add wip gravity

.github/workflows/build-gradle.yml

@@ -28,11 +28,8 @@ jobs:
           cache: ''                          # ← disable Maven/Gradle cache
 
       # 3. Set up Gradle + dependency cache
-      - name: Set up Gradle 8.13
-        uses: gradle/actions/setup-gradle@v4
-        with:
-          gradle-version: "8.13"             # keep the quotes
-          # cache-enabled: true              # default, uploads ~/.gradle
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v5
 
       - name: Generate build number
         id: buildnumber
@@ -40,19 +37,6 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
-      # Temporary tasks so built jar works because PacketEvents won't merge my fixes for their broken fabric support
-      - name: Clone Axionize's PacketEvents Repository
-        run: |
-          git clone -b fix/fabric-events https://github.com/Axionize/packetevents.git packetevents
-          cd packetevents
-          echo "Cloned PacketEvents repository"
-
-      - name: Build and Publish PacketEvents to Maven Local
-        uses: gradle/actions/setup-gradle@v3
-        with:
-          build-root-directory: packetevents
-          arguments: publishToMavenLocal
-
       - name: Update version in build.gradle.kts
         id: update_version
         run: |
@@ -70,12 +54,12 @@ jobs:
           sed -i "s/val snapshot = .*/val snapshot = false/" build.gradle.kts
 
       - name: Build without PE shaded
-        run: gradle build -PshadePE=false -x test
+        run: ./gradlew build -PshadePE=false -x test
         env:
           GITHUB_REPOSITORY: ${{ github.repository }}
 
       - name: Build with PE shaded Gradle
-        run: gradle build -PshadePE=true -x test
+        run: ./gradlew build -PshadePE=true -x test
         env:
           GITHUB_REPOSITORY: ${{ github.repository }}
 
@@ -214,8 +198,10 @@ jobs:
             fabric
 
           game-versions: |
-            1.21.4
-            1.21.5
+            1.21.11
+
+          dependencies: |
+            fabric-api
 
           retry-attempts: 2
           retry-delay: 10000

build.gradle.kts

@@ -2,8 +2,31 @@ import java.io.ByteArrayOutputStream
 
 plugins {
     id("java")
-    id("com.gradleup.shadow") version "8.3.3" apply false
-    id("fabric-loom") version "1.10.5" apply false
+    id("com.gradleup.shadow") version "9.2.2" apply false
+    id("fabric-loom") version "1.14.6" apply false
+}
+
+fun getGitCommitHash(project: Project): String? {
+    // Only try to get the hash if the .git directory exists
+    if (!project.file(".git").isDirectory) {
+        return null
+    }
+    return try {
+        val process = ProcessBuilder("git", "rev-parse", "--short", "HEAD")
+            .redirectOutput(ProcessBuilder.Redirect.PIPE)
+            .redirectError(ProcessBuilder.Redirect.PIPE)
+            .start()
+
+        process.waitFor(5, TimeUnit.SECONDS)
+
+        if (process.exitValue() == 0) {
+            process.inputStream.bufferedReader().readText().trim().takeIf { it.isNotEmpty() }
+        } else {
+            null
+        }
+    } catch (e: Exception) {
+        null
+    }
 }
 
 val fullVersion = "1.3.5"
@@ -23,14 +46,10 @@ allprojects {
         if (!snapshot) {
             return ""
         }
-        var commitHash = ""
-        if (includeHash && file(".git").isDirectory) {
-            val stdout = ByteArrayOutputStream()
-            exec {
-                commandLine("git", "rev-parse", "--short", "HEAD")
-                standardOutput = stdout
-            }
-            commitHash = "+${stdout.toString().trim()}"
+        val commitHash = if (includeHash) {
+            getGitCommitHash(project)?.let { "+$it" } ?: ""
+        } else {
+            ""
         }
         return "$commitHash-SNAPSHOT"
     }
@@ -41,7 +60,8 @@ allprojects {
     ext["githubRepo"] = githubRepo
 
     repositories {
-        mavenLocal()
+//        mavenLocal()
+        maven("https://repo.grim.ac/snapshots")
         mavenCentral()
         maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/")
         maven("https://repo.codemc.io/repository/maven-releases/")
@@ -52,7 +72,6 @@ allprojects {
         }
         maven("https://libraries.minecraft.net/")
         maven("https://maven.neoforged.net/releases")
-        maven("https://repo.codemc.io/repository/maven-snapshots/")
     }
 }
 

