R3944Realms/ModernFix
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Merge 1.20.6 into 1.21

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embeddedt 2024-05-12 15:21:27 -04:00
commit e75810db5b
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22
common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_structure_location/ServerLevelMixin.java
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package org.embeddedt.modernfix.common.mixin.perf.faster_structure_location;
import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
import net.minecraft.server.level.ServerChunkCache;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.level.levelgen.structure.StructureCheck;
import org.embeddedt.modernfix.duck.IStructureCheck;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
@Mixin(ServerLevel.class)
public class ServerLevelMixin {
@Shadow @Final private ServerChunkCache chunkSource;
@ModifyExpressionValue(method = "<init>", at = @At(value = "NEW", target = "(Lnet/minecraft/world/level/chunk/storage/ChunkScanAccess;Lnet/minecraft/core/RegistryAccess;Lnet/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplateManager;Lnet/minecraft/resources/ResourceKey;Lnet/minecraft/world/level/chunk/ChunkGenerator;Lnet/minecraft/world/level/levelgen/RandomState;Lnet/minecraft/world/level/LevelHeightAccessor;Lnet/minecraft/world/level/biome/BiomeSource;JLcom/mojang/datafixers/DataFixer;)Lnet/minecraft/world/level/levelgen/structure/StructureCheck;", ordinal = 0))
private StructureCheck attachGeneratorState(StructureCheck check) {
((IStructureCheck)check).mfix$setStructureState(this.chunkSource.getGeneratorState());
return check;
}
}

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common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/faster_structure_location/StructureCheckMixin.java
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package org.embeddedt.modernfix.common.mixin.perf.faster_structure_location;
import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
import net.minecraft.core.Registry;
import net.minecraft.world.level.ChunkPos;
import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
import net.minecraft.world.level.levelgen.structure.Structure;
import net.minecraft.world.level.levelgen.structure.StructureCheck;
import net.minecraft.world.level.levelgen.structure.StructureCheckResult;
import org.embeddedt.modernfix.duck.IStructureCheck;
import org.spongepowered.asm.mixin.Final;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
@Mixin(StructureCheck.class)
public class StructureCheckMixin implements IStructureCheck {
@Shadow @Final private Registry<Structure> structureConfigs;
private ChunkGeneratorStructureState mfix$structureState;
@Override
public void mfix$setStructureState(ChunkGeneratorStructureState state) {
mfix$structureState = state;
}
/**
* @author embeddedt (inspired by 24w04a and Bytzo's comment on https://bugs.mojang.com/browse/MC-249136)
* @reason Avoid running the canCreateStructure method (which can be expensive) if the structure placement already
* forbids placing the structure in this chunk.
*/
@ModifyExpressionValue(method = "checkStart", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/level/levelgen/structure/StructureCheck;tryLoadFromStorage(Lnet/minecraft/world/level/ChunkPos;Lnet/minecraft/world/level/levelgen/structure/Structure;ZJ)Lnet/minecraft/world/level/levelgen/structure/StructureCheckResult;"))
private StructureCheckResult mfix$checkForValidPosition(StructureCheckResult storageResult, ChunkPos chunkPos, Structure structure, boolean skipKnownStructures) {
if (storageResult != null) {
return storageResult;
} else if(mfix$structureState != null) {
// Check if any of the placements allow for this structure to be in this chunk
var structureHolder = this.structureConfigs.wrapAsHolder(structure);
for (var placement : mfix$structureState.getPlacementsForStructure(structureHolder)) {
if (placement.isStructureChunk(mfix$structureState, chunkPos.x, chunkPos.z)) {
// Allowed - return null so regular check runs
return null;
}
}
// Not allowed - early exit by returning a non-null value
return StructureCheckResult.START_NOT_PRESENT;
} else {
return null;
}
}
}