/**** 
* Classes
****/ 
// Define a Hero class for the player's character
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 bullet = new HeroBullet();
		bullet.x = self.x;
		bullet.y = self.y;
		game.addChild(bullet);
		heroBullets.push(bullet);
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define a Bullet class for the hero's 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;
	};
});
// Define a Terrorist class for enemies
var Terrorist = Container.expand(function () {
	var self = Container.call(this);
	var terroristGraphics = self.attachAsset('terrorist', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	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 terrorists = [];
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 150;
// Function to spawn terrorists
function spawnTerrorist() {
	var terrorist = new Terrorist();
	terrorist.x = Math.random() * 2048;
	terrorist.y = -50;
	game.addChild(terrorist);
	terrorists.push(terrorist);
}
// 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 hero position
	if (hero.x < 0) {
		hero.x = 0;
	} else if (hero.x > 2048) {
		hero.x = 2048;
	}
	// Update terrorists
	for (var j = terrorists.length - 1; j >= 0; j--) {
		terrorists[j].update();
		if (terrorists[j].y > 2732) {
			terrorists[j].destroy();
			terrorists.splice(j, 1);
			// End the game if a terrorist gets out of the screen
			LK.showGameOver();
		}
	}
	// Check for collisions
	for (var k = heroBullets.length - 1; k >= 0; k--) {
		for (var l = terrorists.length - 1; l >= 0; l--) {
			if (heroBullets[k].intersects(terrorists[l])) {
				heroBullets[k].destroy();
				terrorists[l].destroy();
				heroBullets.splice(k, 1);
				terrorists.splice(l, 1);
				LK.setScore(LK.getScore() + 1); // Increment score by 1 for each terrorist killed
				scoreTxt.setText(LK.getScore()); // Update the score text
				break;
			}
		}
	}
};
// Handle touch events for shooting
var lastShot = 0;
game.down = function (x, y, obj) {
	if (LK.ticks - lastShot >= 60) {
		hero.shoot();
		lastShot = LK.ticks;
	}
};
// Handle touch events for moving
game.move = function (x, y, obj) {
	if (x > 0 && x < 2048) {
		hero.x = x;
	}
};
// Create a Text2 object to display the score
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF
});
// Update and display the score in the game
scoreTxt.setText(LK.getScore());
// Center the score text horizontally, anchor point set at the middle of its top edge
scoreTxt.anchor.set(0.5, 0);
// Add the score text to the GUI overlay at the top center of the screen
LK.gui.top.addChild(scoreTxt);
// Spawn terrorists at intervals
LK.setInterval(spawnTerrorist, 2000);