===================================================================
--- original.js
+++ change.js
@@ -1,81 +1,81 @@
-/****
+/**** 
 * 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;
-  };
+	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;
-    }
-  };
+	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 
+	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);
+	var platform = new Platform();
+	platform.x = Math.random() * 2048;
+	platform.y = i * 500;
+	platforms.push(platform);
+	game.addChild(platform);
 }
 // Handle game updates
 game.update = function () {
-  platforms.forEach(function (platform) {
-    platform.update();
-    if (cat.intersects(platform) && cat.velocityY > 0) {
-      cat.jump();
-    }
-  });
-  cat.update();
+	platforms.forEach(function (platform) {
+		platform.update();
+		if (cat.intersects(platform) && cat.velocityY > 0 && cat.y < platform.y + platform.height / 2) {
+			cat.jump();
+		}
+	});
+	cat.update();
 };
 // Handle touch events
 game.down = function (x, y, obj) {
-  cat.jump();
+	cat.jump();
 };
\ No newline at end of file