keeping track of an object through a var, changing iconstat

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ID:267244

Jan 25 2003, 1:46 pm

Jon Snow

what I'm doing is when I create an object I store it in a mobs var like so:

mob/var/obj/fence
mob
verb
create()
var/obj/O=new /obj/fence(src.loc)
src.fence=O

then later on I try to change the icon_state...

mob/proc/change_icon_state()
src.fence.icon_state="stage2"

I get errors though, how would I go about doing this?

perhaps just giving the obj a variable and saying
for(var/obj/O in world)
if(O.changeiconstate==1)
O.icon_state="stage2"

would that be more efficient, and the only way to do it?

What are some other options?

Jan 25 2003, 2:09 pm
Garthor	What error are you getting?

Jan 25 2003, 2:14 pm In response to Garthor
Jon Snow	runtime error: Cannot modify null.icon_state. proc name: StartCombatSimulation (/mob/proc/StartCombatSimulation) source file: agameofkings.dm,189 usr: (/mob/pc/Snow) src: (/mob/pc/Snow) call stack: (/mob/pc/Snow): StartCombatSimulation(the infantry unit 1 (/mob/fire)) (/mob/pc/Snow): StartCombatSimulation(the infantry unit 1 (/mob/fire))

Jan 25 2003, 3:00 pm In response to Jon Snow
Garthor	That means O is null. Put in an if(O == null) check in there. And, after you assign it, put in a debugging message telling you what O's value is.