23w12a

build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 
 allprojects {
     group = "com.viaversion"
-    version = "4.6.2-SNAPSHOT"
+    version = "4.7.0-23w12a-SNAPSHOT"
     description = "Allow older clients to join newer server versions."
 }
 

common/src/main/java/com/viaversion/viabackwards/api/ViaBackwardsPlatform.java

@@ -49,6 +49,7 @@ import com.viaversion.viabackwards.protocol.protocol1_18_2to1_19.Protocol1_18_2T
 import com.viaversion.viabackwards.protocol.protocol1_18to1_18_2.Protocol1_18To1_18_2;
 import com.viaversion.viabackwards.protocol.protocol1_19_1to1_19_3.Protocol1_19_1To1_19_3;
 import com.viaversion.viabackwards.protocol.protocol1_19_3to1_19_4.Protocol1_19_3To1_19_4;
+import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.Protocol1_19_4To1_20;
 import com.viaversion.viabackwards.protocol.protocol1_19to1_19_1.Protocol1_19To1_19_1;
 import com.viaversion.viabackwards.protocol.protocol1_9_4to1_10.Protocol1_9_4To1_10;
 import com.viaversion.viaversion.api.Via;
@@ -60,7 +61,7 @@ import java.util.logging.Logger;
 
 public interface ViaBackwardsPlatform {
 
-    String MINIMUM_VV_VERSION = "4.6.0";
+    String MINIMUM_VV_VERSION = "4.7.0";
     String IMPL_VERSION = "$IMPL_VERSION";
 
     /**
@@ -123,6 +124,8 @@ public interface ViaBackwardsPlatform {
         protocolManager.registerProtocol(new Protocol1_19To1_19_1(), ProtocolVersion.v1_19, ProtocolVersion.v1_19_1);
         protocolManager.registerProtocol(new Protocol1_19_1To1_19_3(), ProtocolVersion.v1_19_1, ProtocolVersion.v1_19_3);
         protocolManager.registerProtocol(new Protocol1_19_3To1_19_4(), ProtocolVersion.v1_19_3, ProtocolVersion.v1_19_4);
+
+        protocolManager.registerProtocol(new Protocol1_19_4To1_20(), ProtocolVersion.v1_19_4, ProtocolVersion.v1_20);
     }
 
     /**

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_3to1_19_4/Protocol1_19_3To1_19_4.java

@@ -1,5 +1,5 @@
 /*
- * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
  * Copyright (C) 2023 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_3to1_19_4/packets/EntityPackets1_19_4.java

@@ -1,5 +1,5 @@
 /*
- * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
  * Copyright (C) 2023 ViaVersion and contributors
  *
  * This program is free software: you can redistribute it and/or modify

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_4to1_20/Protocol1_19_4To1_20.java

@@ -0,0 +1,85 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2023 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.viabackwards.protocol.protocol1_19_4to1_20;
+
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.data.BackwardsMappings;
+import com.viaversion.viabackwards.api.rewriters.SoundRewriter;
+import com.viaversion.viabackwards.api.rewriters.TranslatableRewriter;
+import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.packets.BlockItemPackets1_20;
+import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.packets.EntityPackets1_20;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.entities.Entity1_19_4Types;
+import com.viaversion.viaversion.data.entity.EntityTrackerBase;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ClientboundPackets1_19_4;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ServerboundPackets1_19_4;
+import com.viaversion.viaversion.protocols.protocol1_20to1_19_4.Protocol1_20To1_19_4;
+import com.viaversion.viaversion.rewriter.StatisticsRewriter;
+import com.viaversion.viaversion.rewriter.TagRewriter;
+
+public final class Protocol1_19_4To1_20 extends BackwardsProtocol<ClientboundPackets1_19_4, ClientboundPackets1_19_4, ServerboundPackets1_19_4, ServerboundPackets1_19_4> {
+
+    public static final BackwardsMappings MAPPINGS = new BackwardsMappings("1.20", "1.19.4", Protocol1_20To1_19_4.class);
+    private final TranslatableRewriter<ClientboundPackets1_19_4> translatableRewriter = new TranslatableRewriter<>(this);
+    private final EntityPackets1_20 entityRewriter = new EntityPackets1_20(this);
+    private final BlockItemPackets1_20 itemRewriter = new BlockItemPackets1_20(this);
+
+    public Protocol1_19_4To1_20() {
+        super(ClientboundPackets1_19_4.class, ClientboundPackets1_19_4.class, ServerboundPackets1_19_4.class, ServerboundPackets1_19_4.class);
+    }
+
+    @Override
+    protected void registerPackets() {
+        super.registerPackets();
+
+        final TagRewriter<ClientboundPackets1_19_4> tagRewriter = new TagRewriter<>(this);
+        tagRewriter.registerGeneric(ClientboundPackets1_19_4.TAGS);
+
+        final SoundRewriter<ClientboundPackets1_19_4> soundRewriter = new SoundRewriter<>(this);
+        soundRewriter.registerStopSound(ClientboundPackets1_19_4.STOP_SOUND);
+        soundRewriter.register1_19_3Sound(ClientboundPackets1_19_4.SOUND);
+        soundRewriter.registerSound(ClientboundPackets1_19_4.ENTITY_SOUND);
+
+        new StatisticsRewriter<>(this).register(ClientboundPackets1_19_4.STATISTICS);
+    }
+
+    @Override
+    public void init(final UserConnection user) {
+        addEntityTracker(user, new EntityTrackerBase(user, Entity1_19_4Types.PLAYER));
+    }
+
+    @Override
+    public BackwardsMappings getMappingData() {
+        return MAPPINGS;
+    }
+
+    @Override
+    public EntityPackets1_20 getEntityRewriter() {
+        return entityRewriter;
+    }
+
+    @Override
+    public BlockItemPackets1_20 getItemRewriter() {
+        return itemRewriter;
+    }
+
+    @Override
+    public TranslatableRewriter<ClientboundPackets1_19_4> getTranslatableRewriter() {
+        return translatableRewriter;
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_4to1_20/packets/BlockItemPackets1_20.java

