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

/**** 
* Classes
****/ 
var Banknote = Container.expand(function () {
	var self = Container.call(this);
	var banknoteAsset = self.attachAsset('banknote', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	banknoteAsset.width = banknoteWidth;
	banknoteAsset.height = banknoteHeight;
	self.width = banknoteAsset.width;
	self.height = banknoteAsset.height;
	self.speedY = 0;
	self.update = function () {
		self.y += self.speedY;
	};
	return self;
});
// Coin for road
var Coin = Container.expand(function () {
	var self = Container.call(this);
	// Use a simple yellow ellipse as the coin
	var coinAsset = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	coinAsset.width = coinWidth;
	coinAsset.height = coinHeight;
	self.width = coinAsset.width;
	self.height = coinAsset.height;
	self.speedY = 0;
	self.update = function () {
		self.y += self.speedY;
	};
	return self;
});
// Banknote (paper money) for road
// Road Lane Marking
var LaneMarking = Container.expand(function () {
	var self = Container.call(this);
	var marking = self.attachAsset('laneMarking', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	marking.width = laneMarkingWidth;
	marking.height = laneMarkingHeight;
	self.width = marking.width;
	self.height = marking.height;
	self.speedY = 0;
	self.update = function () {
		self.y += self.speedY;
	};
	return self;
});
// Obstacle Car
var ObstacleCar = Container.expand(function () {
	var self = Container.call(this);
	var carAsset = self.attachAsset('obstacleCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	carAsset.width = obstacleCarWidth;
	carAsset.height = obstacleCarHeight;
	self.width = carAsset.width;
	self.height = carAsset.height;
	self.speedY = 0; // Vertical speed
	self.update = function () {
		self.y += self.speedY;
	};
	return self;
});
// Player's Car
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var carAsset = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	carAsset.width = playerCarWidth;
	carAsset.height = playerCarHeight;
	self.width = carAsset.width;
	self.height = carAsset.height;
	self.speedX = 0; // Horizontal speed
	// Update method called every tick
	self.update = function () {
		// --- DRIFT/SKID EFFECT ---
		// Initialize drift/skid state variables if not present
		if (self.slideAngle === undefined) self.slideAngle = 0;
		if (self.targetAngle === undefined) self.targetAngle = 0;
		if (self.driftOffset === undefined) self.driftOffset = 0;
		if (self.driftTargetOffset === undefined) self.driftTargetOffset = 0;
		// Calculate target angle and lateral offset based on speedX (simulate drift)
		// The more the player turns, the more the car visually rotates and slides sideways
		var maxDriftAngle = Math.PI / 7; // maximum visual drift angle (radians)
		var maxDriftOffset = 60; // maximum sideways offset (pixels)
		var driftSpeed = 0.18; // how quickly the car rotates to the drift angle
		var offsetSpeed = 0.12; // how quickly the car slides to the drift offset
		// Set drift targets based on speedX
		if (self.speedX < -1) {
			self.targetAngle = -maxDriftAngle;
			self.driftTargetOffset = -maxDriftOffset;
		} else if (self.speedX > 1) {
			self.targetAngle = maxDriftAngle;
			self.driftTargetOffset = maxDriftOffset;
		} else {
			self.targetAngle = 0;
			self.driftTargetOffset = 0;
		}
		// Smoothly interpolate slideAngle and driftOffset towards their targets
		self.slideAngle += (self.targetAngle - self.slideAngle) * driftSpeed;
		self.driftOffset += (self.driftTargetOffset - self.driftOffset) * offsetSpeed;
