    int convertToPlayerSlot(InventoryView view, int rawSlot) {
-        return this.accessor.getPlayerDataManager().convertToPlayerSlot(view, rawSlot);
-    }
-
-    public @Nullable String getLocalizedMessage(@NotNull CommandSender sender, @NotNull String key) {
-        return this.languageManager.getValue(key, getLocale(sender));
-    }
-
-    public @Nullable String getLocalizedMessage(
-            @NotNull CommandSender sender,
-            @NotNull String key,
-            String @NotNull ... replacements) {
-        return this.languageManager.getValue(key, getLocale(sender), replacements);
-    }
-
-    private @NotNull String getLocale(@NotNull CommandSender sender) {
-        if (sender instanceof Player) {
-            return ((Player) sender).getLocale();
-        } else {
-            return this.getConfig().getString("settings.locale", "en_us");
-        }
+    public @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
+        return this.accessor.getPlayerDataManager().openInventory(player, inventory);
     }
 
     public void sendMessage(@NotNull CommandSender sender, @NotNull String key) {
-        String message = getLocalizedMessage(sender, key);
+        String message = this.languageManager.getValue(key, getLocale(sender));
 
         if (message != null && !message.isEmpty()) {
             sender.sendMessage(message);
         }
     }
 
-    public void sendMessage(@NotNull CommandSender sender, @NotNull String key, String @NotNull... replacements) {
-        String message = getLocalizedMessage(sender, key, replacements);
+    public void sendMessage(@NotNull CommandSender sender, @NotNull String key, String... replacements) {
+        String message = this.languageManager.getValue(key, getLocale(sender), replacements);
 
         if (message != null && !message.isEmpty()) {
             sender.sendMessage(message);
@@ -391,7 +295,7 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
     }
 
     public void sendSystemMessage(@NotNull Player player, @NotNull String key) {
-        String message = getLocalizedMessage(player, key);
+        String message = this.languageManager.getValue(key, getLocale(player));
 
         if (message == null) {
             return;
@@ -410,76 +314,160 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
         player.spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText(message));
     }
 
+    public @Nullable String getLocalizedMessage(@NotNull CommandSender sender, @NotNull String key) {
+        return this.languageManager.getValue(key, getLocale(sender));
+    }
+
+    public @Nullable String getLocalizedMessage(@NotNull CommandSender sender, @NotNull String key, String... replacements) {
+        return this.languageManager.getValue(key, getLocale(sender), replacements);
+    }
+
+    private @NotNull String getLocale(@NotNull CommandSender sender) {
+        if (sender instanceof Player) {
+            return ((Player) sender).getLocale();
+        } else {
+            return this.getConfig().getString("settings.locale", "en_us");
+        }
+    }
+
+    @Override
+    public void onDisable() {
+
+        if (this.disableSaving()) {
+            return;
+        }
+
+        if (this.isSupportedVersion()) {
+            this.playerCache.invalidateAll();
+        }
+    }
+
+    @Override
+    public void onEnable() {
+
+        // Save default configuration if not present.
+        this.saveDefaultConfig();
+
+        // Get plugin manager
+        PluginManager pm = this.getServer().getPluginManager();
+
+        this.accessor = new InternalAccessor(this);
+
+        this.languageManager = new LanguageManager(this, "en_us");
+
+        // Version check
+        if (this.accessor.isSupported()) {
+            // Update existing configuration. May require internal access.
+            new ConfigUpdater(this).checkForUpdates();
+
+            // Register listeners
+            pm.registerEvents(new PlayerListener(this), this);
+            pm.registerEvents(new PluginListener(this), this);
+            pm.registerEvents(new InventoryListener(this), this);
+
+            // Register commands to their executors
+            this.setCommandExecutor(new OpenInvCommand(this), "openinv", "openender");
+            this.setCommandExecutor(new SearchContainerCommand(this), "searchcontainer");
+            this.setCommandExecutor(new SearchInvCommand(this), "searchinv", "searchender");
+            this.setCommandExecutor(new SearchEnchantCommand(this), "searchenchant");
+            this.setCommandExecutor(new ContainerSettingCommand(this), "silentcontainer", "anycontainer");
+
+        } else {
+            this.sendVersionError(this.getLogger()::warning);
+        }
+
+    }
+
+    private void sendVersionError(Consumer<String> messageMethod) {
+        messageMethod.accept("Your server version (" + this.accessor.getVersion() + ") is not supported.");
+        messageMethod.accept("Please obtain an appropriate version here: " + accessor.getReleasesLink());
+    }
+
+    private void setCommandExecutor(CommandExecutor executor, String... commands) {
+        for (String commandName : commands) {
+            PluginCommand command = this.getCommand(commandName);
+            if (command != null) {
+                command.setExecutor(executor);
+            }
+        }
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (!this.accessor.isSupported()) {
+            this.sendVersionError(sender::sendMessage);
+            return true;
+        }
+        return false;
+    }
+
+    public void releaseAllPlayers(final Plugin plugin) {
+        Iterator<Map.Entry<String, Class<? extends Plugin>>> iterator = this.pluginUsage.entries().iterator();
+
+        if (!iterator.hasNext()) {
+            return;
+        }
+
+        for (Map.Entry<String, Class<? extends Plugin>> entry = iterator.next(); iterator.hasNext(); entry = iterator.next()) {
+            if (entry.getValue().equals(plugin.getClass())) {
+                iterator.remove();
+            }
+        }
+    }
+
+    @Override
+    public void releasePlayer(@NotNull final Player player, @NotNull final Plugin plugin) {
+        String key = this.getPlayerID(player);
+
+        if (!this.pluginUsage.containsEntry(key, plugin.getClass())) {
+            return;
+        }
+
+        this.pluginUsage.remove(key, plugin.getClass());
+    }
+
+    @Override
+    public void retainPlayer(@NotNull final Player player, @NotNull final Plugin plugin) {
+        String key = this.getPlayerID(player);
+
+        if (this.pluginUsage.containsEntry(key, plugin.getClass())) {
+            return;
+        }
+
+        this.pluginUsage.put(key, plugin.getClass());
+    }
+
+    @Override
+    public void setPlayerAnyChestStatus(@NotNull final OfflinePlayer offline, final boolean status) {
+        this.getConfig().set("toggles.any-chest." + this.getPlayerID(offline), status);
+        this.saveConfig();
+    }
+
     /**
      * Method for handling a Player going offline.
      *
      * @param player the Player
+     * @throws IllegalStateException if the server version is unsupported
      */
-    void setPlayerOffline(@NotNull Player player) {
-        setPlayerOffline(player, offlineHandler);
-    }
+    public void setPlayerOffline(final Player player) {
 
-    private void setPlayerOffline(@NotNull OfflinePlayer player, @NotNull OfflineHandler handler) {
-        UUID key = player.getUniqueId();
+        String key = this.getPlayerID(player);
 
