Enhance compatibility and feature support for Minecraft 1.21: Add ProtocolWrapper21, update gamerule management, streamline entity tracking, and refine chunk hider logic.

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/techhider/TechHiderCommand.java

@@ -87,8 +87,8 @@ public class TechHiderCommand extends SWCommand implements Listener, ScoreboardE
             Set<String> hiddenBlockEntities = Collections.unmodifiableSet(new HashSet<>(config.getStringList("Techhider.HiddenBlockEntities")));
 
             TechHider current = new TechHider((TechHider.LocationEvaluator) (p, cX, cY) -> {
-                Chunk playerChunk = p.getLocation().getChunk();
-                return playerChunk.getX() == cX && playerChunk.getZ() == cY;
+                if (rg.buildChunkOutside(cX, cY)) return true;
+                return !hidden.get(rg).contains(p);
             }, Material.valueOf(obfuscateWith.toUpperCase()), hiddenBlocks.stream().map(String::toUpperCase).map(Material::valueOf).collect(Collectors.toSet()), hiddenBlockEntities);
             current.enable();
 

FightSystem/FightSystem_10/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper10.java

@@ -55,4 +55,7 @@ public class CraftbukkitWrapper10 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entityList.stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_12/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper12.java

@@ -55,4 +55,7 @@ public class CraftbukkitWrapper12 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entityList.stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_14/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper14.java

@@ -56,4 +56,7 @@ public class CraftbukkitWrapper14 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entitiesById.values().stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_15/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper15.java

@@ -56,4 +56,7 @@ public class CraftbukkitWrapper15 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entitiesById.values().stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_18/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper18.java

@@ -62,4 +62,7 @@ public class CraftbukkitWrapper18 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return StreamSupport.stream(((Iterable<?>) getIterable.invoke(getWorldEntities.invoke(getWorld.invoke(Config.world)))).spliterator(), false);
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_21/build.gradle.kts

@@ -41,4 +41,5 @@ dependencies {
     }
 
     compileOnly(libs.fastutil)
+    compileOnly(libs.authlib)
 }

FightSystem/FightSystem_21/src/de/steamwar/fightsystem/utils/BlockIdWrapper21.java

@@ -19,34 +19,24 @@
 
 package de.steamwar.fightsystem.utils;
 
-import de.steamwar.Reflection;
-import de.steamwar.fightsystem.Config;
-import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import com.comphenix.tinyprotocol.TinyProtocol;
+import com.mojang.authlib.GameProfile;
+import de.steamwar.core.ProtocolWrapper;
+import de.steamwar.fightsystem.FightSystem;
 import net.minecraft.core.BlockPos;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.block.state.BlockState;
+import org.bukkit.GameMode;
 import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.block.CraftBlockState;
-import org.bukkit.craftbukkit.entity.CraftPlayer;
 import org.bukkit.craftbukkit.util.CraftMagicNumbers;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 
 public class BlockIdWrapper21 implements BlockIdWrapper {
-    static Int2ObjectMap<ChunkMap.TrackedEntity> tracker;
-
-    static Reflection.Field<Object> chunkMap = Reflection.getField(ServerChunkCache.class, "chunkMap", Object.class);
-    static {
-        ServerChunkCache chunkCache = ((CraftWorld) Config.world).getHandle().getChunkSource();
-        Object map = chunkMap.get(chunkCache);
-        Reflection.Field<Int2ObjectMap> eMapField = Reflection.getField(map.getClass(), "entityMap", Int2ObjectMap.class);
-        tracker = eMapField.get(map);
-    }
 
     @Override
     public Material idToMaterial(int blockState) {
@@ -71,17 +61,17 @@ public class BlockIdWrapper21 implements BlockIdWrapper {
 
     @Override
     public void trackEntity(Player player, Entity entity) {
-        ChunkMap.TrackedEntity trackedEntity = tracker.get(entity.getEntityId());
-        if (trackedEntity != null) {
-            trackedEntity.updatePlayer(((CraftPlayer) player).getHandle());
-        }
+        if(entity instanceof Player)
+            TinyProtocol.instance.sendPacket(player, ProtocolWrapper.impl.playerInfoPacketConstructor(ProtocolWrapper.PlayerInfoAction.REMOVE, new GameProfile(entity.getUniqueId(), entity.getName()), GameMode.CREATIVE));
+
+        player.showEntity(FightSystem.getPlugin(), entity);
     }
 
