in this project you can control the speed by changing the input in the block that I made. You will notice that the X position and the Y position do not move. This is because the backdrop moves. Also side note you can make a bourd that is infinite if you make a loop of signals that increase the size to infinity. To pass the size limit you must change the costume, set the size, and switch back to the original costume. This can make your projects large. Movement is up arrow, down arrow , and the left and right arrows. Lastly found a glitch but do not know how to stop it, if you tap the space bar it will make a clone that will travel to your mouse pointer. If you hold down the space bar it will make all the clones at once, How do you set a limit?
All code by me, @23Twilights