1/*	SCCS Id: @(#)region.h	3.4	2002/10/15	*/
2/* Copyright (c) 1996 by Jean-Christophe Collet			  */
3/* NetHack may be freely redistributed.  See license for details. */
4
5#ifndef REGION_H
6#define REGION_H
7
8/* generic callback function */
9
10typedef boolean FDECL((*callback_proc), (genericptr_t, genericptr_t));
11
12/*
13 * Overload the old player_inside field with two values, coded in such
14 * a way as to retain compatibility with 3.4.0 save and bones files;
15 * this relies on the fact that nethack's `boolean' is really stored
16 * in a `char' (or bigger type) rather than in a single bit.
17 *
18 * 3.4.1 save and bones files will be correct.
19 * 3.4.0 save files restored under 3.4.1 will be correct.
20 * 3.4.0 bones files used with 3.4.1 will continue to have the minor
21 *	 3.4.0 bug of falsely claiming that the current game's hero is
22 *	 responsible for the dead former hero's stinking clouds.
23 */
24#define REG_HERO_INSIDE	1
25#define REG_NOT_HEROS	2
26#define hero_inside(r)	((unsigned)(r)->player_flags & REG_HERO_INSIDE)
27#define heros_fault(r)	(!((unsigned)(r)->player_flags & REG_NOT_HEROS))
28#define set_hero_inside(r)	((r)->player_flags |= REG_HERO_INSIDE)
29#define clear_hero_inside(r)	((r)->player_flags &= ~REG_HERO_INSIDE)
30#define set_heros_fault(r)	((r)->player_flags &= ~REG_NOT_HEROS)
31#define clear_heros_fault(r)	((r)->player_flags |= REG_NOT_HEROS)
32
33typedef struct {
34  NhRect bounding_box;		/* Bounding box of the region */
35  NhRect *rects;		/* Rectangles composing the region */
36  short  nrects;		/* Number of rectangles  */
37  boolean attach_2_u;		/* Region attached to player ? */
38  unsigned int attach_2_m;	/* Region attached to monster ? */
39  /*struct obj *attach_2_o;*/	/* Region attached to object ? UNUSED YET */
40  const char* enter_msg;	/* Message when entering */
41  const char* leave_msg;	/* Message when leaving */
42  short  ttl;			/* Time to live. -1 is forever */
43  short expire_f;		/* Function to call when region's ttl expire */
44  short can_enter_f;		/* Function to call to check wether the player
45				   can, or can not, enter the region */
46  short enter_f;		/* Function to call when the player enters*/
47  short can_leave_f;		/* Function to call to check wether the player
48				   can, or can not, leave the region */
49  short leave_f;		/* Function to call when the player leaves */
50  short inside_f;		/* Function to call every turn if player's
51				   inside */
52  boolean player_flags;	/* (see above) */
53  unsigned int* monsters;	/* Monsters currently inside this region */
54  short n_monst;		/* Number of monsters inside this region */
55  short max_monst;		/* Maximum number of monsters that can be
56				   listed without having to grow the array */
57#define MONST_INC	5
58
59  /* Should probably do the same thing about objects */
60
61  boolean visible;		/* Is the region visible ? */
62  int glyph;			/* Which glyph to use if visible */
63  genericptr_t arg;		/* Optional user argument (Ex: strength of
64				   force field, damage of a fire zone, ...*/
65} NhRegion;
66
67#endif /* REGION_H */
68