-        setPlayerOffline(inventories, key, handler);
-        setPlayerOffline(enderChests, key, handler);
-    }
-
-    private void setPlayerOffline(
-            @NotNull Map<UUID, ? extends ISpecialInventory> map,
-            @NotNull UUID key,
-            @NotNull OfflineHandler handler) {
-        ISpecialInventory inventory = handler.fetch().apply(map, key);
-        if (inventory == null) {
-            return;
-        }
-        inventory.setPlayerOffline();
-        if (!inventory.isInUse()) {
-            map.remove(key);
-        } else {
-            handler.handle().accept(inventory);
-        }
-    }
-
-    void handleCloseInventory(@NotNull HumanEntity exViewer, @NotNull ISpecialInventory inventory) {
-        Map<UUID, ? extends ISpecialInventory> map = inventory instanceof ISpecialPlayerInventory ? inventories : enderChests;
-        UUID key = inventory.getPlayer().getUniqueId();
-        @Nullable ISpecialInventory loaded = map.get(key);
-
-        if (loaded == null) {
-            // Loaded inventory has already been removed. Removal will handle saving if necessary.
+        // Check if the player is cached. If not, neither of their inventories is open.
+        if (!this.playerCache.containsKey(key)) {
             return;
         }
 
-        // This should only be possible if a plugin is doing funky things with our inventories.
-        if (loaded != inventory) {
-            Inventory bukkitInventory = inventory.getBukkitInventory();
-            // Just in case, respect contents of the inventory that was just used.
-            loaded.getBukkitInventory().setContents(bukkitInventory.getContents());
-            // We need to close this inventory to reduce risk of duplication bugs if the user is offline.
-            // We don't want to risk recursively closing the same inventory repeatedly, so we schedule dumping viewers.
-            // Worst case we schedule a couple redundant tasks if several people had the inventory open.
-            if (inventory.isInUse()) {
-                getServer().getScheduler().runTask(this, () -> ejectViewers(inventory, viewer -> true));
-            }
+        // Replace stored player with our own version
+        this.playerCache.put(key, this.accessor.getPlayerDataManager().inject(player));
+
+        if (this.inventories.containsKey(key)) {
+            this.inventories.get(key).setPlayerOffline();
         }
 
-        // Schedule task to check in use status later this tick. Closing user is still in viewer list.
-        getServer().getScheduler().runTask(this, () -> {
-            if (loaded.isInUse()) {
-                return;
-            }
-
-            // Re-fetch from map - prevents duplicate saves on multi-close.
-            ISpecialInventory current = map.remove(key);
-
-            if (!disableSaving()
-                    && current != null
-                    && current.getPlayer() instanceof Player player && !player.isOnline()) {
-                this.accessor.getPlayerDataManager().inject(player).saveData();
-            }
-        });
+        if (this.enderChests.containsKey(key)) {
+            this.enderChests.get(key).setPlayerOffline();
+        }
     }
 
     /**
@@ -488,49 +476,78 @@ public class OpenInv extends JavaPlugin implements IOpenInv {
      * @param player the Player
      * @throws IllegalStateException if the server version is unsupported
      */
-    void setPlayerOnline(@NotNull Player player) {
-        setPlayerOnline(inventories, player, player::updateInventory);
-        setPlayerOnline(enderChests, player, null);
-    }
+    public void setPlayerOnline(final Player player) {
 
-    private void setPlayerOnline(
-            @NotNull Map<UUID, ? extends ISpecialInventory> map,
-            @NotNull Player player,
-            @Nullable Runnable task) {
-        ISpecialInventory inventory = map.get(player.getUniqueId());
+        String key = this.getPlayerID(player);
 
-        if (inventory == null) {
-            // Inventory not open.
+        // Check if the player is cached. If not, neither of their inventories is open.
+        if (!this.playerCache.containsKey(key)) {
             return;
         }
 
-        inventory.setPlayerOnline(player);
+        this.playerCache.put(key, player);
 
-        // Eject viewers lacking permission.
-        ejectViewers(
-                inventory,
-                viewer ->
-                        !Permissions.OPENONLINE.hasPermission(viewer)
-                                || !Permissions.CROSSWORLD.hasPermission(viewer)
-                                && !Objects.equals(viewer.getWorld(), inventory.getPlayer().getWorld()));
+        if (this.inventories.containsKey(key)) {
+            this.inventories.get(key).setPlayerOnline(player);
+            new BukkitRunnable() {
+                @Override
+                public void run() {
+                    if (player.isOnline()) {
+                        player.updateInventory();
+                    }
+                }
+            }.runTask(this);
+        }
 
-        if (task != null) {
-            getServer().getScheduler().runTask(this, task);
+        if (this.enderChests.containsKey(key)) {
+            this.enderChests.get(key).setPlayerOnline(player);
         }
     }
 
-    static void ejectViewers(@NotNull ISpecialInventory inventory, @NotNull Predicate<@NotNull HumanEntity> predicate) {
-        Inventory bukkitInventory = inventory.getBukkitInventory();
-        for (HumanEntity viewer : new ArrayList<>(bukkitInventory.getViewers())) {
-            if (viewer.getUniqueId().equals(inventory.getPlayer().getUniqueId())
-                    && !viewer.getOpenInventory().getTopInventory().equals(bukkitInventory)) {
-                // Skip owner with other inventory open. They aren't actually a viewer.
+    @Override
+    public void setPlayerSilentChestStatus(@NotNull final OfflinePlayer offline, final boolean status) {
+        this.getConfig().set("toggles.silent-chest." + this.getPlayerID(offline), status);
+        this.saveConfig();
+    }
+
+    /**
+     * Displays all applicable help for OpenInv commands.
+     *
+     * @param player the Player to help
+     */
+    public void showHelp(final Player player) {
+        // Get registered commands
+        for (String commandName : this.getDescription().getCommands().keySet()) {
+            PluginCommand command = this.getCommand(commandName);
+
+            // Ensure command is successfully registered and player can use it
+            if (command == null  || !command.testPermissionSilent(player)) {
                 continue;
             }
-            if (predicate.test(viewer)) {
-                viewer.closeInventory();
+
+            // Send usage
+            player.sendMessage(command.getUsage().replace("<command>", commandName));
+
+            List<String> aliases = command.getAliases();
+            if (aliases.isEmpty()) {
+                continue;
             }
+
+            // Assemble alias list
+            StringBuilder aliasBuilder = new StringBuilder("   (aliases: ");
+            for (String alias : aliases) {
+                aliasBuilder.append(alias).append(", ");
+            }
+            aliasBuilder.delete(aliasBuilder.length() - 2, aliasBuilder.length()).append(')');
+
+            // Send all aliases
+            player.sendMessage(aliasBuilder.toString());
         }
     }
 
+    @Override
+    public void unload(@NotNull final OfflinePlayer offline) {
+        this.playerCache.invalidate(this.getPlayerID(offline));
+    }
+
 }

plugin/src/main/java/com/lishid/openinv/commands/ContainerSettingCommand.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -39,14 +39,15 @@ public class ContainerSettingCommand implements TabExecutor {
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
-        if (!(sender instanceof Player player)) {
+        if (!(sender instanceof Player)) {
             plugin.sendMessage(sender, "messages.error.consoleUnsupported");
             return true;
         }
 
