/****
* Classes
****/
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins 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.speed = 10;
  self.direction = {
    x: 0,
    y: -1
  };
  self.update = function () {
    self.x += self.direction.x * self.speed;
    self.y += self.direction.y * self.speed;
  };
});
// Goalkeeper class
var Goalkeeper = Container.expand(function () {
  var self = Container.call(this);
  var keeperGraphics = self.attachAsset('goalkeeper', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.x += self.speed;
    if (self.x > 2048 - keeperGraphics.width / 2 || self.x < keeperGraphics.width / 2) {
      self.speed *= -1;
    }
  };
});

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

/****
* Game Code
****/
// Initialize variables
var score = 0;
var missedShots = 0;
var maxMissedShots = 5;
var ball = null;
var goalkeeper = null;
var scoreTxt = null;
// Initialize game elements
function initGame() {
  // Create and position the ball
  ball = game.addChild(new Ball());
  ball.x = 2048 / 2;
  ball.y = 2732 - 200;
  // Create and position the goalkeeper
  goalkeeper = game.addChild(new Goalkeeper());
  goalkeeper.x = 2048 / 2;
  goalkeeper.y = 200;
  // Create and position the score text
  scoreTxt = new Text2('Score: 0', {
    size: 100,
    fill: 0xFFFFFF
  });
  scoreTxt.anchor.set(0.5, 0);
  LK.gui.top.addChild(scoreTxt);
}
// Handle game updates
game.update = function () {
  if (ball) {
    ball.update();
    if (ball.y < 0) {
      missedShots++;
      resetBall();
      if (missedShots >= maxMissedShots) {
        LK.showGameOver();
      }
    } else if (ball.intersects(goalkeeper)) {
      score += 10;
      scoreTxt.setText('Score: ' + score);
      resetBall();
      increaseDifficulty();
    }
  }
  if (goalkeeper) {
    goalkeeper.update();
  }
};
// Reset the ball position
function resetBall() {
  ball.x = 2048 / 2;
  ball.y = 2732 - 200;
  ball.direction = {
    x: 0,
    y: -1
  };
}
// Increase difficulty by speeding up the goalkeeper
function increaseDifficulty() {
  goalkeeper.speed += 0.5;
}
// Handle touch events to kick the ball
game.down = function (x, y, obj) {
  if (ball) {
    var angle = Math.atan2(y - ball.y, x - ball.x);
    ball.direction = {
      x: Math.cos(angle),
      y: Math.sin(angle)
    };
  }
};
// Initialize the game
initGame();