Codebase cleanup

Signed-off-by: Florian Reuth <git@florianreuth.de>

common/src/main/java/com/viaversion/viarewind/ViaRewindConfig.java

@@ -55,8 +55,8 @@ public class ViaRewindConfig extends Config implements com.viaversion.viarewind.
         cooldownIndicator = CooldownIndicator.valueOf(getString("cooldown-indicator", "TITLE").toUpperCase());
         replaceAdventureMode = getBoolean("replace-adventure", false);
         replaceParticles = getBoolean("replace-particles", false);
-        maxBookPages = getInt("max-book-pages", 100);
-        maxBookPageSize = getInt("max-book-page-length", 5000);
+        maxBookPages = getInt("end-book-pages", 100);
+        maxBookPageSize = getInt("end-book-page-length", 5000);
         emulateWorldBorder = getBoolean("emulate-world-border", true);
         alwaysShowOriginalMobName = getBoolean("always-show-original-mob-name", true);
         worldBorderParticle = getString("world-border-particle", "fireworksSpark");

common/src/main/java/com/viaversion/viarewind/api/ViaRewindConfig.java

@@ -54,14 +54,14 @@ public interface ViaRewindConfig extends Config {
     /**
      * Max amount of pages for written books before a client gets kicked
      *
-     * @return the max amount of pages
+     * @return the end amount of pages
      */
     int getMaxBookPages();
 
     /**
      * Max amount of characters in the json (!) string of a book page before a client gets kicked
      *
-     * @return the max amount of characters
+     * @return the end amount of characters
      */
     int getMaxBookPageSize();
 

common/src/main/java/com/viaversion/viarewind/api/data/RewindMappingData.java

@@ -22,7 +22,7 @@ import com.viaversion.viabackwards.api.data.BackwardsMappingData;
 import com.viaversion.viarewind.ViaRewind;
 import java.util.logging.Logger;
 
-public class RewindMappingData extends BackwardsMappingData {
+public final class RewindMappingData extends BackwardsMappingData {
 
     public RewindMappingData(String unmappedVersion, String mappedVersion) {
         super(unmappedVersion, mappedVersion);
@@ -37,4 +37,5 @@ public class RewindMappingData extends BackwardsMappingData {
     protected CompoundTag readMappingsFile(String name) {
         return RewindMappingDataLoader.INSTANCE.loadNBTFromDir(name);
     }
+
 }

common/src/main/java/com/viaversion/viarewind/api/data/RewindMappingDataLoader.java

@@ -22,7 +22,7 @@ import com.viaversion.viarewind.ViaRewind;
 import java.io.File;
 import java.util.logging.Logger;
 
-public class RewindMappingDataLoader extends BackwardsMappingDataLoader {
+public final class RewindMappingDataLoader extends BackwardsMappingDataLoader {
 
     public static final RewindMappingDataLoader INSTANCE = new RewindMappingDataLoader();
 
@@ -30,7 +30,6 @@ public class RewindMappingDataLoader extends BackwardsMappingDataLoader {
         super(RewindMappingDataLoader.class, "assets/viarewind/data/");
     }
 
-
     @Override
     public Logger getLogger() {
         return ViaRewind.getPlatform().getLogger();
@@ -40,4 +39,5 @@ public class RewindMappingDataLoader extends BackwardsMappingDataLoader {
     public File getDataFolder() {
         return ViaRewind.getPlatform().getDataFolder();
     }
+
 }

common/src/main/java/com/viaversion/viarewind/api/minecraft/entitydata/EntityDataTypes1_7_6_10.java

@@ -23,6 +23,7 @@ import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.Types;
 
 public enum EntityDataTypes1_7_6_10 implements EntityDataType {
+
     BYTE(0, Types.BYTE),
     SHORT(1, Types.SHORT),
     INT(2, Types.INT),
@@ -34,12 +35,12 @@ public enum EntityDataTypes1_7_6_10 implements EntityDataType {
     private final int typeID;
     private final Type<?> type;
 
-    EntityDataTypes1_7_6_10(int typeID, Type<?> type) {
+    EntityDataTypes1_7_6_10(final int typeID, final Type<?> type) {
         this.typeID = typeID;
         this.type = type;
     }
 
-    public static EntityDataTypes1_7_6_10 byId(int id) {
+    public static EntityDataTypes1_7_6_10 byId(final int id) {
         return values()[id];
     }
 
