/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	bestScore: 0
});

/**** 
* Classes
****/ 
// Player Car
var Car = Container.expand(function () {
	var self = Container.call(this);
	// Use selected skin color
	var skin = typeof getCurrentSkin === "function" ? getCurrentSkin() : {
		id: 'car',
		color: 0x2196f3
	};
	var carAsset = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
		// width/height default
	});
	carAsset.tint = skin.color;
	// For collision box, use the car asset's size
	self.width = carAsset.width;
	self.height = carAsset.height;
	return self;
});
// Obstacle (legacy, not used anymore)
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obsAsset = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = obsAsset.width;
	self.height = obsAsset.height;
	// For collision
	return self;
});
// Road Stripe
var Stripe = Container.expand(function () {
	var self = Container.call(this);
	var stripeAsset = self.attachAsset('stripe', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = stripeAsset.width;
	self.height = stripeAsset.height;
	return self;
});
// Coin class removed (no longer needed)
// Vehicle (moving obstacle)
var Vehicle = Container.expand(function () {
	var self = Container.call(this);
	// Use car asset for vehicles, random color for variety
	var vehicleColors = [0xd32f2f, 0x2196f3, 0xfbc02d, 0x43a047, 0x8e24aa, 0x00897b];
	var color = vehicleColors[Math.floor(Math.random() * vehicleColors.length)];
	var vehicleAsset = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5,
		color: color
	});
	vehicleAsset.tint = color;
	self.width = vehicleAsset.width;
	self.height = vehicleAsset.height;
	// Vehicle speed (relative to road speed, can be positive or negative for overtaking/slow cars)
	self.relativeSpeed = (Math.random() < 0.5 ? 1 : -1) * (6 + Math.random() * 8); // -14 to +14
	// Track lastY for event triggers
	self.lastY = self.y;
	// Track if already collided
	self.lastWasIntersecting = false;
	return self;
});

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

/**** 
* Game Code
****/ 
// LK.init.shape('coin', {width:100, height:100, color:0xffeb3b, shape:'ellipse'})
// Game area
// Car (player)
// Obstacle
// Coin
// Road stripes
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var ROAD_WIDTH = 1200;
var ROAD_X = (GAME_WIDTH - ROAD_WIDTH) / 2;
var ROAD_Y = 0;
var ROAD_HEIGHT = GAME_HEIGHT;
// --- Skins Store System ---
// Skins data
var carSkins = [{
	id: 'car',
	name: 'Blue',
	color: 0x2196f3,
	unlocked: true,
	price: 0
}, {
	id: 'car_red',
	name: 'Red',
	color: 0xd32f2f,
	unlocked: false,
	price: 5000
}, {
	id: 'car_green',
	name: 'Green',
	color: 0x43a047,
	unlocked: false,
	price: 10000
}, {
	id: 'car_gold',
	name: 'Gold',
	color: 0xfbc02d,
	unlocked: false,
	price: 20000
}];
// Load unlocked skins from storage
if (typeof storage.unlockedSkins === "undefined") {
	storage.unlockedSkins = {
		car: true
	};
}
for (var i = 0; i < carSkins.length; i++) {
	if (storage.unlockedSkins[carSkins[i].id]) carSkins[i].unlocked = true;
}
// Selected skin
var selectedSkinIdx = 0;
