/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Alien = Container.expand(function () {
	var self = Container.call(this);
	var alienGraphics = self.attachAsset('alien', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Banana = Container.expand(function () {
	var self = Container.call(this);
	var bananaGraphics = self.attachAsset('banana', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Meteor = Container.expand(function () {
	var self = Container.call(this);
	var meteorGraphics = self.attachAsset('meteor', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var StartMenu = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('startMenuBackground', {
		x: 0,
		y: 0
	});
	var titleText = new Text2('BANANA METEOR DEFENSE', {
		size: 120,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 2048 / 2;
	titleText.y = 2732 / 2 - 200;
	self.addChild(titleText);
	var playButton = new Text2('PLAY', {
		size: 100,
		fill: 0x00FF00
	});
	playButton.anchor.set(0.5, 0.5);
	playButton.x = 2048 / 2;
	playButton.y = 2732 / 2 + 100;
	self.addChild(playButton);
	playButton.down = function (x, y, obj) {
		LK.stopMusic();
		startGame();
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var spaceBackground = game.attachAsset('spaceBackground', {
	x: 0,
	y: 0
});
var banana = game.addChild(new Banana());
banana.x = 2048 / 2;
banana.y = 2732 - 150;
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var bullets = [];
var meteors = [];
var aliens = [];
var meteorsPassed = 0;
var gameStarted = false;
var meteorSpawnTimer = 0;
var meteorSpawnInterval = 90;
var alienSpawnTimer = 0;
var alienSpawnInterval = 120;
var startMenu = null;
function startGame() {
	if (startMenu) {
		startMenu.destroy();
		startMenu = null;
	}
	gameStarted = true;
}
function showStartMenu() {
	gameStarted = false;
	startMenu = game.addChild(new StartMenu());
	LK.playMusic('startMenuMusic');
}
// Show start menu when game loads
showStartMenu();
function spawnMeteor() {
	var meteor = new Meteor();
	meteor.x = Math.random() * (2048 - 100) + 50;
	meteor.y = -50;
	meteor.lastY = meteor.y;
	meteors.push(meteor);
	game.addChild(meteor);
}
function spawnAlien() {
	var alien = new Alien();
	alien.x = Math.random() * (2048 - 100) + 50;
	alien.y = -50;
	alien.lastY = alien.y; //{alien_spawn}
	aliens.push(alien);
	game.addChild(alien);
} //{alien_spawn_end}
function shootBullet() {
	if (!gameStarted) return;
	var bullet = new Bullet();
	bullet.x = banana.x;
	bullet.y = banana.y - 60;
	bullet.lastY = bullet.y;
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('shoot').play();
}
game.down = function (x, y, obj) {
	shootBullet();
};
game.move = function (x, y, obj) {
	if (!gameStarted) return;
	banana.x = x;
	// Keep banana within screen bounds
	if (banana.x < 40) banana.x = 40;
	if (banana.x > 2048 - 40) banana.x = 2048 - 40;
};
game.update = function () {
	if (!gameStarted) return;
	meteorSpawnTimer++;
	if (meteorSpawnTimer >= meteorSpawnInterval) {
		spawnMeteor();
		meteorSpawnTimer = 0;
		if (meteorSpawnInterval > 30) {
			meteorSpawnInterval -= 0.5;
		}
	}
	alienSpawnTimer++;
	if (alienSpawnTimer >= alienSpawnInterval) {
		spawnAlien();
		alienSpawnTimer = 0;
		if (alienSpawnInterval > 60) {
			alienSpawnInterval -= 0.5;
		} //{alien_interval}
	} //{alien_interval_end}
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
		if (bullet.lastY >= -30 && bullet.y < -30) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		for (var j = meteors.length - 1; j >= 0; j--) {
			var meteor = meteors[j];
			if (bullet.intersects(meteor)) {
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText('Score: ' + LK.getScore());
				LK.getSound('meteorDestroy').play();
				LK.effects.flashObject(meteor, 0xFF4500, 300);
				bullet.destroy();
				bullets.splice(i, 1);
				meteor.destroy();
				meteors.splice(j, 1);
				break;
			}
		}
		for (var a = aliens.length - 1; a >= 0; a--) {
			var alien = aliens[a];
			if (bullet.intersects(alien)) {
				LK.setScore(LK.getScore() + 2);
				scoreTxt.setText('Score: ' + LK.getScore());
				LK.getSound('alienDestroy').play();
				LK.effects.flashObject(alien, 0xFF4500, 300);
				bullet.destroy(); //{alien_bullet}
				bullets.splice(i, 1); //{alien_bullet2}
				alien.destroy(); //{alien_bullet3}
				aliens.splice(a, 1);
				break;
			} //{alien_bullet4}
		} //{alien_bullet5}
		if (bullets[i]) {
			bullet.lastY = bullet.y;
		}
	}
	for (var k = meteors.length - 1; k >= 0; k--) {
		var meteor = meteors[k];
		if (meteor.lastY === undefined) meteor.lastY = meteor.y;
		if (meteor.lastY <= 2732 && meteor.y > 2732) {
			meteorsPassed++;
			meteor.destroy();
			meteors.splice(k, 1);
			if (meteorsPassed >= 20) {
				gameStarted = false;
				LK.playMusic('gameOverMusic', {
					loop: false
				});
				LK.setTimeout(function () {
					LK.showGameOver();
				}, 1000);
			}
			continue;
		}
		meteor.lastY = meteor.y;
	}
	for (var l = aliens.length - 1; l >= 0; l--) {
		var alien = aliens[l];
		if (alien.lastY === undefined) alien.lastY = alien.y;
		if (alien.lastY <= 2732 && alien.y > 2732) {
			meteorsPassed++;
			alien.destroy(); //{alien_passed}
			aliens.splice(l, 1);
			if (meteorsPassed >= 20) {
				gameStarted = false; //{alien_passed2}
				LK.playMusic('gameOverMusic', {
					loop: false
				}); //{alien_passed3}
				LK.setTimeout(function () {
					LK.showGameOver();
				}, 1000);
			} //{alien_passed4}
			continue; //{alien_passed5}
		} //{alien_passed6}
		alien.lastY = alien.y; //{alien_passed7}
	} //{alien_passed8}
};