How do you make or do overlaps?

[QuWack-fan-Duck]

how can you create or do overlaps to make something happen

[tabreturn]

Like, Collision Detection?

[Chrisir]

Your question is a bit generic.

Can you post your code and ask a more specific question?

An overlap appears when you draw two items
close to each other and you use a fill color with a weak
fill, eg. fill(0,255,0, 25);