if (typeof storage.selectedSkinIdx !== "undefined") {
	selectedSkinIdx = storage.selectedSkinIdx;
}
// Helper to get current skin
function getCurrentSkin() {
	return carSkins[selectedSkinIdx];
}
// --- Skins Store UI ---
var storeOpen = false;
var storePanel = new Container();
storePanel.visible = false;
storePanel.x = GAME_WIDTH / 2;
storePanel.y = GAME_HEIGHT / 2;
game.addChild(storePanel);
// Store background
var storeBg = storePanel.attachAsset('obstacle', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 900,
	height: 1200,
	color: 0x222222
});
storeBg.alpha = 0.98;
// Store title
var storeTitle = new Text2('SKINS STORE', {
	size: 90,
	fill: "#fff"
});
storeTitle.anchor.set(0.5, 0);
storeTitle.y = -520;
storePanel.addChild(storeTitle);
// Skin preview
var skinPreview = new Container();
skinPreview.x = 0;
skinPreview.y = -120;
storePanel.addChild(skinPreview);
var skinPreviewAsset = null;
function updateSkinPreview() {
	if (skinPreviewAsset) {
		skinPreviewAsset.destroy();
		skinPreviewAsset = null;
	}
	var skin = carSkins[selectedSkinIdx];
	skinPreviewAsset = skinPreview.attachAsset(skin.id === 'car' ? 'car' : 'car', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 320,
		height: 520,
		color: skin.color
	});
}
updateSkinPreview();
// Skin name
var skinNameTxt = new Text2('', {
	size: 70,
	fill: "#fff"
});
skinNameTxt.anchor.set(0.5, 0.5);
skinNameTxt.y = 220;
storePanel.addChild(skinNameTxt);
// Unlock/buy/select button
var skinActionBtn = new Container();
skinActionBtn.x = 0;
skinActionBtn.y = 400;
storePanel.addChild(skinActionBtn);
var skinActionAsset = skinActionBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 400,
	height: 120,
	color: 0x43a047
});
skinActionAsset.alpha = 0.9;
var skinActionTxt = new Text2('', {
	size: 60,
	fill: "#fff"
});
skinActionTxt.anchor.set(0.5, 0.5);
skinActionBtn.addChild(skinActionTxt);
// Left/right arrows
var leftArrowBtn = new Container();
var leftArrowAsset = leftArrowBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 120,
	height: 120,
	color: 0x90caf9
});
leftArrowBtn.x = -320;
leftArrowBtn.y = 0;
storePanel.addChild(leftArrowBtn);
var leftArrowTxt = new Text2('<', {
	size: 90,
	fill: "#fff"
});
leftArrowTxt.anchor.set(0.5, 0.5);
leftArrowBtn.addChild(leftArrowTxt);
var rightArrowBtn = new Container();
var rightArrowAsset = rightArrowBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 120,
	height: 120,
	color: 0x90caf9
});
rightArrowBtn.x = 320;
rightArrowBtn.y = 0;
storePanel.addChild(rightArrowBtn);
var rightArrowTxt = new Text2('>', {
	size: 90,
	fill: "#fff"
});
rightArrowTxt.anchor.set(0.5, 0.5);
rightArrowBtn.addChild(rightArrowTxt);
// Close button
var closeBtn = new Container();
var closeAsset = closeBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 120,
	height: 120,
	color: 0xd32f2f
});
closeBtn.x = 0;
closeBtn.y = 540;
storePanel.addChild(closeBtn);
var closeTxt = new Text2('CLOSE', {
	size: 48,
	fill: "#fff"
});
closeTxt.anchor.set(0.5, 0.5);
closeBtn.addChild(closeTxt);
// Coins display
var coinsTxt = new Text2('', {
	size: 60,
	fill: "#fff"
