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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Fruit = Container.expand(function (fruitType) {
	var self = Container.call(this);
	self.fruitType = fruitType || 'apple';
	self.points = 10;
	if (self.fruitType === 'orange') {
		self.points = 15;
	} else if (self.fruitType === 'banana') {
		self.points = 20;
	} else if (self.fruitType === 'grape') {
		self.points = 25;
	}
	var fruitGraphics = self.attachAsset(self.fruitType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = Math.random() * 3 + 2;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Gun = Container.expand(function () {
	var self = Container.call(this);
	var gunGraphics = self.attachAsset('gun', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
// Create beautiful gradient background
var gradientHeight = 2732;
var gradientSteps = 20;
var stepHeight = gradientHeight / gradientSteps;
for (var i = 0; i < gradientSteps; i++) {
	var progress = i / (gradientSteps - 1);
	// Interpolate between warm orange/pink at top (0xff6b35) to light blue at bottom (0x87ceeb)
	var topColor = {
		r: 255,
		g: 107,
		b: 53
	}; // Warm orange
	var bottomColor = {
		r: 135,
		g: 206,
		b: 235
	}; // Light blue
	var r = Math.round(topColor.r + (bottomColor.r - topColor.r) * progress);
	var g = Math.round(topColor.g + (bottomColor.g - topColor.g) * progress);
	var b = Math.round(topColor.b + (bottomColor.b - topColor.b) * progress);
	var color = r << 16 | g << 8 | b;
	var gradientStripe = LK.getAsset('gradientStripe_' + i, {
		width: 2048,
		height: stepHeight + 2,
		color: color,
		shape: 'box'
	});
	gradientStripe.x = 0;
	gradientStripe.y = i * stepHeight;
	game.addChild(gradientStripe);
}
var gun = game.addChild(new Gun());
gun.x = 2048 / 2;
gun.y = 2732 - 200;
var bullets = [];
var fruits = [];
var lives = 3;
var gameSpeed = 1;
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var livesTxt = new Text2('❤️❤️❤️', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(livesTxt);
var fruitTypes = ['apple', 'orange', 'banana', 'grape'];
var fruitSpawnTimer = 0;
var fruitSpawnRate = 120;
function spawnFruit() {
	var randomType = fruitTypes[Math.floor(Math.random() * fruitTypes.length)];
	var newFruit = new Fruit(randomType);
	newFruit.x = Math.random() * (2048 - 300) + 150;
	newFruit.y = -100;
	newFruit.speed *= gameSpeed;
	fruits.push(newFruit);
	game.addChild(newFruit);
}
function shootBullet() {
	var newBullet = new Bullet();
	newBullet.x = gun.x;
	newBullet.y = gun.y - 50;
	bullets.push(newBullet);
	game.addChild(newBullet);
	LK.getSound('shoot').play();
}
game.down = function (x, y, obj) {
	shootBullet();
};
game.move = function (x, y, obj) {
	gun.x = Math.max(150, Math.min(2048 - 150, x));
};
game.update = function () {
	fruitSpawnTimer++;
	if (fruitSpawnTimer >= fruitSpawnRate / gameSpeed) {
		spawnFruit();
		fruitSpawnTimer = 0;
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.y < -100) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-fruit collisions
		for (var j = fruits.length - 1; j >= 0; j--) {
			var fruit = fruits[j];
			if (bullet.intersects(fruit)) {
				LK.setScore(LK.getScore() + fruit.points);
				scoreTxt.setText('Score: ' + LK.getScore());
				LK.effects.flashObject(fruit, 0xffffff, 200);
				LK.getSound('hit').play();
				bullet.destroy();
				bullets.splice(i, 1);
				fruit.destroy();
				fruits.splice(j, 1);
				break;
			}
		}
	}
	// Update fruits
	for (var k = fruits.length - 1; k >= 0; k--) {
		var fruit = fruits[k];
		if (fruit.y > 2732 + 100) {
			lives--;
			var hearts = '';
			for (var h = 0; h < lives; h++) {
				hearts += '❤️';
			}
			livesTxt.setText(hearts);
			if (lives <= 0) {
				LK.showGameOver();
				return;
			}
			fruit.destroy();
			fruits.splice(k, 1);
		}
	}
	// Increase game speed over time
	if (LK.ticks % 1800 === 0) {
		gameSpeed += 0.2;
		fruitSpawnRate = Math.max(30, fruitSpawnRate - 5);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -57,8 +57,39 @@
 
 /**** 
 * Game Code
 ****/ 
+// Create beautiful gradient background
+var gradientHeight = 2732;
+var gradientSteps = 20;
+var stepHeight = gradientHeight / gradientSteps;
+for (var i = 0; i < gradientSteps; i++) {
+	var progress = i / (gradientSteps - 1);
+	// Interpolate between warm orange/pink at top (0xff6b35) to light blue at bottom (0x87ceeb)
+	var topColor = {
+		r: 255,
+		g: 107,
+		b: 53
+	}; // Warm orange
+	var bottomColor = {
+		r: 135,
+		g: 206,
+		b: 235
+	}; // Light blue
+	var r = Math.round(topColor.r + (bottomColor.r - topColor.r) * progress);
+	var g = Math.round(topColor.g + (bottomColor.g - topColor.g) * progress);
+	var b = Math.round(topColor.b + (bottomColor.b - topColor.b) * progress);
+	var color = r << 16 | g << 8 | b;
+	var gradientStripe = LK.getAsset('gradientStripe_' + i, {
+		width: 2048,
+		height: stepHeight + 2,
+		color: color,
+		shape: 'box'
+	});
+	gradientStripe.x = 0;
+	gradientStripe.y = i * stepHeight;
+	game.addChild(gradientStripe);
+}
 var gun = game.addChild(new Gun());
 gun.x = 2048 / 2;
 gun.y = 2732 - 200;
 var bullets = [];