+        Player player = (Player) sender;
         boolean any = command.getName().startsWith("any");
-        Predicate<Player> getSetting = any ? plugin::getAnyContainerStatus : plugin::getSilentContainerStatus;
-        BiConsumer<OfflinePlayer, Boolean> setSetting = any ? plugin::setAnyContainerStatus : plugin::setSilentContainerStatus;
+        Predicate<Player> getSetting = any ? plugin::getPlayerAnyChestStatus : plugin::getPlayerSilentChestStatus;
+        BiConsumer<OfflinePlayer, Boolean> setSetting = any ? plugin::setPlayerAnyChestStatus : plugin::setPlayerSilentChestStatus;
 
         if (args.length > 0) {
             args[0] = args[0].toLowerCase();

plugin/src/main/java/com/lishid/openinv/commands/OpenInvCommand.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,11 +23,9 @@ import com.lishid.openinv.util.TabCompleter;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
-import java.util.StringJoiner;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.command.PluginCommand;
 import org.bukkit.command.TabExecutor;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitRunnable;
@@ -45,24 +43,25 @@ public class OpenInvCommand implements TabExecutor {
 
     @Override
     public boolean onCommand(@NotNull final CommandSender sender, @NotNull final Command command, @NotNull final String label, @NotNull final String[] args) {
-        boolean openInv = command.getName().equals("openinv");
-
-        if (openInv && args.length > 0 && (args[0].equalsIgnoreCase("help") || args[0].equals("?"))) {
-            this.showHelp(sender);
-            return true;
-        }
-
-        if (!(sender instanceof Player player)) {
+        if (!(sender instanceof Player)) {
             plugin.sendMessage(sender, "messages.error.consoleUnsupported");
             return true;
         }
 
+        if (args.length > 0 && (args[0].equalsIgnoreCase("help") || args[0].equals("?"))) {
+            this.plugin.showHelp((Player) sender);
+            return true;
+        }
+
+        final Player player = (Player) sender;
+        final boolean openinv = command.getName().equals("openinv");
+
         // History management
-        String history = (openInv ? this.openInvHistory : this.openEnderHistory).get(player);
+        String history = (openinv ? this.openInvHistory : this.openEnderHistory).get(player);
 
         if (history == null || history.isEmpty()) {
             history = player.getName();
-            (openInv ? this.openInvHistory : this.openEnderHistory).put(player, history);
+            (openinv ? this.openInvHistory : this.openEnderHistory).put(player, history);
         }
 
         final String name;
@@ -90,7 +89,7 @@ public class OpenInvCommand implements TabExecutor {
                         if (!player.isOnline()) {
                             return;
                         }
-                        OpenInvCommand.this.openInventory(player, offlinePlayer, openInv);
+                        OpenInvCommand.this.openInventory(player, offlinePlayer, openinv);
                     }
                 }.runTask(OpenInvCommand.this.plugin);
 
@@ -100,40 +99,12 @@ public class OpenInvCommand implements TabExecutor {
         return true;
     }
 
-    private void showHelp(final CommandSender sender) {
-        // Get registered commands
-        for (String commandName : plugin.getDescription().getCommands().keySet()) {
-            PluginCommand command = plugin.getCommand(commandName);
-
-            // Ensure command is successfully registered and sender can use it
-            if (command == null  || !command.testPermissionSilent(sender)) {
-                continue;
-            }
-
-            // Send usage
-            sender.sendMessage(command.getUsage().replace("<command>", commandName));
-
-            List<String> aliases = command.getAliases();
-            if (!aliases.isEmpty()) {
-                // Assemble alias list
-                StringJoiner aliasJoiner = new StringJoiner(", ", "   (aliases: ", ")");
-                for (String alias : aliases) {
-                    aliasJoiner.add(alias);
-                }
-
-                // Send all aliases
-                sender.sendMessage(aliasJoiner.toString());
-            }
-
-        }
-    }
-
     private void openInventory(final Player player, final OfflinePlayer target, boolean openinv) {
         Player onlineTarget;
         boolean online = target.isOnline();
 
         if (!online) {
-            if (!plugin.disableOfflineAccess() && Permissions.OPENOFFLINE.hasPermission(player)) {
+            if (Permissions.OPENOFFLINE.hasPermission(player)) {
                 // Try loading the player's data
                 onlineTarget = this.plugin.loadPlayer(target);
             } else {
@@ -186,7 +157,7 @@ public class OpenInvCommand implements TabExecutor {
         }
 
         // Record the target
-        (openinv ? this.openInvHistory : this.openEnderHistory).put(player, target.getUniqueId().toString());
+        (openinv ? this.openInvHistory : this.openEnderHistory).put(player, this.plugin.getPlayerID(target));
 
         // Create the inventory
         final ISpecialInventory inv;

plugin/src/main/java/com/lishid/openinv/commands/SearchContainerCommand.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -44,7 +44,7 @@ public class SearchContainerCommand implements TabExecutor {
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
-        if (!(sender instanceof Player senderPlayer)) {
+        if (!(sender instanceof Player)) {
             plugin.sendMessage(sender, "messages.error.consoleUnsupported");
             return true;
         }
@@ -72,6 +72,7 @@ public class SearchContainerCommand implements TabExecutor {
             }
         }
 
+        Player senderPlayer = (Player) sender;
         World world = senderPlayer.getWorld();
         Chunk centerChunk = senderPlayer.getLocation().getChunk();
         StringBuilder locations = new StringBuilder();
@@ -83,9 +84,10 @@ public class SearchContainerCommand implements TabExecutor {
                 }
                 Chunk chunk = world.getChunkAt(centerChunk.getX() + dX, centerChunk.getZ() + dZ);
                 for (BlockState tileEntity : chunk.getTileEntities()) {
-                    if (!(tileEntity instanceof InventoryHolder holder)) {
+                    if (!(tileEntity instanceof InventoryHolder)) {
                         continue;
                     }
+                    InventoryHolder holder = (InventoryHolder) tileEntity;
                     if (!holder.getInventory().contains(material)) {
                         continue;
                     }

plugin/src/main/java/com/lishid/openinv/commands/SearchEnchantCommand.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -127,6 +127,7 @@ public class SearchEnchantCommand implements TabExecutor {
 
     private boolean containsEnchantment(Inventory inventory, @Nullable Enchantment enchant, int minLevel) {
         for (ItemStack item : inventory.getContents()) {
+            //noinspection ConstantConditions // Spigot improperly annotated, should be ItemStack @NotNull []
             if (item == null || item.getType() == Material.AIR) {
                 continue;
             }

plugin/src/main/java/com/lishid/openinv/internal/OpenInventoryView.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,7 +17,6 @@
 package com.lishid.openinv.internal;
 
 import com.lishid.openinv.OpenInv;
-import java.util.Objects;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryType;
@@ -71,7 +70,11 @@ public class OpenInventoryView extends InventoryView {
                             titleKey,
                             "%player%",
                             owner.getName());
-            title = Objects.requireNonNullElseGet(localTitle, () -> owner.getName() + titleDefaultSuffix);
+            if (localTitle != null) {
+                title = localTitle;
+            } else  {
+                title = owner.getName() + titleDefaultSuffix;
+            }
         }
 
         return title;

plugin/src/main/java/com/lishid/openinv/listeners/InventoryListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,9 +14,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.lishid.openinv;
+package com.lishid.openinv.listeners;
 
-import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.OpenInv;
 import com.lishid.openinv.internal.ISpecialPlayerInventory;
 import com.lishid.openinv.util.InventoryAccess;
 import com.lishid.openinv.util.Permissions;
@@ -45,31 +45,29 @@ import org.jetbrains.annotations.Nullable;
  *
  * @author Jikoo
  */
-record InventoryListener(OpenInv plugin) implements Listener {
+public class InventoryListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public InventoryListener(final OpenInv plugin) {
+        this.plugin = plugin;
+    }
 
