2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future projects/authors will amend these files as needed.
28 * path.h: Definitions for directions, paths, etc.
30 * Known contributors to this file:
41 /* direction indices */
54 extern signed char dirindex['z'-'a'+1];
55 extern int diroff[DIR_MAP+1][2];
56 extern char dirch[DIR_MAP+2];
57 extern char *routech[DIR_LAST+1][2];
59 /* src/lib/subs/paths.c */
60 extern char *getpath(char *, char *, coord, coord, int, int, int);
61 extern double fcost(struct sctstr *, natid);
62 extern double ncost(struct sctstr *, natid);
63 extern double pathtoxy(s_char *, coord *, coord *,
64 double (*)(struct sctstr * sp, natid own));
65 extern int chkdir(s_char, int, int);
66 extern int diridx(char);
67 extern void direrr(s_char *, s_char *, s_char *);
68 extern void pathrange(register coord, register coord, register s_char *,
71 extern double sector_mcost(struct sctstr *sp, int do_bonus);
73 #define P_NONE 0 /* NO destinations allowed */
74 #define P_WALKING 1 /* use BestLandPath, only owned */
75 #define P_FLYING 2 /* use bestpath, any */
76 #define P_SAILING 3 /* use bestpath, any */
78 #define MAX_PATH_LEN 1024