Add 1.19.3 compatibility layer

src/main/java/com/moulberry/axiom/AxiomPaper.java

@@ -6,10 +6,11 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import net.minecraft.core.BlockPos;
 import net.minecraft.network.FriendlyByteBuf;
-import net.minecraft.server.level.ServerChunkCache;
+import net.minecraft.network.protocol.Packet;
-import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.*;
-import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.server.network.ServerGamePacketListenerImpl;
+import net.minecraft.server.network.ServerPlayerConnection;
+import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.chunk.LevelChunk;
 import org.bukkit.Bukkit;
@@ -19,6 +20,7 @@ import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -66,6 +68,23 @@ public class AxiomPaper extends JavaPlugin implements Listener {
         return getChunkSource.invoke(level);
     }
 
+    private static final Reflection.Method<ServerChunkCache, ThreadedLevelLightEngine> getLightEngine = Reflection.getTypedMethod(ServerChunkCache.class, ThreadedLevelLightEngine.class);
+    public static ThreadedLevelLightEngine getLightEngine(ServerChunkCache chunkSource) {
+        return getLightEngine.invoke(chunkSource);
+    }
+
+    private static final Reflection.Method<ServerPlayerConnection, Void> send = Reflection.getMethod(ServerPlayerConnection.class, Packet.class);
+    public static void sendPacket(ServerPlayer player, Packet<?> packet) {
+        send.invoke(AxiomPaper.getConnection(player), packet);
+    }
+
+    private static final Reflection.Field<ServerChunkCache, ChunkMap> chunkMap = Reflection.getField(ServerChunkCache.class, ChunkMap.class);
+    private static final Reflection.Method<ChunkMap, List> getPlayers = Reflection.getTypedMethod(ChunkMap.class, List.class, ChunkPos.class, boolean.class);
+    public static List<ServerPlayer> getPlayersSeeingChunk(ServerLevel level, ChunkPos pos) {
+        ChunkMap map = chunkMap.get(AxiomPaper.getChunkSource(level));
+        return (List<ServerPlayer>)getPlayers.invoke(map, pos, false);
+    }
+
     @Override
     public void onEnable() {
         instance = this;

src/main/java/com/moulberry/axiom/Reflection.java

@@ -127,6 +127,12 @@ public class Reflection {
 
 
     private static final String ORG_BUKKIT_CRAFTBUKKIT = Bukkit.getServer().getClass().getPackage().getName();
+    public static final int VERSION; // Format: 2 digit minor version, 2 digit CraftBukkit revision: eg. 2001 for v1_20_R1
+    static {
+        String[] version = ORG_BUKKIT_CRAFTBUKKIT.substring(ORG_BUKKIT_CRAFTBUKKIT.lastIndexOf('.')).split("_");
+        VERSION = Integer.parseInt(version[1]) * 100 + Integer.parseInt(version[2].substring(1));
+    }
+
     public static <T> Class<T> getClass(String name) {
         if(name.startsWith("org.bukkit.craftbukkit"))
             name = ORG_BUKKIT_CRAFTBUKKIT + name.substring(22);

src/main/java/com/moulberry/axiom/integration/ViaVersionTranslator.java

@@ -49,7 +49,7 @@ public class ViaVersionTranslator implements VersionTranslator {
 
     @Override
     public void readPalettedContainer(Player player, ByteBuf buf, PositionConsumer<BlockState> consumer) {
-        //TODO GlobalPaletteBits depend on player version
+        //TODO GlobalPaletteBits depend on player version (currently only 1.20.1, depending on Axiom version)
         DataPalette container;
         try {
             container = new PaletteType1_18(PaletteType.BLOCKS, 15).read(buf);

src/main/java/com/moulberry/axiom/packet/ChunkSectionModifier.java

@@ -2,12 +2,12 @@ package com.moulberry.axiom.packet;
 
 import com.moulberry.axiom.AxiomPaper;
 import com.moulberry.axiom.Reflection;
+import com.moulberry.axiom.version.VersionWrapper;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.SectionPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ThreadedLevelLightEngine;
 import net.minecraft.world.level.BlockGetter;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.EntityBlock;
@@ -18,7 +18,6 @@ import net.minecraft.world.level.chunk.ChunkAccess;
 import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.LevelChunkSection;
 import net.minecraft.world.level.levelgen.Heightmap;
-import net.minecraft.world.level.lighting.LightEngine;
 import net.minecraft.world.level.lighting.LightEventListener;
 import org.bukkit.World;
 