@@ -52,4 +53,5 @@ public enum EntityDataTypes1_7_6_10 implements EntityDataType {
     public Type<?> type() {
         return this.type;
     }
+
 }

common/src/main/java/com/viaversion/viarewind/api/minecraft/math/Box.java

@@ -17,20 +17,8 @@
  */
 package com.viaversion.viarewind.api.minecraft.math;
 
-public class AABB {
-    Vector3d min;
-    Vector3d max;
+import com.viaversion.viaversion.api.minecraft.Vector3d;
 
-    public AABB(Vector3d min, Vector3d max) {
-        this.min = min;
-        this.max = max;
-    }
+public record Box(Vector3d start, Vector3d end) {
 
-    public Vector3d getMin() {
-        return this.min;
-    }
-
-    public Vector3d getMax() {
-        return this.max;
-    }
 }

common/src/main/java/com/viaversion/viarewind/api/minecraft/math/Ray3d.java

@@ -1,36 +0,0 @@
-/*
- * This file is part of ViaRewind - https://github.com/ViaVersion/ViaRewind
- * Copyright (C) 2018-2026 ViaVersion and contributors
- *
- * 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, either version 3 of the License, or
- * (at your option) any later version.
- *
- * 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.viaversion.viarewind.api.minecraft.math;
-
-public class Ray3d {
-    Vector3d start;
-    Vector3d dir;
-
-    public Ray3d(Vector3d start, Vector3d dir) {
-        this.start = start;
-        this.dir = dir;
-    }
-
-    public Vector3d getStart() {
-        return this.start;
-    }
-
-    public Vector3d getDir() {
-        return this.dir;
-    }
-}

common/src/main/java/com/viaversion/viarewind/api/minecraft/math/RayTracing.java

@@ -17,42 +17,58 @@
  */
 package com.viaversion.viarewind.api.minecraft.math;
 
-public class RayTracing {
+import com.viaversion.viaversion.api.minecraft.Vector3d;
 
-    public static Vector3d trace(Ray3d ray, AABB aabb, double distance) {
-        Vector3d invDir = new Vector3d(1f / ray.dir.x, 1f / ray.dir.y, 1f / ray.dir.z);
+public final class RayTracing {
 
-        boolean signDirX = invDir.x < 0;
-        boolean signDirY = invDir.y < 0;
-        boolean signDirZ = invDir.z < 0;
+    public static Vector3d trace(final Box ray, final Box box, final double distance) {
+        final Vector3d invDir = new Vector3d(1f / ray.end().x(), 1f / ray.end().y(), 1f / ray.end().z());
 
-        Vector3d bbox = signDirX ? aabb.max : aabb.min;
-        double tmin = (bbox.x - ray.start.x) * invDir.x;
-        bbox = signDirX ? aabb.min : aabb.max;
-        double tmax = (bbox.x - ray.start.x) * invDir.x;
-        bbox = signDirY ? aabb.max : aabb.min;
-        double tymin = (bbox.y - ray.start.y) * invDir.y;
-        bbox = signDirY ? aabb.min : aabb.max;
-        double tymax = (bbox.y - ray.start.y) * invDir.y;
+        final boolean signDirX = invDir.x() < 0;
+        final boolean signDirY = invDir.y() < 0;
+        final boolean signDirZ = invDir.z() < 0;
 
-        if (tmin > tymax || tymin > tmax) return null;
+        Vector3d boundingBox = signDirX ? box.end() : box.start();
+        double tmin = (boundingBox.x() - ray.start().x()) * invDir.x();
+        boundingBox = signDirX ? box.start() : box.end();
+        double tmax = (boundingBox.x() - ray.start().x()) * invDir.x();
+        boundingBox = signDirY ? box.end() : box.start();
+        final double tymin = (boundingBox.y() - ray.start().y()) * invDir.y();
+        boundingBox = signDirY ? box.start() : box.end();
+        final double tymax = (boundingBox.y() - ray.start().y()) * invDir.y();
 
-        if (tymin > tmin) tmin = tymin;
+        if (tmin > tymax || tymin > tmax) {
+            return null;
+        }
 
-        if (tymax < tmax) tmax = tymax;
+        if (tymin > tmin) {
+            tmin = tymin;
+        }
+        if (tymax < tmax) {
+            tmax = tymax;
+        }
 
-        bbox = signDirZ ? aabb.max : aabb.min;
-        double tzmin = (bbox.z - ray.start.z) * invDir.z;
-        bbox = signDirZ ? aabb.min : aabb.max;
-        double tzmax = (bbox.z - ray.start.z) * invDir.z;
+        boundingBox = signDirZ ? box.end() : box.start();
+        double tzmin = (boundingBox.z() - ray.start().z()) * invDir.z();
+        boundingBox = signDirZ ? box.start() : box.end();
+        double tzmax = (boundingBox.z() - ray.start().z()) * invDir.z();
 
