// Core type definitions for Minecraft Clone

// ============ BLOCK TYPES ============
export enum BlockFace {
  BOTTOM = 0,
  TOP = 1,
  NORTH = 2,
  SOUTH = 3,
  WEST = 4,
  EAST = 5,
}

export interface BlockState {
  id: number;
  properties: Record<string, string>;
}

// ============ CHUNK TYPES ============
export interface ChunkPosition {
  x: number;
  z: number;
}

export interface ChunkData {
  position: ChunkPosition;
  blocks: Uint8Array; // CHUNK_WIDTH * CHUNK_HEIGHT * CHUNK_DEPTH
  heightMap: Uint16Array; // CHUNK_WIDTH * CHUNK_DEPTH
  dirty: boolean;
  meshVersion: number;
}

// ============ ITEM TYPES ============
export interface ItemStack {
  id: number;
  count: number;
  damage: number;
  nbt?: Record<string, unknown>;
}

// ============ ENTITY TYPES ============
export interface Entity {
  id: string;
  uuid: string;
  position: [number, number, number];
  velocity: [number, number, number];
  rotation: [number, number]; // yaw, pitch
  health: number;
  maxHealth: number;
  onGround: boolean;
}

// ============ PLAYER TYPES ============
export interface PlayerInventory {
  hotbar: (ItemStack | null)[];
  main: (ItemStack | null)[];
  armor: (ItemStack | null)[];
  offhand: ItemStack | null;
}

export interface Player extends Entity {
  gamemode: 'survival' | 'creative' | 'adventure' | 'spectator';
  inventory: PlayerInventory;
  selectedSlot: number;
  foodLevel: number;
  saturation: number;
  experience: number;
  experienceLevel: number;
  flying: boolean;
  sneaking: boolean;
  sprinting: boolean;
}

// ============ WORLD TYPES ============
export interface WeatherState {
  raining: boolean;
  thundering: boolean;
  rainTime: number;
  thunderTime: number;
}

export interface World {
  seed: number;
  time: number; // 0-24000
  gameTime: number;
  spawnPoint: [number, number, number];
  weather: WeatherState;
  dimension: 'overworld' | 'nether' | 'end';
}

// ============ BIOME TYPES ============
export interface Biome {
  id: number;
  name: string;
  temperature: number;
  moisture: number;
  depth: number;
  scale: number;
  grassColor: string;
  foliageColor: string;
  waterColor: string;
}

// ============ VERTEX TYPES ============
export interface ChunkVertex {
  position: [number, number, number];
  normal: [number, number, number];
  uv: [number, number];
  ao: number; // ambient occlusion
  light: number; // light level 0-15
}

export interface ChunkMeshData {
  vertices: Float32Array;
  indices: Uint32Array;
  normals: Float32Array;
  uvs: Float32Array;
  colors: Float32Array;
  ao: Float32Array;
}