Cursor left and right to change speed and direction.
I noticed some interest in writing platformers, so I put together this demo of how to do a very long scrolling map. (The sprite is from Micropower's Castle Quest off the BBC Micro - obviously you wouldn't use this actual graphic in your game. It was the only one I could find for a quick demo) I haven't implemented wraparound but that shouldn't be hard. I wrote a clone of Rocket Raid (aka Scramble) with this technique - http://scratch.mit.edu/projects/21406819/ You could also use it to do a version of Defender if no-one has done that here yet? This release removes an unnecessary sprite and consolidates down to one script. Graham