/****
* Classes
****/
//<Write imports for supported plugins here>
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;
  };
  self.flap = function () {
    self.velocity = self.lift;
    LK.getSound('flap').play();
  };
});
var Pipe = Container.expand(function () {
  var self = Container.call(this);
  var pipeGraphics = self.attachAsset('pipe', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -5;
  self.update = function () {
    self.x += self.speed;
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x87ceeb // Init game with sky blue background
});

/****
* Game Code
****/
//<Assets used in the game will automatically appear here>
var bird = game.addChild(new Bird());
bird.x = 300;
bird.y = 1366; // Start in the middle of the screen 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 spawnPipe() {
  var pipeGap = 400;
  var pipeHeight = Math.random() * 800 + 400;
  var topPipe = new Pipe();
  topPipe.x = 2048;
  topPipe.y = pipeHeight / 2 - pipeGap / 2;
  pipes.push(topPipe);
  game.addChild(topPipe);
  var bottomPipe = new Pipe();
  bottomPipe.x = 2048;
  bottomPipe.y = pipeHeight / 2 + pipeGap / 2 + 800;
  pipes.push(bottomPipe);
  game.addChild(bottomPipe);
}
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  if (LK.ticks % 90 === 0) {
    spawnPipe();
  }
  for (var i = pipes.length - 1; i >= 0; i--) {
    var pipe = pipes[i];
    pipe.update();
    if (pipe.x < -100) {
      pipe.destroy();
      pipes.splice(i, 1);
      continue;
    }
    if (bird.intersects(pipe)) {
      LK.getSound('hit').play();
      LK.showGameOver();
      return;
    }
    if (!pipe.scored && pipe.x < bird.x) {
      pipe.scored = true;
      score++;
      LK.getSound('score').play();
      scoreTxt.setText(score);
    }
  }
  if (bird.y > 2732 || bird.y < 0) {
    LK.getSound('hit').play();
    LK.showGameOver();
  }
};