});
coinsTxt.anchor.set(0.5, 0.5);
coinsTxt.y = -400;
storePanel.addChild(coinsTxt);
// Helper to update store UI
function updateStoreUI() {
	var skin = carSkins[selectedSkinIdx];
	skinNameTxt.setText(skin.name);
	updateSkinPreview();
	// Show coins
	coinsTxt.setText('Coins: ' + (score || 0));
	if (skin.unlocked) {
		if (selectedSkinIdx === storage.selectedSkinIdx) {
			skinActionTxt.setText('SELECTED');
			skinActionAsset.tint = 0x90caf9;
		} else {
			skinActionTxt.setText('SELECT');
			skinActionAsset.tint = 0x43a047;
		}
	} else {
		skinActionTxt.setText('BUY (' + skin.price + ')');
		skinActionAsset.tint = 0xfbc02d;
	}
}
updateStoreUI();
// Store open button (top right)
var storeBtn = new Container();
var storeBtnAsset = storeBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 120,
	height: 120,
	color: 0x90caf9
});
storeBtn.x = GAME_WIDTH - 160;
storeBtn.y = 160;
game.addChild(storeBtn);
var storeBtnTxt = new Text2('SKINS', {
	size: 40,
	fill: "#fff"
});
storeBtnTxt.anchor.set(0.5, 0.5);
storeBtn.addChild(storeBtnTxt);
// --- End Skins Store System ---
// Player car
var car = new Car();
car.x = GAME_WIDTH / 2;
car.y = GAME_HEIGHT - 500;
game.addChild(car);
// Road stripes
var stripes = [];
var stripeSpacing = 400;
for (var i = 0; i < 8; i++) {
	var stripe = new Stripe();
	stripe.x = GAME_WIDTH / 2;
	stripe.y = i * stripeSpacing + 200;
	stripes.push(stripe);
	game.addChild(stripe);
}
// Vehicles and coins
var vehicles = [];
var coins = [];
// Score
var score = 0;
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Best score
var bestScore = storage.bestScore || 0;
var bestScoreTxt = new Text2('Best: ' + bestScore, {
	size: 60,
	fill: "#fff"
});
bestScoreTxt.anchor.set(0.5, 0);
bestScoreTxt.y = 120;
LK.gui.top.addChild(bestScoreTxt);
// Game speed
var baseSpeed = 18;
var speed = baseSpeed;
var speedIncreaseEvery = 600; // ticks
var maxSpeed = 48;
// Gear system
var gear = 1;
var maxGear = 5;
var minGear = 1;
var gearSpeeds = [0, 18, 26, 34, 42, 48]; // index 0 unused, gear 1-5
// Dragging
var dragCar = false;
var dragOffsetX = 0;
// Drift system state
var isDrifting = false;
var driftDirection = 0; // -1 for left, 1 for right, 0 for none
var driftTimer = 0;
var driftMaxTime = 60; // frames (1 second)
var driftCooldown = 0;
var driftCooldownTime = 40; // frames
var driftAngle = 0; // in radians, for visual tilt
var driftAngleMax = Math.PI / 7; // max tilt angle
var driftSpeedBonus = 1.18; // 18% speed boost during drift
// Gas and brake button state
var gasPressed = false;
var brakePressed = false;
// Touch controls
function clamp(val, min, max) {
	return val < min ? min : val > max ? max : val;
}
function handleMove(x, y, obj) {
	if (storeOpen) return;
	if (dragCar) {
		// Clamp car within road
		var minX = ROAD_X + car.width / 2 + 20;
		var maxX = ROAD_X + ROAD_WIDTH - car.width / 2 - 20;
		var prevX = car.x;
		car.x = clamp(x - dragOffsetX, minX, maxX);
		// Drift trigger: if swipe is fast and not already drifting or on cooldown
		var dx = car.x - prevX;
		if (!isDrifting && driftCooldown === 0 && Math.abs(dx) > 32) {
