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

/**** 
* Classes
****/ 
var Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.targetX = 1024;
	self.speed = 3;
	self.hasShield = false;
	self.isInvincible = false;
	self.shieldTimer = 0;
	self.invincibleTimer = 0;
	self.update = function () {
		if (self.x < self.targetX - 2) {
			self.x += self.speed + 2;
		} else if (self.x > self.targetX + 2) {
			self.x -= self.speed + 2;
		}
		if (self.hasShield) {
			self.shieldTimer--;
			if (self.shieldTimer <= 0) {
				self.hasShield = false;
				carGraphics.tint = 0xffffff;
			}
		}
		if (self.isInvincible) {
			self.invincibleTimer--;
			carGraphics.alpha = 0.6 + Math.sin(LK.ticks * 0.1) * 0.4;
			if (self.invincibleTimer <= 0) {
				self.isInvincible = false;
				carGraphics.alpha = 1;
			}
		}
	};
	return self;
});
var EnemyCar = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Invincibility = Container.expand(function () {
	var self = Container.call(this);
	var invincibilityGraphics = self.attachAsset('invincibility', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.update = function () {
		self.y += self.speed;
		self.alpha = 0.7 + Math.sin(LK.ticks * 0.05) * 0.3;
	};
	return self;
});
var Shield = Container.expand(function () {
	var self = Container.call(this);
	var shieldGraphics = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.rotation = 0;
	self.update = function () {
		self.y += self.speed;
		self.rotation -= 0.05;
	};
	return self;
});
var SpeedBoost = Container.expand(function () {
	var self = Container.call(this);
	var boostGraphics = self.attachAsset('speedBoost', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.rotation = 0;
	self.update = function () {
		self.y += self.speed;
		self.rotation += 0.05;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a1a
});

/**** 
* Game Code
****/ 
var asphalt = LK.getAsset('asphalt', {
	anchorX: 0.5,
	anchorY: 0.5
});
game.addChildAt(asphalt, 0);
asphalt.x = 1024;
asphalt.y = 1366;
var car = game.addChild(new Car());
car.x = 1024;
car.y = 2400;
var obstacles = [];
var powerups = [];
var score = 0;
var distanceTraveled = 0;
var gameSpeed = 8;
var baseSpeed = 8;
var maxSpeed = 15;
var speedIncreaseRate = 0.002;
var spawnRate = 60;
var obstacleSpawnCounter = 0;
var powerupSpawnCounter = 0;
var hasShield = false;
var isInvincible = false;
var dragNode = null;
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: '#ffffff'
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var distanceTxt = new Text2('Distance: 0', {
	size: 80,
	fill: '#ffffff'
});
distanceTxt.anchor.set(0.5, 0);
distanceTxt.y = 100;
LK.gui.top.addChild(distanceTxt);
var speedTxt = new Text2('Speed: 1.0x', {
	size: 80,
	fill: '#ffffff'
});
speedTxt.anchor.set(0.5, 0);
speedTxt.y = 180;
LK.gui.top.addChild(speedTxt);
function spawnObstacle() {
	var newEnemyCar = new EnemyCar();
	var randomLane = Math.floor(Math.random() * 3);
	newEnemyCar.x = 400 + randomLane * 400;
	newEnemyCar.y = -100;
	newEnemyCar.speed = gameSpeed;
	obstacles.push(newEnemyCar);
	game.addChild(newEnemyCar);
}
function spawnPowerup() {
	var powerupType = Math.floor(Math.random() * 3);
	var newPowerup;
	var randomLane = Math.floor(Math.random() * 3);
	var randomX = 400 + randomLane * 400;
	if (powerupType === 0) {
		newPowerup = new SpeedBoost();
	} else if (powerupType === 1) {
		newPowerup = new Shield();
	} else {
		newPowerup = new Invincibility();
	}
	newPowerup.x = randomX;
	newPowerup.y = -100;
	newPowerup.speed = gameSpeed;
	newPowerup.powerupType = powerupType;
	powerups.push(newPowerup);
	game.addChild(newPowerup);
}
function handleMove(x, y, obj) {
	if (dragNode) {
		dragNode.targetX = Math.max(300, Math.min(1748, x));
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = car;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.update = function () {
	distanceTraveled += gameSpeed;
	gameSpeed = Math.min(maxSpeed, baseSpeed + distanceTraveled * speedIncreaseRate);
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		if (obstacle.lastY === undefined) obstacle.lastY = obstacle.y;
		obstacle.speed = gameSpeed;
		if (obstacle.lastY >= -50 && obstacle.y < -50) {
			obstacle.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		if (obstacle.lastY <= 2800 && obstacle.y > 2800) {
			obstacle.destroy();
			obstacles.splice(i, 1);
			score += 10;
			continue;
		}
		var isColliding = obstacle.intersects(car);
		if (isColliding && !car.isInvincible) {
			if (car.hasShield) {
				car.hasShield = false;
				car.shieldTimer = 0;
				carGraphics = car.children[0];
				carGraphics.tint = 0xffffff;
				obstacle.destroy();
				obstacles.splice(i, 1);
				LK.getSound('powerup').play();
				continue;
			} else {
				LK.effects.flashScreen(0xff0000, 500);
				LK.getSound('collision').play();
				LK.showGameOver();
			}
		}
		obstacle.lastY = obstacle.y;
	}
	for (var j = powerups.length - 1; j >= 0; j--) {
		var powerup = powerups[j];
		if (powerup.lastY === undefined) powerup.lastY = powerup.y;
		powerup.speed = gameSpeed;
		if (powerup.lastY >= -50 && powerup.y < -50) {
			powerup.destroy();
			powerups.splice(j, 1);
			continue;
		}
		if (powerup.lastY <= 2800 && powerup.y > 2800) {
			powerup.destroy();
			powerups.splice(j, 1);
			continue;
		}
		var isPowerupColliding = powerup.intersects(car);
		if (isPowerupColliding) {
			LK.getSound('powerup').play();
			if (powerup.powerupType === 0) {
				LK.getSound('boost').play();
				gameSpeed = Math.min(maxSpeed, gameSpeed + 3);
				score += 50;
			} else if (powerup.powerupType === 1) {
				car.hasShield = true;
				car.shieldTimer = 300;
				var carGraphics = car.children[0];
				carGraphics.tint = 0x00ff00;
				score += 30;
			} else if (powerup.powerupType === 2) {
				car.isInvincible = true;
				car.invincibleTimer = 240;
				score += 40;
			}
			powerup.destroy();
			powerups.splice(j, 1);
		}
		powerup.lastY = powerup.y;
	}
	obstacleSpawnCounter++;
	if (obstacleSpawnCounter >= Math.max(30, spawnRate - Math.floor(distanceTraveled / 10000))) {
		spawnObstacle();
		obstacleSpawnCounter = 0;
	}
	powerupSpawnCounter++;
	if (powerupSpawnCounter >= 200) {
		spawnPowerup();
		powerupSpawnCounter = 0;
	}
	scoreTxt.setText('Score: ' + score);
	distanceTxt.setText('Distance: ' + Math.floor(distanceTraveled / 10));
	var speedMultiplier = (gameSpeed / baseSpeed).toFixed(1);
	speedTxt.setText('Speed: ' + speedMultiplier + 'x');
};
LK.playMusic('racingMusic', {
	loop: true
});