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__MIXEDSYNTAXHIGHLIGHT__
Below is the full text to '''vision.h''' from the [[NetHack 3.6.1 source code|source code]] of [[NetHack 3.6.1]]. To link to a particular line, write [[Source:NetHack 3.6.1/include/vision.h#line123|<nowiki>[[Source:NetHack 3.6.1/include/vision.h#line123]]</nowiki>]], for example.

{{NGPL}}
1. /* NetHack 3.6 vision.h $NHDT-Date: 1432512777 2015/05/25 00:12:57 $ $NHDT-Branch: master $:$NHDT-Revision: 1.9 $ */
2. /* Copyright (c) Dean Luick, with acknowledgements to Dave Cohrs, 1990. */
3. /* NetHack may be freely redistributed. See license for details. */
4. 
5. #ifndef VISION_H
6. #define VISION_H
7. 
8. #if 0 /* (moved to decl.h) */
9. extern boolean vision_full_recalc; /* TRUE if need vision recalc */
10. extern char **viz_array; /* could see/in sight row pointers */
11. extern char *viz_rmin; /* min could see indices */
12. extern char *viz_rmax; /* max could see indices */
13. #endif
14. #define COULD_SEE 0x1 /* location could be seen, if it were lit */
15. #define IN_SIGHT 0x2 /* location can be seen */
16. #define TEMP_LIT 0x4 /* location is temporarily lit */
17. 
18. /*
19. * Light source sources
20. */
21. #define LS_OBJECT 0
22. #define LS_MONSTER 1
23. 
24. /*
25. * cansee() - Returns true if the hero can see the location.
26. *
27. * couldsee() - Returns true if the hero has a clear line of sight to
28. * the location.
29. */
30. #define cansee(x, y) (viz_array[y][x] & IN_SIGHT)
31. #define couldsee(x, y) (viz_array[y][x] & COULD_SEE)
32. #define templit(x, y) (viz_array[y][x] & TEMP_LIT)
33. 
34. /*
35. * The following assume the monster is not blind.
36. *
37. * m_cansee() - Returns true if the monster can see the given location.
38. *
39. * m_canseeu() - Returns true if the monster could see the hero. Assumes
40. * that if the hero has a clear line of sight to the monster's
41. * location and the hero is visible, then monster can see the
42. * hero.
43. */
44. #define m_cansee(mtmp, x2, y2) clear_path((mtmp)->mx, (mtmp)->my, (x2), (y2))
45. 
46. #define m_canseeu(m) \
47. ((!Invis || perceives((m)->data)) \
48. && !(Underwater || u.uburied || (m)->mburied) \
49. ? couldsee((m)->mx, (m)->my) \
50. : 0)
51. 
52. /*
53. * Circle information
54. */
55. #define MAX_RADIUS 15 /* this is in points from the source */
56. 
57. /* Use this macro to get a list of distances of the edges (see vision.c). */
58. #define circle_ptr(z) (&circle_data[(int) circle_start[z]])
59. 
60. /* howmonseen() bitmask values */
61. #define MONSEEN_NORMAL 0x0001 /* normal vision */
62. #define MONSEEN_SEEINVIS 0x0002 /* seeing invisible */
63. #define MONSEEN_INFRAVIS 0x0004 /* via infravision */
64. #define MONSEEN_TELEPAT 0x0008 /* via telepathy */
65. #define MONSEEN_XRAYVIS 0x0010 /* via Xray vision */
66. #define MONSEEN_DETECT 0x0020 /* via extended monster detection */
67. #define MONSEEN_WARNMON 0x0040 /* via type-specific warning */
68. 
69. #endif /* VISION_H */
[[Category:NetHack 3.6.1 source code|include/vision.h]]

Source:NetHack 3.6.1/include/vision.h - Revision history

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