     @EventHandler
-    private void onInventoryClose(@NotNull final InventoryCloseEvent event) {
-        if (!(event.getPlayer() instanceof Player player)) {
+    public void onInventoryClose(@NotNull final InventoryCloseEvent event) {
+        if (!(event.getPlayer() instanceof Player)) {
             return;
         }
 
-        if (this.plugin.getSilentContainerStatus(player)) {
-            this.plugin.getAnySilentContainer().deactivateContainer(player);
-        }
+        Player player = (Player) event.getPlayer();
 
-        ISpecialInventory specialInventory = InventoryAccess.getEnderChest(event.getInventory());
-        if (specialInventory != null) {
-            this.plugin.handleCloseInventory(event.getPlayer(), specialInventory);
-        } else {
-            specialInventory = InventoryAccess.getPlayerInventory(event.getInventory());
-            if (specialInventory != null) {
-                this.plugin.handleCloseInventory(event.getPlayer(), specialInventory);
-            }
+        if (this.plugin.getPlayerSilentChestStatus(player)) {
+            this.plugin.getAnySilentContainer().deactivateContainer(player);
         }
     }
 
     @EventHandler(priority = EventPriority.LOWEST)
-    private void onInventoryClick(@NotNull final InventoryClickEvent event) {
+    public void onInventoryClick(@NotNull final InventoryClickEvent event) {
         if (handleInventoryInteract(event)) {
             return;
         }
@@ -103,7 +101,7 @@ record InventoryListener(OpenInv plugin) implements Listener {
     }
 
     @EventHandler(priority = EventPriority.LOWEST)
-    private void onInventoryDrag(@NotNull final InventoryDragEvent event) {
+    public void onInventoryDrag(@NotNull final InventoryDragEvent event) {
         if (handleInventoryInteract(event)) {
             return;
         }

plugin/src/main/java/com/lishid/openinv/listeners/PlayerListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,8 +14,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.lishid.openinv;
+package com.lishid.openinv.listeners;
 
+import com.lishid.openinv.OpenInv;
 import com.lishid.openinv.util.Permissions;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Event.Result;
@@ -27,27 +28,32 @@ import org.bukkit.event.player.PlayerChangedWorldEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
-import org.jetbrains.annotations.NotNull;
 
-record PlayerListener(OpenInv plugin) implements Listener {
+public class PlayerListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public PlayerListener(OpenInv plugin) {
+        this.plugin = plugin;
+    }
 
     @EventHandler(priority = EventPriority.LOWEST)
-    private void onPlayerJoin(@NotNull PlayerJoinEvent event) {
+    public void onPlayerJoin(final PlayerJoinEvent event) {
         plugin.setPlayerOnline(event.getPlayer());
     }
 
     @EventHandler(priority = EventPriority.MONITOR)
-    private void onPlayerQuit(@NotNull PlayerQuitEvent event) {
+    public void onPlayerQuit(PlayerQuitEvent event) {
         plugin.setPlayerOffline(event.getPlayer());
     }
 
     @EventHandler
-    private void onWorldChange(@NotNull PlayerChangedWorldEvent event) {
+    public void onWorldChange(PlayerChangedWorldEvent event) {
         plugin.changeWorld(event.getPlayer());
     }
 
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
-    private void onPlayerInteract(@NotNull PlayerInteractEvent event) {
+    public void onPlayerInteract(PlayerInteractEvent event) {
 
         // Do not cancel 3rd party plugins' custom events
         if (!PlayerInteractEvent.class.equals(event.getClass())) {
@@ -61,23 +67,23 @@ record PlayerListener(OpenInv plugin) implements Listener {
         }
 
         Player player = event.getPlayer();
-        boolean any = Permissions.ANYCHEST.hasPermission(player) && plugin.getAnyContainerStatus(player);
-        boolean needsAny = plugin.getAnySilentContainer().isAnyContainerNeeded(event.getClickedBlock());
+        boolean any = Permissions.ANYCHEST.hasPermission(player) && plugin.getPlayerAnyChestStatus(player);
+        boolean needsAny = plugin.getAnySilentContainer().isAnyContainerNeeded(player, event.getClickedBlock());
 
         if (!any && needsAny) {
             return;
         }
 
-        boolean silent = Permissions.SILENT.hasPermission(player) && plugin.getSilentContainerStatus(player);
+        boolean silent = Permissions.SILENT.hasPermission(player) && plugin.getPlayerSilentChestStatus(player);
 
         // If anycontainer or silentcontainer is active
         if (any || silent) {
             if (plugin.getAnySilentContainer().activateContainer(player, silent, event.getClickedBlock())) {
-                if (silent && needsAny) {
+                if (silent && plugin.notifySilentChest() && needsAny && plugin.notifyAnyChest()) {
                     plugin.sendSystemMessage(player, "messages.info.containerBlockedSilent");
-                } else if (needsAny) {
+                } else if (needsAny && plugin.notifyAnyChest()) {
                     plugin.sendSystemMessage(player, "messages.info.containerBlocked");
-                } else if (silent) {
+                } else if (silent && plugin.notifySilentChest()) {
                     plugin.sendSystemMessage(player, "messages.info.containerSilent");
                 }
             }

plugin/src/main/java/com/lishid/openinv/listeners/PluginListener.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.listeners;
+
+import com.lishid.openinv.OpenInv;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.server.PluginDisableEvent;
+
+/**
+ * Listener for plugin-related events.
+ *
+ * @author Jikoo
+ */
+public class PluginListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public PluginListener(OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler
+    public void onPluginDisable(PluginDisableEvent event) {
+        plugin.releaseAllPlayers(event.getPlugin());
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/Cache.java

