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

/**** 
* Classes
****/ 
var F1Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('f1Car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lane = 1; // 0 = left, 1 = center, 2 = right
	self.isJumping = false;
	self.jumpStartY = 0;
	self.moveToLane = function (targetLane) {
		if (targetLane < 0 || targetLane > 2 || self.isJumping) return;
		self.lane = targetLane;
		var targetX = lanePositions[targetLane];
		tween(self, {
			x: targetX
		}, {
			duration: 200,
			easing: tween.easeOut
		});
	};
	self.jump = function () {
		if (self.isJumping) return;
		self.isJumping = true;
		self.jumpStartY = self.y;
		// Jump animation
		tween(self, {
			y: self.jumpStartY - 100,
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 600,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(self, {
					y: self.jumpStartY,
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 600,
					easing: tween.easeIn,
					onFinish: function onFinish() {
						self.isJumping = false;
					}
				});
			}
		});
		// Award points and play sound
		LK.setScore(LK.getScore() + 5);
		LK.getSound('jump').play();
	};
	return self;
});
var TrafficCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('trafficCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.lane = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x228B22
});

/**** 
* Game Code
****/ 
// Lane positions
var lanePositions = [2048 / 2 - 300, 2048 / 2, 2048 / 2 + 300];
// Create road background
var roadBg = game.addChild(LK.getAsset('road', {
	anchorX: 0.5,
	anchorY: 0,
	x: 2048 / 2,
	y: 0,
	scaleY: 10
}));
// Create lane dividers
var leftLane = game.addChild(LK.getAsset('lane', {
	anchorX: 0.5,
	anchorY: 0,
	x: lanePositions[0] + 150,
	y: 0
}));
var rightLane = game.addChild(LK.getAsset('lane', {
	anchorX: 0.5,
	anchorY: 0,
	x: lanePositions[1] + 150,
	y: 0
}));
// Create player car
var playerCar = game.addChild(new F1Car());
playerCar.x = lanePositions[1];
playerCar.y = 2200;
// Traffic management
var trafficCars = [];
var spawnTimer = 0;
var gameSpeed = 1;
var difficultyTimer = 0;
// Score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Control variables
var dragStartX = 0;
var dragStartY = 0;
var isDragging = false;
var lastMoveTime = 0;
// Touch controls
game.down = function (x, y, obj) {
	dragStartX = x;
	dragStartY = y;
	isDragging = true;
	lastMoveTime = Date.now();
};
game.move = function (x, y, obj) {
	if (!isDragging) return;
	var deltaX = x - dragStartX;
	var deltaY = y - dragStartY;
	var currentTime = Date.now();
	// Lane switching (horizontal swipe)
	if (Math.abs(deltaX) > 150 && Math.abs(deltaX) > Math.abs(deltaY)) {
		if (deltaX > 0 && playerCar.lane < 2) {
			playerCar.moveToLane(playerCar.lane + 1);
		} else if (deltaX < 0 && playerCar.lane > 0) {
			playerCar.moveToLane(playerCar.lane - 1);
		}
		isDragging = false;
		return;
	}
	// Forward/backward movement (vertical swipe)
	if (Math.abs(deltaY) > 100 && Math.abs(deltaY) > Math.abs(deltaX)) {
		if (deltaY < 0) {
			// Swipe up - move forward
			var targetY = Math.max(playerCar.y - 200, 1800);
			tween(playerCar, {
				y: targetY
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		} else {
			// Swipe down - move backward
			var targetY = Math.min(playerCar.y + 200, 2400);
			tween(playerCar, {
				y: targetY
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
		isDragging = false;
		return;
	}
};
game.up = function (x, y, obj) {
	if (!isDragging) return;
	var deltaX = x - dragStartX;
	var deltaY = y - dragStartY;
	var swipeDistance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
	// Tap for jump
	if (swipeDistance < 50) {
		playerCar.jump();
	}
	isDragging = false;
};
// Spawn traffic
function spawnTraffic() {
	var lane = Math.floor(Math.random() * 3);
	var traffic = new TrafficCar();
	traffic.x = lanePositions[lane];
	traffic.y = -100;
	traffic.lane = lane;
	traffic.speed = 8 + gameSpeed * 2;
	// Random car colors
	var colors = [0x0066FF, 0xFF6600, 0x9900FF, 0x00FF99];
	traffic.tint = colors[Math.floor(Math.random() * colors.length)];
	trafficCars.push(traffic);
	game.addChild(traffic);
}
// Check collisions
function checkCollisions() {
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		var traffic = trafficCars[i];
		// Check collision with player (only if not jumping)
		if (!playerCar.isJumping && traffic.lane === playerCar.lane) {
			var distance = Math.abs(traffic.y - playerCar.y);
			if (distance < 150) {
				// Collision detected
				LK.getSound('crash').play();
				LK.effects.flashScreen(0xFF0000, 1000);
				LK.showGameOver();
				return;
			}
		}
		// Remove off-screen traffic
		if (traffic.y > 2800) {
			traffic.destroy();
			trafficCars.splice(i, 1);
		}
	}
}
// Main game loop
game.update = function () {
	// Update score display
	scoreTxt.setText(LK.getScore());
	// Spawn traffic
	spawnTimer++;
	var spawnRate = Math.max(30 - Math.floor(gameSpeed * 3), 15);
	if (spawnTimer >= spawnRate) {
		spawnTimer = 0;
		spawnTraffic();
	}
	// Increase difficulty over time
	difficultyTimer++;
	if (difficultyTimer >= 300) {
		// Every 5 seconds
		difficultyTimer = 0;
		gameSpeed += 0.1;
	}
	// Check collisions
	checkCollisions();
	// Add survival points
	if (LK.ticks % 60 === 0) {
		// Every second
		LK.setScore(LK.getScore() + 1);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -35,17 +35,17 @@
 			y: self.jumpStartY - 100,
 			scaleX: 1.2,
 			scaleY: 1.2
 		}, {
-			duration: 300,
+			duration: 600,
 			easing: tween.easeOut,
 			onFinish: function onFinish() {
 				tween(self, {
 					y: self.jumpStartY,
 					scaleX: 1,
 					scaleY: 1
 				}, {
-					duration: 300,
+					duration: 600,
 					easing: tween.easeIn,
 					onFinish: function onFinish() {
 						self.isJumping = false;
 					}