runtime error: Cannot create objects of type null.

ID:2074536
 
Apr 23 2016, 7:04 pm
(See the best response by Ter13.)
Problem description:
Hello guys, my problem is that by killing an NPC I get this error.

Code:
runtime error: Cannot create objects of type null.
proc name: dropea (/mob/proc/dropea)
  source file: 1.6 Procs 3.dm,724
  usr: (src)
  src: Jety4 (/mob)
  src.loc: NaruterosV3 (332,239,1) (/turf/HIerba/dgrass)
  call stack:
Jety4 (/mob): dropea(Nidaime (/mob/enemy/Nidaime))
Nidaime (/mob/enemy/Nidaime): Death(Jety4 (/mob))
Jety4 (/mob): ataproc()
Jety4 (/mob): Atacar()


Code:
mob/proc/dropea(mob/M)
        var/ropa=""
        var/rand1=rand(1,17)
        if(rand1==1) ropa="Kankuorusuit"
        if(rand1==2) ropa="Shinigamitraje"
        if(rand1==3) ropa="trajedemadara"
        if(rand1==4) ropa="Zabuzasuit"
        if(rand1==5) ropa="Scroll_Doton1"
        if(rand1==6) ropa="Scroll_Fuuton1"
        if(rand1==7) ropa="Kankuorusuit"
        if(rand1==8) ropa="Shinigamitraje"
        if(rand1==9) ropa="trajedemadara"
        if(rand1==10) ropa="Zabuzasuit"
        if(rand1==11) ropa="Scroll_Rai1"
        if(rand1==12) ropa="Scroll_Katon1"
        if(rand1==13) ropa="RockLeesuit"
        if(rand1==14) ropa="Narutosuit"
        if(rand1==15) ropa="Neijisuit"
        if(rand1==16) ropa="Windmill"
        if(rand1==17) ropa="Trikunai"
        var/obj/O = "/obj/ropas/tienda/[ropa]"
        O=new O//this is the line 724 of code
        O.loc = M.loc
        O.xco = O.x;O.yco = O.y;O.zco = O.z//nuevo
        spawn(600)//nuevo
            if(O&&O.loc==locate(O.xco,O.yco,O.zco))del O//nuevo

Apr 23 2016, 7:23 pm
Best response
 
var/obj/O = text2path("/obj/ropas/tienda/[ropa]")
Apr 23 2016, 7:24 pm
The problem is that "/obj/ropas/tienda/[ropa]" is a string, not a typepath. Look up the text2path() proc in the reference (F1 in Dream Maker) and that should fix your problem.
Apr 23 2016, 7:35 pm
Thank you sou much Ter13 and Poisfizzy, vote for Ter13, firts response.
Apr 23 2016, 10:08 pm
Dude, get rid of that massive if chain..
var/list/all_ropa = list("Kankuorusuit","Shinigamitraje","trajedemadara","Zabuzasuit","Scroll_Doton1","Scroll_Fuuton1","Scroll_Rai1","Scroll_Katon1","RockLeesuit","Narutosuit","Neijisuit","Windmill","Trikunai")
var pick_ropa = pick(all_ropa)
var/obj/ropa = text2path("/obj/ropas/tienda/[pick_ropa]")
Apr 23 2016, 10:20 pm
In response to GreatPirateEra
Yeah, I should've remarked on that but I only paid attention the immediate issue.
Apr 24 2016, 8:54 am
this is the result:
mob/proc/dropea(mob/M)
    var/list/all_ropa = list("Kankuorusuit","Shinigamitraje","trajedemadara","Zabuzasuit","Scroll_Doton1","Scroll_Fuuton1","Scroll_Rai1","Scroll_Katon1","RockLeesuit","Narutosuit","Neijisuit","Windmill","Trikunai")
    var pick_ropa = pick(all_ropa)
    var/obj/ropa = text2path("/obj/ropas/tienda/[pick_ropa]")
    ropa=new ropa
    ropa.loc = M.loc
    ropa.xco = ropa.x;ropa.yco = ropa.y;ropa.zco = ropa.z
    spawn(600)//nuevo
        if(ropa&&ropa.loc==locate(ropa.xco,ropa.yco,ropa.zco))del ropa


thank you GreatPirateEra,ter13 and popisfizzy.