			isDrifting = true;
			driftDirection = dx > 0 ? 1 : -1;
			driftTimer = 0;
		}
	}
}
game.move = handleMove;
// --- Gas and Brake Buttons ---
var buttonSize = 260;
var buttonMargin = 80;
// Assign unique skin colors to each button based on carSkins
var gasBtn = new Container();
var gasBtnSkin = carSkins[1] || carSkins[0]; // Red or fallback to blue
var gasAsset = gasBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: buttonSize,
	height: buttonSize,
	color: gasBtnSkin.color
});
gasAsset.tint = gasBtnSkin.color;
gasBtn.x = GAME_WIDTH - buttonSize / 2 - buttonMargin;
gasBtn.y = GAME_HEIGHT - buttonSize / 2 - buttonMargin;
game.addChild(gasBtn);
var gasTxt = new Text2('GAS', {
	size: 70,
	fill: "#fff"
});
gasTxt.anchor.set(0.5, 0.5);
gasBtn.addChild(gasTxt);
// Brake button (bottom left)
var brakeBtn = new Container();
var brakeBtnSkin = carSkins[3] || carSkins[0]; // Gold or fallback to blue
var brakeAsset = brakeBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: buttonSize,
	height: buttonSize,
	color: brakeBtnSkin.color
});
brakeAsset.tint = brakeBtnSkin.color;
brakeBtn.x = buttonSize / 2 + buttonMargin;
brakeBtn.y = GAME_HEIGHT - buttonSize / 2 - buttonMargin;
game.addChild(brakeBtn);
var brakeTxt = new Text2('BRAKE', {
	size: 70,
	fill: "#fff"
});
brakeTxt.anchor.set(0.5, 0.5);
brakeBtn.addChild(brakeTxt);
// Gear Up button (bottom center right)
var gearUpBtn = new Container();
var gearUpBtnSkin = carSkins[2] || carSkins[0]; // Green or fallback to blue
var gearUpAsset = gearUpBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: buttonSize,
	height: buttonSize,
	color: gearUpBtnSkin.color
});
gearUpAsset.tint = gearUpBtnSkin.color;
gearUpBtn.x = GAME_WIDTH / 2 + buttonSize + buttonMargin;
gearUpBtn.y = GAME_HEIGHT - buttonSize / 2 - buttonMargin;
game.addChild(gearUpBtn);
var gearUpTxt = new Text2('GEAR+', {
	size: 60,
	fill: "#fff"
});
gearUpTxt.anchor.set(0.5, 0.5);
gearUpBtn.addChild(gearUpTxt);
// Gear Down button (bottom center left)
var gearDownBtn = new Container();
var gearDownBtnSkin = carSkins[0]; // Blue
var gearDownAsset = gearDownBtn.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: buttonSize,
	height: buttonSize,
	color: gearDownBtnSkin.color
});
gearDownAsset.tint = gearDownBtnSkin.color;
gearDownBtn.x = GAME_WIDTH / 2 - buttonSize - buttonMargin;
gearDownBtn.y = GAME_HEIGHT - buttonSize / 2 - buttonMargin;
game.addChild(gearDownBtn);
var gearDownTxt = new Text2('GEAR-', {
	size: 60,
	fill: "#fff"
});
gearDownTxt.anchor.set(0.5, 0.5);
gearDownBtn.addChild(gearDownTxt);
// Gear display (center bottom)
var gearTxt = new Text2('GEAR: 1', {
	size: 80,
	fill: "#fff"
});
gearTxt.anchor.set(0.5, 0.5);
gearTxt.x = GAME_WIDTH / 2;
gearTxt.y = GAME_HEIGHT - buttonSize - buttonMargin - 60;
game.addChild(gearTxt);
// --- Speed Cursor UI ---
// Speed cursor background bar
var speedCursorBg = new Container();
var speedCursorBgAsset = speedCursorBg.attachAsset('obstacle', {
	anchorX: 0.5,
	anchorY: 0,
	width: 80,
	height: 600,
	color: 0x333333
});
speedCursorBgAsset.alpha = 0.5;