bukkit/build.gradle.kts

@@ -40,11 +40,11 @@ dependencies {
 
     shadeThisThing(implementation("org.kohsuke:github-api:1.326")!!)
     if (shadePE) {
-        shadeThisThing(implementation("com.github.retrooper:packetevents-spigot:2.8.0-SNAPSHOT")!!)
+        shadeThisThing(implementation("com.github.retrooper:packetevents-spigot:2.11.1+60a2c34-SNAPSHOT")!!)
     } else {
-        compileOnly("com.github.retrooper:packetevents-spigot:2.8.0-SNAPSHOT")
+        compileOnly("com.github.retrooper:packetevents-spigot:2.11.1+60a2c34-SNAPSHOT")
     }
-    shadeThisThing(implementation("org.incendo:cloud-paper:2.0.0-beta.10")!!)
+    shadeThisThing(implementation("org.incendo:cloud-paper:2.0.0-beta.14")!!)
     shadeThisThing(implementation("org.incendo:cloud-core:2.0.0")!!)
 
     // Required for 1.14.4 support because gson is too old to have JosnParser.parseString()
@@ -60,7 +60,7 @@ tasks.withType<ShadowJar> {
     archiveClassifier.set("")
 
     configurations = listOf(shadeThisThing)
-    isEnableRelocation = true
+    enableAutoRelocation = true
     relocationPrefix = "${project.property("maven_group")}.${project.property("archives_base_name")}.shaded"
 }
 

bukkit/src/main/java/me/caseload/knockbacksync/player/BukkitPlayer.java

@@ -232,4 +232,19 @@ public class BukkitPlayer implements PlatformPlayer {
     public String getClientBrand() {
         return this.clientBrand;
     }
+
+    @Override
+    public boolean isFlying() {
+        return bukkitPlayer.isFlying();
+    }
+
+    @Override
+    public float getSpeed() {
+        return bukkitPlayer.getWalkSpeed();
+    }
+
+    @Override
+    public float getFlyingSpeed() {
+        return bukkitPlayer.getFlySpeed();
+    }
 }

bukkit/src/main/java/me/caseload/knockbacksync/stats/custom/MetricsBukkit.java

@@ -1,5 +1,6 @@
 package me.caseload.knockbacksync.stats.custom;
 
+
 /*
  * This Metrics class was auto-generated and can be copied into your project if you are
  * not using a build tool like Gradle or Maven for dependency management.

common/build.gradle.kts

@@ -13,9 +13,9 @@ dependencies {
 
     // Shaded in or bundled by platform-specific code
     if (shadePE) {
-        implementation("com.github.retrooper:packetevents-api:2.8.0-SNAPSHOT")
+        implementation("com.github.retrooper:packetevents-api:2.11.1+60a2c34-SNAPSHOT")
     } else {
-        compileOnly("com.github.retrooper:packetevents-api:2.8.0-SNAPSHOT")
+        compileOnly("com.github.retrooper:packetevents-api:2.11.1+60a2c34-SNAPSHOT")
     }
 
     implementation("org.yaml:snakeyaml:2.0")

common/src/main/java/me/caseload/knockbacksync/command/subcommand/ToggleOffGroundSubcommand.java

@@ -52,10 +52,10 @@ public class ToggleOffGroundSubcommand implements BuilderCommand {
 
     private void loadConfigSettings() {
         ConfigWrapper configWrapper = Base.INSTANCE.getConfigManager().getConfigWrapper();
-        offGroundSyncEnabled = configWrapper.getBoolean("settings.offground.enabled", true);
+        offGroundSyncEnabled = configWrapper.getBoolean("enable_offground_synchronization", true);
         this.offGroundSyncEnableMessage = configWrapper.getString("messages.offground.enable",
                 "&aSuccessfully enabled offground synchronization.");
         this.offGroundSyncDisableMessage = configWrapper.getString("messages.offground.disable",
                 "&cSuccessfully disabled offground synchronization.");
     }
-}
+}

common/src/main/java/me/caseload/knockbacksync/listener/packetevents/PacketPlayerJoinQuit.java

