Set var to null when mob is no longer visible

ID:1725123
 
Nov 22 2014, 11:51 am (Edited on Nov 22 2014, 12:45 pm)
Is it possible to do what is in the title? My code works fine until the target is behind something opaque, and it becomes possible to attack it even when it's invisible.
fireball()
            for(var/mob/enemy/Z in oview())
                target = Z

            if(target)
                var/obj/weapon/arrow/I = new /obj/weapon/arrow(loc=usr.loc,dir=usr.dir)
                walk_to(I,target,0,8)
                spawn(100) del(I)
                u
                if(I.loc == target:loc)
                    del(I)
                    damage = rand(3,6)
                    target:HP -= damage
                       if(target:HP <= 0)
                        world<<"<b><SPAN STYLE='color: red'>[target] dies!</SPAN></b>"
                        var/obj/gold/G = new(target:loc)
                        G.amount = rand(1,30)
                        del(target)
                else
                    sleep(5)
                    goto u


BTW, what can I use for detecting collisions with walls, when I can't set density to 1?
Nov 22 2014, 5:34 pm
Cross would probably work with denseless objects. I suggest you also add a break in that for loop.
Nov 22 2014, 10:25 pm
OK, I fixed it by adding
 
if(target)
    target = null

and stopped them going through walls using Move().