Heya people

I wondered if you might have an idea how 2D collision in 3D Gamestudio works. Do i have to make a special layer with a special color or something to make the player realize that he won't be able to pass a wall for example?

I have really no idea how it works, hope you can help me, because i'd like to make a mini game in 2D

thanks in advance, as always.

greetz