02a48aa8cf
The consolidation of global variables from scattered source
files into decl.c and declared in decl.h was begun in 3.7.0.
Their placement in common files was done for centralized
initialization and potential re-initialization during a
"play again" scenario.
It wasn't really necessary for all of them to be housed in a
single huge structure to meet the "play again" requirement,
and the single huge structure has been a little unwieldy when
it comes to maintenance.
Following this commit, instead of one single extremely large structure
named 'g' to house all of the relocated global variables, they
are distributed into several ga through gz.
To make things easy for the developer, each variable is placed
into the struct corresponding to the starting letter of the variable.
That way, no lookup is required in order to know which struct houses
a particular variable, it is a simple match to the starting letter
for all the centralized global variables.
A global variable named 'amulets', would be found in ga.
ga.amulets
^ ^
A global varable named 'move', would be found in gm.
gm.moves
^ ^
A global variable named 'val_for_n_or_more' would be found in gv.
gv.val_for_n_or_more
^ ^
A global variable named 'youmonst' would be found in gy.
gy.youmonst
^ ^
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/* NetHack 3.7 vision.h $NHDT-Date: 1666478832 2022/10/22 22:47:12 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.15 $ */
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/* Copyright (c) Dean Luick, with acknowledgements to Dave Cohrs, 1990. */
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/* NetHack may be freely redistributed. See license for details. */
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#ifndef VISION_H
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#define VISION_H
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#define COULD_SEE 0x1 /* location could be seen, if it were lit */
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#define IN_SIGHT 0x2 /* location can be seen */
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#define TEMP_LIT 0x4 /* location is temporarily lit */
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/*
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* Light source sources
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*/
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#define LS_OBJECT 0
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#define LS_MONSTER 1
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/*
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* cansee() - Returns true if the hero can see the location.
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*
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* couldsee() - Returns true if the hero has a clear line of sight to
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* the location.
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*/
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#define cansee(x, y) ((gv.viz_array[y][x] & IN_SIGHT) != 0)
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#define couldsee(x, y) ((gv.viz_array[y][x] & COULD_SEE) != 0)
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#define templit(x, y) ((gv.viz_array[y][x] & TEMP_LIT) != 0)
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/*
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* The following assume the monster is not blind.
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*
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* m_cansee() - Returns true if the monster can see the given location.
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*
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* m_canseeu() - Returns true if the monster could see the hero. Assumes
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* that if the hero has a clear line of sight to the monster's
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* location and the hero is visible, then monster can see the
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* hero.
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*/
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#define m_cansee(mtmp, x2, y2) clear_path((mtmp)->mx, (mtmp)->my, (x2), (y2))
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#if 0
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#define m_canseeu(m) \
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((!Invis || perceives((m)->data)) \
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&& !(Underwater || u.uburied || (m)->mburied) \
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&& couldsee((m)->mx, (m)->my))
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#else /* without 'uburied' and 'mburied' */
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#define m_canseeu(m) \
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((!Invis || perceives((m)->data)) \
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&& !Underwater \
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&& couldsee((m)->mx, (m)->my))
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#endif
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/*
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* Circle information
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*/
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#define MAX_RADIUS 15 /* this is in points from the source */
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/* Use this macro to get a list of distances of the edges (see vision.c). */
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#define circle_ptr(z) (&circle_data[(int) circle_start[z]])
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/* howmonseen() bitmask values */
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#define MONSEEN_NORMAL 0x0001 /* normal vision */
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#define MONSEEN_SEEINVIS 0x0002 /* seeing invisible */
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#define MONSEEN_INFRAVIS 0x0004 /* via infravision */
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#define MONSEEN_TELEPAT 0x0008 /* via telepathy */
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#define MONSEEN_XRAYVIS 0x0010 /* via Xray vision */
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#define MONSEEN_DETECT 0x0020 /* via extended monster detection */
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#define MONSEEN_WARNMON 0x0040 /* via type-specific warning */
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#endif /* VISION_H */
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