-        if (tmin > tzmax || tzmin > tmax) return null;
+        if (tmin > tzmax || tzmin > tmax) {
+            return null;
+        }
 
-        if (tzmin > tmin) tmin = tzmin;
+        if (tzmin > tmin) {
+            tmin = tzmin;
+        }
+        if (tzmax < tmax) {
+            tmax = tzmax;
+        }
 
-        if (tzmax < tmax) tmax = tzmax;
+        if (tmin <= distance && tmax > 0) {
+            // ray.start().clone().add(ray.dir().clone().normalize().multiply(tmin))
+        }
 
-        return tmin <= distance && tmax > 0 ? ray.start.clone().add(ray.dir.clone().normalize().multiply(tmin)) : null;
+        return null;
     }
 
 }

common/src/main/java/com/viaversion/viarewind/api/minecraft/math/Vector3d.java

@@ -1,128 +0,0 @@
-/*
- * This file is part of ViaRewind - https://github.com/ViaVersion/ViaRewind
- * Copyright (C) 2018-2026 ViaVersion and contributors
- *
- * 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, either version 3 of the License, or
- * (at your option) any later version.
- *
- * 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.viaversion.viarewind.api.minecraft.math;
-
-import java.util.Objects;
-
-public class Vector3d {
-    double x, y, z;
-
-    public Vector3d(double x, double y, double z) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
-    }
-
-    public Vector3d() {
-    }
-
-    public void set(Vector3d vec) {
-        this.x = vec.x;
-        this.y = vec.y;
-        this.z = vec.z;
-    }
-
-    public Vector3d set(double x, double y, double z) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
-        return this;
-    }
-
-    public Vector3d multiply(double a) {
-        this.x *= a;
-        this.y *= a;
-        this.z *= a;
-        return this;
-    }
-
-    public Vector3d add(Vector3d vec) {
-        this.x += vec.x;
-        this.y += vec.y;
-        this.z += vec.z;
-        return this;
-    }
-
-    public Vector3d substract(Vector3d vec) {
-        this.x -= vec.x;
-        this.y -= vec.y;
-        this.z -= vec.z;
-        return this;
-    }
-
-    public double length() {
-        return Math.sqrt(lengthSquared());
-    }
-
-    public double lengthSquared() {
-        return this.x * this.x + this.y * this.y + this.z * this.z;
-    }
-
-    public Vector3d normalize() {
-        double length = length();
-        multiply(1.0 / length);
-        return this;
-    }
-
-    @Override
-    public Vector3d clone() {
-        return new Vector3d(this.x, this.y, this.z);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        Vector3d vector3d = (Vector3d) o;
-        return Double.compare(vector3d.x, x) == 0 && Double.compare(vector3d.y, y) == 0 && Double.compare(vector3d.z, z) == 0;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(x, y, z);
-    }
-
-    @Override
-    public String toString() {
-        return "Vector3d{" + "x=" + x + ", y=" + y + ", z=" + z + '}';
-    }
-
-    public double getX() {
-        return this.x;
-    }
-
-    public void setX(double x) {
-        this.x = x;
-    }
-
-    public double getY() {
-        return this.y;
-    }
-
-    public void setY(double y) {
-        this.y = y;
-    }
-
-    public double getZ() {
-        return this.z;
-    }
-
-    public void setZ(double z) {
-        this.z = z;
-    }
-}

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/Protocol1_8To1_7_6_10.java

@@ -130,7 +130,6 @@ public class Protocol1_8To1_7_6_10 extends BackwardsProtocol<ClientboundPackets1
         connection.put(new GameProfileStorage(connection));
         connection.put(new ScoreboardTracker(connection));
         connection.put(new CompressionStatusTracker(connection));
-        connection.put(new WorldBorderEmulator(connection));
     }
 
     @Override

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/data/VirtualHologramEntity.java

