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Original file line number Diff line number Diff line change
Expand Up @@ -141,6 +141,7 @@ public static void registerCommonPlacementConditions(BiConsumer<String, MapCodec
consumer.accept("sample_density", SampleDensityPlacementCondition.CODEC);
consumer.accept("sample_noise_router", SampleNoiseRouterPlacementCondition.CODEC);
consumer.accept("true", TruePlacementCondition.CODEC);
consumer.accept("mod_loaded", ModLoadedPlacementCondition.CODEC);
}

public static void registerCommonStructureProcessors(BiConsumer<String, StructureProcessorType<?>> consumer) {
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
package dev.worldgen.lithostitched.worldgen.placementcondition;

import com.mojang.serialization.Codec;
import com.mojang.serialization.MapCodec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import dev.worldgen.lithostitched.platform.Services;
import net.minecraft.core.BlockPos;

public record ModLoadedPlacementCondition(String mod) implements PlacementCondition {
public static final MapCodec<ModLoadedPlacementCondition> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
Codec.string(2, 64).fieldOf("mod").forGetter(ModLoadedPlacementCondition::mod)
).apply(instance, ModLoadedPlacementCondition::new));

@Override
public boolean test(Context context, BlockPos pos) {
return Services.PLATFORM.isModLoaded(mod);
}

@Override
public MapCodec<? extends PlacementCondition> codec() {
return CODEC;
}
}