/****
* Classes
****/
// Hero class
var Hero = Container.expand(function () {
  var self = Container.call(this);
  var heroGraphics = self.createAsset('hero', 'Hero character', 0.5, 0.5);
  self.growth = 0.05;
  self.maxScale = 5;
  self.speed = 5;
  self.grow = function () {
    if (self.scale.x < self.maxScale) {
      self.scale.x += self.growth;
      self.scale.y += self.growth;
    }
  };
  self.move = function (x, y) {
    self.x = x;
    self.y = y;
  };
});
// Obstacle class
var Obstacle = Container.expand(function () {
  var self = Container.call(this);
  var obstacleGraphics = self.createAsset('obstacle', 'Obstacle', 0.5, 0.5);
  self.speed = 2;
  self.move = function () {
    self.y += self.speed;
  };
});

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

/****
* Game Code
****/
// Initialize important asset arrays
var obstacles = [];
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 200; // Start the hero near the bottom of the screen
// Game variables
var isGameOver = false;
var score = 0;
var scoreTxt = new Text2(score.toString(), {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create obstacles at intervals
var obstacleTimer = LK.setInterval(function () {
  var obstacle = new Obstacle();
  obstacle.x = Math.random() * 2048;
  obstacle.y = -50; // Start above the screen
  obstacles.push(obstacle);
  game.addChild(obstacle);
}, 2000);
// Handle touch move events
function handleMove(obj) {
  var pos = obj.event.getLocalPosition(game);
  hero.move(pos.x, pos.y);
}
game.on('move', handleMove);
// Game tick event
LK.on('tick', function () {
  if (isGameOver) {
    return;
  }
  // Grow the hero
  hero.grow();
  // Move obstacles and check for collisions
  for (var i = obstacles.length - 1; i >= 0; i--) {
    obstacles[i].move();
    if (obstacles[i].y > 2732 + 50) {
      obstacles[i].destroy();
      obstacles.splice(i, 1);
    } else if (hero.intersects(obstacles[i])) {
      isGameOver = true;
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Update score
  score++;
  scoreTxt.setText(score.toString());
});
// Game over function
function gameOver() {
  isGameOver = true;
  LK.clearInterval(obstacleTimer);
  LK.effects.flashScreen(0xff0000, 1000);
  LK.showGameOver();
}
// Touch end event to stop moving the hero
game.on('up', function () {
  // Stop moving the hero
});