@@ -18,14 +18,14 @@
 package com.viaversion.viarewind.protocol.v1_8to1_7_6_10.data;
 
 import com.viaversion.viarewind.api.minecraft.entitydata.EntityDataTypes1_7_6_10;
-import com.viaversion.viarewind.api.minecraft.math.AABB;
-import com.viaversion.viarewind.api.minecraft.math.Vector3d;
+import com.viaversion.viarewind.api.minecraft.math.Box;
 import com.viaversion.viarewind.api.type.RewindTypes;
 import com.viaversion.viarewind.protocol.v1_7_6_10to1_7_2_5.packet.ClientboundPackets1_7_2_5;
 import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.Protocol1_8To1_7_6_10;
 import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.rewriter.EntityPacketRewriter1_8;
 import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.storage.EntityTracker1_8;
 import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.Vector3d;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_8;
 import com.viaversion.viaversion.api.minecraft.entitydata.EntityData;
 import com.viaversion.viaversion.api.minecraft.entitydata.types.EntityDataTypes1_8;
@@ -328,14 +328,14 @@ public class VirtualHologramEntity {
         }
     }
 
-    public AABB getBoundingBox() {
+    public Box getBoundingBox() {
         final double width = this.small ? 0.25 : 0.5;
         final double height = this.small ? 0.9875 : 1.975;
 
         final Vector3d min = new Vector3d(this.locX - width / 2, this.locY, this.locZ - width / 2);
         final Vector3d max = new Vector3d(this.locX + width / 2, this.locY + height, this.locZ + width / 2);
 
-        return new AABB(min, max);
+        return new Box(min, max);
     }
 
     private int additionalEntityId() {

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/rewriter/PlayerPacketRewriter1_8.java

@@ -21,10 +21,8 @@ import com.viaversion.nbt.tag.CompoundTag;
 import com.viaversion.nbt.tag.ListTag;
 import com.viaversion.nbt.tag.StringTag;
 import com.viaversion.viarewind.ViaRewind;
-import com.viaversion.viarewind.api.minecraft.math.AABB;
-import com.viaversion.viarewind.api.minecraft.math.Ray3d;
+import com.viaversion.viarewind.api.minecraft.math.Box;
 import com.viaversion.viarewind.api.minecraft.math.RayTracing;
-import com.viaversion.viarewind.api.minecraft.math.Vector3d;
 import com.viaversion.viarewind.api.type.RewindTypes;
 import com.viaversion.viarewind.protocol.v1_7_6_10to1_7_2_5.packet.ClientboundPackets1_7_2_5;
 import com.viaversion.viarewind.protocol.v1_7_6_10to1_7_2_5.packet.ServerboundPackets1_7_2_5;
@@ -146,8 +144,8 @@ public class PlayerPacketRewriter1_8 extends RewriterBase<Protocol1_8To1_7_6_10>
                         return;
                     }
 
-                    // On 1.8 clients when the player respawns it keeps all metadata and sets player back to max HP
-                    // 1.7 clients do not copy the metadata but do set the health to max HP
+                    // On 1.8 clients when the player respawns it keeps all metadata and sets player back to end HP
+                    // 1.7 clients do not copy the metadata but do set the health to end HP
                     // to match the same client logic we remove the HP metadata as otherwise the client would be set to their old HP before respawning
                     final List<EntityData> entityDataList = new ArrayList<>(tracker.getEntityData());
                     entityDataList.removeIf(entityData -> entityData.id() == 6);
@@ -541,20 +539,20 @@ public class PlayerPacketRewriter1_8 extends RewriterBase<Protocol1_8To1_7_6_10>
                     }
 
                     wrapper.set(Types.VAR_INT, 0, entityId);
-                    final AABB boundingBox = tracker.getHolograms().get(entityId).getBoundingBox();
+                    final Box boundingBox = tracker.getHolograms().get(entityId).getBoundingBox();
 
                     Vector3d pos = new Vector3d(position.getPosX(), position.getPosY() + 1.8, position.getPosZ());
                     double yaw = Math.toRadians(position.yaw);
                     double pitch = Math.toRadians(position.pitch);
 
                     Vector3d dir = new Vector3d(-Math.cos(pitch) * Math.sin(yaw), -Math.sin(pitch), Math.cos(pitch) * Math.cos(yaw));
-                    Ray3d ray = new Ray3d(pos, dir);
+                    Rotation ray = new Rotation(pos, dir);
                     Vector3d intersection = RayTracing.trace(ray, boundingBox, 5.0);
 
                     if (intersection == null) {
                         return;
                     }
-                    intersection.substract(boundingBox.getMin());
+                    intersection.substract(boundingBox.start());
 
                     wrapper.set(Types.VAR_INT, 1, 2);
                     wrapper.write(Types.FLOAT, (float) intersection.getX());

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/rewriter/WorldPacketRewriter1_8.java

