var game = new Phaser.Game(288, 505, Phaser.AUTO, 'flappyDiv');
var mainState = {

    preload: function() {
	game.load.image('background', 'assets/background.png');
	game.load.image('ground', 'assets/ground.png');
	game.load.spritesheet('bird', 'assets/bird.png', 34, 24, 3);
	game.load.image('pipe', 'assets/pipe.png');
	game.load.audio('jump', 'assets/flap.wav');
    },

    create: function() {

       this.background = this.game.add.sprite(0, 0, 'background');

       this.ground = this.game.add.tileSprite(0, 400, 288, 112, 'ground');
       this.ground.autoScroll(-200, 0);

       this.bird = this.game.add.sprite(100, 245, 'bird');
       this.bird.animations.add('bird', [0, 1, 2], 12, true);
       this.bird.animations.play('bird');

       game.physics.startSystem(Phaser.Physics.ARCADE);
       game.physics.arcade.enableBody(this.bird);
       game.physics.arcade.enableBody(this.ground);
       this.ground.body.immovable = true;
       this.bird.body.gravity.y = 1000;

       var spaceKey = this.game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
       spaceKey.onDown.add(this.jump, this);

       this.pipes = game.add.group();
       this.pipes.enableBody = true;
       this.pipes.createMultiple(20, 'pipe');

       this.timer = game.time.events.loop(1600, this.addLongPipes, this);

       this.score = 0;
       this.labelScore = game.add.text(20, 20, "0", { font: "30px Arial", fill: "#ffffff" });

       this.bird.anchor.setTo(0.5, 0.5);

       this.jumpSound = game.add.audio('jump');

    },

    update: function() {

      game.physics.arcade.overlap(this.bird, this.pipes, this.overlapPipe, null, this);
      game.physics.arcade.collide(this.bird, this.ground);

      if (this.bird.inWorld == false){
        	this.restartGame();
      }

     if (this.bird.angle < 20) {
      	this.bird.angle += 1;
      }

    },


    overlapPipe: function() {

       game.time.events.remove(this.timer);

       this.pipes.forEachAlive(function(p){
          p.body.velocity.x = 0;
       }, this);

       this.bird.alive = false;
    },

    jump: function() {

	if (this.bird.alive == false) {
         return;
        }

    	this.bird.body.velocity.y = -350;

	var animation = game.add.tween(this.bird);
	animation.to({angle: -20}, 100);
	animation.start();

	this.jumpSound.play();
    },

    restartGame: function() {
       game.state.start('main');
    },

    addShotPipe: function(x, y) {

     	var pipe = this.pipes.getFirstDead();
     	pipe.reset(x, y);
     	pipe.body.velocity.x = -200;

     	pipe.checkWorldBounds = true;
     	pipe.outOfBoundsKill = true;

    },

    addLongPipes: function() {

     var blank = Math.floor(Math.random() * 5) + 1;
     for (var i = 0; i < 8; i++){
      	if (i != blank && i != blank + 1){
       		this.addShotPipe(400, (i * 60) + 10);
       	}
     }

     this.score += 1;
     this.labelScore.text = this.score;

    },

};

game.state.add('main', mainState);
game.state.start('main');