//設定用
const Config = {
  //画面の解像度
  Screen: {
    Width: 512,//幅
    Height: 512,//高さ
    BackGroundColor: 0x444444,//背景色
  },
  Keys: { //キーボード入力
    Up: "w",
    Right: "d",
    Down: "s",
    Left: "a",
    A: "n",
    B: "m",
    Start: "Enter"
  },
  //vpadType: DirKey8way,
  vpadType: DirKey4way /*切り替えできます*/
}

//読みこむデータリスト(名前：ファイルパス)
const Resource = {
  Player: 'https://dl.dropbox.com/s/myi6mgjgsyh5e7y/player.png',
}

//上のリストを読み込みやすい形に変えてます
const assets = [];
for (let key in Resource) {
  assets.push(Resource[key]);
}

let core;//ゲームの基幹プログラム用の変数
let inputManager;

//ブラウザの読み込みが完了したら実行されます
window.onload = () => {
  //設定した画面サイズでcoreを作成
  core = new Game(Config.Screen.Width, Config.Screen.Height, Config.Screen.BackGroundColor);
  inputManager = new InputManager();

  //データのロード
  core.preload(assets);

  //読み込み完了でメインシーンに切り替わります
  core.onload = () => {
    core.replaceScene(new MainScene());
  }
}


let player;
//メインシーン
class MainScene extends Container {
  constructor(){
    super();

    player = new Player(64, 64);
    this.addChild(player);
  }
  update(delta){
    super.update(delta);
    inputManager.gamePad.update();

    if(inputManager.checkButton("Start") == inputManager.keyStatus.DOWN){
      core.pushScene(new PauseScene());
    }   
  }
}

//全キャラクター共通基本クラス
class Actor extends EnchantSprite {
  constructor(w, h){
    super(w, h);
    this.anchor.set(0.5, 1);//Y座標の中心は足元に
    this.vx = 0;
    this.vy = 0;
    this.fpX = 0;//小数点以下保存用
    this.fpY = 0;

    //アニメーション用
    this.animation = {
      isPlayAuto: false,
      frameNumbers: [],
      intervals: [],
      type: null,
      index: 0,
      count: 0,
      data: {}
    }
  }
  //アニメーション切り替えプログラム
  changeAnimationPattern(type){
    const anim = this.animation;
    anim.frameNumbers = anim.data[type].frameNumbers;
    anim.intervals = anim.data[type].intervals;
    anim.type = type;
    anim.index = 0;
    anim.count = 0;
    this.frameNumber = anim.frameNumbers[0];
  }
  //キャラの座標から小数点を抜く
  posRemoveFractionalPart(){
    const x = this.x | 0;//小数点以下を切り捨て
    this.fpX = this.x - x;
    this.x = x;
    const y = this.y | 0;
    this.fpY = this.y - y;
    this.y = y;
  }
  //キャラの座標に小数点以下を戻す
  posRestoreFractionalPart(){
    this.x += this.fpX;
    this.y += this.fpY;
  }
  update(delta){
    super.update(delta);
    //自動アニメーション処理
    const anim = this.animation;
    if(anim.isPlayAuto && ++anim.count > anim.intervals[anim.index]){
      if(++anim.index >= anim.intervals.length){
        anim.index = 0;
      }
      this.frameNumber = anim.frameNumbers[anim.index];
      anim.count = 0;
    }
  }
}

//プレイヤークラス
class Player extends Actor {
  constructor(w, h){
    super(w, h);
    this.image = core.resources[Resource.Player].texture; 
    this.position.set(Config.Screen.Width*0.5, Config.Screen.Height*0.75);
    this.maxSpeed = 4;
    this.acceleration = 0.24;
    this.friction = 0.08;
    this.isOnGround = true;
    this.gravity = 0.3;

    this.animation.data = {
      stand: {
        frameNumbers: [1],
        intervals: [100],
      },
      walk: {
        frameNumbers: [0, 1, 2, 1],
        intervals: [8, 8, 8, 8],
      },
      jump: {
        frameNumbers: [4],
        intervals: [100],
      },
      fall: {
        frameNumbers: [5],
        intervals: [100],
      }
    }
    this.animation.type = 'stand';
    this.animation.isPlayAuto = true;
  }
  update(delta){
    super.update(delta);
    this.posRestoreFractionalPart();//一番最初に小数点を戻す 

    const btn = inputManager.checkButton('A');
    if(btn == inputManager.keyStatus.DOWN){
      if(this.isOnGround){
        this.vy = -8;
        this.changeAnimationPattern('jump');
      }
    }
    if(btn == inputManager.keyStatus.RELEASE){
      if(this.vy < 0){
        this.vy /= 2;
      }
    }
    this.isOnGround = false;
    this.vy += this.gravity;
    this.y += this.vy;
    if(this.y > Config.Screen.Height*0.75){
      this.y = Config.Screen.Height*0.75;
      this.vy = 0;
      this.isOnGround = true;
      if(this.animation.type != 'walk'){
        this.changeAnimationPattern('walk');
      }
      
    }else if(this.vy > 0 && this.animation.type != 'fall'){
      this.changeAnimationPattern('fall');
    }

    switch(inputManager.checkDirection()){
      case inputManager.keyDirections.RIGHT:
        if(this.isOnGround && this.vx == 0){
          this.changeAnimationPattern('walk');
        }
        this.scale.x = 1;
        this.vx += this.acceleration;
        this.vx = this.vx > this.maxSpeed ? this.maxSpeed : this.vx;
        break;
      case inputManager.keyDirections.LEFT:
        if(this.isOnGround && this.vx == 0){
          this.changeAnimationPattern('walk');
        }
        this.scale.x = -1;
        this.vx -= this.acceleration;
        this.vx = this.vx < -this.maxSpeed ? -this.maxSpeed : this.vx;
        break;
      case inputManager.keyDirections.DOWN:
        break;
      default:
        break;
    }

    
    //摩擦的なもの(減速させる)
    if(this.vx > this.friction){
      this.vx -= this.friction;
    }else if(this.vx < -this.friction){
      this.vx += this.friction;
    }else{
      this.vx = 0;
      if(this.isOnGround){
        this.changeAnimationPattern('stand');
      }
    }
    this.x += this.vx;
    this.posRemoveFractionalPart();//一番最後に小数点を取り除く
  }
}