package net.minecraft.world.gen.placement;

import com.mojang.datafixers.Dynamic;
import java.util.Random;
import java.util.function.Function;
import java.util.stream.Stream;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.IWorld;
import net.minecraft.world.gen.ChunkGenerator;
import net.minecraft.world.gen.GenerationSettings;
import net.minecraft.world.gen.Heightmap;

public class EndGateway extends Placement<NoPlacementConfig> {
   public EndGateway(Function<Dynamic<?>, ? extends NoPlacementConfig> p_i51373_1_) {
      super(p_i51373_1_);
   }

   public Stream<BlockPos> getPositions(IWorld worldIn, ChunkGenerator<? extends GenerationSettings> generatorIn, Random random, NoPlacementConfig configIn, BlockPos pos) {
      if (random.nextInt(700) == 0) {
         int i = random.nextInt(16);
         int j = random.nextInt(16);
         int k = worldIn.getHeight(Heightmap.Type.MOTION_BLOCKING, pos.add(i, 0, j)).getY();
         if (k > 0) {
            int l = k + 3 + random.nextInt(7);
            return Stream.of(pos.add(i, l, j));
         }
      }

      return Stream.empty();
   }
}