/****
* Classes
****/
// Enemy class
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.shoot = function () {
    var newBullet = new EnemyBullet();
    newBullet.x = self.x;
    newBullet.y = self.y;
    enemyBullets.push(newBullet);
    game.addChild(newBullet);
  };
});
// Bullet class for enemy bullets
var EnemyBullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('enemyBullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.y += self.speed;
  };
});
// Hero class
var Hero = Container.expand(function () {
  var self = Container.call(this);
  var heroGraphics = self.attachAsset('hero', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.shoot = function () {
    var newBullet = new HeroBullet();
    newBullet.x = self.x;
    newBullet.y = self.y;
    heroBullets.push(newBullet);
    game.addChild(newBullet);
  };
});
// Assets will be automatically created and loaded during gameplay
// Bullet class for hero bullets
var HeroBullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('heroBullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -10;
  self.update = function () {
    self.y += self.speed;
  };
});

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

/****
* Game Code
****/
// Initialize arrays and variables
var heroBullets = [];
var enemyBullets = [];
var hero;
var enemy;
var scoreTxt;
// Initialize hero
hero = new Hero();
hero.x = 2048 / 2;
hero.y = 2732 - 200;
game.addChild(hero);
// Initialize enemy
enemy = new Enemy();
enemy.x = 2048 / 2;
enemy.y = 200;
game.addChild(enemy);
// Initialize score text
scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Handle game updates
game.update = function () {
  // Update hero bullets
  for (var i = heroBullets.length - 1; i >= 0; i--) {
    heroBullets[i].update();
    if (heroBullets[i].y < -50) {
      heroBullets[i].destroy();
      heroBullets.splice(i, 1);
    }
  }
  // Update enemy bullets
  for (var j = enemyBullets.length - 1; j >= 0; j--) {
    enemyBullets[j].update();
    if (enemyBullets[j].y > 2732 + 50) {
      enemyBullets[j].destroy();
      enemyBullets.splice(j, 1);
    }
  }
  // Check for collisions
  for (var k = heroBullets.length - 1; k >= 0; k--) {
    if (heroBullets[k].intersects(enemy)) {
      heroBullets[k].destroy();
      heroBullets.splice(k, 1);
      // Update score
      LK.setScore(LK.getScore() + 1);
      scoreTxt.setText(LK.getScore());
    }
  }
  for (var l = enemyBullets.length - 1; l >= 0; l--) {
    if (enemyBullets[l].intersects(hero)) {
      enemyBullets[l].destroy();
      enemyBullets.splice(l, 1);
      // Flash screen red for 1 second to show game over
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Hero shooting
  if (LK.ticks % 20 == 0) {
    hero.shoot();
  }
  // Enemy shooting
  if (LK.ticks % 60 == 0) {
    enemy.shoot();
  }
};
// Handle touch events for hero movement
game.move = function (x, y, obj) {
  hero.x = x;
  hero.y = y;
};
game.down = function (x, y, obj) {
  hero.x = x;
  hero.y = y;
};
game.up = function (x, y, obj) {
  // No action needed on touch up
};