undefined var in Developer Help

ID:140956
 
Jul 24 2009, 8:45 am
Code:
obj/spell
    density = 1
    var
        delay = 2
        length=20
        dmg=0
        splash
        mob/owner

    New(_loc,mob/_owner)
        if(_owner)
            src.dir = _owner.dir
            if(!src.loc) src.loc = get_step(_owner,_owner.dir)
            src.owner = _owner
    Move()
        src.length--
        if(!src.length) del src
        return ..()
    Bump(mob/O)
        if(ismob(O))
            var/damage = src.dmg
            view(src) << "[src.owner] attacks [O] for [damage] damage!!"
            O.hp -= damage
            O.deathcheck()
            del src
            viewers(O) << "[src.owner] has hit [O:name] with \his [src]!"
        else if(isobj(O))
            if(hard == 0)
                del O

        del src
    Fireball
        icon = 'fireball.dmi'
        delay = 2
        length = 10
        dmg = 2 + usr.fire




mob
    var
        haton = 0
        weaponon = 0
        cheston = 0
        legson = 0
        capeon = 0
        defense = 0
        mana = 100
        maxmana = 100
        list/spells=list()
        hp = 100
        maxhp = 100
        fire = 0
        Bookread = 0
        water = 0
        cooldown = 0


Problem description:

im trying to make so different spells' damage increase when you increase certain magic skill, spell's damage also increase(that means fire skill increase fire spells' damage, water skill increase water spells damage... fire skill is called fire), so im trying to make spell dmg equal to it's min damage + it's owner's skill, but i get undefined var error. also if some will say no ... in ..., then say what i should use
#1 Jul 24 2009, 9:08 am
 
    Fireball
        icon = 'fireball.dmi'
        delay = 2
        length = 10
        dmg = 2 /*+ usr.fire*/ // wtf <.<

There is no usr at compile time, so that's just silly, you need to use a constant var. Add the owner's "fire" var to the Fireball's dmg when the obj is created:
    New(_loc,mob/_owner)
        if(_owner)
            src.dir = _owner.dir
            if(!src.loc) src.loc = get_step(_owner,_owner.dir)
            src.owner = _owner
            src.dmg += _owner.fire
#2 Jul 24 2009, 9:45 am
In response to Ruben7 (#1)
well, now every spell will use fire skill(if fire skill is 10, then fireball will do 10 damage, fire blast will do 10 damage, water attacks will do 10 damage), but im trying to do different spells do different damage, not just use spell with your favorite icon
#3 Jul 24 2009, 9:50 am
In response to Martys1103 (#2)
 
Fireball
        icon = 'fireball.dmi'
        delay = 2
        length = 10
        dmg = 2
        New(_loc,mob/_owner)
                ..()
                if(_owner)
                    src.dmg += _owner.fire

Override New() for each spell and add the right var or whatever.
#4 Jul 24 2009, 11:29 am
In response to Ruben7 (#3)
oh really, i can rewrite it and add element var(if(element==1(fire)) src.dmg+=_owner.fire). thanks for help