@@ -24,6 +24,7 @@ import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.Protocol1_8To1_7_6_10;
 import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.data.Particles1_8;
 import com.viaversion.viarewind.protocol.v1_8to1_7_6_10.storage.WorldBorderEmulator;
 import com.viaversion.viarewind.utils.ChatUtil;
+import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.api.minecraft.BlockChangeRecord;
 import com.viaversion.viaversion.api.minecraft.ClientWorld;
 import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
@@ -224,12 +225,7 @@ public class WorldPacketRewriter1_8 extends RewriterBase<Protocol1_8To1_7_6_10>
                         columnData[i + 3] = data[column + i * columns];
                     }
 
-                    final PacketWrapper mapData = PacketWrapper.create(ClientboundPackets1_8.MAP_ITEM_DATA, wrapper.user());
-                    mapData.write(Types.VAR_INT, id); // map id
-                    mapData.write(Types.SHORT, (short) columnData.length); // data length
-                    mapData.write(new FixedByteArrayType(columnData.length), columnData); // data
-
-                    mapData.send(Protocol1_8To1_7_6_10.class);
+                    sendMapItemData(wrapper.user(), id, columnData);
                 }
             }
 
@@ -242,12 +238,7 @@ public class WorldPacketRewriter1_8 extends RewriterBase<Protocol1_8To1_7_6_10>
                     iconData[i * 3 + 3] = icons[i * 4 + 2];
                 }
 
-                final PacketWrapper mapData = PacketWrapper.create(ClientboundPackets1_8.MAP_ITEM_DATA, wrapper.user());
-                mapData.write(Types.VAR_INT, id); // map id
-                mapData.write(Types.SHORT, (short) iconData.length); // data length
-                mapData.write(new FixedByteArrayType(iconData.length), iconData); // data
-
-                mapData.send(Protocol1_8To1_7_6_10.class);
+                sendMapItemData(wrapper.user(), id, iconData);
             }
 
             // Update scale
@@ -259,35 +250,55 @@ public class WorldPacketRewriter1_8 extends RewriterBase<Protocol1_8To1_7_6_10>
             mapData.send(Protocol1_8To1_7_6_10.class);
         });
 
-        protocol.registerClientbound(ClientboundPackets1_8.BLOCK_ENTITY_DATA, new PacketHandlers() {
-            @Override
-            public void register() {
-                map(Types.BLOCK_POSITION1_8, RewindTypes.SHORT_POSITION); // position
-                map(Types.UNSIGNED_BYTE); // action
-                map(Types.NAMED_COMPOUND_TAG, RewindTypes.COMPRESSED_NBT); // nbt
-            }
+        protocol.registerClientbound(ClientboundPackets1_8.BLOCK_ENTITY_DATA, wrapper -> {
+            wrapper.passthroughAndMap(Types.BLOCK_POSITION1_8, RewindTypes.SHORT_POSITION); // Position
+            wrapper.passthrough(Types.UNSIGNED_BYTE); // Action
+            wrapper.passthroughAndMap(Types.NAMED_COMPOUND_TAG, RewindTypes.COMPRESSED_NBT); // Tag
         });
 
         protocol.cancelClientbound(ClientboundPackets1_8.CHANGE_DIFFICULTY);
 