@@ -11,9 +11,6 @@ import me.caseload.knockbacksync.player.PlatformPlayer;
 import me.caseload.knockbacksync.player.PlayerData;
 import me.caseload.knockbacksync.util.ChatUtil;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.UUID;
 
 public class PacketPlayerJoinQuit extends PacketListenerAbstract {
     @Override

common/src/main/java/me/caseload/knockbacksync/manager/ConfigManager.java

@@ -7,6 +7,7 @@ import me.caseload.knockbacksync.Base;
 import me.caseload.knockbacksync.Platform;
 import me.caseload.knockbacksync.config.YamlConfiguration;
 import me.caseload.knockbacksync.runnable.PingRunnable;
+import me.caseload.knockbacksync.runnable.TickRunnable;
 import me.caseload.knockbacksync.scheduler.AbstractTaskHandle;
 
 import java.io.File;
@@ -39,6 +40,7 @@ public class ConfigManager {
     private String playerDisconnectedWhileExecutingCommand;
 
     private AbstractTaskHandle pingTask;
+    private AbstractTaskHandle tickTask;
 
     private Map<String, Object> config;
     private File configFile;
@@ -114,6 +116,8 @@ public class ConfigManager {
             pingTask = Base.INSTANCE.getScheduler().runTaskTimerAsynchronously(new PingRunnable(), initialDelay, pingTaskRunnableInterval);
         }
 
+        tickTask = Base.INSTANCE.getScheduler().runTaskTimer(new TickRunnable(), 0L, 1L);
+
         notifyUpdate = configWrapper.getBoolean("notify_updates", true);
         autoUpdate = configWrapper.getBoolean("auto_update", true);
         combatTimer = configWrapper.getLong("runnable.timer", 30L);

common/src/main/java/me/caseload/knockbacksync/player/PlatformPlayer.java

@@ -63,4 +63,10 @@ public interface PlatformPlayer {
 
     String getClientBrand();
     // Add more methods as needed
+
+    boolean isFlying();
+
+    float getSpeed();
+
+    float getFlyingSpeed();
 }

common/src/main/java/me/caseload/knockbacksync/player/PlayerData.java

@@ -88,11 +88,14 @@ public class PlayerData {
     @Setter private double knockbackResistanceAttribute = 0.0;
     public PingStrategy pingStrategy; // this is currently shared between all instances, but can be made per-player later
 
+    @Getter private final SimulatedPlayer simulatedPlayer;
+
     public PlayerData(User user, PlatformPlayer platformPlayer) {
         this.uuid = platformPlayer.getUUID();
         this.user = user;
         this.platformPlayer = platformPlayer;
         this.pingStrategy = loadPingStrategy(Base.INSTANCE.getConfigManager());
+        this.simulatedPlayer = new SimulatedPlayer(this);
     }
 
     public double getNotNullPing() {

common/src/main/java/me/caseload/knockbacksync/player/SimulatedPlayer.java

@@ -0,0 +1,62 @@
+package me.caseload.knockbacksync.player;
+
+import com.github.retrooper.packetevents.protocol.potion.PotionEffect;
+import com.github.retrooper.packetevents.protocol.world.BoundingBox;
+import com.github.retrooper.packetevents.util.Vector3d;
+import com.github.retrooper.packetevents.util.Vector3i;
+import lombok.Getter;
+import me.caseload.knockbacksync.Base;
+import me.caseload.knockbacksync.util.data.Vec2d;
+
+import java.util.function.Consumer;
+
+public final class SimulatedPlayer {
+
+    private final PlayerData playerData;
+    private final PlatformPlayer platformPlayer;
+    private Vec2d position;
+    @Getter private double yCoordinate;
+    @Getter private double verticalVelocity;
+    @Getter private BoundingBox boundingBox;
+    @Getter private boolean isOnGround;
+
+    public SimulatedPlayer(PlayerData playerData) {
+        this.playerData = playerData;
+        this.platformPlayer = playerData.getPlatformPlayer();
+        this.position = new Vec2d(platformPlayer.getX(), platformPlayer.getZ());
+        this.yCoordinate = platformPlayer.getY();
+        this.verticalVelocity = platformPlayer.getVelocity().y;
+        this.boundingBox = platformPlayer.getBoundingBox();
+        this.isOnGround = platformPlayer.isOnGround(); // not safe but its only for a single tick
+    }
+
+    public void tick() {
+        Vector3d location = playerData.getPlatformPlayer().getLocation();
+        Vec2d newPosition = new Vec2d(location.x, location.z);
+
+        if (!position.equals(newPosition)) {
+            double dx = newPosition.x - position.x;
+            double dz = newPosition.z - position.z;
+            boundingBox.shift(dx, 0, dz);
+            position = newPosition;
+        }
+
+        if (platformPlayer.isFlying() || platformPlayer.isGliding()) {
+            double newY = platformPlayer.getY();
+            double shiftY = newY - yCoordinate;
+            boundingBox.shift(0, shiftY, 0);
+            yCoordinate = newY;
+            verticalVelocity = platformPlayer.getVelocity().getY();
+            return;
+        }
+
+        verticalVelocity += playerData.getGravityAttribute();
+        verticalVelocity = Math.min(verticalVelocity, 3.92);
+        verticalVelocity *= 0.98;
+
+        double newY = yCoordinate -= verticalVelocity;
+        double shiftY = newY - yCoordinate;
+        boundingBox.shift(0, shiftY, 0);
+        yCoordinate = newY;
+    }
+}

