package net.minecraft.world.level.levelgen.feature;

import com.mojang.serialization.Codec;
import net.minecraft.core.BlockPos;
import net.minecraft.util.Mth;
import net.minecraft.util.RandomSource;
import net.minecraft.world.level.WorldGenLevel;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.levelgen.feature.configurations.NoneFeatureConfiguration;

public class IceSpikeFeature extends Feature<NoneFeatureConfiguration> {
	public IceSpikeFeature(Codec<NoneFeatureConfiguration> codec) {
		super(codec);
	}

	@Override
	public boolean place(FeaturePlaceContext<NoneFeatureConfiguration> context) {
		BlockPos blockPos = context.origin();
		RandomSource randomSource = context.random();
		WorldGenLevel worldGenLevel = context.level();

		while (worldGenLevel.isEmptyBlock(blockPos) && blockPos.getY() > worldGenLevel.getMinY() + 2) {
			blockPos = blockPos.below();
		}

		if (!worldGenLevel.getBlockState(blockPos).is(Blocks.SNOW_BLOCK)) {
			return false;
		} else {
			blockPos = blockPos.above(randomSource.nextInt(4));
			int i = randomSource.nextInt(4) + 7;
			int j = i / 4 + randomSource.nextInt(2);
			if (j > 1 && randomSource.nextInt(60) == 0) {
				blockPos = blockPos.above(10 + randomSource.nextInt(30));
			}

			for (int k = 0; k < i; k++) {
				float f = (1.0F - (float)k / i) * j;
				int l = Mth.ceil(f);

				for (int m = -l; m <= l; m++) {
					float g = Mth.abs(m) - 0.25F;

					for (int n = -l; n <= l; n++) {
						float h = Mth.abs(n) - 0.25F;
						if ((m == 0 && n == 0 || !(g * g + h * h > f * f)) && (m != -l && m != l && n != -l && n != l || !(randomSource.nextFloat() > 0.75F))) {
							BlockState blockState = worldGenLevel.getBlockState(blockPos.offset(m, k, n));
							if (blockState.isAir() || isDirt(blockState) || blockState.is(Blocks.SNOW_BLOCK) || blockState.is(Blocks.ICE)) {
								this.setBlock(worldGenLevel, blockPos.offset(m, k, n), Blocks.PACKED_ICE.defaultBlockState());
							}

							if (k != 0 && l > 1) {
								blockState = worldGenLevel.getBlockState(blockPos.offset(m, -k, n));
								if (blockState.isAir() || isDirt(blockState) || blockState.is(Blocks.SNOW_BLOCK) || blockState.is(Blocks.ICE)) {
									this.setBlock(worldGenLevel, blockPos.offset(m, -k, n), Blocks.PACKED_ICE.defaultBlockState());
								}
							}
						}
					}
				}
			}

			int k = j - 1;
			if (k < 0) {
				k = 0;
			} else if (k > 1) {
				k = 1;
			}

			for (int o = -k; o <= k; o++) {
				for (int l = -k; l <= k; l++) {
					BlockPos blockPos2 = blockPos.offset(o, -1, l);
					int p = 50;
					if (Math.abs(o) == 1 && Math.abs(l) == 1) {
						p = randomSource.nextInt(5);
					}

					while (blockPos2.getY() > 50) {
						BlockState blockState2 = worldGenLevel.getBlockState(blockPos2);
						if (!blockState2.isAir()
							&& !isDirt(blockState2)
							&& !blockState2.is(Blocks.SNOW_BLOCK)
							&& !blockState2.is(Blocks.ICE)
							&& !blockState2.is(Blocks.PACKED_ICE)) {
							break;
						}

						this.setBlock(worldGenLevel, blockPos2, Blocks.PACKED_ICE.defaultBlockState());
						blockPos2 = blockPos2.below();
						if (--p <= 0) {
							blockPos2 = blockPos2.below(randomSource.nextInt(5) + 1);
							p = randomSource.nextInt(5);
						}
					}
				}
			}

			return true;
		}
	}
}