@@ -42,7 +41,6 @@ public class ChunkSectionModifier {
     private final Heightmap[] heightmaps;
     private final boolean hadOnlyAir;
 
-    private static final Reflection.Method<ServerChunkCache, ThreadedLevelLightEngine> getLightEngine = Reflection.getTypedMethod(ServerChunkCache.class, ThreadedLevelLightEngine.class);
     private static final Reflection.Method<ChunkAccess, LevelChunkSection> getSection = Reflection.getTypedMethod(ChunkAccess.class, LevelChunkSection.class, int.class);
     private static final Reflection.Method<LevelChunkSection, Boolean> hasOnlyAir = Reflection.getTypedMethod(LevelChunkSection.class, boolean.class, 1);
     private static final Reflection.Field<ChunkAccess, Map> chunkHeightmaps = Reflection.getField(ChunkAccess.class, Map.class);
@@ -53,7 +51,7 @@ public class ChunkSectionModifier {
 
         ServerLevel level = AxiomPaper.convert(world);
         chunkSource = AxiomPaper.getChunkSource(level);
-        lightEngine = getLightEngine.invoke(chunkSource);
+        lightEngine = AxiomPaper.getLightEngine(chunkSource);
         chunk = AxiomPaper.getChunk(level, cx, cz);
 
         section = getSection.invoke(chunk, cy - world.getMinHeight() / 16);
@@ -67,7 +65,6 @@ public class ChunkSectionModifier {
     private static final Reflection.Method<BlockState, Block> getBlock = Reflection.getTypedMethod(BlockState.class, Block.class);
     private static final Reflection.Method<ChunkAccess, Void> removeBlockEntity = Reflection.getMethod(ChunkAccess.class, BlockPos.class);
     private static final Reflection.Method<ServerChunkCache, Void> blockChanged = Reflection.getMethod(ServerChunkCache.class, BlockPos.class);
-    private static final Reflection.Method<LightEngine, Boolean> hasDifferentLightProperties = Reflection.getTypedMethod(LightEngine.class, boolean.class, BlockGetter.class, BlockPos.class, BlockState.class, BlockState.class);
     private static final Reflection.Method<LightEventListener, Void> checkBlock = Reflection.getMethod(LightEventListener.class, BlockPos.class);
     public void setState(int sx, int sy, int sz, BlockState state) {
         BlockState old = setBlockState.invoke(section, sx, sy, sz, state, false);
@@ -88,7 +85,7 @@ public class ChunkSectionModifier {
 
         blockChanged.invoke(chunkSource, pos);
 
-        if (hasDifferentLightProperties.invoke(null, chunk, pos, old, state)) {
+        if (VersionWrapper.impl.hasDifferentLightProperties(chunk, pos, old, state)) {
             checkBlock.invoke(lightEngine, pos);
         }
     }

src/main/java/com/moulberry/axiom/packet/SetBlockBufferPacketListener.java

@@ -2,30 +2,22 @@ package com.moulberry.axiom.packet;
 
 import com.moulberry.axiom.AxiomConstants;
 import com.moulberry.axiom.AxiomPaper;
-import com.moulberry.axiom.Reflection;
 import com.moulberry.axiom.buffer.BiomeBuffer;
 import com.moulberry.axiom.buffer.CompressedBlockEntity;
 import com.moulberry.axiom.buffer.MojBuf;
 import com.moulberry.axiom.event.AxiomModifyWorldEvent;
 import com.moulberry.axiom.integration.RegionProtection;
 import com.moulberry.axiom.integration.VersionTranslator;
+import com.moulberry.axiom.version.VersionWrapper;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.core.BlockPos;
-import net.minecraft.network.protocol.Packet;
-import net.minecraft.network.protocol.game.ClientboundChunksBiomesPacket;
-import net.minecraft.server.level.ChunkMap;
-import net.minecraft.server.level.ServerChunkCache;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.server.network.ServerPlayerConnection;
-import net.minecraft.world.level.ChunkPos;
-import net.minecraft.world.level.chunk.LevelChunk;
 import org.bukkit.Bukkit;
 import org.bukkit.Chunk;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
 