common/src/main/java/me/caseload/knockbacksync/runnable/TickRunnable.java

@@ -0,0 +1,33 @@
+package me.caseload.knockbacksync.runnable;
+
+import com.github.retrooper.packetevents.protocol.player.User;
+import me.caseload.knockbacksync.Base;
+import me.caseload.knockbacksync.manager.PlayerDataManager;
+import me.caseload.knockbacksync.player.PlatformPlayer;
+import me.caseload.knockbacksync.player.PlayerData;
+import me.caseload.knockbacksync.player.SimulatedPlayer;
+
+public class TickRunnable implements Runnable {
+
+    @Override
+    public void run() {
+        if (!Base.INSTANCE.getConfigManager().isToggled())
+            return;
+
+        for (PlatformPlayer player : Base.INSTANCE.getPlatformServer().getOnlinePlayers()) {
+            User user = player.getUser();
+            if (user == null)
+                continue;
+
+            PlayerData playerData = PlayerDataManager.getPlayerData(user);
+            if (playerData == null)
+                continue;
+
+            SimulatedPlayer simulatedPlayer = playerData.getSimulatedPlayer();
+            if (simulatedPlayer == null)
+                continue;
+
+            simulatedPlayer.tick();
+        }
+    }
+}

common/src/main/java/me/caseload/knockbacksync/util/data/Vec2d.java

@@ -0,0 +1,36 @@
+package me.caseload.knockbacksync.util.data;
+
+import java.util.Objects;
+
+public final class Vec2d {
+
+    public final double x;
+    public final double z;
+
+    public Vec2d(double x, double z) {
+        this.x = x;
+        this.z = z;
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object)
+            return true;
+
+        if (!(object instanceof Vec2d))
+            return false;
+
+        Vec2d v = (Vec2d) object;
+        return Double.compare(v.x, x) == 0 && Double.compare(v.z, z) == 0;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(x, z);
+    }
+
+    @Override
+    public String toString() {
+        return "Vec2d(" + x + ", " + z + ")";
+    }
+}

fabric/build.gradle.kts

@@ -1,6 +1,5 @@
 plugins {
     id("fabric-loom")
-    id("com.gradleup.shadow")
 }
 
 loom {
@@ -38,9 +37,9 @@ dependencies {
     modImplementation(fabricApi.module("fabric-lifecycle-events-v1", "${rootProject.property("fabric_version")}"))
     modImplementation(fabricApi.module("fabric-events-interaction-v0", "${rootProject.property("fabric_version")}"))
 
-    include(modImplementation("me.lucko:fabric-permissions-api:0.3.1")!!)
-    include(modImplementation("com.github.retrooper:packetevents-fabric:2.8.0-SNAPSHOT")!!)
-    include(modImplementation("org.incendo:cloud-fabric:2.0.0-beta.10")!!)
+    include(modImplementation("me.lucko:fabric-permissions-api:0.6.1")!!)
+    include(modImplementation("com.github.retrooper:packetevents-fabric:2.11.1+60a2c34-SNAPSHOT")!!)
+    include(modImplementation("org.incendo:cloud-fabric:2.0.0-beta.15")!!)
 
