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 * navi.c: Navigate ships and such
30 * Known contributors to this file:
31 * Ken Stevens, 1995 (rewritten)
43 static int set_flagship(struct emp_qelem *list, struct shpstr **flagshipp);
44 static void switch_flagship(struct emp_qelem *list, int ship_uid);
49 struct nstr_item ni_ship;
50 struct emp_qelem ship_list;
51 double minmob, maxmob;
54 struct shpstr *shp = NULL; /* flagship */
63 char pathtaken[1024]; /* Doubtful we'll have a path longer than this */
68 if (!snxtitem(&ni_ship, EF_SHIP, player->argp[1]))
70 shp_sel(&ni_ship, &ship_list);
71 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
72 if (QEMPTY(&ship_list)) {
76 set_flagship(&ship_list, &shp);
77 if (player->argp[2]) {
78 strcpy(buf, player->argp[2]);
79 if (!(cp = shp_path(together, shp, buf)))
84 while (!QEMPTY(&ship_list)) {
87 if (cp == NULL || *cp == '\0' || stopping) {
89 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
90 if (QEMPTY(&ship_list)) {
91 pr("No ships left\n");
92 if (strlen(pathtaken) > 0) {
93 pathtaken[strlen(pathtaken) - 1] = '\0';
94 if (strlen(pathtaken) > 0)
95 pr("Path taken: %s\n", pathtaken);
99 if (set_flagship(&ship_list, &shp)) {
104 nav_map(shp->shp_x, shp->shp_y,
105 !(mchr[(int)shp->shp_type].m_flags & M_SUB));
108 sprintf(prompt, "<%.1f:%.1f: %s> ", maxmob,
109 minmob, xyas(shp->shp_x, shp->shp_y, player->cnum));
110 cp = getstring(prompt, buf);
111 /* Just in case any of our ships were shelled while we were
112 * at the prompt, we call shp_nav() again.
114 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
115 if (QEMPTY(&ship_list)) {
116 pr("No ships left\n");
117 if (strlen(pathtaken) > 0) {
118 pathtaken[strlen(pathtaken) - 1] = '\0';
119 if (strlen(pathtaken) > 0)
120 pr("Path taken: %s\n", pathtaken);
124 if (set_flagship(&ship_list, &shp)) {
128 if (cp && !(cp = shp_path(together, shp, buf)))
131 radmapnopr(shp->shp_x, shp->shp_y, (int)shp->shp_effic,
132 (int)techfact(shp->shp_tech,
133 mchr[(int)shp->shp_type].m_vrnge),
134 (mchr[(int)shp->shp_type].m_flags & M_SONAR)
135 ? techfact(shp->shp_tech, 1.0) : 0.0);
136 if (cp == NULL || *cp == '\0')
137 cp = &dirch[DIR_STOP];
138 dir = chkdir(*cp, DIR_STOP, DIR_VIEW);
141 shp_view(&ship_list);
143 stopping |= shp_nav_one_sector(&ship_list, dir, player->cnum, together);
152 ac = parse(cp, player->argp, NULL, scanspace, NULL);
154 sprintf(dp, "%d", shp->shp_uid);
155 player->argp[1] = dp;
160 switch (*player->argp[0]) {
167 unit_map(EF_SHIP, atoi(player->argp[1]), &ns, &origin);
168 draw_map(bmap_flag, origin, MAP_SHIP, &ns);
173 switch_flagship(&ship_list, -1);
175 switch_flagship(&ship_list, atoi(player->argp[1]));
176 set_flagship(&ship_list, &shp);
179 shp_list(&ship_list);
182 stopping |= shp_sweep(&ship_list, 1, 0, player->cnum);
200 player->argp[2] = player->argp[1];
201 sprintf(dp, "%d", shp->shp_uid);
202 player->argp[1] = dp;
209 direrr("`%c' to stop", ", `%c' to view, ", 0);
210 pr("`i' to list ships, `f' to change flagship,\n");
211 pr("`r' to radar, `s' to sonar, `l' to look, `M' to map, `B' to bmap,\n");
212 pr("`d' to drop mines, and `m' to minesweep\n");
216 if (strlen(pathtaken) > 0) {
217 pathtaken[strlen(pathtaken) - 1] = '\0';
218 if (strlen(pathtaken) > 0)
219 pr("Path taken: %s\n", pathtaken);
225 nav_map(int x, int y, int show_designations)
233 /* Note this is not re-entrant anyway, so we keep the buffers
235 static unsigned char *bitmap = NULL;
236 static char *wmapbuf = NULL;
237 static char **wmap = NULL;
241 wmapbuf = malloc(WORLD_Y * MAPWIDTH(1));
243 wmap = malloc(WORLD_Y * sizeof(*wmap));
244 if (wmap && wmapbuf) {
245 for (i = 0; i < WORLD_Y; i++)
246 wmap[i] = &wmapbuf[MAPWIDTH(1) * i];
253 bitmap = malloc((WORLD_X * WORLD_Y) / 8);
254 if (!wmapbuf || !wmap || !bitmap) {
255 pr("Memory error, tell the deity.\n");
256 logerror("malloc failed in navi\n");
259 memset(bitmap, 0, (WORLD_X * WORLD_Y) / 8);
260 snxtsct_dist(&ns, x, y, 1);
261 np = getnatp(player->cnum);
262 xyrelrange(np, &ns.range, &range);
263 blankfill(wmapbuf, &ns.range, 1);
264 while (nxtsct(&ns, §)) {
265 ptr = &wmap[ns.dy][ns.dx];
266 *ptr = dchr[sect.sct_type].d_mnem;
267 if (!show_designations &&
268 sect.sct_own != player->cnum &&
269 sect.sct_type != SCT_WATER &&
270 sect.sct_type != SCT_BSPAN && sect.sct_type != SCT_HARBR)
272 changed += map_set(player->cnum, sect.sct_x, sect.sct_y, *ptr, 0);
274 * We do it this way so that 'x' and 'X'
275 * bdesignations will show up. This can
276 * be used to mark mined sectors. So, the
277 * player will see the current des, UNLESS
278 * they've marked the sector 'x' or 'X',
279 * in which case they'll see that.
282 *ptr = player->bmap[sctoff(sect.sct_x, sect.sct_y)];
285 writemap(player->cnum);
286 for (i = 0; i < ns.range.height; i++)
292 set_flagship(struct emp_qelem *list, struct shpstr **flagshipp)
294 struct mlist *mlp = (struct mlist *)(list->q_back);
298 else if ((*flagshipp)->shp_uid != mlp->ship.shp_uid)
299 pr("Changing flagship to ");
302 *flagshipp = &mlp->ship;
303 pr("%s\n", prship(&mlp->ship));
308 switch_flagship(struct emp_qelem *list, int ship_uid)
310 struct emp_qelem *qp, *save;
316 save = qp = list->q_back;
319 emp_insque(qp, list);
321 mlp = (struct mlist *)qp;
322 if (mlp->ship.shp_uid == ship_uid || ship_uid == -1)
324 } while (list->q_back != save);