-import java.util.*;
+import java.util.HashSet;
+import java.util.Set;
 
 public class SetBlockBufferPacketListener implements AxiomPacketListener {
 
@@ -80,10 +72,6 @@ public class SetBlockBufferPacketListener implements AxiomPacketListener {
         }
     }
 
-    private static final Reflection.Field<ServerChunkCache, ChunkMap> chunkMap = Reflection.getField(ServerChunkCache.class, ChunkMap.class);
-    private static final Reflection.Method<ChunkMap, List> getPlayers = Reflection.getTypedMethod(ChunkMap.class, List.class, ChunkPos.class, boolean.class);
-    private static final Reflection.Method<ServerPlayerConnection, Void> send = Reflection.getMethod(ServerPlayerConnection.class, Packet.class);
-    private static final Reflection.Method<ClientboundChunksBiomesPacket, ClientboundChunksBiomesPacket> forChunks = Reflection.getTypedMethod(ClientboundChunksBiomesPacket.class, ClientboundChunksBiomesPacket.class, List.class);
     private void applyBiomeBuffer(World world, BiomeBuffer biomeBuffer) {
         Set<Chunk> changedChunks = new HashSet<>();
         biomeBuffer.forEachEntry((x, y, z, biome) -> {
@@ -93,17 +81,7 @@ public class SetBlockBufferPacketListener implements AxiomPacketListener {
             changedChunks.add(world.getChunkAt(cx, cz));
         });
 
-        ServerLevel level = AxiomPaper.convert(world);
+        VersionWrapper.impl.publishBiomeChange(AxiomPaper.convert(world), changedChunks);
-        ChunkMap map = chunkMap.get(AxiomPaper.getChunkSource(level));
-        HashMap<ServerPlayer, List<LevelChunk>> playerChunks = new HashMap<>();
-        for (Chunk chunk : changedChunks) {
-            ChunkPos chunkPos = new ChunkPos(chunk.getX(), chunk.getZ());
-            LevelChunk nativeChunk = AxiomPaper.getChunk(level, chunk.getX(), chunk.getZ());
-            for (ServerPlayer player : (List<ServerPlayer>)getPlayers.invoke(map, chunkPos, false)) {
-                playerChunks.computeIfAbsent(player, p -> new ArrayList<>()).add(nativeChunk);
-            }
-        }
-        playerChunks.forEach((serverPlayer, list) -> send.invoke(AxiomPaper.getConnection(serverPlayer), forChunks.invoke(null, list)));
     }
 