		// Apply rotation and lateral offset to car asset (visual only, not affecting movement)
		if (self.children && self.children.length > 0) {
			self.children[0].rotation = self.slideAngle;
			self.children[0].x = self.driftOffset;
		}
		// Move car horizontally
		self.x += self.speedX;
		// Clamp to road bounds
		if (self.x < roadLeft + self.width / 2) self.x = roadLeft + self.width / 2;
		if (self.x > roadRight - self.width / 2) self.x = roadRight - self.width / 2;
	};
	return self;
});
// Tree for road edge
var Tree = Container.expand(function () {
	var self = Container.call(this);
	var treeAsset = self.attachAsset('tree', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = treeAsset.width;
	self.height = treeAsset.height;
	self.speedY = 0;
	self.update = function () {
		self.y += self.speedY;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222222
});

/**** 
* Game Code
****/ 
// Road dimensions
// Banknote (paper money) for road
var banknoteWidth = 120;
var banknoteHeight = 60;
var roadWidth = 900;
var roadLeft = (2048 - roadWidth) / 2;
var roadRight = roadLeft + roadWidth;
// Lane count and positions
var laneCount = 3;
var laneWidth = roadWidth / laneCount;
var laneCenters = [roadLeft + laneWidth / 2, roadLeft + laneWidth * 1.5, roadLeft + laneWidth * 2.5];
// Player and obstacle car size (equalized, made slightly larger)
var playerCarWidth = 200;
var playerCarHeight = 320;
var obstacleCarWidth = 200;
var obstacleCarHeight = 320;
// Lane marking size
var laneMarkingWidth = 54;
var laneMarkingHeight = 330;
// Tree size and spacing
var treeWidth = 180;
var treeHeight = 270;
var treeSpacing = 220;
// Asset initialization (shapes)
// Game variables
var playerCar;
var obstacles = [];
var laneMarkings = [];
var trees = [];
var coins = [];
var banknotes = [];
var coinSpawnTimer = 0;
var coinSpawnInterval = 45; // frames, coins spawn more frequently
var banknoteSpawnTimer = 0;
var banknoteSpawnInterval = 120; // frames, less frequent than coins
var coinWidth = 80;
var coinHeight = 80;
var obstacleSpawnTimer = 0;
var obstacleSpawnInterval = 60; // frames
var laneMarkingSpacing = 320;
var speed = 18; // vertical speed (pixels per frame)
var score = 0;
var distance = 0;
var isGameOver = false;
// Add coin score indicator to the GUI
var coinScoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFE066
});
coinScoreTxt.anchor.set(0.5, 0); // Centered at top
// Place at top center, but not in the top left 100x100 px
LK.gui.top.addChild(coinScoreTxt);
// Initialize player car
playerCar = new PlayerCar();
playerCar.x = laneCenters[1];
playerCar.y = 2732 - 400;
game.addChild(playerCar);
// Initialize lane markings as dashed (split into short segments)
var dashLength = 80;
var dashGap = 80;
var dashesPerMarking = Math.floor(laneMarkingHeight / (dashLength + dashGap));
for (var i = 0; i < laneCount - 1; i++) {
	for (var j = 0; j < Math.ceil(2732 / laneMarkingSpacing) + 2; j++) {
		var baseY = j * laneMarkingSpacing - laneMarkingHeight / 2;
		for (var d = 0; d < dashesPerMarking; d++) {
			var marking = new LaneMarking();
			marking.x = roadLeft + laneWidth * (i + 1);
			marking.y = baseY + d * (dashLength + dashGap);
			marking.speedY = speed;
			marking.height = dashLength;
			marking.width = laneMarkingWidth;
			laneMarkings.push(marking);
			game.addChild(marking);
		}
	}
}
// Initialize trees along both sides of the road (slightly more trees)
for (var side = 0; side < 2; side++) {
	var xPos = side === 0 ? roadLeft - treeWidth / 2 - 30 : roadRight + treeWidth / 2 + 30;
	for (var j = 0; j < 6; j++) {
		// 6 trees per side! 
