package net.minecraft.world.level;

import net.minecraft.core.BlockPos;
import net.minecraft.core.SectionPos;

public interface LevelHeightAccessor {
	int getHeight();

	int getMinBuildHeight();

	default int getMaxBuildHeight() {
		return this.getMinBuildHeight() + this.getHeight();
	}

	default int getSectionsCount() {
		return this.getMaxSection() - this.getMinSection();
	}

	default int getMinSection() {
		return SectionPos.blockToSectionCoord(this.getMinBuildHeight());
	}

	default int getMaxSection() {
		return SectionPos.blockToSectionCoord(this.getMaxBuildHeight() - 1) + 1;
	}

	default boolean isOutsideBuildHeight(BlockPos pos) {
		return this.isOutsideBuildHeight(pos.getY());
	}

	default boolean isOutsideBuildHeight(int y) {
		return y < this.getMinBuildHeight() || y >= this.getMaxBuildHeight();
	}

	default int getSectionIndex(int y) {
		return this.getSectionIndexFromSectionY(SectionPos.blockToSectionCoord(y));
	}

	default int getSectionIndexFromSectionY(int sectionIndex) {
		return sectionIndex - this.getMinSection();
	}

	default int getSectionYFromSectionIndex(int sectionIndex) {
		return sectionIndex + this.getMinSection();
	}

	static LevelHeightAccessor create(int minBuildHeight, int height) {
		return new LevelHeightAccessor() {
			@Override
			public int getHeight() {
				return height;
			}

			@Override
			public int getMinBuildHeight() {
				return minBuildHeight;
			}
		};
	}
}