     include(implementation("org.incendo:cloud-minecraft-extras:2.0.0-beta.10")!!)
     include(implementation("org.yaml:snakeyaml:2.0")!!)
@@ -70,8 +69,8 @@ tasks.processResources {
     filesMatching("fabric.mod.json") {
         expand(
             "version" to project.version,
-            "minecraft_version" to rootProject.property("minecraft_version"),
-            "loader_version" to rootProject.property("loader_version")
+            "minecraft_version" to rootProject.property("minecraft_version")!!,
+            "loader_version" to rootProject.property("loader_version")!!
         )
     }
 }

fabric/src/main/java/me/caseload/knockbacksync/mixin/EntityTrackerEntryMixin.java

@@ -0,0 +1,59 @@
+package me.caseload.knockbacksync.mixin;
+
+import me.caseload.knockbacksync.callback.PlayerVelocityEvent;
+import net.minecraft.entity.Entity;
+import net.minecraft.server.network.EntityTrackerEntry;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.math.Vec3d;
+import org.objectweb.asm.Opcodes;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(EntityTrackerEntry.class)
+public class EntityTrackerEntryMixin {
+
+    @Shadow @Final private Entity entity;
+
+    // We inject exactly where 'this.entity.knockedBack = false' is about to happen.
+    @Inject(method = "tick",
+            at = @At(value = "FIELD",
+                    target = "Lnet/minecraft/entity/Entity;knockedBack:Z",
+                    opcode = Opcodes.PUTFIELD),
+            cancellable = true)
+    private void onKnockbackSync(CallbackInfo ci) {
+        // This check ensures we are in the "if (entity.knockedBack)" block
+        // and operating on a Player.
+        if (this.entity instanceof ServerPlayerEntity serverPlayer) {
+
+            // 1. Capture the velocity CURRENTLY on the player
+            Vec3d currentVelocity = serverPlayer.getVelocity();
+
+            // 2. Fire the event
+            ActionResult result = PlayerVelocityEvent.EVENT.invoker().onVelocityChange(serverPlayer, currentVelocity);
+
+            if (result == ActionResult.FAIL) {
+                // CASE: CANCELLED
+                // We want to STOP the packet from sending.
+                // We also want to keep 'knockedBack' as true (technically),
+                // effectively acting like the block never happened.
+                ci.cancel();
+            }
+            else if (result == ActionResult.SUCCESS) {
+                // CASE: MODIFIED
+                // The event handler has already updated the player's velocity:
+                // player.setVelocity(newVel);
+
+                // We do NOT cancel. We let Vanilla proceed.
+                // Vanilla will:
+                // 1. Set knockedBack = false;
+                // 2. Create a NEW packet reading the current velocity (which is now your custom velocity).
+                // 3. Send it.
+            }
+        }
+    }
+}

fabric/src/main/java/me/caseload/knockbacksync/mixin/PlayerMixin.java

@@ -14,23 +14,50 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(PlayerEntity.class)
 public class PlayerMixin {
-    @Inject(method = "attack", at = @At(value = "INVOKE", target = "Lnet/minecraft/network/packet/s2c/play/EntityVelocityUpdateS2CPacket;<init>(Lnet/minecraft/entity/Entity;)V"), cancellable = true)
-    private void onAttack(Entity target, CallbackInfo ci) {
-        if (target instanceof ServerPlayerEntity serverPlayer && target.velocityModified) {
-            Vec3d velocity = target.getVelocity();
 
-            ActionResult result = PlayerVelocityEvent.EVENT.invoker().onVelocityChange(serverPlayer, velocity);
+    @Inject(method = "knockbackTarget",
+            at = @At(value = "INVOKE",
+                    target = "Lnet/minecraft/server/network/ServerPlayNetworkHandler;sendPacket(Lnet/minecraft/network/packet/Packet;)V"),
+            cancellable = true)
+    private void onKnockback(Entity target, float strength, Vec3d playerTargetVelocity, CallbackInfo ci) {
+        if (target instanceof ServerPlayerEntity serverPlayer && target.knockedBack) {
+
+            // 1. Get the "Proposed" Velocity (The knockback calculated lines above)
+            Vec3d proposedVelocity = target.getVelocity();
+
+            // 2. Fire the Event
+            ActionResult result = PlayerVelocityEvent.EVENT.invoker().onVelocityChange(serverPlayer, proposedVelocity);
 
