/**** 
* Classes
****/ 
// Dust class for dust particles
var Dust = Container.expand(function () {
	var self = Container.call(this);
	var dustGraphics = self.attachAsset('Dust', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	dustGraphics.alpha = 0.5;
	self.speed = Math.random() * 2 + 1;
	self.direction = Math.random() * Math.PI * 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// Enemy class representing the enemy robots
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// Assets will be automatically created and loaded by the LK engine based on their usage in the code.
// Hero class representing the player's spaceship
var Hero = Container.expand(function () {
	var self = Container.call(this);
	self.prevX = self.x; // Initialize prevX with the current x position
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		if (self.y > 2375) {
			self.y -= self.speed;
		}
		// Add rotation based on movement direction
		if (self.x > self.prevX) {
			self.rotation += Math.PI / 180 * 1; // Rotate 1 degree to the right
			if (self.rotation > Math.PI / 180 * 5) {
				self.rotation = Math.PI / 180 * 5;
			}
		} else if (self.x < self.prevX) {
			self.rotation -= Math.PI / 180 * 1; // Rotate 1 degree to the left
			if (self.rotation < Math.PI / 180 * -5) {
				self.rotation = Math.PI / 180 * -5;
			}
		} else {
			if (self.rotation > 0) {
				self.rotation -= Math.PI / 180 * 1;
				if (self.rotation < 0) {
					self.rotation = 0;
				}
			} else if (self.rotation < 0) {
				self.rotation += Math.PI / 180 * 1;
				if (self.rotation > 0) {
					self.rotation = 0;
				}
			}
		}
		self.prevX = self.x; // Store the current x position for the next frame
		// Add scale change to simulate footsteps
		if (LK.ticks % 24 < 12) {
			self.scale.x = 1.02;
		} else {
			self.scale.x = 0.98;
		}
	};
});
// Bullet class for hero's bullets
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('heroBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});
// Road class for the scrolling road
var Road = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('Road', {
		anchorX: 0.5,
		anchorY: 0
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y >= 2732) {
			self.y = -2732;
		}
	};
});
// Road2 class for the scrolling road
var Road2 = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('Road2', {
		anchorX: 0.5,
		anchorY: 0
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y >= 2732) {
			self.y = -2732;
		}
	};
});

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

/**** 
* Game Code
****/ 
// Initialize the road instances
var road1 = game.addChild(new Road());
var road2 = game.addChild(new Road2());
road2.x = 2048 / 2 * 0.94;
road1.x = 2048 / 2;
road1.y = 0;
road2.y = -2732;
// Initialize variables
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 + hero.height;
var enemies = [];
var heroBullets = [];
// Function to handle game updates
game.update = function () {
	// Update the road instances
	road1.update();
	road2.update();
	// Update hero position based on touch input
	if (dragNode) {
		hero.x = dragNode.x;
		hero.y = dragNode.y;
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].intersects(hero)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Update hero bullets
	for (var j = heroBullets.length - 1; j >= 0; j--) {
		heroBullets[j].update();
		for (var k = enemies.length - 1; k >= 0; k--) {
			if (heroBullets[j].intersects(enemies[k])) {
				enemies[k].destroy();
				heroBullets[j].destroy();
				enemies.splice(k, 1);
				heroBullets.splice(j, 1);
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore());
				break;
			}
		}
	}
	// Stop enemy generation
	// Fire bullets
	if (LK.ticks % 30 == 0) {
		var newBullet = new HeroBullet();
		newBullet.x = hero.x;
		newBullet.y = hero.y;
		heroBullets.push(newBullet);
		game.addChild(newBullet);
	}
	// Generate dust particles in sync with player pulsing
	if (LK.ticks % 24 == 0) {
		var newDust = new Dust();
		newDust.x = hero.x;
		newDust.y = hero.y + hero.height / 2;
		game.addChild(newDust);
	}
};
// Handle touch input for hero movement
var dragNode = null;
game.down = function (x, y, obj) {
	dragNode = {
		x: hero.x,
		y: hero.y
	};
	// Add a tilt-back effect during initial movement
	hero.rotation = x > hero.x ? Math.PI / 180 * -1 : Math.PI / 180 * 1;
};
game.move = function (x, y, obj) {
	if (dragNode) {
		// Add a slight delay to the drag control to make the player feel like it has more weight
		dragNode.x += (x - dragNode.x) * 0.1;
		dragNode.y = hero.y; // Lock the y position to the hero's initial y position
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Display score
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.setText(LK.getScore());