@@ -0,0 +1,81 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2023 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.viabackwards.protocol.protocol1_19_4to1_20.packets;
+
+import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.Protocol1_19_4To1_20;
+import com.viaversion.viaversion.api.minecraft.Position;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.protocols.protocol1_18to1_17_1.types.Chunk1_18Type;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ClientboundPackets1_19_4;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ServerboundPackets1_19_4;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.rewriter.RecipeRewriter1_19_4;
+import com.viaversion.viaversion.rewriter.BlockRewriter;
+import com.viaversion.viaversion.rewriter.ItemRewriter;
+
+public final class BlockItemPackets1_20 extends ItemRewriter<ClientboundPackets1_19_4, ServerboundPackets1_19_4, Protocol1_19_4To1_20> {
+
+    public BlockItemPackets1_20(final Protocol1_19_4To1_20 protocol) {
+        super(protocol);
+    }
+
+    @Override
+    public void registerPackets() {
+        final BlockRewriter<ClientboundPackets1_19_4> blockRewriter = new BlockRewriter<>(protocol, Type.POSITION1_14);
+        blockRewriter.registerBlockAction(ClientboundPackets1_19_4.BLOCK_ACTION);
+        blockRewriter.registerBlockChange(ClientboundPackets1_19_4.BLOCK_CHANGE);
+        blockRewriter.registerVarLongMultiBlockChange(ClientboundPackets1_19_4.MULTI_BLOCK_CHANGE);
+        blockRewriter.registerEffect(ClientboundPackets1_19_4.EFFECT, 1010, 2001);
+        blockRewriter.registerChunkData1_19(ClientboundPackets1_19_4.CHUNK_DATA, Chunk1_18Type::new);
+        blockRewriter.registerBlockEntityData(ClientboundPackets1_19_4.BLOCK_ENTITY_DATA);
+
+        registerOpenWindow(ClientboundPackets1_19_4.OPEN_WINDOW);
+        registerSetCooldown(ClientboundPackets1_19_4.COOLDOWN);
+        registerWindowItems1_17_1(ClientboundPackets1_19_4.WINDOW_ITEMS);
+        registerSetSlot1_17_1(ClientboundPackets1_19_4.SET_SLOT);
+        registerAdvancements(ClientboundPackets1_19_4.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
+        registerEntityEquipmentArray(ClientboundPackets1_19_4.ENTITY_EQUIPMENT);
+        registerClickWindow1_17_1(ServerboundPackets1_19_4.CLICK_WINDOW);
+        registerTradeList1_19(ClientboundPackets1_19_4.TRADE_LIST);
+        registerCreativeInvAction(ServerboundPackets1_19_4.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
+        registerWindowPropertyEnchantmentHandler(ClientboundPackets1_19_4.WINDOW_PROPERTY);
+        registerSpawnParticle1_19(ClientboundPackets1_19_4.SPAWN_PARTICLE);
+
+        protocol.registerClientbound(ClientboundPackets1_19_4.OPEN_SIGN_EDITOR, wrapper -> {
+            wrapper.passthrough(Type.POSITION1_14);
+            final boolean frontSide = wrapper.read(Type.BOOLEAN);
+            if (!frontSide) {
+                // TODO track front side to check in serverbound
+                wrapper.cancel();
+            }
+        });
+        protocol.registerServerbound(ServerboundPackets1_19_4.UPDATE_SIGN, wrapper -> {
+            final Position position = wrapper.passthrough(Type.POSITION1_14);
+            wrapper.write(Type.BOOLEAN, true); // Front side
+
+            //TODO Track lines to send back with edited
+            /*final CompoundTag tag = new CompoundTag();
+            final PacketWrapper signUpdate = wrapper.create(ClientboundPackets1_19_4.BLOCK_ENTITY_DATA);
+            signUpdate.send(Protocol1_19_4To1_20.class);
+            signUpdate.write(Type.POSITION1_14, position);
+            signUpdate.write(Type.VAR_INT, 5); // Sign
+            signUpdate.write(Type.NBT, tag);*/
+        });
+
+        new RecipeRewriter1_19_4<>(protocol).register(ClientboundPackets1_19_4.DECLARE_RECIPES);
+    }
+}