             if (result == ActionResult.FAIL) {
-                target.velocityModified = false;
-                ci.cancel(); // Prevent sending the velocity packet
-            } else if (result == ActionResult.SUCCESS) {
-                // Currently unnecessary since we do this in the handler, will move later
-                target.setVelocity(velocity);
-                serverPlayer.networkHandler.sendPacket(new EntityVelocityUpdateS2CPacket(target));
-                target.velocityModified = false;
-                ci.cancel(); // Prevent sending the original velocity packet
+                // --- REPLICATING PAPER: CANCELLED ---
+                // In Paper: if (event.isCancelled()) { cancelled = true; }
+                // In Paper: if (!cancelled) { sendPacket; cleanup; }
+
+                // So, if cancelled, we stop EVERYTHING. We do not send packet, we do not reset velocity.
+                ci.cancel();
+                return;
             }
+
+            if (result == ActionResult.SUCCESS) {
+                // --- REPLICATING PAPER: MODIFIED ---
+                // In Paper: if (!velocity.equals(event.getVelocity())) { player.setVelocity(...) }
+                // In Paper: if (!cancelled) { sendPacket; setDeltaMovement(currentMovement); }
+
+                // 1. The event listener should have already set the new velocity on the entity.
+                // 2. We must send a NEW packet (because the one on the stack is old).
+                serverPlayer.networkHandler.sendPacket(new EntityVelocityUpdateS2CPacket(target));
+
+                // 3. Replicate the Cleanup: Paper resets velocity to 'currentMovement' (playerTargetVelocity)
+                // This prevents the server from thinking the player is flying, maintaining Client Authority.
+                target.knockedBack = false;
+                target.setVelocity(playerTargetVelocity);
+
+                // 4. Cancel the original logic so Vanilla doesn't send the old packet or do double cleanup.
+                ci.cancel();
+            }
+
+            // CASE: PASS
+            // Vanilla behaves normally (Sends packet, does cleanup).
         }
     }
-}
+}

fabric/src/main/java/me/caseload/knockbacksync/mixin/ServerEntityMixin.java

@@ -1,59 +0,0 @@
-package me.caseload.knockbacksync.mixin;
-
-import me.caseload.knockbacksync.callback.PlayerVelocityEvent;
-import net.minecraft.entity.Entity;
-import net.minecraft.server.network.EntityTrackerEntry;
-import net.minecraft.server.network.ServerPlayerEntity;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.math.Vec3d;
-import org.spongepowered.asm.mixin.Final;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-
-@Mixin(EntityTrackerEntry.class)
-public class ServerEntityMixin {
-
-    @Shadow
-    @Final
-    private Entity entity;
-
-    // Velocity event
-    @Inject(method = "tick", at = @At(value = "FIELD", target = "Lnet/minecraft/entity/Entity;velocityModified:Z", ordinal = 1), cancellable = true)
-    private void onSendChanges(CallbackInfo ci) {
-        if (this.entity.velocityModified && this.entity instanceof ServerPlayerEntity player) {
-            Vec3d velocity = player.getVelocity();
-
-            ActionResult result = PlayerVelocityEvent.EVENT.invoker().onVelocityChange(player, velocity);
-
-            if (result == ActionResult.FAIL) {
-                this.entity.velocityModified = false;
-                ci.cancel();
-            } else if (result == ActionResult.SUCCESS) {
-                // Currently unnecessary since we do this in the handler, will move later
-                player.setVelocity(velocity);
-            }
-        }
-    }
-
-    // Custom tick intervals
-//    @Shadow
-//    private int updateInterval;
-
-//    @Accessor("entity")
-//    Entity getEntity() {
-//        return null;
-//    }
-
-//    @Invoker("sendChanges")
-//    void invokeSendChanges() {
-//
-//    }
-
-//    @Override
-//    public void setUpdateInterval(int interval) {
-//        this.updateInterval = interval;
-//    }
-}

fabric/src/main/java/me/caseload/knockbacksync/player/FabricPlayer.java

@@ -91,7 +91,7 @@ public class FabricPlayer implements PlatformPlayer {
 
     @Override
     public PlatformWorld getWorld() {
-        return new FabricWorld(fabricPlayer.getWorld());
+        return new FabricWorld(fabricPlayer.getEntityWorld());
     }
 
