use glm;

type ChunkPos = struct {
	x: i32,
	z: i32,
};

type SectionPos = union {
	chunk: ChunkPos,
	struct {
		ChunkPos,
		y: i8,
	},
};

type BlockPos = struct {
	x: i32,
	y: i16,
	z: i32,
};

type Dir = enum u8 {
	WEST,
	EAST,
	DOWN,
	UP,
	NORTH,
	SOUTH,
};

fn block_section(pos: BlockPos) SectionPos = {
	return SectionPos {
		x = pos.x >> 4,
		y = (pos.y >> 4): i8,
		z = pos.z >> 4,
	};
};

fn section_origin(pos: SectionPos) glm::v3 = {
	return glm::v3_new(
		pos.x: f32 * 16.0,
		pos.y: f32 * 16.0,
		pos.z: f32 * 16.0,
	);
};

fn block_origin(pos: BlockPos) glm::v3 = {
	return glm::v3_new(pos.x: f32, pos.y: f32, pos.z: f32);
};