/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// Bird class
var Bird = Container.expand(function () {
  var self = Container.call(this);
  var birdGraphics = self.attachAsset('bird', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedY = 0;
  self.gravity = 0.5;
  self.lift = -10;
  self.update = function () {
    self.speedY += self.gravity;
    self.y += self.speedY;
    if (self.y > 2732 - birdGraphics.height / 2) {
      self.y = 2732 - birdGraphics.height / 2;
      self.speedY = 0;
    }
    if (self.y < birdGraphics.height / 2) {
      self.y = birdGraphics.height / 2;
      self.speedY = 0;
    }
  };
  self.flap = function () {
    self.speedY = self.lift;
  };
});
// Spike class
var Spike = Container.expand(function () {
  var self = Container.call(this);
  var spikeGraphics = self.attachAsset('spike', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedX = -5;
  self.update = function () {
    self.x += self.speedX;
    if (self.x < -spikeGraphics.width / 2) {
      self.destroy();
    }
  };
});

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

/****
* Game Code
****/
var bird = game.addChild(new Bird());
bird.x = 2048 / 4;
bird.y = 2732 / 2;
var spikes = [];
var score = 0;
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function spawnSpike() {
  var spike = new Spike();
  spike.x = 2048 + spike.width / 2;
  spike.y = Math.random() * (2732 - spike.height) + spike.height / 2;
  spikes.push(spike);
  game.addChild(spike);
}
function handleMove(x, y, obj) {
  bird.flap();
}
game.down = handleMove;
game.update = function () {
  bird.update();
  for (var i = spikes.length - 1; i >= 0; i--) {
    spikes[i].update();
    if (bird.intersects(spikes[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  if (LK.ticks % 90 == 0) {
    spawnSpike();
  }
  scoreTxt.setText(LK.getScore());
};
LK.setInterval(function () {
  LK.setScore(LK.getScore() + 1);
}, 1000);