speedCursorBg.x = GAME_WIDTH - 120;
speedCursorBg.y = 320;
game.addChild(speedCursorBg);
// Speed cursor fill (shows current speed) - now a square
var speedCursorFill = new Container();
var speedCursorFillAsset = speedCursorFill.attachAsset('car', {
	anchorX: 0.5,
	anchorY: 1,
	width: 120,
	height: 120,
	color: 0x43a047
});
speedCursorFill.x = speedCursorBg.x;
speedCursorFill.y = speedCursorBg.y + speedCursorBgAsset.height - 10;
game.addChild(speedCursorFill);
// Speed cursor text
var speedCursorTxt = new Text2('SPEED', {
	size: 48,
	fill: "#fff"
});
speedCursorTxt.anchor.set(0.5, 1);
speedCursorTxt.x = speedCursorBg.x;
speedCursorTxt.y = speedCursorBg.y - 12;
game.addChild(speedCursorTxt);
// Helper to check if a point is inside a button
function isInsideBtn(btn, x, y) {
	var bx = btn.x,
		by = btn.y;
	var hw = buttonSize / 2,
		hh = buttonSize / 2;
	return x >= bx - hw && x <= bx + hw && y >= by - hh && y <= by + hh;
}
// Down event
game.down = function (x, y, obj) {
	// --- Skins Store UI events ---
	if (storeOpen) {
		// Convert to storePanel local
		var local = {
			x: x - storePanel.x,
			y: y - storePanel.y
		};
		// Close
		if (local.y > closeBtn.y - 60 && local.y < closeBtn.y + 60 && local.x > closeBtn.x - 60 && local.x < closeBtn.x + 60) {
			storePanel.visible = false;
			storeOpen = false;
			return;
		}
		// Left arrow
		if (local.y > leftArrowBtn.y - 60 && local.y < leftArrowBtn.y + 60 && local.x > leftArrowBtn.x - 60 && local.x < leftArrowBtn.x + 60) {
			selectedSkinIdx = (selectedSkinIdx - 1 + carSkins.length) % carSkins.length;
			updateStoreUI();
			return;
		}
		// Right arrow
		if (local.y > rightArrowBtn.y - 60 && local.y < rightArrowBtn.y + 60 && local.x > rightArrowBtn.x - 60 && local.x < rightArrowBtn.x + 60) {
			selectedSkinIdx = (selectedSkinIdx + 1) % carSkins.length;
			updateStoreUI();
			return;
		}
		// Action button
		if (local.y > skinActionBtn.y - 60 && local.y < skinActionBtn.y + 60 && local.x > skinActionBtn.x - 200 && local.x < skinActionBtn.x + 200) {
			var skin = carSkins[selectedSkinIdx];
			if (skin.unlocked) {
				storage.selectedSkinIdx = selectedSkinIdx;
				updateStoreUI();
				// Recreate car with new skin
				car.destroy();
				car = new Car();
				car.x = GAME_WIDTH / 2;
				car.y = GAME_HEIGHT - 500;
				game.addChild(car);
			} else if ((score || 0) >= skin.price) {
				// Unlock skin
				skin.unlocked = true;
				storage.unlockedSkins[skin.id] = true;
				// Deduct coins (score)
				score -= skin.price;
				scoreTxt.setText(score);
				updateStoreUI();
			}
			return;
		}
		return;
	}
	// Open store button
	if (x > storeBtn.x - 60 && x < storeBtn.x + 60 && y > storeBtn.y - 60 && y < storeBtn.y + 60) {
		storePanel.visible = true;
		storeOpen = true;
		updateStoreUI();
		return;
	}
	// Only start drag if touch is on car
	var local = car.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (local.x >= -car.width / 2 && local.x <= car.width / 2 && local.y >= -car.height / 2 && local.y <= car.height / 2) {
		dragCar = true;
		dragOffsetX = x - car.x;
	}
	// Gas/brake buttons
