/****
* Classes
****/
// Pitfall class
var Pitfall = Container.expand(function () {
  var self = Container.call(this);
  var pitfallGraphics = self.attachAsset('pitfall', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.move = function () {
    self.y += 2; // Move down the screen
  };
});
// Assets will be automatically created based on usage in the code.
// Player class
var Player = Container.expand(function () {
  var self = Container.call(this);
  var playerGraphics = self.attachAsset('player', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.health = 100;
  self.move = function (x, y) {
    self.x += x;
    self.y += y;
  };
  self.updateHealth = function (amount) {
    self.health += amount;
    if (self.health <= 0) {
      LK.showGameOver();
    }
  };
});

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

/****
* Game Code
****/
var player = game.addChild(new Player());
player.x = 1024; // Center horizontally
player.y = 2400; // Start near the bottom
var pitfalls = [];
// Touch event to move player
game.on('down', function (obj) {
  var pos = obj.event.getLocalPosition(game);
  var moveX = pos.x - player.x;
  var moveY = pos.y - player.y;
  player.move(moveX, moveY);
});
// Generate pitfalls
LK.setInterval(function () {
  var pitfall = new Pitfall();
  pitfall.x = Math.random() * 2048; // Random position across the width
  pitfall.y = 0; // Start from the top
  pitfalls.push(pitfall);
  game.addChild(pitfall);
}, 2000); // Every 2 seconds
// Game tick
LK.on('tick', function () {
  // Move pitfalls
  for (var i = pitfalls.length - 1; i >= 0; i--) {
    pitfalls[i].move();
    // Check collision with player
    if (pitfalls[i].intersects(player)) {
      player.updateHealth(-10); // Reduce health on collision
      pitfalls[i].destroy();
      pitfalls.splice(i, 1);
    }
    // Remove off-screen pitfalls
    else if (pitfalls[i].y > 2732) {
      pitfalls[i].destroy();
      pitfalls.splice(i, 1);
    }
  }
});