/****
* 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.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;
  };
});
// Pipe class
var Pipe = Container.expand(function () {
  var self = Container.call(this);
  var topPipe = self.attachAsset('pipe', {
    anchorX: 0.5,
    anchorY: 1.0
  });
  var bottomPipe = self.attachAsset('pipe', {
    anchorX: 0.5,
    anchorY: 0.0
  });
  self.gap = 400;
  self.speed = 5;
  self.update = function () {
    self.x -= self.speed;
    if (self.x < -topPipe.width) {
      self.destroy();
    }
  };
  self.setPosition = function (x, y) {
    self.x = x;
    topPipe.y = y - self.gap / 2;
    bottomPipe.y = y + self.gap / 2;
  };
});

/****
* 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 pipes = [];
var score = 0;
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function addPipe() {
  var pipe = new Pipe();
  var pipeY = Math.random() * (2732 - 800) + 400;
  pipe.setPosition(2048, pipeY);
  pipes.push(pipe);
  game.addChild(pipe);
}
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  for (var i = pipes.length - 1; i >= 0; i--) {
    pipes[i].update();
    if (pipes[i].x < bird.x && !pipes[i].passed) {
      pipes[i].passed = true;
      score++;
      scoreTxt.setText(score);
    }
    if (bird.intersects(pipes[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  if (LK.ticks % 90 == 0) {
    addPipe();
  }
};