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 e38643853220cabeac6c30912a9ae4bc1c018d5f..1eff5e4800ad3b628a42113fb3ba67458e56a40d 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java @@ -335,13 +335,17 @@ public class CraftChunk implements Chunk { PalettedContainerRO>[] biome = (includeBiome || includeBiomeTempRain) ? new PalettedContainer[cs.length] : null; Registry iregistry = this.worldServer.registryAccess().registryOrThrow(Registries.BIOME); - Codec>> biomeCodec = PalettedContainer.codecRO(iregistry.asHolderIdMap(), iregistry.holderByNameCodec(), PalettedContainer.Strategy.SECTION_BIOMES, iregistry.getHolderOrThrow(Biomes.PLAINS)); 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 - Fix ChunkSnapshot#isSectionEmpty(int); and remove codec usage + sectionEmpty[i] = cs[i].hasOnlyAir(); // fix sectionEmpty array not being filled + if (!sectionEmpty[i]) { + sectionBlockIDs[i] = cs[i].getStates().copy(); // use copy instead of round tripping with codecs + } else { + sectionBlockIDs[i] = CraftChunk.emptyBlockIDs; // use cached instance for empty block sections + } + // Paper end - Fix ChunkSnapshot#isSectionEmpty(int) LevelLightEngine lightengine = this.worldServer.getLightEngine(); DataLayer skyLightArray = lightengine.getLayerListener(LightLayer.SKY).getDataLayerData(SectionPos.of(this.x, chunk.getSectionYFromSectionIndex(i), this.z)); // SPIGOT-7498: Convert section index @@ -360,8 +364,7 @@ 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] = ((PalettedContainer>) cs[i].getBiomes()).copy(); // Paper - Perf: use copy instead of round tripping with codecs } }