         protocol.registerClientbound(ClientboundPackets1_8.SET_BORDER, null, wrapper -> {
-            final WorldBorderEmulator emulator = wrapper.user().get(WorldBorderEmulator.class);
             wrapper.cancel();
-
             final int action = wrapper.read(Types.VAR_INT);
+            if (action == 3) { // initialize
+                final double x = wrapper.read(Types.DOUBLE);
+                final double z = wrapper.read(Types.DOUBLE);
+                final double oldRadius = wrapper.read(Types.DOUBLE);
+                final double newRadius = wrapper.read(Types.DOUBLE);
+                final long speed = wrapper.read(Types.VAR_LONG);
+
+                wrapper.user().put(new WorldBorderEmulator(wrapper.user(), x, z, oldRadius, newRadius, speed));
+            }
+
+            final WorldBorderEmulator emulator = wrapper.user().get(WorldBorderEmulator.class);
+            if (emulator == null) {
+                return;
+            }
+
             if (action == 0) { // set size
-                emulator.setSize(wrapper.read(Types.DOUBLE)); // radius
-            } else if (action == 1) { // lerp size
-                emulator.lerpSize(wrapper.read(Types.DOUBLE), wrapper.read(Types.DOUBLE), wrapper.read(Types.VAR_LONG)); // old radius, new radius, speed
+                final double radius = wrapper.read(Types.DOUBLE);
+                emulator.setSize(radius);
+            } else if (action == 1) { // delta size
+                final double oldRadius = wrapper.read(Types.DOUBLE);
+                final double newRadius = wrapper.read(Types.DOUBLE);
+                final long speed = wrapper.read(Types.VAR_LONG);
+                emulator.updateDeltaTime(oldRadius, newRadius, speed);
             } else if (action == 2) { // set center
-                emulator.setCenter(wrapper.read(Types.DOUBLE), wrapper.read(Types.DOUBLE)); // x, z
-            } else if (action == 3) { // initialize
-                emulator.init(
-                    wrapper.read(Types.DOUBLE), wrapper.read(Types.DOUBLE), // x, z
-                    wrapper.read(Types.DOUBLE), wrapper.read(Types.DOUBLE), // old radius, new radius
-                    wrapper.read(Types.VAR_LONG) // speed
-                );
+                final double x = wrapper.read(Types.DOUBLE);
+                final double z = wrapper.read(Types.DOUBLE);
+                emulator.setCenter(x, z);
             }
         });
     }
+
+    private void sendMapItemData(final UserConnection connection, final int id, final byte[] columnData) {
+        final PacketWrapper mapData = PacketWrapper.create(ClientboundPackets1_8.MAP_ITEM_DATA, connection);
+        mapData.write(Types.VAR_INT, id); // map id
+        mapData.write(Types.SHORT, (short) columnData.length); // data length
+        mapData.write(new FixedByteArrayType(columnData.length), columnData); // data
+
+        mapData.send(Protocol1_8To1_7_6_10.class);
+    }
+
 }

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/storage/ScoreboardTracker.java

@@ -30,7 +30,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
-public class ScoreboardTracker extends StoredObject {
+public final class ScoreboardTracker extends StoredObject {
+
     private final HashMap<String, List<String>> teams = new HashMap<>();
     private final HashSet<String> objectives = new HashSet<>();
     private final HashMap<String, ScoreTeam> scoreTeams = new HashMap<>();
@@ -40,76 +41,74 @@ public class ScoreboardTracker extends StoredObject {
     private final HashMap<String, String> teamNameTagVisibilities = new HashMap<>();
     private String colorIndependentSidebar;
 
-    public ScoreboardTracker(UserConnection user) {
+    public ScoreboardTracker(final UserConnection user) {
         super(user);
     }
 
-    public void addPlayerToTeam(String player, String team) {
+    public void addPlayerToTeam(final String player, final String team) {
         teams.computeIfAbsent(team, key -> new ArrayList<>()).add(player);
     }
 
-    public void setTeamColor(String team, Byte color) {
+    public void setTeamColor(final String team, final Byte color) {
         teamColors.put(team, color);
     }
 
-    public Optional<Byte> getTeamColor(String team) {
+    public Optional<Byte> getTeamColor(final String team) {
         return Optional.ofNullable(teamColors.get(team));
     }
 
-    public void addTeam(String team) {
+    public void addTeam(final String team) {
         teams.computeIfAbsent(team, key -> new ArrayList<>());
     }
 
-    public void removeTeam(String team) {
+    public void removeTeam(final String team) {
         teams.remove(team);
         scoreTeams.remove(team);
         teamColors.remove(team);
         teamNameTagVisibilities.remove(team);
     }
 
-    public boolean teamExists(String team) {
+    public boolean teamExists(final String team) {
         return teams.containsKey(team);
     }
 
     public void removePlayerFromTeam(String player, String team) {
-        List<String> teamPlayers = teams.get(team);
-        if (teamPlayers != null) teamPlayers.remove(player);
+        final List<String> teamPlayers = teams.get(team);
+        if (teamPlayers != null) {
+            teamPlayers.remove(player);
+        }
     }
 
-    public boolean isPlayerInTeam(String player, String team) {
-        List<String> teamPlayers = teams.get(team);
+    public boolean isPlayerInTeam(final String player, final String team) {
+        final List<String> teamPlayers = teams.get(team);
         return teamPlayers != null && teamPlayers.contains(player);
     }
 
-    public boolean isPlayerInTeam(String player) {
-        for (List<String> teamPlayers : teams.values()) {
-            if (teamPlayers.contains(player)) return true;
-        }
-        return false;
+
+    public Optional<Byte> getPlayerTeamColor(final String player) {
+        final Optional<String> team = getTeam(player);
+        return team.flatMap(this::getTeamColor);
     }
 
