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Monster known traps bit twiddling

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This commit is contained in:
Pasi Kallinen
2022-08-21 11:36:39 +03:00
parent 96e9534289
commit 953d43f5ac
10 changed files with 47 additions and 18 deletions
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src/mondata.c
+24
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@@ -1372,4 +1372,28 @@ resist_conflict(struct monst* mtmp)
return (rnd(20) > resist_chance);
}
/* does monster mtmp know traps of type ttyp */
boolean
mon_knows_traps(struct monst *mtmp, int ttyp)
{
if (ttyp == ALL_TRAPS)
return (boolean)(mtmp->mtrapseen);
else if (ttyp == NO_TRAP)
return !(boolean)(mtmp->mtrapseen);
else
return ((mtmp->mtrapseen & (1L << (ttyp - 1))) != 0);
}
/* monster mtmp learns all traps of type ttyp */
void
mon_learns_traps(struct monst *mtmp, int ttyp)
{
if (ttyp == ALL_TRAPS)
mtmp->mtrapseen = ~0L;
else if (ttyp == NO_TRAP)
mtmp->mtrapseen = 0L;
else
mtmp->mtrapseen |= (1L << (ttyp - 1));
}
/*mondata.c*/