From 4ecf9eb0078780da3857ed41555a799445b85abb Mon Sep 17 00:00:00 2001 From: Aikar Date: Thu, 20 Sep 2018 19:11:33 -0400 Subject: [PATCH] MC-134115: Fix Double Chest Conversion Error A bug with double chest conversion would lead to data loss from chunks if they crossed chunk boundries. This fixes the issue. diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java index 4f72b1b184..1c4e892aad 100644 --- a/src/main/java/net/minecraft/server/Chunk.java +++ b/src/main/java/net/minecraft/server/Chunk.java @@ -515,6 +515,26 @@ public class Chunk implements IChunkAccess { return this.a(blockposition, iblockdata, flag, true); } + // Paper start + public void setTypeDirect(BlockPosition blockposition, IBlockData iblockdata) { + int i = blockposition.getX() & 15; + int j = blockposition.getY(); + int k = blockposition.getZ() & 15; + ChunkSection section = this.sections[j >> 4]; + + if (section == Chunk.EMPTY_CHUNK_SECTION) { + if (iblockdata.isAir()) { + return; + } + + section = new ChunkSection(j >> 4 << 4, this.world.worldProvider.g(), this, this.world, true); // Paper - Anti-Xray + this.sections[j >> 4] = section; + } + + section.setType(i, j & 15, k, iblockdata); + } + // Paper end + @Nullable public IBlockData a(BlockPosition blockposition, IBlockData iblockdata, boolean flag, boolean doPlace) { // CraftBukkit end diff --git a/src/main/java/net/minecraft/server/ChunkConverter.java b/src/main/java/net/minecraft/server/ChunkConverter.java index 65b2654de8..70c60d54e7 100644 --- a/src/main/java/net/minecraft/server/ChunkConverter.java +++ b/src/main/java/net/minecraft/server/ChunkConverter.java @@ -198,10 +198,15 @@ public class ChunkConverter { EnumDirection enumdirection1 = (EnumDirection)iblockdata.get(BlockChest.FACING); if (enumdirection.k() != enumdirection1.k() && enumdirection1 == iblockdata1.get(BlockChest.FACING)) { BlockPropertyChestType blockpropertychesttype = enumdirection == enumdirection1.e() ? BlockPropertyChestType.LEFT : BlockPropertyChestType.RIGHT; - generatoraccess.setTypeAndData(blockposition1, (IBlockData)iblockdata1.set(BlockChest.b, blockpropertychesttype.a()), 18); + // Paper start + Chunk chunk = ((World) generatoraccess.getMinecraftWorld()).getChunkAtWorldCoords(blockposition); + Chunk chunk1 = ((World) generatoraccess.getMinecraftWorld()).getChunkAtWorldCoords(blockposition1); + chunk1.setTypeDirect(blockposition1, (IBlockData)iblockdata1.set(BlockChest.b, blockpropertychesttype.a())); + if (enumdirection1 == EnumDirection.NORTH || enumdirection1 == EnumDirection.EAST) { - TileEntity tileentity = generatoraccess.getTileEntity(blockposition); - TileEntity tileentity1 = generatoraccess.getTileEntity(blockposition1); + TileEntity tileentity = chunk.getTileEntity(blockposition); + TileEntity tileentity1 = chunk1.getTileEntity(blockposition1); + // Paper end if (tileentity instanceof TileEntityChest && tileentity1 instanceof TileEntityChest) { TileEntityChest.a((TileEntityChest)tileentity, (TileEntityChest)tileentity1); } -- 2.19.0