-    public Optional<Byte> getPlayerTeamColor(String player) {
-        Optional<String> team = getTeam(player);
-        return team.isPresent() ? getTeamColor(team.get()) : Optional.empty();
-    }
-
-    public Optional<String> getTeam(String player) {
-        for (Map.Entry<String, List<String>> entry : teams.entrySet())
-            if (entry.getValue().contains(player))
+    public Optional<String> getTeam(final String player) {
+        for (Map.Entry<String, List<String>> entry : teams.entrySet()) {
+            if (entry.getValue().contains(player)) {
                 return Optional.of(entry.getKey());
+            }
+        }
         return Optional.empty();
     }
 
-    public void setTeamNameTagVisibility(String team, String visibility) {
+    public void setTeamNameTagVisibility(final String team, final String visibility) {
         teamNameTagVisibilities.put(team, visibility);
     }
 
-    public String getTeamNameTagVisibility(String team) {
+    public String getTeamNameTagVisibility(final String team) {
         return teamNameTagVisibilities.getOrDefault(team, "always");
     }
 
-    public boolean isNametagHidden(String username) {
-        for (Map.Entry<String, List<String>> entry : teams.entrySet()) {
+    public boolean isNametagHidden(final String username) {
+        for (final Map.Entry<String, List<String>> entry : teams.entrySet()) {
             if (entry.getValue().contains(username)) {
                 return "never".equalsIgnoreCase(teamNameTagVisibilities.getOrDefault(entry.getKey(), "always"));
             }
@@ -117,15 +116,15 @@ public class ScoreboardTracker extends StoredObject {
         return false;
     }
 
-    public List<String> getTeamMembers(String team) {
+    public List<String> getTeamMembers(final String team) {
         return teams.getOrDefault(team, new ArrayList<>());
     }
 
-    public void addObjective(String name) {
+    public void addObjective(final String name) {
         objectives.add(name);
     }
 
-    public void removeObjective(String name) {
+    public void removeObjective(final String name) {
         objectives.remove(name);
         colorDependentSidebar.values().remove(name);
         if (name.equals(colorIndependentSidebar)) {
@@ -133,13 +132,19 @@ public class ScoreboardTracker extends StoredObject {
         }
     }
 
-    public boolean objectiveExists(String name) {
+    public boolean objectiveExists(final String name) {
         return objectives.contains(name);
     }
 
-    public String sendTeamForScore(String score) {
-        if (score.length() <= 16) return score;
-        if (scoreTeams.containsKey(score)) return scoreTeams.get(score).name;
+    public String sendTeamForScore(final String score) {
+        if (score.length() <= 16) {
+            return score;
+        }
+
+        if (scoreTeams.containsKey(score)) {
+            return scoreTeams.get(score).name;
+        }
+
         int l = 16;
         int i = Math.min(16, score.length() - 16);
         String name = score.substring(i, i + l);
@@ -147,19 +152,21 @@ public class ScoreboardTracker extends StoredObject {
             i--;
             while (score.length() - l - i > 16) {
                 l--;
-                if (l < 1) return score;
+                if (l < 1) {
+                    return score;
+                }
                 i = Math.min(16, score.length() - l);
             }
             name = score.substring(i, i + l);
         }
-        String prefix = score.substring(0, i);
-        String suffix = i + l >= score.length() ? "" : score.substring(i + l);
+        final String prefix = score.substring(0, i);
+        final String suffix = i + l >= score.length() ? "" : score.substring(i + l);
 
-        ScoreTeam scoreTeam = new ScoreTeam(name, prefix, suffix);
+        final ScoreTeam scoreTeam = new ScoreTeam(name, prefix, suffix);
         scoreTeams.put(score, scoreTeam);
         scoreTeamNames.add(name);
 
-        PacketWrapper teamPacket = PacketWrapper.create(ClientboundPackets1_7_2_5.SET_PLAYER_TEAM, getUser());
+        PacketWrapper teamPacket = PacketWrapper.create(ClientboundPackets1_7_2_5.SET_PLAYER_TEAM, user());
         teamPacket.write(Types.STRING, name);
         teamPacket.write(Types.BYTE, (byte) 0);
         teamPacket.write(Types.STRING, "ViaRewind");
@@ -173,12 +180,15 @@ public class ScoreboardTracker extends StoredObject {
         return name;
     }
 
-    public String removeTeamForScore(String score) {
-        ScoreTeam scoreTeam = scoreTeams.remove(score);
-        if (scoreTeam == null) return score;
+    public String removeTeamForScore(final String score) {
+        final ScoreTeam scoreTeam = scoreTeams.remove(score);
+        if (scoreTeam == null) {
+            return score;
+        }
+
         scoreTeamNames.remove(scoreTeam.name);
 
