This is a game building block and all code blocks are commented. This block provides an example of how to create a side scrolling game. Felix is stuck at the side of the stage while the floor, trees and mountains scroll past him. This is an extension of the previous project, Scrolling the Background (Single Layer). If you haven't had a look at that yet have a look to understand the basics. This is effect is created with two identical sprites for each layer, each the width of the screen (If you're drawing them in a paint package outside Scratch make sure your image is 480 pixels wide). When the project starts it creates 2 clones for each layer of the sprites and then places each pair side by side on the stage from the bottom up. As Felix walks left and right each layer is scrolled sideways at different rates giving the effect of movement.
Left and Right arrows to make it appear that Felix the Cat is running left and right.