		var tree = new Tree();
		tree.x = xPos;
		tree.y = j * (2732 / 6) + 100;
		tree.speedY = speed;
		trees.push(tree);
		game.addChild(tree);
	}
}
// Touch controls
var moveLeft = false;
var moveRight = false;
// Helper: get which side of the screen is pressed
function getSide(x) {
	if (x < 2048 / 2) return 'left';
	return 'right';
}
// Touch down
game.down = function (x, y, obj) {
	if (isGameOver) return;
	var side = getSide(x);
	if (side === 'left') {
		moveLeft = true;
		moveRight = false;
	} else {
		moveRight = true;
		moveLeft = false;
	}
	updatePlayerSpeed();
};
// Touch up
game.up = function (x, y, obj) {
	moveLeft = false;
	moveRight = false;
	updatePlayerSpeed();
};
// Touch move (optional, for smoother control)
game.move = function (x, y, obj) {
	if (isGameOver) return;
	var side = getSide(x);
	if (side === 'left') {
		moveLeft = true;
		moveRight = false;
	} else {
		moveRight = true;
		moveLeft = false;
	}
	updatePlayerSpeed();
};
// Update player car speedX based on input
function updatePlayerSpeed() {
	if (moveLeft && !moveRight) {
		playerCar.speedX = -22;
	} else if (moveRight && !moveLeft) {
		playerCar.speedX = 22;
	} else {
		playerCar.speedX = 0;
	}
}
// Main game update loop
game.update = function () {
	if (isGameOver) return;
	// Update lane markings
	for (var i = 0; i < laneMarkings.length; i++) {
		var marking = laneMarkings[i];
		marking.speedY = speed;
		marking.update();
		if (marking.y > 2732 + laneMarkingHeight / 2) {
			marking.y -= (Math.ceil(2732 / laneMarkingSpacing) + 2) * laneMarkingSpacing;
		}
	}
	// Update trees
	for (var i = 0; i < trees.length; i++) {
		var tree = trees[i];
		tree.speedY = speed;
		tree.update();
		if (tree.y > 2732 + treeHeight / 2) {
			tree.y -= (Math.ceil(2732 / treeSpacing) + 3) * treeSpacing;
		}
	}
	// Update player car
	playerCar.update();
	// Spawn coins
	coinSpawnTimer++;
	if (coinSpawnTimer >= coinSpawnInterval) {
		coinSpawnTimer = 0;
		// Spawn coin in a random lane
		var coin = new Coin();
		var laneIdx = Math.floor(Math.random() * laneCount);
		coin.x = laneCenters[laneIdx];
		coin.y = -coinHeight / 2;
		coin.speedY = speed;
		coins.push(coin);
		game.addChild(coin);
	}
	// Spawn banknotes
	banknoteSpawnTimer++;
	if (banknoteSpawnTimer >= banknoteSpawnInterval) {
		banknoteSpawnTimer = 0;
		var banknote = new Banknote();
		var laneIdx = Math.floor(Math.random() * laneCount);
		banknote.x = laneCenters[laneIdx];
		banknote.y = -banknoteHeight / 2;
		banknote.speedY = speed;
		banknotes.push(banknote);
		game.addChild(banknote);
	}
	// Update coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		coin.speedY = speed;
		coin.update();
		// Remove if off screen
		if (coin.y > 2732 + coinHeight) {
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
		// Collect coin
		if (playerCar.intersects(coin)) {
			coin.destroy();
			coins.splice(i, 1);
			score += 1; // Add 1 point for each coin
			coinScoreTxt.setText(score); // Update coin score indicator
			continue;
		}
	}
	// Update banknotes
	for (var i = banknotes.length - 1; i >= 0; i--) {
		var banknote = banknotes[i];
		banknote.speedY = speed;
		banknote.update();
		if (banknote.y > 2732 + banknoteHeight) {
			banknote.destroy();
			banknotes.splice(i, 1);
			continue;
		}
		// Collect banknote
		if (playerCar.intersects(banknote)) {
			banknote.destroy();
