export const TEXTURE_SIZE = 16;

export const TICKS_PER_SECOND = 20;
export const TICK_DELTA = 1 / TICKS_PER_SECOND;

export const SLOT_SIZE = 18 * 3;

export interface SpriteRegion {
	x: number;
	y: number;
}

export const faces = ["west", "east", "bottom", "top", "north", "south"] as const;
export type Faces = typeof faces[number];

export const AIR = 0;
export const VOID = 0xFFFFFFFF;

export const ID_MASK = 0xFFFF;
export const STATE_SHIFT = 16;

export const CHUNK_SIZE = 16;
export const CHUNK_HEIGHT = 128;
export const CHUNK_AREA = CHUNK_SIZE * CHUNK_SIZE;

// where a block placed against each face of another block goes
export const FACE_OFFSETS: Record<Faces, { x: number; y: number; z: number }> = {
	top: { x: 0, y: 1, z: 0 },
	bottom: { x: 0, y: -1, z: 0 },
	north: { x: 0, y: 0, z: -1 },
	south: { x: 0, y: 0, z: 1 },
	west: { x: -1, y: 0, z: 0 },
	east: { x: 1, y: 0, z: 0 },
};