When my NPC's shoot at eachother 1 dies i get this runtime.

ID:146399
 
Jun 30 2005, 11:16 am
Code:
mob/Monster/Rebel
   icon = 'jedi2.dmi'
   icon_state = "stormtrooperanim"
   hp = 25
   Power = 15
   expgive = 7
   exp = 10
   def = 2
   str = 2
   armor = 0
   var/mob/player/P
   var/mob/Monster/StormtrooperB/E
   New()
      ..()
      spawn()
         Wander()
   proc/Wander()
      while(src)
         var/Found = FALSE
         for(P in oview(9,src))
            if(P.dark >= 1)
               step_towards(src,P)
               Found = TRUE
               missile(/obj/blasterfire,usr,P)
               walk(/obj/blasterfire,usr.dir)
               sleep(get_dist(usr,P))
               var/damage = pick(20)
               P.hp -= damage
               if(P.hp <= 0)
                  P.Death(P,src)
               sleep(10)
               src.Wander()
            else
               return
         for(E in oview(5,src))
            step_towards(src,E)
            Found = TRUE
            missile(/obj/blasterfire,usr,E)
            sleep(get_dist(usr,E))
            var/damage = pick(20)
            E.hp -= damage
            if(E.hp <= 0)  
               E.Death(E,src)
            sleep(10)
            src.Wander()
         if(Found != TRUE)
            step_rand(src)
            sleep(10)
         sleep(5)
  // Bump(mob/M)
      //if(istype(M,/mob/player))
         //missile(/obj/blasterfire,usr,P)
         //walk(/obj/blasterfire,usr.dir)
         //sleep(get_dist(usr,P))
         //var/damage = pick(20)
         //P.hp -= damage
         //P.Death(src)
         //sleep(10)
         //src.Wander()
      //if(istype(M,/mob/Monster))
         //missile(/obj/blasterfire,usr,E)
         //walk(/obj/blasterfire,usr.dir)
         //sleep(get_dist(usr,E))
         //var/damage = pick(20)
         //E.hp -= damage
         //E.Death(src)
         //sleep(10)
         //src.Wander()


Problem description: At the very beggining i get a login error: runtime error: Cannot read null.hp
proc name: Wander (/mob/Monster/StormtrooperB/proc/Wander)
usr: StormtrooperB (/mob/Monster/StormtrooperB)
src: StormtrooperB (/mob/Monster/StormtrooperB)
call stack:
StormtrooperB (/mob/Monster/StormtrooperB): Wander()
StormtrooperB (/mob/Monster/StormtrooperB): New(the grass (20,12,9) (/turf/grass))
: New()
runtime error: Cannot read null.hp
proc name: Wander (/mob/Monster/Rebel/proc/Wander)
usr: Rebel (/mob/Monster/Rebel)
src: Rebel (/mob/Monster/Rebel)
call stack:
Rebel (/mob/Monster/Rebel): Wander()
Rebel (/mob/Monster/Rebel): New(the grass (16,13,9) (/turf/grass))
: New()
runtime error: Cannot read null.hp
proc name: Wander (/mob/Monster/StormtrooperB/proc/Wander)
usr: StormtrooperB (/mob/Monster/StormtrooperB)
src: StormtrooperB (/mob/Monster/StormtrooperB)
call stack:
StormtrooperB (/mob/Monster/StormtrooperB): Wander()
StormtrooperB (/mob/Monster/StormtrooperB): New(the grass (20,13,9) (/turf/grass))
: New()
runtime error: Cannot read null.hp
proc name: Wander (/mob/Monster/Rebel/proc/Wander)
usr: Rebel (/mob/Monster/Rebel)
src: Rebel (/mob/Monster/Rebel)
call stack:
Rebel (/mob/Monster/Rebel): Wander()
Rebel (/mob/Monster/Rebel): New(the grass (16,11,9) (/turf/grass))
: New() yeah that huge long one and this code up there is the same for both mobs
I would like to know hy i'm getting that runtime error when i login and also why my Npcs stop moving after they kill something
------------------
Sorry this is my first game; I coded it from scratch
-------------------
Jun 30 2005, 12:45 pm (Edited on Jul 1 2005, 6:20 am)
Oh i forgot to say.
This also happens at later times. I beleive this error happens whenever one of the rebels or monsters die
-----------------------------
I FIXED IT
------------------------
Jun 30 2005, 7:00 pm
 
mob/Monster/Rebel
   icon = 'jedi2.dmi'
   icon_state = "stormtrooperanim"
   hp = 25
   Power = 15
   expgive = 7
   exp = 10
   def = 2
   str = 2
   armor = 0
   New()
      ..()
      spawn()
         Wander()
   proc/Wander()
      var/mob/player/P                   //*******
      var/mob/Monster/StormtrooperB/E    //*******
      var/found = FALSE                  //*******
      while(src)
         for(P in oview(9,src))
            if(P.dark >= 1)
               step_towards(src,P)
               Found = TRUE
               missile(/obj/blasterfire,usr,P)
               walk(/obj/blasterfire,usr.dir)
               sleep(get_dist(usr,P))
               var/damage = pick(20)
               P.hp -= damage
               if(P.hp <= 0)
                  P.Death(P,src)
               sleep(10)
               src.Wander()
            else
               return
         for(E in oview(5,src))
            step_towards(src,E)
            Found = TRUE
            missile(/obj/blasterfire,usr,E)
            sleep(get_dist(usr,E))
            var/damage = pick(20)
            E.hp -= damage
            if(E.hp <= 0)  
               E.Death(E,src)
            sleep(10)
            src.Wander()
         if(Found != TRUE)
            step_rand(src)
            sleep(10)
         sleep(5)
  // Bump(mob/M)
      //if(istype(M,/mob/player))
         //missile(/obj/blasterfire,usr,P)
         //walk(/obj/blasterfire,usr.dir)
         //sleep(get_dist(usr,P))
         //var/damage = pick(20)
         //P.hp -= damage
         //P.Death(src)
         //sleep(10)
         //src.Wander()
      //if(istype(M,/mob/Monster))
         //missile(/obj/blasterfire,usr,E)
         //walk(/obj/blasterfire,usr.dir)
         //sleep(get_dist(usr,E))
         //var/damage = pick(20)
         //E.hp -= damage
         //E.Death(src)
         //sleep(10)
         //src.Wander()


That should be the problem... You need to define your variables in the correct places.