			banknotes.splice(i, 1);
			score += 200; // Add 200 points for each banknote
			coinScoreTxt.setText(score);
			continue;
		}
	}
	// Spawn obstacles
	obstacleSpawnTimer++;
	if (obstacleSpawnTimer >= obstacleSpawnInterval) {
		obstacleSpawnTimer = 0;
		spawnObstacle();
	}
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove if off screen
		if (obs.y > 2732 + obstacleCarHeight) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision detection
		if (playerCar.intersects(obs)) {
			gameOver();
			return;
		}
	}
	// Update distance (for possible future use)
	distance += speed;
	// Do not update score or coinScoreTxt here; only update when collecting coins
	// scoreTxt.setText(score);//{2B} (removed)
	// Gradually increase speed for difficulty
	if (LK.ticks % 180 === 0 && speed < 36) {
		speed += 1;
	}
};
// Spawn an obstacle car in a random lane
function spawnObstacle() {
	// Synchronize the red car (obstacle) to the blue car (player) on spawn
	var obs = new ObstacleCar();
	obs.x = playerCar.x;
	obs.y = -obstacleCarHeight / 2;
	obs.speedY = speed;
	obstacles.push(obs);
	game.addChild(obs);
}
// Game over logic
function gameOver() {
	isGameOver = true;
	LK.effects.flashScreen(0xff0000, 800);
	LK.showGameOver();
}
// Reset on game restart
game.on('reset', function () {
	// Remove all obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].destroy();
	}
	obstacles = [];
	// Remove all coins
	for (var i = 0; i < coins.length; i++) {
		coins[i].destroy();
	}
	coins = [];
	// Remove all banknotes
	for (var i = 0; i < banknotes.length; i++) {
		banknotes[i].destroy();
	}
	banknotes = [];
	// Remove all lane markings
	for (var i = 0; i < laneMarkings.length; i++) {
		laneMarkings[i].destroy();
	}
	laneMarkings = [];
	// Remove all trees
	for (var i = 0; i < trees.length; i++) {
		trees[i].destroy();
	}
	trees = [];
	// Recreate lane markings as dashed
	var dashLength = 80;
	var dashGap = 80;
	var dashesPerMarking = Math.floor(laneMarkingHeight / (dashLength + dashGap));
	for (var i = 0; i < laneCount - 1; i++) {
		for (var j = 0; j < Math.ceil(2732 / laneMarkingSpacing) + 2; j++) {
			var baseY = j * laneMarkingSpacing - laneMarkingHeight / 2;
			for (var d = 0; d < dashesPerMarking; d++) {
				var marking = new LaneMarking();
				marking.x = roadLeft + laneWidth * (i + 1);
				marking.y = baseY + d * (dashLength + dashGap);
				marking.speedY = speed;
				marking.height = dashLength;
				marking.width = laneMarkingWidth;
				laneMarkings.push(marking);
				game.addChild(marking);
			}
		}
	}
	// Recreate trees (slightly more trees)
	for (var side = 0; side < 2; side++) {
		var xPos = side === 0 ? roadLeft - treeWidth / 2 - 30 : roadRight + treeWidth / 2 + 30;
		for (var j = 0; j < 6; j++) {
			// 6 trees per side! 
			var tree = new Tree();
			tree.x = xPos;
			tree.y = j * (2732 / 6) + 100;
			tree.speedY = speed;
			trees.push(tree);
			game.addChild(tree);
		}
	}
	// Reset player position
	playerCar.x = laneCenters[1];
	playerCar.y = 2732 - 400;
	playerCar.speedX = 0;
	moveLeft = false;
	moveRight = false;
	updatePlayerSpeed();
	// Reset score and distance
	score = 0;
	distance = 0;
	coinScoreTxt.setText('0'); // Reset coin score indicator
	isGameOver = false;
	speed = 18;
	obstacleSpawnTimer = 0;
});
// Prevent placing anything in top left 100x100 px (no code needed, just a reminder)