/**** 
* 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.speed = 8;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = -2;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.velocityY = 0;
	self.onGround = false;
	self.jumpSpeed = -25;
	self.gravity = 1.2;
	self.speed = 3;
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// Move forward automatically
		self.x += self.speed;
		// Check ground collision
		if (self.y >= groundY) {
			self.y = groundY;
			self.velocityY = 0;
			self.onGround = true;
		} else {
			self.onGround = false;
		}
	};
	self.jump = function () {
		if (self.onGround) {
			self.velocityY = self.jumpSpeed;
			self.onGround = false;
		}
	};
	return self;
});
var Table = Container.expand(function () {
	var self = Container.call(this);
	var tableGraphics = self.attachAsset('table', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var player;
var bullets = [];
var enemies = [];
var obstacles = [];
var table;
var platform;
var lives = 10;
var currentLevel = 1;
var groundY = 2500;
var cameraX = 0;
var levelComplete = false;
// UI Elements
var livesText = new Text2('Lives: 10', {
	size: 80,
	fill: 0xFFFFFF
});
livesText.anchor.set(0, 0);
LK.gui.topLeft.addChild(livesText);
var levelText = new Text2('Level 1', {
	size: 80,
	fill: 0xFFFFFF
});
levelText.anchor.set(0.5, 0);
LK.gui.top.addChild(levelText);
// Initialize level
function initializeLevel() {
	// Clear existing elements
	bullets = [];
	enemies = [];
	obstacles = [];
	// Create platform
	platform = game.addChild(LK.getAsset('platform', {
		anchorX: 0,
		anchorY: 1.0,
		x: 0,
		y: groundY + 50
	}));
	// Create player
	player = game.addChild(new Player());
	player.x = 200;
	player.y = groundY;
	// Create enemies at various positions
	for (var i = 0; i < 5 + currentLevel; i++) {
		var enemy = game.addChild(new Enemy());
		enemy.x = 800 + i * 400 + Math.random() * 200;
		enemy.y = groundY;
		enemies.push(enemy);
	}
	// Create obstacles
	for (var i = 0; i < 3 + currentLevel; i++) {
		var obstacle = game.addChild(new Obstacle());
		obstacle.x = 600 + i * 500 + Math.random() * 300;
		obstacle.y = groundY;
		obstacles.push(obstacle);
	}
	// Create table at end of level
	table = game.addChild(new Table());
	table.x = 3000 + currentLevel * 1000;
	table.y = groundY;
	cameraX = 0;
	levelComplete = false;
	// Update level text
	levelText.setText('Level ' + currentLevel);
}
// Touch controls
game.down = function (x, y, obj) {
	// Jump on touch
	if (player && !levelComplete) {
		player.jump();
		// Shoot bullet
		var bullet = game.addChild(new Bullet());
		bullet.x = player.x + 40;
		bullet.y = player.y - 40;
		bullets.push(bullet);
		LK.getSound('shoot').play();
	}
};
// Camera follow player
function updateCamera() {
	if (player) {
		cameraX = player.x - 400;
		if (cameraX < 0) cameraX = 0;
		game.x = -cameraX;
	}
}
// Damage player
function damagePlayer() {
	lives--;
	livesText.setText('Lives: ' + lives);
	LK.getSound('damage').play();
	// Flash player red
	if (player) {
		LK.effects.flashObject(player, 0xff0000, 500);
	}
	if (lives <= 0) {
		LK.showGameOver();
	}
}
// Complete level
function completeLevel() {
	if (!levelComplete) {
		levelComplete = true;
		currentLevel++;
		// Flash screen green
		LK.effects.flashScreen(0x00ff00, 1000);
		// Restart level after delay
		LK.setTimeout(function () {
			// Clear all objects
			if (player) player.destroy();
			for (var i = 0; i < bullets.length; i++) {
				bullets[i].destroy();
			}
			for (var i = 0; i < enemies.length; i++) {
				enemies[i].destroy();
			}
			for (var i = 0; i < obstacles.length; i++) {
				obstacles[i].destroy();
			}
			if (table) table.destroy();
			if (platform) platform.destroy();
			initializeLevel();
		}, 1500);
	}
}
// Initialize first level
initializeLevel();
game.update = function () {
	if (levelComplete) return;
	// Update camera
	updateCamera();
	// Check bullet collisions with enemies
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		var bulletHit = false;
		// Check if bullet is off screen
		if (bullet.x > cameraX + 2200) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Enemy destroyed
				LK.effects.flashObject(enemy, 0xffff00, 300);
				LK.getSound('hit').play();
				enemy.destroy();
				enemies.splice(j, 1);
				bullet.destroy();
				bullets.splice(i, 1);
				bulletHit = true;
				break;
			}
		}
	}
	// Check player collisions with enemies
	if (player) {
		for (var i = enemies.length - 1; i >= 0; i--) {
			var enemy = enemies[i];
			if (player.intersects(enemy)) {
				damagePlayer();
				enemy.destroy();
				enemies.splice(i, 1);
			}
		}
		// Check player collisions with obstacles
		for (var i = 0; i < obstacles.length; i++) {
			var obstacle = obstacles[i];
			if (player.intersects(obstacle)) {
				damagePlayer();
				// Push player back
				player.x -= 20;
				break;
			}
		}
		// Check if player reached table
		if (table && player.intersects(table)) {
			completeLevel();
		}
		// Check if player fell off screen
		if (player.y > groundY + 500) {
			damagePlayer();
			player.x = 200;
			player.y = groundY;
			player.velocityY = 0;
		}
	}
	// Remove enemies that are too far behind
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (enemy.x < cameraX - 200) {
			enemy.destroy();
			enemies.splice(i, 1);
		}
	}
};