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

/**** 
* Classes
****/ 
var Cactus = Container.expand(function (type) {
	var self = Container.call(this);
	var assetName = type === 'tall' ? 'tallCactus' : 'smallCactus';
	var cactusGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.type = type;
	self.speed = gameSpeed;
	self.passed = false;
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});
var Chicken = Container.expand(function () {
	var self = Container.call(this);
	var chickenGraphics = self.attachAsset('chicken', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.groundY = 2732 - 200;
	self.jumpStartY = self.groundY;
	self.isJumping = false;
	self.jumpVelocity = 0;
	self.gravity = 1.2;
	self.maxJumpVelocity = -45;
	self.jumpChargeTime = 0;
	self.isCharging = false;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.jumpVelocity;
			self.jumpVelocity += self.gravity;
			if (self.y >= self.groundY) {
				self.y = self.groundY;
				self.isJumping = false;
				self.jumpVelocity = 0;
			}
		}
		if (self.isCharging && self.jumpChargeTime < 30) {
			self.jumpChargeTime++;
		}
	};
	self.startJump = function () {
		if (!self.isJumping) {
			self.isCharging = true;
			self.jumpChargeTime = 0;
		}
	};
	self.executeJump = function () {
		if (!self.isJumping && self.isCharging) {
			var jumpPower = Math.min(self.jumpChargeTime / 30, 1);
			self.jumpVelocity = self.maxJumpVelocity * (0.4 + jumpPower * 0.6);
			self.isJumping = true;
			self.isCharging = false;
			self.jumpChargeTime = 0;
			LK.getSound('jump').play();
		}
	};
	return self;
});
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var cloudGraphics = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cloudGraphics.alpha = 0.7;
	self.speed = 1;
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var gameSpeed = 8;
var maxGameSpeed = 20;
var speedIncrement = 0.02;
var cactusSpawnTimer = 0;
var cactusSpawnInterval = 90;
var minSpawnInterval = 45;
var cloudSpawnTimer = 0;
var distanceTraveled = 0;
var lastScoreSound = 0;
var jumpScore = 0;
var chicken;
var cacti = [];
var clouds = [];
var ground;
var isGameRunning = true;
var isJumpPressed = false;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 1.0
}));
ground.x = 0;
ground.y = 2732 - 140;
// Create chicken
chicken = game.addChild(new Chicken());
chicken.x = 300;
chicken.y = chicken.groundY;
// Score display for cactus jumps
var jumpScoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
jumpScoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(jumpScoreText);
jumpScoreText.y = 20;
// Distance display
var scoreText = new Text2('Distance: 0m', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreText);
scoreText.x = -20;
scoreText.y = 20;
// Instructions
var instructionText = new Text2('TAP & HOLD TO JUMP HIGHER', {
	size: 45,
	fill: 0xFFFFFF
});
instructionText.anchor.set(0.5, 0);
LK.gui.top.addChild(instructionText);
instructionText.y = 100;
// Game controls
game.down = function (x, y, obj) {
	if (isGameRunning) {
		isJumpPressed = true;
		chicken.startJump();
	}
};
game.up = function (x, y, obj) {
	if (isGameRunning && isJumpPressed) {
		isJumpPressed = false;
		chicken.executeJump();
	}
};
function spawnCactus() {
	var cactusType = Math.random() < 0.6 ? 'small' : 'tall';
	var newCactus = new Cactus(cactusType);
	newCactus.x = 2048 + 100;
	newCactus.y = 2732 - 200;
	newCactus.speed = gameSpeed;
	cacti.push(newCactus);
	game.addChild(newCactus);
}
function spawnCloud() {
	var newCloud = new Cloud();
	newCloud.x = 2048 + 200;
	newCloud.y = 200 + Math.random() * 400;
	clouds.push(newCloud);
	game.addChild(newCloud);
}
function checkCollisions() {
	for (var i = 0; i < cacti.length; i++) {
		var cactus = cacti[i];
		if (chicken.intersects(cactus)) {
			isGameRunning = false;
			LK.effects.flashScreen(0xFF0000, 800);
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 400);
			return;
		}
	}
}
function updateScore() {
	distanceTraveled = Math.floor(LK.ticks / 6);
	scoreText.setText('Distance: ' + distanceTraveled + 'm');
	// Play score sound every 100 meters
	if (distanceTraveled > 0 && distanceTraveled % 100 === 0 && distanceTraveled !== lastScoreSound) {
		LK.getSound('score').play();
		lastScoreSound = distanceTraveled;
	}
}
function checkCactusJumps() {
	for (var i = 0; i < cacti.length; i++) {
		var cactus = cacti[i];
		// Check if chicken has passed the cactus (chicken is to the right of cactus)
		if (!cactus.passed && chicken.x > cactus.x + 30) {
			cactus.passed = true;
			jumpScore++;
			LK.setScore(jumpScore);
			jumpScoreText.setText('Score: ' + jumpScore);
			LK.getSound('score').play();
		}
	}
}
function increaseDifficulty() {
	// Gradually increase speed
	if (gameSpeed < maxGameSpeed) {
		gameSpeed += speedIncrement;
	}
	// Decrease spawn interval over time
	if (cactusSpawnInterval > minSpawnInterval) {
		cactusSpawnInterval -= 0.05;
	}
}
game.update = function () {
	if (!isGameRunning) return;
	updateScore();
	increaseDifficulty();
	// Spawn cacti
	cactusSpawnTimer++;
	if (cactusSpawnTimer >= cactusSpawnInterval) {
		spawnCactus();
		cactusSpawnTimer = 0;
	}
	// Spawn clouds
	cloudSpawnTimer++;
	if (cloudSpawnTimer >= 180) {
		spawnCloud();
		cloudSpawnTimer = 0;
	}
	// Update and clean up cacti
	for (var i = cacti.length - 1; i >= 0; i--) {
		var cactus = cacti[i];
		cactus.speed = gameSpeed;
		if (cactus.x < -100) {
			cactus.destroy();
			cacti.splice(i, 1);
		}
	}
	// Update and clean up clouds
	for (var i = clouds.length - 1; i >= 0; i--) {
		var cloud = clouds[i];
		if (cloud.x < -200) {
			cloud.destroy();
			clouds.splice(i, 1);
		}
	}
	checkCollisions();
	checkCactusJumps();
	// Hide instructions after first jump
	if (chicken.isJumping && instructionText.alpha > 0) {
		tween(instructionText, {
			alpha: 0
		}, {
			duration: 1000
		});
	}
};

===================================================================
--- original.js
+++ change.js
@@ -57,10 +57,9 @@
 	};
 	self.executeJump = function () {
 		if (!self.isJumping && self.isCharging) {
 			var jumpPower = Math.min(self.jumpChargeTime / 30, 1);
-			var scoreMultiplier = 1 + jumpScore * 0.5;
-			self.jumpVelocity = self.maxJumpVelocity * (0.4 + jumpPower * 0.6) * scoreMultiplier;
+			self.jumpVelocity = self.maxJumpVelocity * (0.4 + jumpPower * 0.6);
 			self.isJumping = true;
 			self.isCharging = false;
 			self.jumpChargeTime = 0;
 			LK.getSound('jump').play();