 }

src/main/java/com/moulberry/axiom/version/Version19R2.java

@@ -0,0 +1,41 @@
+package com.moulberry.axiom.version;
+
+import com.moulberry.axiom.AxiomPaper;
+import com.moulberry.axiom.Reflection;
+import net.minecraft.core.BlockPos;
+import net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.ThreadedLevelLightEngine;
+import net.minecraft.world.level.BlockGetter;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.chunk.LevelChunk;
+import org.bukkit.Chunk;
+
+import java.util.Set;
+
+public class Version19R2 implements VersionWrapper {
+
+    private static final Reflection.Method<BlockState, Integer> getLightBlock = Reflection.getTypedMethod(BlockState.class, int.class, BlockGetter.class, BlockPos.class);
+    private static final Reflection.Field<BlockState, Integer> lightEmission = Reflection.getField(BlockState.class, int.class);
+    private static final Reflection.Field<BlockState, Boolean> useShapeForLightOcclusion = Reflection.getField(BlockState.class, boolean.class);
+    @Override
+    public boolean hasDifferentLightProperties(BlockGetter chunk, BlockPos pos, BlockState old, BlockState state) {
+        return getLightBlock.invoke(old, chunk, pos) != getLightBlock.invoke(state, chunk, pos) || lightEmission.get(old) != lightEmission.get(state) || useShapeForLightOcclusion.get(old) || useShapeForLightOcclusion.get(state);
+    }
+
+    @Override
+    public void publishBiomeChange(ServerLevel level, Set<Chunk> chunks) {
+        ThreadedLevelLightEngine lightEngine = AxiomPaper.getLightEngine(AxiomPaper.getChunkSource(level));
+
+        for (Chunk chunk : chunks) {
+            ChunkPos chunkPos = new ChunkPos(chunk.getX(), chunk.getZ());
+            LevelChunk nativeChunk = AxiomPaper.getChunk(level, chunk.getX(), chunk.getZ());
+            ClientboundLevelChunkWithLightPacket packet = new ClientboundLevelChunkWithLightPacket(nativeChunk, lightEngine, null, null, true);
+            for (ServerPlayer player : AxiomPaper.getPlayersSeeingChunk(level, chunkPos)) {
+                AxiomPaper.sendPacket(player, packet);
+            }
+        }
+    }
+}

src/main/java/com/moulberry/axiom/version/Version20R1.java

@@ -0,0 +1,42 @@
+package com.moulberry.axiom.version;
+
+import com.moulberry.axiom.AxiomPaper;
+import com.moulberry.axiom.Reflection;
+import net.minecraft.core.BlockPos;
+import net.minecraft.network.protocol.game.ClientboundChunksBiomesPacket;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.level.BlockGetter;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.chunk.LevelChunk;
+import net.minecraft.world.level.lighting.LightEngine;
+import org.bukkit.Chunk;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Set;
+
+public class Version20R1 implements VersionWrapper {
+
+    private static final Reflection.Method<LightEngine, Boolean> hasDifferentLightProperties = Reflection.getTypedMethod(LightEngine.class, boolean.class, BlockGetter.class, BlockPos.class, BlockState.class, BlockState.class);
+    @Override
+    public boolean hasDifferentLightProperties(BlockGetter chunk, BlockPos pos, BlockState old, BlockState state) {
+        return hasDifferentLightProperties.invoke(null, chunk, pos, old, state);
+    }
+
+    private static final Reflection.Method<ClientboundChunksBiomesPacket, ClientboundChunksBiomesPacket> forChunks = Reflection.getTypedMethod(ClientboundChunksBiomesPacket.class, ClientboundChunksBiomesPacket.class, List.class);
+    @Override
+    public void publishBiomeChange(ServerLevel level, Set<Chunk> chunks) {
+        HashMap<ServerPlayer, List<LevelChunk>> playerChunks = new HashMap<>();
+        for (Chunk chunk : chunks) {
+            ChunkPos chunkPos = new ChunkPos(chunk.getX(), chunk.getZ());
+            LevelChunk nativeChunk = AxiomPaper.getChunk(level, chunk.getX(), chunk.getZ());
+            for (ServerPlayer player : AxiomPaper.getPlayersSeeingChunk(level, chunkPos)) {
+                playerChunks.computeIfAbsent(player, p -> new ArrayList<>()).add(nativeChunk);
+            }
+        }
+        playerChunks.forEach((serverPlayer, list) -> AxiomPaper.sendPacket(serverPlayer, forChunks.invoke(null, list)));
+    }
+}

src/main/java/com/moulberry/axiom/version/VersionWrapper.java

@@ -0,0 +1,18 @@
+package com.moulberry.axiom.version;
+
+import com.moulberry.axiom.Reflection;
+import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.level.BlockGetter;
+import net.minecraft.world.level.block.state.BlockState;
+import org.bukkit.Chunk;
+
+import java.util.Set;
+
+public interface VersionWrapper {
+    VersionWrapper impl = Reflection.VERSION > 1902 ? new Version20R1() : new Version19R2();
+
+    boolean hasDifferentLightProperties(BlockGetter chunk, BlockPos pos, BlockState old, BlockState state);
+    void publishBiomeChange(ServerLevel level, Set<Chunk> chunks);
+
+}