	if (isInsideBtn(gasBtn, x, y)) {
		gasPressed = true;
		gasAsset.alpha = 0.7;
	}
	if (isInsideBtn(brakeBtn, x, y)) {
		brakePressed = true;
		brakeAsset.alpha = 0.7;
	}
	// Gear up button
	if (isInsideBtn(gearUpBtn, x, y)) {
		if (gear < maxGear) {
			gear++;
			gearTxt.setText('GEAR: ' + gear);
			// Snap speed to new gear's minimum if below
			if (speed < gearSpeeds[gear]) speed = gearSpeeds[gear];
		}
		gearUpAsset.alpha = 0.7;
	}
	// Gear down button
	if (isInsideBtn(gearDownBtn, x, y)) {
		if (gear > minGear) {
			gear--;
			gearTxt.setText('GEAR: ' + gear);
			// Snap speed to new gear's max if above
			if (speed > gearSpeeds[gear]) speed = gearSpeeds[gear];
		}
		gearDownAsset.alpha = 0.7;
	}
};
// Up event
game.up = function (x, y, obj) {
	if (storeOpen) return;
	dragCar = false;
	gasPressed = false;
	brakePressed = false;
	gasAsset.alpha = 1;
	brakeAsset.alpha = 1;
	gearUpAsset.alpha = 1;
	gearDownAsset.alpha = 1;
};
// Spawning
var obstacleTimer = 0;
var coinTimer = 0;
function spawnVehicle() {
	var lanes = 4;
	var laneWidth = ROAD_WIDTH / lanes;
	var lane = Math.floor(Math.random() * lanes);
	var vehicle = new Vehicle();
	vehicle.x = ROAD_X + laneWidth * (lane + 0.5);
	vehicle.y = -vehicle.height;
	vehicle.lane = lane;
	vehicles.push(vehicle);
	game.addChild(vehicle);
}
// function spawnCoin removed (no longer needed)
// Main update loop
game.update = function () {
	// --- Car stay in middle at start, slow after gear shift, require gas to accelerate ---
	// State: 0 = normal, 1 = holding in middle, 2 = slowing after gear shift, 3 = waiting for gas
	if (typeof carStartState === "undefined") {
		carStartState = 1; // 1 = holding in middle
		carStartTicks = 0;
		carSlowed = false;
		carWaitGas = false;
	}
	if (carStartState === 1) {
		// Hold car in middle for 1.2 seconds (72 ticks)
		car.x = GAME_WIDTH / 2;
		carStartTicks++;
		if (carStartTicks > 72) {
			carStartState = 2;
			carStartTicks = 0;
		}
	} else if (carStartState === 2) {
		// Wait for gear shift, then slow down
		if (gear > 1 && !carSlowed) {
			speed = Math.max(gearSpeeds[gear] * 0.55, gearSpeeds[1]);
			carSlowed = true;
			carStartTicks = 0;
			carStartState = 3;
		}
	} else if (carStartState === 3) {
		// Wait for gas press to allow acceleration
		if (gasPressed) {
			carStartState = 0;
		} else {
			// Gradually slow down if not pressing gas
			speed = Math.max(speed - 0.7, gearSpeeds[1]);
		}
	}
	// Drift update logic
	if (isDrifting) {
		driftTimer++;
		// Smoothly tilt car in drift direction
		driftAngle += (driftDirection * driftAngleMax - driftAngle) * 0.25;
		// Give speed bonus during drift
		speed = Math.min(speed * driftSpeedBonus, gearSpeeds[gear]);
		// End drift after max time or if drag stops
		if (driftTimer > driftMaxTime || !dragCar) {
			isDrifting = false;
			driftCooldown = driftCooldownTime;
		}
	} else {
		// Return car to upright
		driftAngle += (0 - driftAngle) * 0.18;
		if (driftCooldown > 0) driftCooldown--;
	}
	// Gas/brake logic
	if (carStartState === 0) {
		if (gasPressed) {
			speed = Math.min(speed + 0.5, gearSpeeds[gear]);
