RelicCraft/src/main/java/com/thebrokenrail/reliccraft/structure/TimeTempleFeature.java

package com.thebrokenrail.reliccraft.structure;

import com.mojang.serialization.Codec;
import net.minecraft.structure.StructureManager;
import net.minecraft.structure.StructureStart;
import net.minecraft.util.BlockRotation;
import net.minecraft.util.math.BlockBox;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.ChunkPos;
import net.minecraft.world.biome.Biome;
import net.minecraft.world.biome.source.BiomeSource;
import net.minecraft.world.gen.ChunkRandom;
import net.minecraft.world.gen.chunk.ChunkGenerator;
import net.minecraft.world.gen.feature.DefaultFeatureConfig;
import net.minecraft.world.gen.feature.StructureFeature;

import java.util.Random;

public class TimeTempleFeature extends StructureFeature<DefaultFeatureConfig> {
    public TimeTempleFeature(Codec<DefaultFeatureConfig> codec) {
        super(codec);
    }

    @Override
    public StructureStartFactory<DefaultFeatureConfig> getStructureStartFactory() {
        return Start::new;
    }

    protected boolean shouldStartAt(ChunkGenerator chunkGenerator, BiomeSource biomeSource, long l, ChunkRandom chunkRandom, int i, int j, Biome biome, ChunkPos chunkPos, DefaultFeatureConfig defaultFeatureConfig) {
        int k = i >> 4;
        int m = j >> 4;
        chunkRandom.setSeed((long) (k ^ m << 4) ^ l);
        chunkRandom.nextInt();
        return chunkRandom.nextInt(5) == 0;
    }

    public static class Start extends StructureStart<DefaultFeatureConfig> {
        public Start(StructureFeature<DefaultFeatureConfig> feature, int chunkX, int chunkZ, BlockBox box, int references, long seed) {
            super(feature, chunkX, chunkZ, box, references, seed);
        }

        @Override
        public void init(ChunkGenerator chunkGenerator, StructureManager structureManager, int x, int z, Biome biome, DefaultFeatureConfig featureConfig) {
            int i = x * 16;
            int j = z * 16;
            BlockPos blockPos = new BlockPos(i, 90, j);
            BlockRotation blockRotation = BlockRotation.values()[random.nextInt(BlockRotation.values().length)];
            TimeTempleGenerator.addPieces(structureManager, blockPos, blockRotation, children);
            setBoundingBoxFromChildren();
        }
    }
}