Scratch

Hi lonwol - the Troubleshooting forum is for reporting bugs. If you need help making a project, please post in All About Scratch. Thanks!

Can you give more information?

I am also looking for an answer to the same problem, I think there should be an answer in this thread soon: http://scratch.mit.edu/forums/viewtopic.php?id=25113

How fast your objects are moving will affect most collision detection methods. So will whether the wall is a sprite or part of a background. People often ask about collision detection but the best thing to do is post the most current version of your unfinished game. Then we can pick which one is best suited for your needs.

Here is an idea I had merging a couple of ideas I've read. Lets call your player object Car and the wall, um, Wall, lol. Make two sprites for the Car. Car1 will be the visible sprite that the player sees in the game, Car2 will be the exact same image (and size) as Car1 but is invisible (fully ghosted.) Anytime the player moves, move Car2 first. If Car2 hits nothing, move Car1 to the same position. If Car2 hits the wall, do not move Car1 but instead move Car2 again, back to Car1's position. The point of this is that whatever collision detection method we use, this will keep the player from appearing to go into a wall. But it may not be necessary in the long run, we'll see. Please upload your project and add a link in a new post here. Peace.