     @Override
     public void untrackEntity(Player player, Entity entity) {
-        ChunkMap.TrackedEntity trackedEntity = tracker.get(entity.getEntityId());
-        if (trackedEntity != null) {
-            trackedEntity.removePlayer(((CraftPlayer) player).getHandle());
-        }
+        player.hideEntity(FightSystem.getPlugin(), entity);
+
+        if(entity instanceof Player)
+            TinyProtocol.instance.sendPacket(player, ProtocolWrapper.impl.playerInfoPacketConstructor(ProtocolWrapper.PlayerInfoAction.ADD, new GameProfile(entity.getUniqueId(), entity.getName()), GameMode.CREATIVE));
     }
 }

FightSystem/FightSystem_21/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper21.java

@@ -19,6 +19,8 @@
 
 package de.steamwar.fightsystem.utils;
 
+import de.steamwar.fightsystem.Config;
+import org.bukkit.GameRule;
 import org.bukkit.entity.Entity;
 
 public class CraftbukkitWrapper21 extends CraftbukkitWrapper18 {
@@ -27,4 +29,9 @@ public class CraftbukkitWrapper21 extends CraftbukkitWrapper18 {
     public float headRotation(Entity e) {
         return getEntity(e).getYHeadRot();
     }
+
+    @Override
+    public void setupGamerule() {
+        Config.world.setGameRule(GameRule.LOCATOR_BAR, false);
+    }
 }

FightSystem/FightSystem_8/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper8.java

@@ -52,4 +52,7 @@ public class CraftbukkitWrapper8 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entityList.stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_9/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper9.java

@@ -55,4 +55,7 @@ public class CraftbukkitWrapper9 implements CraftbukkitWrapper {
     public Stream<?> entityIterator() {
         return ((CraftWorld) Config.world).getHandle().entityList.stream();
     }
+
+    @Override
+    public void setupGamerule() { }
 }

FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java

@@ -188,6 +188,8 @@ public class FightSystem extends JavaPlugin {
         }else if(Config.mode == ArenaMode.PREPARE) {
             Fight.getUnrotated().setSchem(SchematicNode.getSchematicNode(Config.PrepareSchemID));
         }
+
+        CraftbukkitWrapper.impl.setupGamerule();
     }
 
     @Override

FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/utils/CraftbukkitWrapper.java

@@ -33,4 +33,6 @@ public interface CraftbukkitWrapper {
     float headRotation(Entity e);
 
     Stream<?> entityIterator();
+
+    void setupGamerule();
 }

FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/utils/TechHiderWrapper.java

@@ -59,7 +59,7 @@ public class TechHiderWrapper extends StateDependent implements TechHider.Locati
     private final SecretKey key;
 
     public TechHiderWrapper() {
-        super(ENABLED, FightState.All);
+        super(ENABLED, FightState.Schem);
         techHider = new TechHider(this, Config.ObfuscateWith, Config.HiddenBlocks, Config.HiddenBlockEntities);
 
         try {
@@ -68,7 +68,7 @@ public class TechHiderWrapper extends StateDependent implements TechHider.Locati
             throw new SecurityException(e);
         }
 
-        new StateDependentListener(ENABLED, FightState.All, this);
+        new StateDependentListener(ENABLED, FightState.Schem, this);
         register();
     }
 

