Drawing an image has nothing to do with collision nor does it actually affect it at all.
CollideImage and CollideRect are the only 2 commands affecting layer 0 to 31. 32 is for ImageCollide (2) which is the "old way" how blitz3d / blitzplus did it. But it is only suitable for very few cases if you have more complex scenarios, the usage of layers is much more performant.
CollideImage and CollideRect are the only 2 commands affecting layer 0 to 31. 32 is for ImageCollide (2) which is the "old way" how blitz3d / blitzplus did it. But it is only suitable for very few cases if you have more complex scenarios, the usage of layers is much more performant.