/****
* Classes
****/
// Assets will be automatically created and loaded during gameplay
// Bird class
var Bird = Container.expand(function () {
  var self = Container.call(this);
  var birdGraphics = self.attachAsset('bird', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.gravity = 0.5;
  self.lift = -10;
  self.velocity = 0;
  self.update = function () {
    self.velocity += self.gravity;
    self.y += self.velocity;
    if (self.y > 2732 - birdGraphics.height / 2) {
      self.y = 2732 - birdGraphics.height / 2;
      self.velocity = 0;
    }
    if (self.y < birdGraphics.height / 2) {
      self.y = birdGraphics.height / 2;
      self.velocity = 0;
    }
  };
  self.flap = function () {
    self.velocity = self.lift;
  };
});
// Coin class
var Coin = Container.expand(function () {
  var self = Container.call(this);
  var coinGraphics = self.attachAsset('coin', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -5;
  self.update = function () {
    self.x += self.speed;
    if (self.x < -coinGraphics.width / 2) {
      self.destroy();
    }
  };
});
// Obstacle class
var Obstacle = Container.expand(function () {
  var self = Container.call(this);
  var obstacleGraphics = self.attachAsset('obstacle', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -5;
  self.update = function () {
    self.x += self.speed;
    if (self.x < -obstacleGraphics.width / 2) {
      self.destroy();
    }
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x87CEEB // Sky blue background
});

/****
* Game Code
****/
var bird = game.addChild(new Bird());
bird.x = 2048 / 4;
bird.y = 2732 / 2;
var obstacles = [];
var coins = [];
var score = 0;
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function spawnObstacle() {
  var obstacle = new Obstacle();
  obstacle.x = 2048 + obstacle.width / 2;
  obstacle.y = Math.random() * (2732 - obstacle.height) + obstacle.height / 2;
  obstacles.push(obstacle);
  game.addChild(obstacle);
}
function spawnCoin() {
  var coin = new Coin();
  coin.x = 2048 + coin.width / 2;
  coin.y = Math.random() * (2732 - coin.height) + coin.height / 2;
  coins.push(coin);
  game.addChild(coin);
}
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  for (var i = obstacles.length - 1; i >= 0; i--) {
    obstacles[i].update();
    if (bird.intersects(obstacles[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  for (var j = coins.length - 1; j >= 0; j--) {
    coins[j].update();
    if (bird.intersects(coins[j])) {
      score += 1;
      scoreTxt.setText(score);
      coins[j].destroy();
      coins.splice(j, 1);
    }
  }
  if (LK.ticks % 120 == 0) {
    spawnObstacle();
  }
  if (LK.ticks % 180 == 0) {
    spawnCoin();
  }
};