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

/**** 
* Classes
****/ 
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = self.y;
	self.lastIntersectingPlayer = false;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.shootTimer = 0;
	self.shootInterval = 60;
	self.waveNumber = 1;
	self.lastY = self.y;
	self.lastIntersectingPlayer = false;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
		self.shootTimer++;
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.lastY = self.y;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});
var PlayerShip = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.x = 1024;
	self.y = 2500;
	self.moveLeft = function () {
		if (self.x > 50) {
			self.x -= self.speed;
		}
	};
	self.moveRight = function () {
		if (self.x < 1998) {
			self.x += self.speed;
		}
	};
	self.moveUp = function () {
		if (self.y > 100) {
			self.y -= self.speed;
		}
	};
	self.moveDown = function () {
		if (self.y < 2650) {
			self.y += self.speed;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000814
});

/**** 
* Game Code
****/ 
var player = game.addChild(new PlayerShip());
var playerBullets = [];
var enemies = [];
var enemyBullets = [];
var waveCount = 1;
var waveTimer = 0;
var shootCooldown = 0;
var gameActive = true;
var touchStartX = 0;
var touchStartY = 0;
var currentTouchX = 1024;
var currentTouchY = 2500;
var scoreText = new Text2('Score: 0', {
	size: 100,
	fill: '#ffffff'
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var waveText = new Text2('Wave: 1', {
	size: 80,
	fill: '#ffff00'
});
waveText.anchor.set(0.5, 0);
waveText.x = 500;
LK.gui.top.addChild(waveText);
function spawnEnemyWave() {
	var enemyCount = 3 + Math.floor(waveCount / 2);
	var spacing = 1800 / enemyCount;
	for (var i = 0; i < enemyCount; i++) {
		var newEnemy = new EnemyShip();
		newEnemy.x = 150 + i * spacing + Math.random() * 100;
		newEnemy.y = -100;
		newEnemy.speed = 1 + waveCount * 0.5;
		newEnemy.shootInterval = Math.max(40, 80 - waveCount * 5);
		newEnemy.waveNumber = waveCount;
		enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
}
function handleTouchMove(x, y, obj) {
	currentTouchX = x;
	currentTouchY = y;
}
game.move = handleTouchMove;
game.down = function (x, y, obj) {
	touchStartX = x;
	touchStartY = y;
};
game.up = function (x, y, obj) {
	touchStartX = 0;
	touchStartY = 0;
};
spawnEnemyWave();
LK.playMusic('bgmusic');
game.update = function () {
	if (!gameActive) return;
	shootCooldown--;
	waveTimer++;
	var distX = currentTouchX - player.x;
	var distY = currentTouchY - player.y;
	var distance = Math.sqrt(distX * distX + distY * distY);
	if (distance > 20) {
		var moveSpeed = 8;
		player.x += distX / distance * moveSpeed;
		player.y += distY / distance * moveSpeed;
	}
	player.x = Math.max(50, Math.min(1998, player.x));
	player.y = Math.max(100, Math.min(2650, player.y));
	if (shootCooldown <= 0) {
		var newBullet = new PlayerBullet();
		newBullet.x = player.x;
		newBullet.y = player.y - 50;
		newBullet.lastY = newBullet.y;
		playerBullets.push(newBullet);
		game.addChild(newBullet);
		LK.getSound('shoot').play();
		shootCooldown = 15;
	}
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		bullet.update();
		if (bullet.y < -50) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				LK.setScore(LK.getScore() + 10);
				scoreText.setText('Score: ' + LK.getScore());
				LK.effects.flashObject(enemy, 0xffff00, 200);
				LK.getSound('explosion').play();
				bullet.destroy();
				playerBullets.splice(i, 1);
				enemy.destroy();
				enemies.splice(j, 1);
				break;
			}
		}
	}
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		enemy.update();
		var currentIntersectingPlayer = enemy.intersects(player);
		if (!enemy.lastIntersectingPlayer && currentIntersectingPlayer) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			gameActive = false;
			return;
		}
		enemy.lastIntersectingPlayer = currentIntersectingPlayer;
		if (enemy.y > 2732) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		if (enemy.shootTimer >= enemy.shootInterval) {
			var newEnemyBullet = new EnemyBullet();
			newEnemyBullet.x = enemy.x;
			newEnemyBullet.y = enemy.y + 30;
			newEnemyBullet.lastY = newEnemyBullet.y;
			newEnemyBullet.lastIntersectingPlayer = false;
			enemyBullets.push(newEnemyBullet);
			game.addChild(newEnemyBullet);
			enemy.shootTimer = 0;
		}
	}
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		bullet.update();
		if (bullet.y > 2732) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		var currentIntersectingPlayer = bullet.intersects(player);
		if (!bullet.lastIntersectingPlayer && currentIntersectingPlayer) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			gameActive = false;
			return;
		}
		bullet.lastIntersectingPlayer = currentIntersectingPlayer;
	}
	if (enemies.length === 0 && waveTimer > 120) {
		waveCount++;
		waveTimer = 0;
		waveText.setText('Wave: ' + waveCount);
		spawnEnemyWave();
	}
};