common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_19_4to1_20/packets/EntityPackets1_20.java

@@ -0,0 +1,85 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * Copyright (C) 2023 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.viabackwards.protocol.protocol1_19_4to1_20.packets;
+
+import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
+import com.viaversion.viabackwards.protocol.protocol1_19_4to1_20.Protocol1_19_4To1_20;
+import com.viaversion.viaversion.api.minecraft.entities.Entity1_19_4Types;
+import com.viaversion.viaversion.api.minecraft.entities.EntityType;
+import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
+import com.viaversion.viaversion.api.type.Type;
+import com.viaversion.viaversion.api.type.types.version.Types1_19_4;
+import com.viaversion.viaversion.api.type.types.version.Types1_20;
+import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ClientboundPackets1_19_4;
+
+public final class EntityPackets1_20 extends EntityRewriter<ClientboundPackets1_19_4, Protocol1_19_4To1_20> {
+
+    public EntityPackets1_20(final Protocol1_19_4To1_20 protocol) {
+        super(protocol);
+    }
+
+    @Override
+    public void registerPackets() {
+        registerTrackerWithData1_19(ClientboundPackets1_19_4.SPAWN_ENTITY, Entity1_19_4Types.FALLING_BLOCK);
+        registerMetadataRewriter(ClientboundPackets1_19_4.ENTITY_METADATA, Types1_20.METADATA_LIST, Types1_19_4.METADATA_LIST);
+        registerRemoveEntities(ClientboundPackets1_19_4.REMOVE_ENTITIES);
+
+        protocol.registerClientbound(ClientboundPackets1_19_4.JOIN_GAME, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.INT); // Entity id
+                map(Type.BOOLEAN); // Hardcore
+                map(Type.UNSIGNED_BYTE); // Gamemode
+                map(Type.BYTE); // Previous Gamemode
+                map(Type.STRING_ARRAY); // World List
+                map(Type.NBT); // Dimension registry
+                map(Type.STRING); // Dimension key
+                map(Type.STRING); // World
+                handler(dimensionDataHandler()); // Caches dimensions to access data like height later
+                handler(biomeSizeTracker()); // Tracks the amount of biomes sent for chunk data
+                handler(worldDataTrackerHandlerByKey()); // Tracks world height and name for chunk data and entity (un)tracking
+            }
+        });
+
+        protocol.registerClientbound(ClientboundPackets1_19_4.RESPAWN, new PacketHandlers() {
+            @Override
+            public void register() {
+                map(Type.STRING); // Dimension
+                map(Type.STRING); // World
+                handler(worldDataTrackerHandlerByKey()); // Tracks world height and name for chunk data and entity (un)tracking
+            }
+        });
+    }
+
+    @Override
+    protected void registerRewrites() {
+        filter().handler((event, meta) -> meta.setMetaType(Types1_19_4.META_TYPES.byId(meta.metaType().typeId())));
+        registerMetaTypeHandler(Types1_19_4.META_TYPES.itemType, Types1_19_4.META_TYPES.blockStateType,
+                Types1_19_4.META_TYPES.particleType, Types1_19_4.META_TYPES.optionalComponentType, Types1_19_4.META_TYPES.componentType);
+
+        filter().filterFamily(Entity1_19_4Types.MINECART_ABSTRACT).index(11).handler((event, meta) -> {
+            final int blockState = meta.value();
+            meta.setValue(protocol.getMappingData().getNewBlockStateId(blockState));
+        });
+    }
+
+    @Override
+    public EntityType typeFromId(final int type) {
+        return Entity1_19_4Types.getTypeFromId(type);
+    }
+}

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 # ViaVersion
-viaver = "4.6.0"
+viaver = "4.7.0-23w12a-SNAPSHOT"
 
 # Common provided
 netty = "4.0.20.Final"