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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Monster = Container.expand(function () {
	var self = Container.call(this);
	var monsterGraphics = self.attachAsset('monster', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1.5;
	self.velocityX = 0;
	self.velocityY = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.shootCooldown = 0;
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
	};
	self.shoot = function (targetX, targetY) {
		if (self.shootCooldown <= 0 && ammo > 0 && reloadTime <= 0) {
			var bullet = new Bullet();
			bullet.x = self.x;
			bullet.y = self.y;
			var dx = targetX - self.x;
			var dy = targetY - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			bullet.velocityX = dx / distance * 12;
			bullet.velocityY = dy / distance * 12;
			bullets.push(bullet);
			game.addChild(bullet);
			LK.getSound('shoot').play();
			self.shootCooldown = 10;
			ammo--;
			ammoText.setText('Ammo: ' + ammo + '/' + maxAmmo);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2d5a2d
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 / 2;
var monsters = [];
var bullets = [];
var spawnTimer = 0;
var spawnRate = 120; // frames between spawns
var gameRunning = true;
var ammo = 10;
var maxAmmo = 10;
var reloadTime = 0;
var reloadDuration = 180; // 3 seconds at 60fps
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var healthText = new Text2('Health: 100', {
	size: 50,
	fill: 0xFF4444
});
healthText.anchor.set(0, 0);
healthText.x = 150;
healthText.y = 50;
LK.gui.topLeft.addChild(healthText);
var ammoText = new Text2('Ammo: 10/10', {
	size: 50,
	fill: 0x44FF44
});
ammoText.anchor.set(0, 0);
ammoText.x = 150;
ammoText.y = 120;
LK.gui.topLeft.addChild(ammoText);
function spawnMonster() {
	var monster = new Monster();
	// Spawn from random edge
	var edge = Math.floor(Math.random() * 4);
	switch (edge) {
		case 0:
			// Top
			monster.x = Math.random() * 2048;
			monster.y = -30;
			break;
		case 1:
			// Right
			monster.x = 2048 + 30;
			monster.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			monster.x = Math.random() * 2048;
			monster.y = 2732 + 30;
			break;
		case 3:
			// Left
			monster.x = -30;
			monster.y = Math.random() * 2732;
			break;
	}
	// Calculate direction toward player
	var dx = player.x - monster.x;
	var dy = player.y - monster.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	monster.velocityX = dx / distance * monster.speed;
	monster.velocityY = dy / distance * monster.speed;
	monsters.push(monster);
	game.addChild(monster);
}
game.down = function (x, y, obj) {
	if (gameRunning) {
		player.shoot(x, y);
	}
};
game.update = function () {
	if (!gameRunning) return;
	// Handle reloading
	if (ammo <= 0 && reloadTime <= 0) {
		reloadTime = reloadDuration;
	}
	if (reloadTime > 0) {
		reloadTime--;
		if (reloadTime <= 0) {
			ammo = maxAmmo;
			ammoText.setText('Ammo: ' + ammo + '/' + maxAmmo);
		} else {
			var reloadProgress = Math.ceil((reloadDuration - reloadTime) / reloadDuration * 100);
			ammoText.setText('Reloading... ' + reloadProgress + '%');
		}
	}
	// Spawn monsters
	spawnTimer++;
	if (spawnTimer >= spawnRate) {
		spawnMonster();
		spawnTimer = 0;
		// Increase difficulty over time
		if (spawnRate > 30) {
			spawnRate -= 0.5;
		}
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Remove bullets that go off screen
		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-monster collisions
		for (var j = monsters.length - 1; j >= 0; j--) {
			var monster = monsters[j];
			if (bullet.intersects(monster)) {
				// Hit monster
				LK.getSound('hit').play();
				LK.setScore(LK.getScore() + 10);
				scoreText.setText('Score: ' + LK.getScore());
				// Create explosion effect before destroying monster
				var explosionX = monster.x;
				var explosionY = monster.y;
				// Scale up and fade out the monster as explosion
				tween(monster, {
					scaleX: 2.5,
					scaleY: 2.5,
					alpha: 0
				}, {
					duration: 300,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						monster.destroy();
					}
				});
				// Remove bullet and monster from arrays
				bullet.destroy();
				bullets.splice(i, 1);
				monsters.splice(j, 1);
				break;
			}
		}
	}
	// Update monsters and check player collision
	for (var k = monsters.length - 1; k >= 0; k--) {
		var monster = monsters[k];
		if (monster.intersects(player)) {
			player.health -= 5;
			healthText.setText('Health: ' + player.health);
			// Flash player red
			LK.effects.flashObject(player, 0xff0000, 200);
			// Remove monster
			monster.destroy();
			monsters.splice(k, 1);
			// Check game over
			if (player.health <= 0) {
				gameRunning = false;
				LK.showGameOver();
			}
		}
	}
};
// Start background music
LK.playMusic('battle');