/****
* Classes
****/
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins 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.movement = 0;
  self.gravity = 0.5;
  self.update = function () {
    self.movement += self.gravity;
    self.y += self.movement;
  };
  self.flap = function () {
    self.movement = -8;
  };
});
// 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.speed = 3;
  self.setPosition = function (x, y) {
    topPipe.x = x;
    topPipe.y = y - 150;
    bottomPipe.x = x;
    bottomPipe.y = y + 150;
  };
  self.update = function () {
    topPipe.x -= self.speed;
    bottomPipe.x -= self.speed;
  };
  self.isOffScreen = function () {
    return topPipe.x + topPipe.width < 0;
  };
  self.intersects = function (bird) {
    return bird.intersects(topPipe) || bird.intersects(bottomPipe);
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x0096FF // Init game with blue background
});

/****
* Game Code
****/
var bird = game.addChild(new Bird());
bird.x = 100;
bird.y = 1366; // Centered vertically
var pipes = [];
var score = 0;
var scoreTxt = new Text2('0', {
  size: 150,
  fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function createPipe() {
  var pipe = new Pipe();
  var pipeY = Math.random() * (2732 - 300) + 150;
  pipe.setPosition(2048, pipeY);
  pipes.push(pipe);
  game.addChild(pipe);
}
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  if (bird.y <= 0 || bird.y >= 2732) {
    LK.showGameOver();
  }
  for (var i = pipes.length - 1; i >= 0; i--) {
    var pipe = pipes[i];
    pipe.update();
    if (pipe.isOffScreen()) {
      pipe.destroy();
      pipes.splice(i, 1);
      score++;
      scoreTxt.setText(score);
    }
    if (pipe.intersects(bird)) {
      LK.showGameOver();
    }
  }
  if (LK.ticks % 90 === 0) {
    createPipe();
  }
};