Blitzmax has collision layers. You can put your menu/gui on one layer, minimap on another layer, game stuff on another, and so on.
I'll be the first to admit that Blitzmax's collision system takes a little getting used to, and I'd also recommend reading this, as it explains everything you need.
I'll be the first to admit that Blitzmax's collision system takes a little getting used to, and I'd also recommend reading this, as it explains everything you need.