Whats so wrong with this?

ID:145465
 
Mar 15 2006, 10:39 am
Code: Eat proc. Nice and simple.
obj
    var
        fatt = 8
        fill = 1
        Food

        verb
            Give_to(mob/M)
                if(M.fishtype)
                    usr << "You give [M] a [src]."
                    src.loc = M.loc
                    M.Eat(src)
                else
                    usr << "[M] is not a fish!" 
mob
    proc
        Eat(mob/Fish/M,obj/Food/F)
            if(F.fatt >= 1)
                M.fat += F.fill 
                F.fatt -= 1
                M.hunger -= F.fatt
                if(M.hunger <= 0)
                    M.hunger = 0
                    return
                sleep(4)
                Eat(M)
            else
                del(src)


Problem description:

runtime error: Cannot read null.fatt
proc name: Eat (/mob/proc/Eat)
usr: RedlineM203 (/mob/Player)
src: Redline (/mob/Fish/)
call stack:
Redline (/mob/Fish/): Eat(Shark (/obj/Food/Shark), null)
Shark (/obj/Food/Shark): Give to(Redline (/mob/Fish/))

I'm stumped.

Mar 15 2006, 11:06 am
The problem is your Eat proc is twisted up a bit. When you call the proc, you call it with M.Eat(src), which is only supplying one argument through to Eat(). In your Eat proc, it has 2 arguments to watch for, mob/Fish/M and obj/food/F.

The proc you made is a mob proc, so the fish should be the one running the proc. You got that right, with M.Eat(src).

But then in your Eat() proc, its looking for mob/Fish/M and obj/food/F, but all it's getting is the food in place of M. Understand?

Technically, you don't need mob/Fish/M at all, since the fish is running the proc, it makes the fish src. So it would look something like this:
mob/proc/Eat(obj/Food/F)
    if(F.fatt >=1)
        src.fat+=F.fill
        //etc, etc


Hope that helps.
Mar 15 2006, 3:26 pm
In response to Detnom
Hey detnom, it's been awhile.