SpigotCore/SpigotCore_21/src/de/steamwar/core/ProtocolWrapper21.java

@@ -0,0 +1,66 @@
+/*
+ *    This file is a part of the SteamWar software.
+ *
+ *    Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.core;
+
+import com.mojang.authlib.GameProfile;
+import com.mojang.datafixers.util.Pair;
+import de.steamwar.Reflection;
+import net.minecraft.Util;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoRemovePacket;
+import net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket;
+import net.minecraft.world.level.GameType;
+import org.bukkit.GameMode;
+
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.function.LongSupplier;
+
+public class ProtocolWrapper21 implements ProtocolWrapper {
+
+    private static final Reflection.Field<List> equipmentStack = Reflection.getField(equipmentPacket, List.class, 0);
+    @Override
+    public void setEquipmentPacketStack(Object packet, Object slot, Object stack) {
+        equipmentStack.set(packet, Collections.singletonList(new Pair<>(slot, stack)));
+    }
+
+    private static final Reflection.Constructor removePacketConstructor = Reflection.getConstructor(ClientboundPlayerInfoRemovePacket.class, List.class);
+
+    @Override
+    @SuppressWarnings("deprecation")
+    public Object playerInfoPacketConstructor(PlayerInfoAction action, GameProfile profile, GameMode mode) {
+        if(action == PlayerInfoAction.REMOVE)
+            return removePacketConstructor.invoke(Collections.singletonList(profile.getId()));
+        return switch (action) {
+            case ADD -> new ClientboundPlayerInfoUpdatePacket(EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.ADD_PLAYER, ClientboundPlayerInfoUpdatePacket.Action.UPDATE_GAME_MODE), new ClientboundPlayerInfoUpdatePacket.Entry(
+                    profile.getId(), profile, true, 0, GameType.byId(mode.getValue()), null, true, 0, null
+            ));
+            case GAMEMODE -> new ClientboundPlayerInfoUpdatePacket(EnumSet.of(ClientboundPlayerInfoUpdatePacket.Action.UPDATE_GAME_MODE), new ClientboundPlayerInfoUpdatePacket.Entry(
+                    profile.getId(), profile, true, 0, GameType.byId(mode.getValue()), null, true, 0, null
+            ));
+            default -> null;
+        };
+    }
+
+    @Override
+    public void initTPSWarp(LongSupplier longSupplier) {
+        Util.timeSource = () -> System.nanoTime() + longSupplier.getAsLong();
+    }
+}

SpigotCore/SpigotCore_21/src/de/steamwar/techhider/ChunkHider21.java

@@ -123,7 +123,9 @@ public class ChunkHider21 implements ChunkHider {
                 for (int x = 0; x < 16; x++) {
                     int pos = (((y * 16) + z) * 16) + x;
 
-                    switch (section.test(x, y, z)) {
+                    TechHider.State test = section.test(x, y, z);
+
+                    switch (test) {
                         case SKIP:
                             break;
                         case CHECK:

SpigotCore/SpigotCore_Main/src/de/steamwar/Reflection.java

@@ -157,14 +157,21 @@ public final class Reflection {
 			} else if(MAJOR_VERSION < 21 || MINOR_VERSION < 4) {
 				return Class.forName(spigotClassnames.getOrDefault(name, name));
 			} else {
-				Class<?> clazz = Class.forName(name);
-				if (clazz.getName().equals(name)) {
+				Class<?> clazz = null;
+				try {
+					clazz = Class.forName(name);
+				} catch (ClassNotFoundException e) {}
+				if (clazz != null && clazz.getName().equals(name)) {
 					return clazz;
 				}
 
 				try {
 					return Core.class.getClassLoader().getParent().loadClass(name);
 				} catch (ClassNotFoundException e) {
+					if (clazz == null) {
+						throw e;
+					}
+
 					return clazz;
 				}
 			}

SpigotCore/SpigotCore_Main/src/de/steamwar/techhider/ChunkHider.java

@@ -147,8 +147,9 @@ public interface ChunkHider {
                 return;
             }
 
-            int longs = (int) (((long) entries * bitsPerBlock + 63) >> 6);
-            out.writeBytes(in, longs * Long.BYTES);
+            char valuesPerLong = (char)(64 / bitsPerBlock);
+            int i1 = (entries + valuesPerLong - 1) / valuesPerLong;
+            out.writeBytes(in, i1 * Long.BYTES);
         }
 
         public long[] readDataArray() {
@@ -164,9 +165,10 @@ public interface ChunkHider {
                 return new long[entries];
             }
 
-            int longs = (int) (((long) entries * bitsPerBlock + 63) >> 6);
-            long[] array = new long[longs];
-            for(int i = 0; i < longs; i++)
+            char valuesPerLong = (char) (64 / bitsPerBlock);
+            int i1 = (entries + valuesPerLong - 1) / valuesPerLong;
+            long[] array = new long[i1];
+            for(int i = 0; i < i1; i++)
                 array[i] = in.readLong();
 
             return array;