/**** 
* Classes
****/ 
// Bullet class representing the bullets fired by the player
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
	};
});
// Life class representing the player's lives
var Life = Container.expand(function () {
	var self = Container.call(this);
	var lifeGraphics = self.attachAsset('Life', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
// Object class representing the object that stays below the screen and moves to where the click is
var Object = Container.expand(function () {
	var self = Container.call(this);
	var objectGraphics = self.attachAsset('object', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Add any object-specific update logic here
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Target class representing the targets to be hit
var Target = Container.expand(function () {
	var self = Container.call(this);
	var targetGraphics = self.attachAsset('target', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Initialize random speed and direction for the target
	self.speedX = (Math.random() - 0.5) * 10;
	self.speedY = (Math.random() - 0.5) * 10;
	self.update = function () {
		// Add any target-specific update logic here
		self.x += self.speedX;
		self.y += self.speedY;
		// Check if target is off-screen, then change direction
		if (self.x < 0 || self.x > 2048) {
			self.speedX *= -1;
		}
		if (self.y < 0 || self.y > 2732) {
			self.speedY *= -1;
		}
	};
});

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

/**** 
* Game Code
****/ 
var background = game.attachAsset('background', {
	anchorX: 0,
	anchorY: 0
});
// Initialize variables
var targets = [];
var bullets = [];
var score = 0;
var object = new Object();
object.y = 2732;
game.addChild(object);
// Initialize the player's lives
var lives = [];
for (var i = 0; i < 3; i++) {
	var life = new Life();
	life.x = 100 + i * 100;
	life.y = 100;
	lives.push(life);
	game.addChild(life);
}
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: 0xFFFFFF,
	font: "'Comic Sans MS', cursive, sans-serif"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Function to spawn a new target
function spawnTarget() {
	var newTarget = new Target();
	newTarget.x = Math.random() * 2048;
	newTarget.y = Math.random() * 1000 + 500;
	targets.push(newTarget);
	game.addChild(newTarget);
}
// Function to handle shooting
function shoot(x, y) {
	var newBullet = new Bullet();
	newBullet.x = x;
	newBullet.y = y;
	bullets.push(newBullet);
	game.addChild(newBullet);
}
// Handle game updates
game.update = function () {
	// End the game when all lives are lost
	if (lives.length === 0) {
		LK.showGameOver();
		return;
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		bullet.update();
		// Check if bullet is off-screen
		if (bullet.y < -50) {
			bullet.destroy();
			bullets.splice(i, 1);
			// Destroy a life
			var life = lives.pop();
			life.destroy();
			// Play the LoseLife sound
			LK.getSound('LoseLife').play();
			continue;
		}
		// Check for collisions with targets
		for (var j = targets.length - 1; j >= 0; j--) {
			var target = targets[j];
			if (bullet.intersects(target)) {
				// Increase score
				score += 10;
				scoreTxt.setText('Score: ' + score);
				// Destroy bullet and target
				bullet.destroy();
				bullets.splice(i, 1);
				target.destroy();
				targets.splice(j, 1);
				// Play the DestroyTarget sound
				LK.getSound('DestroyTarget').play();
				// Spawn a new target
				spawnTarget();
				// Increase the speed of targets for each target destroyed
				for (var t = 0; t < targets.length; t++) {
					targets[t].speedX *= 1.1;
					targets[t].speedY *= 1.1;
				}
				break;
			}
		}
	}
};
// Handle touch or mouse down events
game.down = function (x, y, obj) {
	object.x = x;
	if (bullets.length === 0) {
		shoot(object.x, object.y);
	}
};
// Start the game
spawnTarget();