@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import com.google.common.collect.Multimap;
+import com.google.common.collect.TreeMultimap;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+/**
+ * A minimal thread-safe time-based cache implementation backed by a HashMap and TreeMultimap.
+ *
+ * @author Jikoo
+ */
+public class Cache<K, V> {
+
+    private final Map<K, V> internal;
+    private final Multimap<Long, K> expiry;
+    private final long retention;
+    private final Predicate<V> inUseCheck;
+    private final Consumer<V> postRemoval;
+
+    /**
+     * Constructs a Cache with the specified retention duration, in use function, and post-removal function.
+     *
+     * @param retention duration after which keys are automatically invalidated if not in use
+     * @param inUseCheck Predicate used to check if a key is considered in use
+     * @param postRemoval Consumer used to perform any operations required when a key is invalidated
+     */
+    public Cache(final long retention, final Predicate<V> inUseCheck, final Consumer<V> postRemoval) {
+        this.internal = new HashMap<>();
+
+        this.expiry = TreeMultimap.create(Long::compareTo, (k1, k2) -> Objects.equals(k1, k2) ? 0 : 1);
+
+        this.retention = retention;
+        this.inUseCheck = inUseCheck;
+        this.postRemoval = postRemoval;
+    }
+
+    /**
+     * Set a key and value pair. Keys are unique. Using an existing key will cause the old value to
+     * be overwritten and the expiration timer to be reset.
+     *
+     * @param key key with which the specified value is to be associated
+     * @param value value to be associated with the specified key
+     */
+    public void put(final K key, final V value) {
+        // Invalidate key - runs lazy check and ensures value won't be cleaned up early
+        this.invalidate(key);
+
+        synchronized (this.internal) {
+            this.internal.put(key, value);
+            this.expiry.put(System.currentTimeMillis() + this.retention, key);
+        }
+    }
+
+    /**
+     * Returns the value to which the specified key is mapped, or null if no value is mapped for the key.
+     *
+     * @param key the key whose associated value is to be returned
+     * @return the value to which the specified key is mapped, or null if no value is mapped for the key
+     */
+    public V get(final K key) {
+        // Run lazy check to clean cache
+        this.lazyCheck();
+
+        synchronized (this.internal) {
+            return this.internal.get(key);
+        }
+    }
+
+    /**
+     * Returns true if the specified key is mapped to a value.
+     *
+     * @param key key to check if a mapping exists for
+     * @return true if a mapping exists for the specified key
+     */
+    public boolean containsKey(final K key) {
+        // Run lazy check to clean cache
+        this.lazyCheck();
+
+        synchronized (this.internal) {
+            return this.internal.containsKey(key);
+        }
+    }
+
+    /**
+     * Forcibly invalidates a key, even if it is considered to be in use.
+     *
+     * @param key key to invalidate
+     */
+    public void invalidate(final K key) {
+        // Run lazy check to clean cache
+        this.lazyCheck();
+
+        synchronized (this.internal) {
+            if (!this.internal.containsKey(key)) {
+                // Value either not present or cleaned by lazy check. Either way, we're good
+                return;
+            }
+
+            // Remove stored object
+            this.internal.remove(key);
+
+            // Remove expiration entry - prevents more work later, plus prevents issues with values invalidating early
+            for (Iterator<Map.Entry<Long, K>> iterator = this.expiry.entries().iterator(); iterator.hasNext();) {
+                if (key.equals(iterator.next().getValue())) {
+                    iterator.remove();
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * Forcibly invalidates all keys, even if they are considered to be in use.
+     */
+    public void invalidateAll() {
+        synchronized (this.internal) {
+            for (V value : this.internal.values()) {
+                this.postRemoval.accept(value);
+            }
+            this.expiry.clear();
+            this.internal.clear();
+        }
+    }
+
+    /**
+     * Invalidate all expired keys that are not considered in use. If a key is expired but is
+     * considered in use by the provided Function, its expiration time is reset.
+     */
+    private void lazyCheck() {
+        long now = System.currentTimeMillis();
+        synchronized (this.internal) {
+            List<K> inUse = new ArrayList<>();
+            for (Iterator<Map.Entry<Long, K>> iterator = this.expiry.entries().iterator(); iterator
+                    .hasNext();) {
+                Map.Entry<Long, K> entry = iterator.next();
+
+                if (entry.getKey() > now) {
+                    break;
+                }
+
+                iterator.remove();
+
+                if (this.inUseCheck.test(this.internal.get(entry.getValue()))) {
+                    inUse.add(entry.getValue());
+                    continue;
+                }
+
+                V value = this.internal.remove(entry.getValue());
+
+                if (value == null) {
+                    continue;
+                }
+
+                this.postRemoval.accept(value);
+            }
+
+            long nextExpiry = now + this.retention;
+            for (K value : inUse) {
+                this.expiry.put(nextExpiry, value);
+            }
+        }
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/ConfigUpdater.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,7 +25,13 @@ import java.util.Set;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.configuration.ConfigurationSection;
 
-public record ConfigUpdater(OpenInv plugin) {
+public class ConfigUpdater {
+
+    private final OpenInv plugin;
+
+    public ConfigUpdater(OpenInv plugin) {
+        this.plugin = plugin;
+    }
 
     public void checkForUpdates() {
         final int version = plugin.getConfig().getInt("config-version", 1);
@@ -54,9 +60,6 @@ public record ConfigUpdater(OpenInv plugin) {
             if (version < 4) {
                 updateConfig3To4();
             }
-            if (version < 5) {
-                updateConfig4To5();
-            }
 
             plugin.getServer().getScheduler().runTask(plugin, () -> {
                 plugin.saveConfig();
@@ -65,13 +68,6 @@ public record ConfigUpdater(OpenInv plugin) {
         });
     }
 
-    private void updateConfig4To5() {
-        plugin.getServer().getScheduler().runTask(plugin, () -> {
-            plugin.getConfig().set("settings.disable-offline-access", false);
-            plugin.getConfig().set("config-version", 5);
-        });
-    }
-
     private void updateConfig3To4() {
         plugin.getServer().getScheduler().runTask(plugin, () -> {
             plugin.getConfig().set("notify", null);
@@ -128,7 +124,7 @@ public record ConfigUpdater(OpenInv plugin) {
         for (String playerName : keys) {
             OfflinePlayer player = plugin.matchPlayer(playerName);
             if (player != null) {
-                toggles.put(player.getUniqueId().toString(), section.getBoolean(playerName + ".toggle", false));
+                toggles.put(plugin.getPlayerID(player), section.getBoolean(playerName + ".toggle", false));
             }
         }
 

plugin/src/main/java/com/lishid/openinv/util/InternalAccessor.java

@@ -14,28 +14,28 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.lishid.openinv;
+package com.lishid.openinv.util;
 
 import com.lishid.openinv.internal.IAnySilentContainer;
 import com.lishid.openinv.internal.IPlayerDataManager;
 import com.lishid.openinv.internal.ISpecialEnderChest;
 import com.lishid.openinv.internal.ISpecialInventory;
 import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import com.lishid.openinv.util.InventoryAccess;
 import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.jetbrains.annotations.NotNull;
 
-class InternalAccessor {
+public class InternalAccessor {
 
-    private final @NotNull Plugin plugin;
+    private final Plugin plugin;
     private final String version;
     private boolean supported = false;
     private IPlayerDataManager playerDataManager;
     private IAnySilentContainer anySilentContainer;
 
-    InternalAccessor(@NotNull Plugin plugin) {
+    public InternalAccessor(final Plugin plugin) {
         this.plugin = plugin;
 
         String packageName = plugin.getServer().getClass().getPackage().getName();
@@ -51,30 +51,56 @@ class InternalAccessor {
     }
 
