/**** 
* Classes
****/ 
// Cat class
var Cat = Container.expand(function () {
	var self = Container.call(this);
	var catGraphics = self.attachAsset('cat', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.jumpSpeed = -20;
	self.gravity = 1;
	self.velocityY = 0;
	self.update = function () {
		self.y += self.velocityY;
		self.velocityY += self.gravity;
		if (self.y > 2732 - catGraphics.height / 2) {
			self.y = 2732 - catGraphics.height / 2;
			self.velocityY = 0;
		}
	};
	self.jump = function () {
		self.velocityY = self.jumpSpeed;
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Platform class
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = -platformGraphics.height;
			self.x = Math.random() * 2048;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Initialize game elements
var platforms = [];
var cat = game.addChild(new Cat());
cat.x = 1024;
cat.y = 2000;
// Create platforms
for (var i = 0; i < 5; i++) {
	var platform = new Platform();
	platform.x = Math.random() * 2048;
	platform.y = i * 500;
	platforms.push(platform);
	game.addChild(platform);
}
// Handle game updates
var firstJump = true;
game.update = function () {
	platforms.forEach(function (platform) {
		platform.update();
		if (cat.intersects(platform) && cat.velocityY > 0 && cat.y < platform.y + platform.height / 2) {
			if (firstJump) {
				cat.jump();
				firstJump = false;
			}
		}
	});
	cat.update();
};
// Handle touch events
game.down = function (x, y, obj) {
	cat.jump();
};

===================================================================
--- original.js
+++ change.js
@@ -65,13 +65,17 @@
 	platforms.push(platform);
 	game.addChild(platform);
 }
 // Handle game updates
+var firstJump = true;
 game.update = function () {
 	platforms.forEach(function (platform) {
 		platform.update();
 		if (cat.intersects(platform) && cat.velocityY > 0 && cat.y < platform.y + platform.height / 2) {
-			cat.jump();
+			if (firstJump) {
+				cat.jump();
+				firstJump = false;
+			}
 		}
 	});
 	cat.update();
 };