		} else if (brakePressed) {
			speed = Math.max(speed - 1.2, gearSpeeds[gear - 1] ? gearSpeeds[gear - 1] : baseSpeed * 0.5);
		} else {
			// Speed up over time
			if (LK.ticks % speedIncreaseEvery === 0 && speed < gearSpeeds[gear]) {
				speed += 2;
			}
		}
	}
	// Clamp speed to current gear range
	if (speed > gearSpeeds[gear]) speed = gearSpeeds[gear];
	if (speed < (gearSpeeds[gear - 1] ? gearSpeeds[gear - 1] : baseSpeed * 0.5)) speed = gearSpeeds[gear - 1] ? gearSpeeds[gear - 1] : baseSpeed * 0.5;
	gearTxt.setText('GEAR: ' + gear);
	// Apply drift visual tilt to car
	car.rotation = driftAngle;
	// --- Update Speed Cursor ---
	// Calculate speed percent (0 to 1) relative to min/max
	var minSpeed = gearSpeeds[1];
	var maxSpeedCursor = gearSpeeds[maxGear];
	var speedPercent = (speed - minSpeed) / (maxSpeedCursor - minSpeed);
	if (speedPercent < 0) speedPercent = 0;
	if (speedPercent > 1) speedPercent = 1;
	// Move square block (speed cursor) from bottom up
	var fillMaxHeight = 580;
	var blockSize = 120;
	var minY = speedCursorBg.y + speedCursorBgAsset.height - 10;
	var maxY = speedCursorBg.y + 10 + blockSize / 2;
	speedCursorFill.y = minY - (fillMaxHeight - blockSize) * speedPercent;
	// Set fill color (green to yellow to red)
	var fillColor;
	if (speedPercent < 0.5) {
		// Green to yellow
		var t = speedPercent * 2;
		var r = Math.round(0x43 * (1 - t) + 0xfb * t);
		var g = Math.round(0xa0 * (1 - t) + 0xc0 * t);
		var b = Math.round(0x47 * (1 - t) + 0x2d * t);
		fillColor = r << 16 | g << 8 | b;
	} else {
		// Yellow to red
		var t = (speedPercent - 0.5) * 2;
		var r = Math.round(0xfb * (1 - t) + 0xd3 * t);
		var g = Math.round(0xc0 * (1 - t) + 0x2f * t);
		var b = Math.round(0x2d * (1 - t) + 0x2f * t);
		fillColor = r << 16 | g << 8 | b;
	}
	speedCursorFillAsset.tint = fillColor;
	// Move stripes
	for (var i = 0; i < stripes.length; i++) {
		stripes[i].y += speed;
		if (stripes[i].y > GAME_HEIGHT + stripes[i].height / 2) {
			stripes[i].y -= stripeSpacing * stripes.length;
		}
	}
	// Spawn vehicles
	obstacleTimer += 1;
	if (obstacleTimer > 32 + Math.floor(40 * baseSpeed / speed)) {
		// Spawn 1-2 vehicles per spawn, never in the same lane
		var lanes = 4;
		var usedLanes = [];
		var numVehicles = 1 + (Math.random() < 0.5 ? 1 : 0); // 1 or 2
		for (var i = 0; i < numVehicles; i++) {
			var lane;
			do {
				lane = Math.floor(Math.random() * lanes);
			} while (usedLanes.indexOf(lane) !== -1 && usedLanes.length < lanes);
			usedLanes.push(lane);
			var vehicle = new Vehicle();
			var laneWidth = ROAD_WIDTH / lanes;
			vehicle.x = ROAD_X + laneWidth * (lane + 0.5);
			vehicle.y = -vehicle.height;
			vehicle.lane = lane;
			vehicles.push(vehicle);
			game.addChild(vehicle);
		}
		obstacleTimer = 0;
	}
	// Move vehicles
	for (var i = vehicles.length - 1; i >= 0; i--) {
		var vehicle = vehicles[i];
		// Move vehicle at road speed + its relative speed
		vehicle.lastY = vehicle.y;
		vehicle.y += speed + vehicle.relativeSpeed;
		// Remove if off screen
