A simple question about overlays

ID:174103
 
Sep 30 2003, 9:23 pm
ok lets say Im using a variable to store an obj. That variable is then used to add an overlay to the player. But the variable CAN = null. My question is what EXACTLY does it do when you try to add a null overlay? For instance var/TestObj = null then you use that for an overlay: usr.overlays += usr.TestObj see TestObj = null so basically its saying usr.overlays += null what EXACT does this do? Does it just return and do nothing? Does it add a blank overlay? What?
Sep 30 2003, 9:51 pm
Aridale wrote:
ok lets say Im using a variable to store an obj. That variable is then used to add an overlay to the player. But the variable CAN = null. My question is what EXACTLY does it do when you try to add a null overlay? For instance var/TestObj = null then you use that for an overlay: usr.overlays += usr.TestObj see TestObj = null so basically its saying usr.overlays += null what EXACT does this do? Does it just return and do nothing? Does it add a blank overlay? What?

I'm not sure if it returns nothing or adds a blank overlay, but why don't you just do this?
if(src.TestObj) src.overlays+=src.TestObj


That should take care of it.

~>Volte
Sep 30 2003, 9:52 pm
In response to Volte
thats actually why I was wonderin Volte was to know if I NEED to add those checks or not.
Sep 30 2003, 10:42 pm
In response to Aridale
What's the problem with doing the checks? It'd make sure nothing weird happened with the overlays, and it's not like it'd slow it down much.