-        PacketWrapper teamPacket = PacketWrapper.create(ClientboundPackets1_7_2_5.SET_PLAYER_TEAM, getUser());
+        final PacketWrapper teamPacket = PacketWrapper.create(ClientboundPackets1_7_2_5.SET_PLAYER_TEAM, user());
         teamPacket.write(Types.STRING, scoreTeam.name);
         teamPacket.write(Types.BYTE, (byte) 1);
         teamPacket.send(Protocol1_8To1_7_6_10.class);
@@ -190,7 +200,7 @@ public class ScoreboardTracker extends StoredObject {
         return this.colorIndependentSidebar;
     }
 
-    public void setColorIndependentSidebar(String colorIndependentSidebar) {
+    public void setColorIndependentSidebar(final String colorIndependentSidebar) {
         this.colorIndependentSidebar = colorIndependentSidebar;
     }
 
@@ -198,15 +208,6 @@ public class ScoreboardTracker extends StoredObject {
         return this.colorDependentSidebar;
     }
 
-    private static class ScoreTeam {
-        private final String prefix;
-        private final String suffix;
-        private final String name;
-
-        public ScoreTeam(String name, String prefix, String suffix) {
-            this.prefix = prefix;
-            this.suffix = suffix;
-            this.name = name;
-        }
+    private record ScoreTeam(String name, String prefix, String suffix) {
     }
 }

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/storage/WorldBorderEmulator.java

@@ -19,63 +19,54 @@ package com.viaversion.viarewind.protocol.v1_8to1_7_6_10.storage;
 
 import com.viaversion.viaversion.api.connection.StoredObject;
 import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.util.MathUtil;
+
+public final class WorldBorderEmulator extends StoredObject {
 
-public class WorldBorderEmulator extends StoredObject {
     private double x, z;
     private double oldDiameter, newDiameter;
 
-    private long lerpTime;
-    private long lerpStartTime;
+    private long deltaTime;
+    private long deltaStartTime;
 
-    private boolean init = false;
-
-    public WorldBorderEmulator(UserConnection user) {
+    public WorldBorderEmulator(UserConnection user, final double x, final double z, final double oldDiameter, final double newDiameter, final long deltaTime) {
         super(user);
-    }
 
-    public void init(double x, double z, double oldDiameter, double newDiameter, long lerpTime) {
         this.x = x;
         this.z = z;
 
         this.oldDiameter = oldDiameter;
         this.newDiameter = newDiameter;
 
-        this.lerpTime = lerpTime;
-
-        init = true;
+        this.deltaTime = deltaTime;
     }
 
-    public void setCenter(double x, double z) {
+    public void setCenter(final double x, final double z) {
         this.x = x;
         this.z = z;
     }
 
-    public void lerpSize(double oldDiameter, double newDiameter, long lerpTime) {
+    public void updateDeltaTime(final double oldDiameter, final double newDiameter, final long deltaTime) {
         this.oldDiameter = oldDiameter;
         this.newDiameter = newDiameter;
-        this.lerpTime = lerpTime;
-        this.lerpStartTime = System.currentTimeMillis();
+        this.deltaTime = deltaTime;
+        this.deltaStartTime = System.currentTimeMillis();
     }
 
     public double getSize() {
-        if (lerpTime == 0) {
+        if (deltaTime == 0) {
             return newDiameter;
         }
 
-        double percent = ((double) (System.currentTimeMillis() - lerpStartTime) / (double) (lerpTime));
-
-        // Clamp value
-        if (percent > 1.0D) percent = 1.0d;
-        else if (percent < 0.0D) percent = 0.0d;
-
-        return oldDiameter + (newDiameter - oldDiameter) * percent;
+        final double percent = ((double) (System.currentTimeMillis() - deltaStartTime) / (double) (deltaTime));
+        return oldDiameter + (newDiameter - oldDiameter) * MathUtil.clamp(percent, 0D, 1D);
     }
 
-    public void setSize(double size) {
+    public void setSize(final double size) {
         this.oldDiameter = size;
         this.newDiameter = size;
 
-        this.lerpTime = 0;
+        this.deltaTime = 0;
     }
 
     public double getX() {
@@ -86,10 +77,6 @@ public class WorldBorderEmulator extends StoredObject {
         return z;
     }
 
-    public boolean isInit() {
-        return init;
-    }
-
     public enum Side {
         NORTH(0, -1),
         EAST(1, 0),
@@ -105,3 +92,4 @@ public class WorldBorderEmulator extends StoredObject {
         }
     }
 }
+