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

/**** 
* Classes
****/ 
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
	};
	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.update = function () {
		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
	});
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.type = 'speed'; // speed, fireRate, or coins
	self.update = function () {
		self.y += self.speed;
		self.rotation += 0.1;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011
});

/**** 
* Game Code
****/ 
var player = game.addChild(new PlayerShip());
player.x = 1024;
player.y = 2000;
tween(player, {
	scaleX: 1.2,
	scaleY: 1.2
}, {
	duration: 800,
	easing: tween.easeInOut,
	onFinish: function onFinish() {
		tween(player, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 800,
			easing: tween.easeInOut
		});
	}
});
var playerBullets = [];
var enemies = [];
var bulletTimer = 0;
var enemySpawnTimer = 0;
var enemySpawnRate = 120;
var dragNode = null;
var upgradeLevel = storage.upgradeLevel || 1;
var coins = storage.coins || 0;
var powerUpTimer = 0;
var powerUps = [];
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 50;
var highScore = storage.highScore || 0;
var highScoreTxt = new Text2('High: ' + highScore, {
	size: 80,
	fill: 0xFFFF00
});
highScoreTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(highScoreTxt);
highScoreTxt.x = -20;
highScoreTxt.y = 50;
function handleMove(x, y, obj) {
	if (dragNode) {
		// Allow free movement within screen bounds
		var targetX = x;
		var targetY = y;
		if (targetX < 60) targetX = 60;
		if (targetX > 1988) targetX = 1988;
		if (targetY < 100) targetY = 100;
		if (targetY > 2600) targetY = 2600;
		// Direct movement without tweening for immediate response
		dragNode.x = targetX;
		dragNode.y = targetY;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = player;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.update = function () {
	bulletTimer++;
	enemySpawnTimer++;
	powerUpTimer++;
	// Spawn player bullets with upgrade-based fire rate
	var fireRate = Math.max(8, 15 - upgradeLevel * 2);
	if (bulletTimer >= fireRate) {
		var newBullet = new PlayerBullet();
		newBullet.x = player.x;
		newBullet.y = player.y - 40;
		newBullet.lastY = newBullet.y;
		playerBullets.push(newBullet);
		game.addChild(newBullet);
		LK.getSound('shoot').play();
		bulletTimer = 0;
	}
	// Spawn power-ups occasionally
	if (powerUpTimer >= 600) {
		var newPowerUp = new PowerUp();
		newPowerUp.x = Math.random() * 1800 + 124;
		newPowerUp.y = -30;
		newPowerUp.lastY = newPowerUp.y;
		var powerUpTypes = ['speed', 'fireRate', 'coins'];
		newPowerUp.type = powerUpTypes[Math.floor(Math.random() * powerUpTypes.length)];
		if (newPowerUp.type === 'coins') {
			tween(newPowerUp, {
				tint: 0xffd700
			}, {
				duration: 0
			});
		} else if (newPowerUp.type === 'fireRate') {
			tween(newPowerUp, {
				tint: 0xff6600
			}, {
				duration: 0
			});
		}
		powerUps.push(newPowerUp);
		game.addChild(newPowerUp);
		powerUpTimer = 0;
	}
	// Spawn enemies
	if (enemySpawnTimer >= enemySpawnRate) {
		var newEnemy = new EnemyShip();
		newEnemy.x = Math.random() * 1800 + 124;
		newEnemy.y = -30;
		newEnemy.lastY = newEnemy.y;
		newEnemy.lastIntersectingPlayer = false;
		newEnemy.scaleX = 0.5;
		newEnemy.scaleY = 0.5;
		newEnemy.alpha = 0.7;
		tween(newEnemy, {
			scaleX: 1,
			scaleY: 1,
			alpha: 1
		}, {
			duration: 400,
			easing: tween.easeOut
		});
		enemies.push(newEnemy);
		game.addChild(newEnemy);
		enemySpawnTimer = 0;
		if (enemySpawnRate > 30) {
			enemySpawnRate -= 1;
		}
	}
	// Update and check power-ups
	for (var p = powerUps.length - 1; p >= 0; p--) {
		var powerUp = powerUps[p];
		if (powerUp.lastY === undefined) powerUp.lastY = powerUp.y;
		// Remove power-ups that go off screen
		if (powerUp.lastY <= 2800 && powerUp.y > 2800) {
			powerUp.destroy();
			powerUps.splice(p, 1);
			continue;
		}
		// Check power-up collection
		if (powerUp.intersects(player)) {
			LK.getSound('powerup').play();
			if (powerUp.type === 'coins') {
				coins += 5;
				storage.coins = coins;
			} else if (powerUp.type === 'fireRate' && upgradeLevel < 5) {
				upgradeLevel++;
				storage.upgradeLevel = upgradeLevel;
			} else if (powerUp.type === 'speed') {
				tween(player, {
					tint: 0x00ffff
				}, {
					duration: 200,
					onFinish: function onFinish() {
						tween(player, {
							tint: 0xffffff
						}, {
							duration: 200
						});
					}
				});
			}
			tween(powerUp, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					powerUp.destroy();
				}
			});
			powerUps.splice(p, 1);
			continue;
		}
		powerUp.lastY = powerUp.y;
	}
	// Update and check player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
		// Remove bullets that go off screen
		if (bullet.lastY >= -10 && bullet.y < -10) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check bullet-enemy collisions
		var hitEnemy = false;
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				var points = 10 + upgradeLevel * 5;
				LK.setScore(LK.getScore() + points);
				scoreTxt.setText(LK.getScore());
				// Update high score
				if (LK.getScore() > highScore) {
					highScore = LK.getScore();
					storage.highScore = highScore;
					highScoreTxt.setText('High: ' + highScore);
					tween(highScoreTxt, {
						tint: 0x00ff00
					}, {
						duration: 300,
						onFinish: function onFinish() {
							tween(highScoreTxt, {
								tint: 0xffff00
							}, {
								duration: 300
							});
						}
					});
				}
				LK.getSound('explosion').play();
				LK.effects.flashObject(enemy, 0xffffff, 200);
				tween(enemy, {
					scaleX: 2,
					scaleY: 2,
					alpha: 0
				}, {
					duration: 300,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						enemy.destroy();
					}
				});
				bullet.destroy();
				playerBullets.splice(i, 1);
				enemies.splice(j, 1);
				hitEnemy = true;
				break;
			}
		}
		if (hitEnemy) continue;
		bullet.lastY = bullet.y;
	}
	// Update and check enemies
	for (var k = enemies.length - 1; k >= 0; k--) {
		var enemy = enemies[k];
		if (enemy.lastY === undefined) enemy.lastY = enemy.y;
		if (enemy.lastIntersectingPlayer === undefined) enemy.lastIntersectingPlayer = false;
		// Remove enemies that go off screen
		if (enemy.lastY <= 2800 && enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(k, 1);
			continue;
		}
		// Check enemy-player collision
		var currentIntersecting = enemy.intersects(player);
		if (!enemy.lastIntersectingPlayer && currentIntersecting) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		enemy.lastY = enemy.y;
		enemy.lastIntersectingPlayer = currentIntersecting;
	}
};