/**** 
* Classes
****/ 
// Enemy class representing the enemy robots
var Drone = Container.expand(function () {
	var self = Container.call(this);
	var droneGraphics = self.attachAsset('Drone', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// 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 = 0.75;
	self.speed = Math.random() * 3 + 1;
	self.rotationSpeed = Math.random() * 0.02 - 0.01; // Random rotation speed between -0.01 and 0.01
	self.direction = Math.random() * Math.PI * 0.5;
	self.update = function () {
		self.y += self.speed;
		self.x += Math.sin(self.direction) * self.speed; // Add slight X travel based on direction
		self.rotation += self.rotationSpeed; // Add rotation
		dustGraphics.alpha -= 0.01; // fade out at a medium pace
		if (self.y > 2732 || dustGraphics.alpha <= 0) {
			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();
		}
	};
});
// RailingLeft class for the scrolling left railing
var RailingLeft = Container.expand(function (assetType) {
	var self = Container.call(this);
	var railingGraphics = self.attachAsset(assetType, {
		anchorX: 0.5,
		anchorY: 0
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y >= 2732) {
			self.y = -2732;
		}
	};
});
// RailingRight class for the scrolling right railing
var RailingRight = Container.expand(function (assetType) {
	var self = Container.call(this);
	var railingGraphics = self.attachAsset(assetType, {
		anchorX: 0.5,
		anchorY: 0
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y >= 2732) {
			self.y = -2732;
		}
	};
});
// RoadScroll class for the scrolling road
var RoadScroll = Container.expand(function (assetType) {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset(assetType, {
		anchorX: 0.5,
		anchorY: 0
	});
	if (assetType === 'CityBackgroundHD') {
		self.speed = 1;
	} else {
		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 city background for parallax effect
var cityBackground1 = game.addChild(new RoadScroll('CityBackgroundHD'));
var cityBackground2 = game.addChild(new RoadScroll('CityBackgroundHD'));
cityBackground1.x = 2048 / 2;
cityBackground2.x = 2048 / 2;
cityBackground1.y = 0;
cityBackground2.y = -2732;
// Add game logo
var gameLogo = LK.getAsset('GameLogo', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 546.4 // 20% down from the top of the screen
});
game.addChild(gameLogo);
// Add play button
var playButton = LK.getAsset('PlayButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 600
});
game.addChild(playButton);
// Play button interaction
playButton.down = function (x, y, obj) {
	// Remove title screen elements
	game.removeChild(gameLogo);
	game.removeChild(playButton);
	// Set game state
	isStarted = true;
	isTitle = false;
	// Initialize player and enemies
	hero = game.addChild(new Hero());
	hero.x = 2048 / 2;
	hero.y = 2732 + hero.height;
	hero.update = function () {
		if (hero.y > 2375) {
			hero.y -= hero.speed;
		}
	};
};
// Initialize the road instances
var road1 = game.addChild(new RoadScroll('Road'));
var road2 = game.addChild(new RoadScroll('Road2'));
road2.x = 2048 / 2;
road1.x = 2048 / 2;
road1.y = 0;
road2.y = -2732;
// Initialize the left railing instances
var railingLeft1 = game.addChild(new RailingLeft('RailingStart'));
var railingLeft2 = game.addChild(new RailingLeft('RailingEnd'));
railingLeft1.x = 2048 * 0.16;
railingLeft2.x = 2048 * 0.16;
railingLeft1.y = 0;
railingLeft2.y = -2732;
// Initialize the right railing instances
var railingRight1 = game.addChild(new RailingRight('RailingEnd'));
var railingRight2 = game.addChild(new RailingRight('RailingStart'));
railingRight1.x = 2048 * 0.81; // Moved left by 3%
railingRight2.x = 2048 * 0.81; // Moved left by 3%
railingRight1.y = 0;
railingRight2.y = -2732;
// Initialize game state variables
var isStarted = false;
var isTitle = true; // Set initial game state to isTitle
// Initialize title screen elements
var gameLogo = LK.getAsset('GameLogo', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 300
});
game.addChild(gameLogo);
var playButton = LK.getAsset('PlayButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 600
});
game.addChild(playButton);
// Play button interaction
playButton.down = function (x, y, obj) {
	// Remove title screen elements
	game.removeChild(gameLogo);
	game.removeChild(playButton);
	// Set game state
	isStarted = true;
	isTitle = false;
	// Initialize player and enemies
	hero = game.addChild(new Hero());
	hero.x = 2048 / 2;
	hero.y = 2732 + hero.height;
	hero.update = function () {
		if (hero.y > 2375) {
			hero.y -= hero.speed;
		}
	};
};
var hero;
var enemies = [];
var heroBullets = [];
// Function to handle game updates
game.update = function () {
	if (isStarted) {
		// Update the city background instances for parallax effect
		cityBackground1.update();
		cityBackground2.update();
		// Update the road instances
		road1.update();
		road2.update();
		// Update the left railing instances
		railingLeft1.update();
		railingLeft2.update();
		// Update the right railing instances
		railingRight1.update();
		railingRight2.update();
		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;
				}
			}
		}
		// Spawn Drones from the top of the screen
		if (LK.ticks % 120 == 0) {
			var newDrone = new Drone();
			newDrone.x = Math.random() * 2048; // Random x position across the width of the screen
			newDrone.y = -newDrone.height; // Start just outside the top of the screen
			enemies.push(newDrone);
			game.addChild(newDrone);
		}
		// Fire bullets
		if (LK.ticks % 30 == 0) {
			var newBullet = new HeroBullet();
			newBullet.x = hero.x;
			newBullet.y = hero.y - hero.height / 2;
			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 - hero.width / 4; // Move dust spawn position right half as much as the last move
			newDust.y = hero.y + hero.height / 2 * 0.93; // Move dust spawn point up 3% more
			game.addChild(newDust);
		} else if (LK.ticks % 24 == 12) {
			var newDust = new Dust();
			newDust.x = hero.x + hero.width / 4; // Create another dust spawn point an equal distance in from the right of the player asset
			newDust.y = hero.y + hero.height / 2 * 0.93; // Move dust spawn point up 3% more
			game.addChild(newDust);
		}
	}
};
// Handle touch input for hero movement
var dragNode = null;
game.down = function (x, y, obj) {
	if (!isTitle) {
		dragNode = {
			x: hero.x,
			y: hero.y
		};
	}
	// Add a tilt-back effect during initial movement
	if (hero) {
		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());
// Update the left railing instances
railingLeft1.update();
railingLeft2.update();