		if (vehicle.y - vehicle.height / 2 > GAME_HEIGHT + 100 || vehicle.y + vehicle.height / 2 < -200) {
			vehicle.destroy();
			vehicles.splice(i, 1);
			continue;
		}
		// Collision with car (only if visible)
		var isIntersecting = car.intersects(vehicle);
		if (!vehicle.lastWasIntersecting && isIntersecting) {
			// Flash and game over
			LK.effects.flashScreen(0xff0000, 800);
			if (score > bestScore) {
				storage.bestScore = score;
			}
			LK.showGameOver();
			return;
		}
		vehicle.lastWasIntersecting = isIntersecting;
	}
	// Move coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		coin.y += speed;
		// Remove if off screen
		if (coin.y - coin.height / 2 > GAME_HEIGHT + 100) {
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
	}
	score += Math.floor(speed / 4); // Slow down score growth by 75%
	scoreTxt.setText(score);
	// Update store coins display if open
	if (storeOpen && typeof coinsTxt !== "undefined") {
		coinsTxt.setText('Coins: ' + (score || 0));
	}
	// Speed up by 1% for every 2000 score points
	if (typeof lastScoreForSpeed === "undefined") {
		lastScoreForSpeed = 0;
	}
	while (score - lastScoreForSpeed >= 2000) {
		speed = Math.min(Math.round(speed * 1.01), maxSpeed);
		lastScoreForSpeed += 2000;
	}
	if (score > bestScore) {
		bestScore = score;
		bestScoreTxt.setText('Best: ' + bestScore);
		storage.bestScore = bestScore;
	}
	// Persist selected skin
	if (typeof storage.selectedSkinIdx === "undefined") storage.selectedSkinIdx = selectedSkinIdx;else storage.selectedSkinIdx = selectedSkinIdx;
};
// Reset score on new game
score = 0;
scoreTxt.setText(score);
bestScore = storage.bestScore || 0;
bestScoreTxt.setText('Best: ' + bestScore);
// Reset vehicles
for (var i = vehicles.length - 1; i >= 0; i--) {
	if (vehicles[i] && vehicles[i].destroy) vehicles[i].destroy();
}
vehicles = [];
// Reset drift state
isDrifting = false;
driftDirection = 0;
driftTimer = 0;
driftCooldown = 0;
driftAngle = 0;
car.rotation = 0;
// Reset store state
storePanel.visible = false;
storeOpen = false;
// Recreate car with selected skin
if (typeof car !== "undefined" && car.destroy) car.destroy();
car = new Car();
car.x = GAME_WIDTH / 2;
car.y = GAME_HEIGHT - 500;
game.addChild(car);

===================================================================
--- original.js
+++ change.js
@@ -446,10 +446,10 @@
 var gearUpBtnSkin = carSkins[2] || carSkins[0]; // Green or fallback to blue
 var gearUpAsset = gearUpBtn.attachAsset('car', {
 	anchorX: 0.5,
 	anchorY: 0.5,
-	width: buttonSize * 0.7,
-	height: buttonSize * 0.7,
+	width: buttonSize,
+	height: buttonSize,
 	color: gearUpBtnSkin.color
 });
 gearUpAsset.tint = gearUpBtnSkin.color;
 gearUpBtn.x = GAME_WIDTH / 2 + buttonSize + buttonMargin;
@@ -466,10 +466,10 @@
 var gearDownBtnSkin = carSkins[0]; // Blue
 var gearDownAsset = gearDownBtn.attachAsset('car', {
 	anchorX: 0.5,
 	anchorY: 0.5,
-	width: buttonSize * 0.7,
-	height: buttonSize * 0.7,
+	width: buttonSize,
+	height: buttonSize,
 	color: gearDownBtnSkin.color
 });
 gearDownAsset.tint = gearDownBtnSkin.color;
 gearDownBtn.x = GAME_WIDTH / 2 - buttonSize - buttonMargin;