     @Override
@@ -117,7 +117,7 @@ public class FabricPlayer implements PlatformPlayer {
 
     @Override
     public int getMainHandKnockbackLevel() {
-        RegistryEntry<Enchantment> knockbackEntry = fabricPlayer.getWorld().getRegistryManager().getOrThrow(RegistryKeys.ENCHANTMENT).getOrThrow(Enchantments.KNOCKBACK);
+        RegistryEntry<Enchantment> knockbackEntry = fabricPlayer.getEntityWorld().getRegistryManager().getOrThrow(RegistryKeys.ENCHANTMENT).getOrThrow(Enchantments.KNOCKBACK);
         return EnchantmentHelper.getLevel(knockbackEntry, fabricPlayer.getMainHandStack());
     }
 
@@ -131,7 +131,7 @@ public class FabricPlayer implements PlatformPlayer {
         fabricPlayer.setVelocity(adjustedVelocity.x, adjustedVelocity.y, adjustedVelocity.z);
         // TODO
         // fix paper-ism? for some reason setVelocity() in paper marks the entity as hurt marked every time its called?
-        fabricPlayer.velocityModified = true;
+        fabricPlayer.velocityDirty = true;
     }
 
     @Override
@@ -171,4 +171,19 @@ public class FabricPlayer implements PlatformPlayer {
     public String getClientBrand() {
         return this.clientBrand;
     }
+
+    @Override
+    public boolean isFlying() {
+        return this.fabricPlayer.getAbilities().flying;
+    }
+
+    @Override
+    public float getSpeed() {
+        return this.fabricPlayer.getAbilities().getWalkSpeed();
+    }
+
+    @Override
+    public float getFlyingSpeed() {
+        return this.fabricPlayer.getAbilities().getFlySpeed();
+    }
 }

fabric/src/main/java/me/caseload/knockbacksync/util/CustomUpdateIntervals.java

@@ -29,7 +29,7 @@ public class CustomUpdateIntervals {
         for (Entity entity : level.iterateEntities()) {
             String entityType = entity.getType().getRegistryEntry().getIdAsString();
             if (entityIntervals.containsKey(entityType)) {
-                ServerChunkLoadingManager.EntityTracker serverEntity = ((ServerChunkManager) entity.getWorld().getChunkManager()).chunkLoadingManager.entityTrackers.get(entity.getId());
+                ServerChunkLoadingManager.EntityTracker serverEntity = ((ServerChunkManager) entity.getEntityWorld().getChunkManager()).chunkLoadingManager.entityTrackers.get(entity.getId());
                 if (serverEntity != null) {
                     ((UpdateIntervalAccessor) serverEntity).setUpdateInterval(entityIntervals.get(entityType));
                 }

fabric/src/main/resources/fabric.mod.json

@@ -22,7 +22,8 @@
   ],
   "depends": {
     "fabricloader": ">=0.15.11",
-    "fabric": "*",
+    "fabric-lifecycle-events-v1": "*",
+    "fabric-events-interaction-v0": "*",
     "minecraft": "~${minecraft_version}",
     "packetevents": "*"
   },

fabric/src/main/resources/knockbacksync.mixins.json

@@ -5,8 +5,8 @@
   "compatibilityLevel": "JAVA_21",
   "mixins": [
     "ChunkMapMixin",
+    "EntityTrackerEntryMixin",
     "PlayerMixin",
-    "ServerEntityMixin",
     "TickRateManagerMixin"
   ],
   "injectors": {

gradle.properties

@@ -4,8 +4,8 @@ org.gradle.parallel=true
 
 # Fabric Properties
 # check these on https://modmuss50.me/fabric.html
-minecraft_version=1.21.5
-yarn_mappings=1.21.5+build.1:v2
+minecraft_version=1.21.11
+yarn_mappings=1.21.11+build.3:v2
 loader_version=0.16.13
 
 # Mod Properties
@@ -14,6 +14,6 @@ archives_base_name=knockbacksync
 
 # Dependencies
 # check this on https://modmuss50.me/fabric.html
-fabric_version=0.121.0+1.21.5
+fabric_version=0.140.0+1.21.11
 
 githubRepo=CASELOAD7000/knockback-sync

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME