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npc at spot

 
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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 2:34 pm    Post subject: npc at spot Reply with quote
what does npc at spot() return if there is no npc there
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Moogle1
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PostPosted: Mon Jun 09, 2008 2:50 pm    Post subject: Reply with quote
Pretty sure it's 0 (same thing as false).
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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 3:07 pm    Post subject: Reply with quote
Does that mean it works as the reference for the npc at 0 on the npc editor
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Moogle1
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PostPosted: Mon Jun 09, 2008 3:12 pm    Post subject: Reply with quote
You don't need to know this, but all references are negative numbers. If you use a positive number or 0, the engine interprets it as an npc ID (not a reference) and uses the first copy of that NPC it can find. So if I wrote this script:

Code:
walk npc (npc at spot(5, 5), right, 2)


and there was no NPC at (5,5), then some copy of NPC 0 on the map would walk right two spaces. This would be the correct way to do it:

Code:
if (npc at spot(5,5)) then (walk npc (npc at spot(5, 5), right, 2))

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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 3:53 pm    Post subject: Reply with quote
Thanks, good to know...

Knowing that I now have no idea what might be wrong with this script.

This script is my attempt to "trick" the npc limit of 32 in that I am trying
to make lots of copy's of one npc say different stuff. It is supposed to
check the squares around the hero for a npc and then show a text box
depending on its X and Y location. It is set to run when you use the npc.

Code:

#These plotscritps will control what diffrent characters say when they talk to them

#sages!

plotscript, sagefind, begin

variable(sage)

suspend player

if (npc at spot((hero x(me) -- 1), hero y(me))) then(sage := npc at spot ((hero x(me) -- 1), hero y(me)))
   else (if (npc at spot((hero x(me) + 1), hero y(me))) then(sage := npc at spot ((hero x(me) + 1), hero y(me)))
      else (if (npc at spot(hero x(me), (hero y(me) -- 1))) then(sage := npc at spot(hero x(me), (hero y(me) -- 1)))
         else(if (npc at spot(hero x(me), (hero y(me) + 1))) then(sage := npc at spot(hero x(me), (hero y(me) + 1)))
         )
      )
   )

resume player
sagesay(npc x(sage), npc y(sage))

end

plotscript, sagesay, sx=0, sy=0, begin

   if(sx == 18, and, sy == 12) then (
      show text box(21)
   ) #end of then
   
   if(sx == 13, and, sy == 12) then (
      show text box(21)
   ) #end of then

   if(sx == 12, and, sy == 9) then (
      show text box(21)
   ) #end of then

   if(sx == 12, and, sy == 8) then (
      show text box(21)
   ) #end of then

   if(sx == 14, and, sy == 7) then (
      show text box(21)
   ) #end of then

   if(sx == 18, and, sy == 7) then (
      show text box(21)
   ) #end of then

   if(sx == 20, and, sy == 8) then (
      show text box(21)
   ) #end of then

   if(sx == 20, and, sy == 10) then (
      show text box(21)
   ) #end of then
   else(show value(sx, and, sy), wait(5), show no value)
end


* they all say the same thing because I haven't gotten around to writing
individual things for them to say
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Moogle1
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PostPosted: Mon Jun 09, 2008 4:09 pm    Post subject: Reply with quote
What actually happens when you run it? Try adding the line show value(sage) into your sagefind script.

Also, the NPC limit is 36 (0-35). I doubt this makes a difference as far as your script is concerned.

More to the point, though, there's an easier way of doing this. Try this:

Code:
plotscript, sagefind, begin
 variable(sx, sy)
 sx := hero x
 sy := hero y
 if (hero direction == west) then (sx -=1)
 if (hero direction == east) then (sx += 1)
 if (hero direction == south) then (sy += 1)
 if (hero direction == north) then (sy -= 1)
 sagesay(sx, sy)
end


Of course, this assumes the player is facing the NPC he's talking to.
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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 4:35 pm    Post subject: Reply with quote
I did as you said and it is now a lot easier to read, but I am getting the
same results. (by the way the showvalue at the end of sagesay prints out
0, I am not sure exactly why)

I must of got 32 from 32767
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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 6:32 pm    Post subject: Reply with quote
(sorry about posting twice, for some reason I can't edit)

changed the code a little to show variables better
sx is always 0
sy is always the npc reference (i.e. -6)
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Moogle1
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PostPosted: Mon Jun 09, 2008 7:12 pm    Post subject: Reply with quote
Your NPCs are calling sagesay instead of sagefind, I bet.
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Smeargle




Joined: 09 Jun 2008
Posts: 25
PostPosted: Mon Jun 09, 2008 7:29 pm    Post subject: Reply with quote
your right.... my bad

thanks though
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TMC
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PostPosted: Thu Jun 12, 2008 5:36 am    Post subject: Reply with quote
Code:
   if(sx == 20, and, sy == 10) then (
      show text box(21)
   ) #end of then
   else(show value(sx, and, sy), wait(5), show no value)


This else block is attached to the last if. If you want something to happen if none of the if's match, the easiest way to do that would probably be to put an exit script in each if.

I'm afraid you can't show two numbers at once so easily. and does a bitwise and on two numbers. Just show them separately, or create and show a string.

BTW, there's an even easier way to write sagefind (or call sagesay directly):
Code:
plotscript, sagefind, dummy arg, npcref, begin
 sagesay(npc x(npcref), npc y(npcref))
end

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