     public String getReleasesLink() {
-
-        return switch (version) {
-            case "1_4_5", "1_4_6", "v1_4_R1", "v1_5_R2", "v1_5_R3", "v1_6_R1", "v1_6_R2", "v1_6_R3",
-                    "v1_7_R1", "v1_7_R2", "v1_7_R3", "v1_7_R4", "v1_8_R1", "v1_8_R2",
-                    "v1_9_R1", "v1_9_R2", "v1_10_R1", "v1_11_R1", "v1_12_R1"
-                    -> "https://github.com/lishid/OpenInv/releases/tag/4.0.0 (OpenInv-legacy)";
-            case "v1_13_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.0.0";
-            case "v1_13_R2" -> "https://github.com/lishid/OpenInv/releases/tag/4.0.7";
-            case "v1_14_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.1";
-            case "v1_16_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.4";
-            case "v1_8_R3", "v1_15_R1", "v1_16_R2" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.5";
-            case "v1_16_R3" -> "https://github.com/Jikoo/OpenInv/releases/tag/4.1.8";
-            case "v1_17_R1", "v1_18_R1" -> "https://github.com/Jikoo/OpenInv/releases/tag/4.1.10";
-            default -> "https://github.com/Jikoo/OpenInv/releases";
-        };
+        switch (version) {
+            case "1_4_5":
+            case "1_4_6":
+            case "v1_4_R1":
+            case "v1_5_R2":
+            case "v1_5_R3":
+            case "v1_6_R1":
+            case "v1_6_R2":
+            case "v1_6_R3":
+            case "v1_7_R1":
+            case "v1_7_R2":
+            case "v1_7_R3":
+            case "v1_7_R4":
+            case "v1_8_R1":
+            case "v1_8_R2":
+            case "v1_9_R1":
+            case "v1_9_R2":
+            case "v1_10_R1":
+            case "v1_11_R1":
+            case "v1_12_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.0 (OpenInv-legacy)";
+            case "v1_13_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.0";
+            case "v1_13_R2":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.7";
+            case "v1_14_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.1";
+            case "v1_16_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.4";
+            case "v1_8_R3":
+            case "v1_15_R1":
+            case "v1_16_R2":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.5";
+            case "v1_16_R3":
+            default:
+                return "https://github.com/Jikoo/OpenInv/releases";
+        }
     }
 
-    private @NotNull <T> T createObject(
-            @NotNull Class<? extends T> assignableClass,
-            @NotNull String className,
-            @NotNull Object @NotNull ... params)
-            throws ClassCastException, ReflectiveOperationException {
+    private <T> T createObject(final Class<? extends T> assignableClass, final String className,
+            final Object... params) throws ClassCastException, ClassNotFoundException,
+            InstantiationException, IllegalAccessException, IllegalArgumentException,
+            InvocationTargetException, NoSuchMethodException, SecurityException {
         // Fetch internal class if it exists.
         Class<?> internalClass = Class.forName("com.lishid.openinv.internal." + this.version + "." + className);
+        if (!assignableClass.isAssignableFrom(internalClass)) {
+            String message = String.format("Found class %s but cannot cast to %s!", internalClass.getName(), assignableClass.getName());
+            this.plugin.getLogger().warning(message);
+            throw new IllegalStateException(message);
+        }
 
         // Quick return: no parameters, no need to fiddle about finding the correct constructor.
         if (params.length == 0) {
@@ -105,10 +131,10 @@ class InternalAccessor {
         String message = builder.append(']').toString();
         this.plugin.getLogger().warning(message);
 
-        throw new NoSuchMethodException(message);
+        throw new IllegalArgumentException(message);
     }
 
-    private @NotNull <T extends ISpecialInventory> T createSpecialInventory(
+    private <T extends ISpecialInventory> T createSpecialInventory(
             @NotNull Class<? extends T> assignableClass,
             @NotNull String className,
             @NotNull Player player,
@@ -131,7 +157,7 @@ class InternalAccessor {
      * @return the IAnySilentContainer
      * @throws IllegalStateException if server version is unsupported
      */
-    public @NotNull IAnySilentContainer getAnySilentContainer() {
+    public IAnySilentContainer getAnySilentContainer() {
         if (!this.supported) {
             throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
         }
@@ -144,7 +170,7 @@ class InternalAccessor {
      * @return the IPlayerDataManager
      * @throws IllegalStateException if server version is unsupported
      */
-    public @NotNull IPlayerDataManager getPlayerDataManager() {
+    public IPlayerDataManager getPlayerDataManager() {
         if (!this.supported) {
             throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
         }
@@ -152,12 +178,13 @@ class InternalAccessor {
     }
 
     /**
-     * Gets the server implementation version.
+     * Gets the server implementation version. If not initialized, returns the string "null"
+     * instead.
      *
-     * @return the version
+     * @return the version, or "null"
      */
-    public @NotNull String getVersion() {
-        return this.version;
+    public String getVersion() {
+        return this.version != null ? this.version : "null";
     }
 
     /**

plugin/src/main/java/com/lishid/openinv/util/LanguageManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -39,130 +39,132 @@ import org.jetbrains.annotations.Nullable;
  */
 public class LanguageManager {
 
-    private final OpenInv plugin;
-    private final String defaultLocale;
-    private final Map<String, YamlConfiguration> locales;
+	private final OpenInv plugin;
+	private final String defaultLocale;
+	private final Map<String, YamlConfiguration> locales;
 
-    public LanguageManager(@NotNull OpenInv plugin, @NotNull String defaultLocale) {
-        this.plugin = plugin;
-        this.defaultLocale = defaultLocale;
-        this.locales = new HashMap<>();
-        getOrLoadLocale(defaultLocale);
-    }
+	public LanguageManager(@NotNull OpenInv plugin, @NotNull String defaultLocale) {
+		this.plugin = plugin;
+		this.defaultLocale = defaultLocale;
+		this.locales = new HashMap<>();
+		getOrLoadLocale(defaultLocale);
+	}
 
-    private @NotNull YamlConfiguration getOrLoadLocale(@NotNull String locale) {
-        YamlConfiguration loaded = locales.get(locale);
-        if (loaded != null) {
-            return loaded;
-        }
+	private YamlConfiguration getOrLoadLocale(@NotNull String locale) {
+		YamlConfiguration loaded = locales.get(locale);
+		if (loaded != null) {
+			return loaded;
+		}
 
-        InputStream resourceStream = plugin.getResource("locale/" + locale + ".yml");
-        YamlConfiguration localeConfigDefaults;
-        if (resourceStream == null) {
-            localeConfigDefaults = new YamlConfiguration();
-        } else {
-            try (BufferedReader reader = new BufferedReader(new InputStreamReader(resourceStream))) {
-                localeConfigDefaults = YamlConfiguration.loadConfiguration(reader);
-            } catch (IOException e) {
-                plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to load resource " + locale + ".yml", e);
-                localeConfigDefaults = new YamlConfiguration();
-            }
-        }
+		InputStream resourceStream = plugin.getResource(locale + ".yml");
+		YamlConfiguration localeConfigDefaults;
+		if (resourceStream == null) {
+			localeConfigDefaults = new YamlConfiguration();
+		} else {
+			try (BufferedReader reader = new BufferedReader(new InputStreamReader(resourceStream))) {
+				localeConfigDefaults = YamlConfiguration.loadConfiguration(reader);
+			} catch (IOException e) {
+				plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to load resource " + locale + ".yml", e);
+				localeConfigDefaults = new YamlConfiguration();
+			}
+		}
 
-        File file = new File(plugin.getDataFolder(), locale + ".yml");
-        YamlConfiguration localeConfig;
+		File file = new File(plugin.getDataFolder(), locale + ".yml");
+		YamlConfiguration localeConfig;
 
-        if (!file.exists()) {
-            localeConfig = localeConfigDefaults;
-            try {
-                localeConfigDefaults.save(file);
-            } catch (IOException e) {
-                plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
-            }
-        } else {
-            localeConfig = YamlConfiguration.loadConfiguration(file);
+		if (!file.exists()) {
+			localeConfig = localeConfigDefaults;
+			try {
+				localeConfigDefaults.save(file);
+			} catch (IOException e) {
+				plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
+			}
+		} else {
+			localeConfig = YamlConfiguration.loadConfiguration(file);
 
