2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * path.c: Show empire distribution paths
29 * Known contributors to this file:
30 * David Muir Sharnoff, 1986
31 * (unknown rewrite), 1989
32 * Markus Armbruster, 2005-2011
48 struct range absrange;
49 struct range relrange;
56 /* Note this is not re-entrant anyway, so we keep the buffers
58 static char *mapbuf = NULL;
59 static char **map = NULL;
62 if (!(p = getstarg(player->argp[1], "from sector : ", buf)) ||
63 !sarg_xy(p, &cx, &cy) || !getsect(cx, cy, §))
65 if ((sect.sct_own != player->cnum) && !player->god) {
69 if (path_find(sect.sct_x, sect.sct_y, sect.sct_dist_x, sect.sct_dist_y,
70 player->cnum, MOB_MOVE) < 0) {
71 pr("No path possible from %s to distribution sector %s\n",
72 xyas(sect.sct_x, sect.sct_y, player->cnum),
73 xyas(sect.sct_dist_x, sect.sct_dist_y, player->cnum));
76 len = path_find_route(buf, sizeof(buf), sect.sct_x, sect.sct_y,
77 sect.sct_dist_x, sect.sct_dist_y);
78 if (len >= sizeof(buf)) {
79 pr("Can't handle path from %s to distribution sector %s, it's too long, sorry.\n",
80 xyas(sect.sct_x, sect.sct_y, player->cnum),
81 xyas(sect.sct_dist_x, sect.sct_dist_y, player->cnum));
85 mapbuf = malloc(WORLD_Y * MAPWIDTH(3));
87 map = malloc(WORLD_Y * sizeof(char *));
89 for (i = 0; i < WORLD_Y; i++)
90 map[i] = &mapbuf[MAPWIDTH(3) * i];
96 if (!mapbuf || !map) {
97 pr("Memory error, tell the deity.\n");
98 logerror("malloc failed in path\n");
101 pathrange(cx, cy, buf, 1, &absrange);
102 snxtsct_area(&ns, &absrange);
103 natp = getnatp(player->cnum);
104 xyrelrange(natp, &absrange, &relrange);
105 blankfill(mapbuf, &ns.range, 3);
106 for (pp = buf; *pp; ++pp) {
108 if (CANT_HAPPEN(i == DIR_STOP))
110 memcpy(&map[delty(&ns.range, cy)][deltx(&ns.range, cx) * 2],
112 cx = xnorm(cx + diroff[i][0]);
113 cy = ynorm(cy + diroff[i][1]);
115 border(&relrange, " ", " ");
116 while (nxtsct(&ns, §)) {
119 map[ns.dy][ns.dx * 2 + 1] = dchr[sect.sct_type].d_mnem;
121 for (y = ns.range.ly, i = 0; i < ns.range.height; y++, i++) {
123 pr("%4d %s %-4d\n", cy, map[i], cy);
127 border(&relrange, " ", " ");