/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// Ball class
var Ball = Container.expand(function () {
  var self = Container.call(this);
  var ballGraphics = self.attachAsset('ball', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedY = 0;
  self.gravity = 0.5;
  self.jumpStrength = -10;
  self.update = function () {
    self.speedY += self.gravity;
    self.y += self.speedY;
    if (self.y > 2732 - ballGraphics.height / 2) {
      self.y = 2732 - ballGraphics.height / 2;
      self.speedY = 0;
    }
  };
  self.jump = function () {
    self.speedY = self.jumpStrength;
  };
});
// Obstacle class
var Obstacle = Container.expand(function () {
  var self = Container.call(this);
  var obstacleGraphics = self.attachAsset('obstacle', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedX = -5;
  self.update = function () {
    self.x += self.speedX;
    if (self.x < -obstacleGraphics.width / 2) {
      self.destroy();
    }
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x000000 //Init game with black background 
});

/****
* Game Code
****/
// Initialize variables
var ball;
var obstacles = [];
var score = 0;
var scoreTxt;
var obstacleInterval;
// Initialize game elements
function initGame() {
  ball = game.addChild(new Ball());
  ball.x = 2048 / 4;
  ball.y = 2732 / 2;
  scoreTxt = new Text2('0', {
    size: 150,
    fill: "#ffffff"
  });
  scoreTxt.anchor.set(0.5, 0);
  LK.gui.top.addChild(scoreTxt);
  obstacleInterval = LK.setInterval(createObstacle, 2000);
}
// Create obstacles
function createObstacle() {
  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);
}
// Handle game over
function gameOver() {
  LK.effects.flashScreen(0xff0000, 1000);
  LK.showGameOver();
}
// Handle touch down event
game.down = function (x, y, obj) {
  ball.jump();
};
// Update game state
game.update = function () {
  ball.update();
  for (var i = obstacles.length - 1; i >= 0; i--) {
    obstacles[i].update();
    if (ball.intersects(obstacles[i])) {
      gameOver();
    }
  }
  score += 1;
  scoreTxt.setText(score);
};
// Initialize game
initGame();