nethack-gwaa-kiwi/nethack
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cansee() and couldsee()

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cansee(), couldsee(), and templit() are macros which are described
as boolean and used as if boolean, but they've been using bit
masking to return integer values greater than 1.  That works since
C treats any non-zero as True but doesn't match boolean intent.
This commit is contained in:
PatR
2022-10-22 15:47:48 -07:00
parent b1f7a68636
commit f1e2c393f2
1 changed files with 4 additions and 4 deletions
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8
include/vision.h
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@@ -1,4 +1,4 @@
/* NetHack 3.7 vision.h $NHDT-Date: 1596498568 2020/08/03 23:49:28 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.13 $ */
/* NetHack 3.7 vision.h $NHDT-Date: 1666478832 2022/10/22 22:47:12 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.15 $ */
/* Copyright (c) Dean Luick, with acknowledgements to Dave Cohrs, 1990. */
/* NetHack may be freely redistributed. See license for details. */
@@ -21,9 +21,9 @@
* couldsee() - Returns true if the hero has a clear line of sight to
* the location.
*/
#define cansee(x, y) (g.viz_array[y][x] & IN_SIGHT)
#define couldsee(x, y) (g.viz_array[y][x] & COULD_SEE)
#define templit(x, y) (g.viz_array[y][x] & TEMP_LIT)
#define cansee(x, y) ((g.viz_array[y][x] & IN_SIGHT) != 0)
#define couldsee(x, y) ((g.viz_array[y][x] & COULD_SEE) != 0)
#define templit(x, y) ((g.viz_array[y][x] & TEMP_LIT) != 0)
/*
* The following assume the monster is not blind.