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is there a way to make a 2d image "click" on a 3d object

????????

for example, having a cursor and having a,lets say, a cube. is there any way to click on the cube and having a reaction?

Yes, it's called raycasting or linepicking, but the implementation and usage will depend on your 3d engine.

oh sry nvm im sposed to post this on Blitz3D....