/****
* Classes
****/
// Define a simple Bullet class
var Bullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('bullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -5;
  self.update = function () {
    self.y += self.speed;
  };
});
// Define a simple Enemy class
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    // Enemy update logic
  };
});
//<Assets used in the game will automatically appear here>
// Define a simple Player class
var Player = Container.expand(function () {
  var self = Container.call(this);
  var playerGraphics = self.attachAsset('player', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    // Player update logic
  };
});

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

/****
* Game Code
****/
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
// Initialize enemies array
var enemies = [];
// Initialize bullets array
var bullets = [];
// Create score text
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Handle game move events
function handleMove(x, y, obj) {
  player.x = x;
  player.y = y;
}
game.move = handleMove;
// Handle game down events
game.down = function (x, y, obj) {
  handleMove(x, y, obj);
};
// Handle game up events
game.up = function (x, y, obj) {
  // No specific action on up event
};
// Game update logic
game.update = function () {
  // Update player
  player.update();
  // Update enemies
  for (var i = enemies.length - 1; i >= 0; i--) {
    enemies[i].update();
    if (enemies[i].intersects(player)) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Update bullets
  for (var j = bullets.length - 1; j >= 0; j--) {
    bullets[j].update();
    if (bullets[j].y < -50) {
      bullets[j].destroy();
      bullets.splice(j, 1);
    }
  }
  // Fire bullet
  if (LK.ticks % 30 == 0) {
    var newBullet = new Bullet();
    newBullet.x = player.x;
    newBullet.y = player.y;
    bullets.push(newBullet);
    game.addChild(newBullet);
  }
};
// Create enemies at intervals
var enemyInterval = LK.setInterval(function () {
  var newEnemy = new Enemy();
  newEnemy.x = Math.random() * 2048;
  newEnemy.y = -50;
  enemies.push(newEnemy);
  game.addChild(newEnemy);
}, 2000);