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57 lines
4.0 KiB
Diff
57 lines
4.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 12 Mar 2022 06:31:13 -0800
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Subject: [PATCH] Fix swamp hut cat generation deadlock
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The worldgen thread will attempt to get structure references
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via the world's getChunkAt method, which is fine if the gen is
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not cancelled - but if the chunk was unloaded, the call will block
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indefinitely. Instead of using the world state, we use the already
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supplied generatoraccess which will always have the chunk available.
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diff --git a/src/main/java/net/minecraft/world/entity/animal/Cat.java b/src/main/java/net/minecraft/world/entity/animal/Cat.java
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index 5f7c394f9cc178c9cb06c90b91296b979d61239b..e4eac546836b73b5e9c8fd68ca0d32c01148313e 100644
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--- a/src/main/java/net/minecraft/world/entity/animal/Cat.java
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+++ b/src/main/java/net/minecraft/world/entity/animal/Cat.java
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@@ -392,7 +392,7 @@ public class Cat extends TamableAnimal {
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Registry<ConfiguredStructureFeature<?, ?>> iregistry = worldserver1.registryAccess().registryOrThrow(Registry.CONFIGURED_STRUCTURE_FEATURE_REGISTRY);
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if (ChunkGenerator.allConfigurations(iregistry, StructureFeature.SWAMP_HUT).anyMatch((structurefeature) -> {
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- return worldserver1.structureFeatureManager().getStructureWithPieceAt(this.blockPosition(), structurefeature).isValid();
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+ return worldserver1.structureFeatureManager().getStructureWithPieceAt(this.blockPosition(), structurefeature, world).isValid(); // Paper - fix deadlock
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})) {
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this.setCatType(10);
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this.setPersistenceRequired();
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diff --git a/src/main/java/net/minecraft/world/level/StructureFeatureManager.java b/src/main/java/net/minecraft/world/level/StructureFeatureManager.java
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index 2825975e5b33ea13f199008c7a4abc72ebf990b3..56c4f849d92b38537602fd77e481ee60a25bc84b 100644
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--- a/src/main/java/net/minecraft/world/level/StructureFeatureManager.java
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+++ b/src/main/java/net/minecraft/world/level/StructureFeatureManager.java
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@@ -56,7 +56,12 @@ public class StructureFeatureManager {
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}
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public List<StructureStart> startsForFeature(SectionPos sectionPos, ConfiguredStructureFeature<?, ?> configuredStructureFeature) {
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- LongSet longSet = this.level.getChunk(sectionPos.x(), sectionPos.z(), ChunkStatus.STRUCTURE_REFERENCES).getReferencesForFeature(configuredStructureFeature);
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+ // Paper start - add world option
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+ return this.startsForFeature(sectionPos, configuredStructureFeature, (ServerLevelAccessor)null);
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+ }
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+ public List<StructureStart> startsForFeature(SectionPos sectionPos, ConfiguredStructureFeature<?, ?> configuredStructureFeature, ServerLevelAccessor world) {
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+ LongSet longSet = (world == null ? this.level : world).getChunk(sectionPos.x(), sectionPos.z(), ChunkStatus.STRUCTURE_REFERENCES).getReferencesForFeature(configuredStructureFeature);
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+ // Paper end - add world option
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ImmutableList.Builder<StructureStart> builder = ImmutableList.builder();
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this.fillStartsForFeature(configuredStructureFeature, longSet, builder::add);
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return builder.build();
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@@ -106,7 +111,12 @@ public class StructureFeatureManager {
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}
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public StructureStart getStructureWithPieceAt(BlockPos pos, ConfiguredStructureFeature<?, ?> configuredStructureFeature) {
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- for(StructureStart structureStart : this.startsForFeature(SectionPos.of(pos), configuredStructureFeature)) {
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+ // Paper start - add world option
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+ return this.getStructureWithPieceAt(pos, configuredStructureFeature, (ServerLevelAccessor)null);
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+ }
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+ public StructureStart getStructureWithPieceAt(BlockPos pos, ConfiguredStructureFeature<?, ?> configuredStructureFeature, ServerLevelAccessor world) {
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+ // Paper end - add world option
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+ for(StructureStart structureStart : this.startsForFeature(SectionPos.of(pos), configuredStructureFeature, world)) { // Paper - add world option
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if (this.structureHasPieceAt(pos, structureStart)) {
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return structureStart;
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}
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