-            // Add new language keys
-            List<String> newKeys = new ArrayList<>();
-            for (String key : localeConfigDefaults.getKeys(true)) {
-                if (localeConfigDefaults.isConfigurationSection(key)) {
-                    continue;
-                }
+			// Add new language keys
+			List<String> newKeys = new ArrayList<>();
+			for (String key : localeConfigDefaults.getKeys(true)) {
+				if (localeConfigDefaults.isConfigurationSection(key)) {
+					continue;
+				}
 
-                if (localeConfig.isSet(key)) {
-                    continue;
-                }
+				if (localeConfig.isSet(key)) {
+					continue;
+				}
 
-                localeConfig.set(key, localeConfigDefaults.get(key));
-                newKeys.add(key);
-            }
+				localeConfig.set(key, localeConfigDefaults.get(key));
+				newKeys.add(key);
+			}
 
-            if (!newKeys.isEmpty()) {
-                plugin.getLogger().info("[LanguageManager] Added new language keys: " + String.join(", ", newKeys));
-                try {
-                    localeConfig.save(file);
-                } catch (IOException e) {
-                    plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
-                }
-            }
-        }
+			if (!newKeys.isEmpty()) {
+				plugin.getLogger().info("[LanguageManager] Added new language keys: " + String.join(", ", newKeys));
+				try {
+					localeConfig.save(file);
+				} catch (IOException e) {
+					plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
+				}
+			}
+		}
 
-        if (!locale.equals(defaultLocale)) {
-            localeConfigDefaults = locales.get(defaultLocale);
+		if (!locale.equals(defaultLocale)) {
+			localeConfigDefaults = locales.get(defaultLocale);
 
-            // Check for missing keys
-            List<String> newKeys = new ArrayList<>();
-            for (String key : localeConfigDefaults.getKeys(true)) {
-                if (localeConfigDefaults.isConfigurationSection(key)) {
-                    continue;
-                }
+			// Check for missing keys
+			List<String> newKeys = new ArrayList<>();
+			for (String key : localeConfigDefaults.getKeys(true)) {
+				if (localeConfigDefaults.isConfigurationSection(key)) {
+					continue;
+				}
 
-                if (localeConfig.isSet(key)) {
-                    continue;
-                }
+				if (localeConfig.isSet(key)) {
+					continue;
+				}
 
-                newKeys.add(key);
-            }
+				newKeys.add(key);
+			}
 
-            if (!newKeys.isEmpty()) {
-                plugin.getLogger().info("[LanguageManager] Missing translations from " + locale + ".yml: " + String.join(", ", newKeys));
-            }
+			if (!newKeys.isEmpty()) {
+				plugin.getLogger().info("[LanguageManager] Missing translations from " + locale + ".yml: " + String.join(", ", newKeys));
+			}
 
-            // Fall through to default locale
-            localeConfig.setDefaults(localeConfigDefaults);
-        }
+			// Fall through to default locale
+			localeConfig.setDefaults(localeConfigDefaults);
+		}
 
-        locales.put(locale, localeConfig);
-        return localeConfig;
-    }
+		locales.put(locale, localeConfig);
+		return localeConfig;
+	}
 
-    public @Nullable String getValue(@NotNull String key, @Nullable String locale) {
-        String value = getOrLoadLocale(locale == null ? defaultLocale : locale.toLowerCase()).getString(key);
-        if (value == null || value.isEmpty()) {
-            return null;
-        }
+	@Nullable
+	public String getValue(@NotNull String key, @Nullable String locale) {
+		String value = getOrLoadLocale(locale == null ? defaultLocale : locale.toLowerCase()).getString(key);
+		if (value == null || value.isEmpty()) {
+			return null;
+		}
 
-        value = ChatColor.translateAlternateColorCodes('&', value);
+		value = ChatColor.translateAlternateColorCodes('&', value);
 
-        return value;
-    }
+		return value;
+	}
 
-    public @Nullable String getValue(@NotNull String key, @Nullable String locale, String @NotNull ... replacements) {
-        if (replacements.length % 2 != 0) {
-            plugin.getLogger().log(Level.WARNING, "[LanguageManager] Replacement data is uneven", new Exception());
-        }
+	@Nullable
+	public String getValue(@NotNull String key, @Nullable String locale, @NotNull String... replacements) {
+		if (replacements.length % 2 != 0) {
+			plugin.getLogger().log(Level.WARNING, "[LanguageManager] Replacement data is uneven", new Exception());
+		}
 
-        String value = getValue(key, locale);
+		String value = getValue(key, locale);
 
-        if (value == null) {
-            return null;
-        }
+		if (value == null) {
+			return null;
+		}
 
-        for (int i = 0; i < replacements.length; i += 2) {
-            value = value.replace(replacements[i], replacements[i + 1]);
-        }
+		for (int i = 0; i < replacements.length; i += 2) {
+			value = value.replace(replacements[i], replacements[i + 1]);
+		}
 
-        return value;
-    }
+		return value;
+	}
 
 }

plugin/src/main/java/com/lishid/openinv/util/Permissions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 lishid. All rights reserved.
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,7 +17,6 @@
 package com.lishid.openinv.util;
 
 import org.bukkit.permissions.Permissible;
-import org.jetbrains.annotations.NotNull;
 
 public enum Permissions {
 
@@ -51,7 +50,7 @@ public enum Permissions {
         this.uninheritable = uninheritable;
     }
 
-    public boolean hasPermission(@NotNull Permissible permissible) {
+    public boolean hasPermission(Permissible permissible) {
 
         boolean hasPermission = permissible.hasPermission(permission);
         if (uninheritable || hasPermission || permissible.isPermissionSet(permission)) {

plugin/src/main/resources/config.yml

@@ -1,5 +1,4 @@
-config-version: 5
+config-version: 4
 settings:
-  disable-offline-access: false
   disable-saving: false
   locale: 'en_us'

pom.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright (C) 2011-2022 lishid. All rights reserved.
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
   ~
   ~ This program is free software: you can redistribute it and/or modify
   ~ it under the terms of the GNU General Public License as published by
@@ -21,16 +21,14 @@
   <artifactId>openinvparent</artifactId>
   <name>OpenInv</name>
   <url>http://dev.bukkit.org/bukkit-plugins/openinv/</url>
-  <version>4.2.1</version>
+  <version>4.1.9-SNAPSHOT</version>
 
   <packaging>pom</packaging>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>17</maven.compiler.source>
-    <maven.compiler.target>17</maven.compiler.target>
-    <!-- Silence IDE warning - property is declared in individual internal modules. -->
-    <spigot.version>unknown</spigot.version>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
   </properties>
 
