package net.minecraft.world.level.levelgen.placement; import com.mojang.serialization.MapCodec; import com.mojang.serialization.codecs.RecordCodecBuilder; import com.mojang.serialization.codecs.RecordCodecBuilder.Instance; import java.util.stream.Stream; import net.minecraft.core.BlockPos; import net.minecraft.util.RandomSource; import net.minecraft.world.level.levelgen.Heightmap; public class HeightmapPlacement extends PlacementModifier { public static final MapCodec CODEC = RecordCodecBuilder.mapCodec( p_191701_ -> p_191701_.group(Heightmap.Types.CODEC.fieldOf("heightmap").forGetter(p_191705_ -> p_191705_.heightmap)) .apply(p_191701_, HeightmapPlacement::new) ); private final Heightmap.Types heightmap; private HeightmapPlacement(Heightmap.Types p_191699_) { this.heightmap = p_191699_; } public static HeightmapPlacement onHeightmap(Heightmap.Types p_191703_) { return new HeightmapPlacement(p_191703_); } @Override public Stream getPositions(PlacementContext p_226344_, RandomSource p_226345_, BlockPos p_226346_) { int i = p_226346_.getX(); int j = p_226346_.getZ(); int k = p_226344_.getHeight(this.heightmap, i, j); return k > p_226344_.getMinY() ? Stream.of(new BlockPos(i, k, j)) : Stream.of(); } @Override public PlacementModifierType type() { return PlacementModifierType.HEIGHTMAP; } }