From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Jason Penilla <11360596+jpenilla@users.noreply.github.com> Date: Thu, 9 Dec 2021 00:08:11 -0800 Subject: [PATCH] Fix ChunkSnapshot#isSectionEmpty(int) and optimize PalettedContainer copying by not using codecs diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java index 034b66ad8e75907836d421d0aa42a70cad38ad33..403aba29347c779da75337531c3723632120e7c9 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java @@ -282,13 +282,17 @@ public class CraftChunk implements Chunk { PalettedContainer>[] biome = (includeBiome || includeBiomeTempRain) ? new PalettedContainer[cs.length] : null; Registry iregistry = this.worldServer.registryAccess().registryOrThrow(Registry.BIOME_REGISTRY); - Codec> biomeCodec = PalettedContainer.codec(iregistry, iregistry.byNameCodec(), PalettedContainer.Strategy.SECTION_BIOMES, iregistry.getOrThrow(Biomes.PLAINS), null); // Paper - Anti-Xray - Add preset biomes for (int i = 0; i < cs.length; i++) { - CompoundTag data = new CompoundTag(); - data.put("block_states", ChunkSerializer.BLOCK_STATE_CODEC.encodeStart(NbtOps.INSTANCE, cs[i].getStates()).get().left().get()); - sectionBlockIDs[i] = ChunkSerializer.BLOCK_STATE_CODEC.parse(NbtOps.INSTANCE, data.getCompound("block_states")).get().left().get(); + // Paper start + sectionEmpty[i] = cs[i].hasOnlyAir(); // Paper - fix sectionEmpty array not being filled + if (!sectionEmpty[i]) { + sectionBlockIDs[i] = cs[i].getStates().copy(); // Paper - use copy instead of round tripping with codecs + } else { + sectionBlockIDs[i] = CraftChunk.emptyBlockIDs; // Paper - use cached instance for empty block sections + } + // Paper end LevelLightEngine lightengine = chunk.level.getLightEngine(); DataLayer skyLightArray = lightengine.getLayerListener(LightLayer.SKY).getDataLayerData(SectionPos.of(x, i, z)); @@ -307,8 +311,7 @@ public class CraftChunk implements Chunk { } if (biome != null) { - data.put("biomes", biomeCodec.encodeStart(NbtOps.INSTANCE, cs[i].getBiomes()).get().left().get()); - biome[i] = biomeCodec.parse(NbtOps.INSTANCE, data.getCompound("biomes")).get().left().get(); + biome[i] = cs[i].getBiomes().copy(); // Paper - use copy instead of round tripping with codecs } }