[quote:1cmp8bho]yes
and if thats like you said better add condition to collisions script
for example like i said
if object A (player) is on collisions with object B (ennemy)
and if object B is on screen
this will tel to construct engine to calculate colissions only if object B is on screen
??? am i logic ?
I would still say no, I don't see any evidence that it should matter in regards to collision checks. As you can test it pretty easy. Make 2 sprites and put them on the layout.
In the code you write "On collision object 1 with object 2" that would give you 60 collisions checks, if you move one of the objects out of the layout you get 0 collision checks. So to check if its on layout doesn't matter.