   <profiles>
@@ -39,8 +37,8 @@
       <modules>
         <module>api</module>
         <module>plugin</module>
-        <module>internal/v1_18_R2</module>
-        <module>internal/v1_19_R1</module>
+        <module>internal/v1_16_R3</module>
+        <module>internal/v1_17_R1</module>
         <module>assembly</module>
       </modules>
     </profile>
@@ -71,31 +69,25 @@
         <artifactId>annotations</artifactId>
         <groupId>org.jetbrains</groupId>
         <scope>provided</scope>
-        <version>23.0.0</version>
+        <version>21.0.1</version>
       </dependency>
       <dependency>
         <artifactId>spigot-api</artifactId>
         <groupId>org.spigotmc</groupId>
         <scope>provided</scope>
-        <version>1.17.1-R0.1-SNAPSHOT</version>
+        <version>1.16.5-R0.1-SNAPSHOT</version>
       </dependency>
       <dependency>
         <artifactId>openinvapi</artifactId>
         <groupId>com.lishid</groupId>
         <scope>compile</scope>
-        <version>4.2.1</version>
+        <version>4.1.9-SNAPSHOT</version>
       </dependency>
       <dependency>
         <artifactId>openinvplugincore</artifactId>
         <groupId>com.lishid</groupId>
         <scope>compile</scope>
-        <version>4.2.1</version>
-        <exclusions>
-          <exclusion>
-            <groupId>com.lishid</groupId>
-            <artifactId>openinvapi</artifactId>
-          </exclusion>
-        </exclusions>
+        <version>4.1.9-SNAPSHOT</version>
       </dependency>
     </dependencies>
   </dependencyManagement>
@@ -133,7 +125,7 @@
             </execution>
           </executions>
           <groupId>org.apache.maven.plugins</groupId>
-          <version>3.3.0</version>
+          <version>3.2.4</version>
         </plugin>
 
         <plugin>
@@ -145,41 +137,7 @@
         <plugin>
           <artifactId>maven-assembly-plugin</artifactId>
           <groupId>org.apache.maven.plugins</groupId>
-          <version>3.4.2</version>
-        </plugin>
-
-        <plugin>
-          <groupId>net.md-5</groupId>
-          <artifactId>specialsource-maven-plugin</artifactId>
-          <version>1.2.4</version>
-          <executions>
-            <execution>
-              <phase>package</phase>
-              <goals>
-                <goal>remap</goal>
-              </goals>
-              <id>remap-obf</id>
-              <configuration>
-                <srgIn>org.spigotmc:minecraft-server:${spigot.version}:txt:maps-mojang</srgIn>
-                <reverse>true</reverse>
-                <remappedDependencies>org.spigotmc:spigot:${spigot.version}:jar:remapped-mojang</remappedDependencies>
-                <remappedArtifactAttached>true</remappedArtifactAttached>
-                <remappedClassifierName>remapped-obf</remappedClassifierName>
-              </configuration>
-            </execution>
-            <execution>
-              <phase>package</phase>
-              <goals>
-                <goal>remap</goal>
-              </goals>
-              <id>remap-spigot</id>
-              <configuration>
-                <inputFile>${project.build.directory}/${project.artifactId}-${project.version}-remapped-obf.jar</inputFile>
-                <srgIn>org.spigotmc:minecraft-server:${spigot.version}:csrg:maps-spigot</srgIn>
-                <remappedDependencies>org.spigotmc:spigot:${spigot.version}:jar:remapped-obf</remappedDependencies>
-              </configuration>
-            </execution>
-          </executions>
+          <version>3.3.0</version>
         </plugin>
       </plugins>
     </pluginManagement>

scripts/get_spigot_versions.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright (C) 2011-2022 lishid. All rights reserved.
+# Copyright (C) 2011-2021 lishid. All rights reserved.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,38 +15,36 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 
+# TODO FIGURE OUT AND REMOVE WHEN LESS STRESS
+hacky_versions=("1.16.5-R0.1-SNAPSHOT" "1.17-R0.1-SNAPSHOT")
+for hacky_version in "${hacky_versions[@]}"; do
+  echo "$hacky_version"
+done
+
+exit 0
+
 # Note that this script is designed for use in GitHub Actions, and is not
 # particularly robust nor configurable. Run from project parent directory.
 
-# Use a nameref as a cache - maven evaluation is pretty slow.
-# Re-calling the script and relying on it to handle caching is way easier than passing around info.
-declare -a spigot_versions
-
-# We don't care about concatenation - either it's not null and we handle entries or it's null and we instantiate.
-# shellcheck disable=SC2199
-if [[ ${spigot_versions[@]} ]]; then
-  for spigot_version in "${spigot_versions[@]}"; do
-    echo "$spigot_version"
-  done
-  return
-fi
-
-old_maven_opts=$MAVEN_OPTS
-# Add JVM parameters to allow help plugin access to packages it needs.
-export MAVEN_OPTS="$old_maven_opts --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang.reflect=ALL-UNNAMED --add-opens java.base/java.text=ALL-UNNAMED --add-opens java.desktop/java.awt.font=ALL-UNNAMED"
-
 # Pull Spigot dependency information from Maven.
 # Since we only care about Spigot versions, only check modules in the folder internal.
 readarray -t modules <<< "$(mvn help:evaluate -Dexpression=project.modules -q -DforceStdout -P all | grep -oP '(?<=<string>)(internal/.*)(?=</string>)')"
 
-declare -n versions="spigot_versions"
-
 for module in "${modules[@]}"; do
-  # Get Spigot version.
-  spigot_version=$(mvn help:evaluate -Dexpression=spigot.version -q -DforceStdout -P all -pl "$module")
-  versions+=("$spigot_version")
-  echo "$spigot_version"
-done
+  # Get number of dependencies declared in pom of specified internal module.
+  max_index=$(mvn help:evaluate -Dexpression=project.dependencies -q -DforceStdout -P all -pl "$module" | grep -c "<dependency>")
 
-# Reset JVM parameters
-export MAVEN_OPTS=$old_maven_opts
+  for ((i=0; i < max_index; i++)); do
+    # Get artifactId of dependency.
+    artifact_id=$(mvn help:evaluate -Dexpression=project.dependencies["$i"].artifactId -q -DforceStdout -P all -pl "$module")
+
+    # Ensure dependency is Spigot.
+    if [[ "$artifact_id" == spigot ]]; then
+      # Get Spigot version.
+      spigot_version=$(mvn help:evaluate -Dexpression=project.dependencies["$i"].version -q -DforceStdout -P all -pl "$module")
+      versions+=("$spigot_version")
+      echo "$spigot_version"
+      break
+    fi
+  done
+done

scripts/install_spigot_dependencies.sh

@@ -33,20 +33,15 @@ get_buildtools () {
 readarray -t versions <<< "$(. ./scripts/get_spigot_versions.sh)"
 echo Found Spigot dependencies: "${versions[@]}"
 
-# Install dependencies aside from Spigot prior to running in offline mode.
-# Note that the default SuperPOM declares maven-dependency-plugin 2.8.0.
-# Unfortunately, we run into MDEP-204 and require a version >= 3.1.2.
-mvn org.apache.maven.plugins:maven-dependency-plugin:3.2.0:go-offline -DexcludeArtifactIds=spigot
-
 for version in "${versions[@]}"; do
   set -e
   exit_code=0
-  mvn dependency:get -Dartifact=org.spigotmc:spigot:"$version":remapped-mojang -q -o || exit_code=$?
+  mvn dependency:get -Dartifact=org.spigotmc:spigot:"$version" -q -o || exit_code=$?
   if [ $exit_code -ne 0 ]; then
     echo Installing missing Spigot version "$version"
     revision=${version%%-R*}
     get_buildtools
-    java -jar $buildtools -rev "$revision" --remapped
+    java -jar $buildtools -rev "$revision"
   else
     echo Spigot "$version" is already installed
   fi