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☖ Forums → Cog Forum → Looking 360 degrees?
Looking 360 degrees?
2004-12-09, 5:20 PM #1
What's the best and quickest method for finding everything within x-radius, 360 degrees around a target thing?
</sarcasm>
<Anovis> mmmm I wanna lick your wet, Mentis.
__________
2004-12-09, 6:34 PM #2
I've never done thoughrough testing on this code to make sure it catches everything within 360 degrees, but there's no reason it shouldn't work.

Code: 
   victim = FirstThingInView(player, 180, 10, 0x404);
   while(victim != -1)
   {
      if(
         HasLOS(player, victim) &&
         (victim != player) &&
         (VectorDist(GetThingPos(player), GetThingPos(potential)) <= 1) &&
         !(GetThingFlags(victim) & 0x200) &&
         !(GetActorFlags(victim) & 0x100) &&
         !((jkGetFlags(victim) & 0x20) && !IsInvActivated(player, 23))
        )
      {
          // Do Stuff To Victim Or Record Victim For Later Use
      }
      victim = NextThingInView();
   }
   SetThingLook(player, VectorScale(GetThingLVec(player), -1));
   victim = FirstThingInView(player, 180, 10, 0x404);
   while(victim != -1)
   {
      if(
         HasLOS(player, victim) &&
         (victim != player) &&
         (VectorDist(GetThingPos(player), GetThingPos(potential)) <= 1) &&
         !(GetThingFlags(victim) & 0x200) &&
         !(GetActorFlags(victim) & 0x100) &&
         !((jkGetFlags(victim) & 0x20) && !IsInvActivated(player, 23))
        )
      {
          // Do Stuff To Victim Or Record Victim For Later Use
      }
      victim = NextThingInView();
   }
   SetThingLook(player, VectorScale(GetThingLVec(player), -1));


Another way to do it would be something as follows, but I've never even checked the syntax for correctness with the following code
Code: 
   for(x=0; x<GetSectorCount(); x=x+1)
   {
      for(y=FirstThingInSector(x), z=0; z<GetSectorThingCount(x); y=NextThingInSector(y), z=z+1)
      {
         if((GetThingType(y) == DesiredType) &&
         (y != player) &&
         (HasLOS(player, y) &&
         (VectorDist(GetThingPos(player), GetThingPos(y)) <= 1))
         {
            // Do Stuff To y Or Record y For Later Use
         }
      }
   }


Quote:
360 degrees around a target thing?

If you want 360 degrees around something besides the player, replace the word player with whatever the thing is you want to use.

QM

Edit: forgot HasLOS
2004-12-11, 6:28 AM #3
Quib: Does that produce any noticeable 'flicker' as the player is turned around?

Also, if you are using MotS, the bubble verbs and the sendmessageradius() verb work well here.
-El Scorcho

"Its dodgeball time!" -Stormy Waters
2004-12-11, 12:08 PM #4
^^ If it does you could fire a ghost instead, look, then destroy.
May the mass times acceleration be with you.
2004-12-11, 6:18 PM #5
I tried the first bit of code, and it doesn't 100% work all the time but it's good enough. Thanks
</sarcasm>
<Anovis> mmmm I wanna lick your wet, Mentis.
__________

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