Manual:DIL Manual visible() - Seifert69/DikuMUD3 GitHub Wiki

integer visible(u1 : unitptr, u2 : unitptr)
   u1: The character who is looking at u2
   u2: The unit which the character u1 is trying to see.
   return: TRUE if u1 can see u2, FALSE otherwise.
   Example: if (visible(self, victim)) ...

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