2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2000, 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 the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * 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)
51 static int set_flagship(struct emp_qelem *list, struct shpstr **flagshipp);
56 struct nstr_item ni_ship;
57 struct emp_qelem ship_list;
58 double minmob, maxmob;
61 struct shpstr *shp = 0; /* flagship */
69 s_char pathtaken[1024]; /* Doubtful we'll have a path longer than this */
70 s_char *pt = pathtaken;
72 if (!snxtitem(&ni_ship, EF_SHIP, player->argp[1]))
74 shp_sel(&ni_ship, &ship_list);
75 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
76 player->condarg = 0; /* conditions don't apply to nav_map() */
77 if (QEMPTY(&ship_list)) {
81 set_flagship(&ship_list, &shp);
82 if (player->argp[2]) {
83 strcpy(buf, player->argp[2]);
84 if (!(cp = shp_path(together, shp, buf)))
89 while (!QEMPTY(&ship_list)) {
92 if (cp == 0 || *cp == '\0' || stopping) {
94 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
95 if (QEMPTY(&ship_list)) {
96 pr("No ships left\n");
97 if (strlen(pathtaken) > 0) {
98 pathtaken[strlen(pathtaken)-1] = '\0';
99 if (strlen(pathtaken) > 0)
100 pr("Path taken: %s\n", pathtaken);
104 if (set_flagship(&ship_list, &shp)) {
109 nav_map(shp->shp_x, shp->shp_y,
110 !(mchr[(int)shp->shp_type].m_flags&M_SUB));
113 sprintf(prompt, "<%.1f:%.1f: %s> ", maxmob,
114 minmob, xyas(shp->shp_x, shp->shp_y, player->cnum));
115 cp = getstring(prompt, buf);
116 /* Just in case any of our ships were shelled while we were at the
117 * prompt, we call shp_nav() again.
119 shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
120 if (QEMPTY(&ship_list)) {
121 pr("No ships left\n");
122 if (strlen(pathtaken) > 0) {
123 pathtaken[strlen(pathtaken)-1] = '\0';
124 if (strlen(pathtaken) > 0)
125 pr("Path taken: %s\n", pathtaken);
129 if (set_flagship(&ship_list, &shp)) {
134 radmapnopr(shp->shp_x, shp->shp_y, (int)shp->shp_effic,
135 (int)techfact(shp->shp_tech,
136 (double)mchr[(int)shp->shp_type].m_vrnge),
137 (double)((mchr[(int)shp->shp_type].m_flags
139 ? techfact(shp->shp_tech, 1.0) : 0.0));
140 if (cp == 0 || *cp == '\0')
141 cp = &dirch[DIR_STOP];
149 unit_map(EF_SHIP, shp->shp_uid, &ns, &origin);
150 draw_map(0, origin, MAP_SHIP, &ns, player->cnum);
152 } else if (cp[-1] == 'B') {
153 unit_map(EF_SHIP, shp->shp_uid, &ns, &origin);
154 draw_map(EF_BMAP, origin, MAP_SHIP, &ns, player->cnum);
156 } else if (cp[-1] == 'f') {
157 struct emp_qelem *qp;
158 qp = ship_list.q_back;
159 emp_remque(ship_list.q_back);
160 emp_insque(qp, &ship_list);
161 set_flagship(&ship_list, &shp);
162 } else if (cp[-1] == 'i') {
163 shp_list(&ship_list);
165 stopping |= shp_sweep(&ship_list, 1, player->cnum);
168 } else if (*cp == 'r' ||
172 while((*bp != ' ') && (*bp)) bp++;
173 while((*bp == ' ') && (*bp)) bp++;
174 if ((bp != (s_char *)0) && (*bp))
175 player->argp[1] = bp;
177 sprintf(dp,"%d",shp->shp_uid);
178 player->argp[1] = dp;
183 } else if (cp[-1] == 'l')
194 dir = chkdir(*cp++, DIR_STOP, DIR_VIEW);
196 if (NULL != (cp = shp_path(together, shp, buf)))
198 direrr("`%c' to stop", ", `%c' to view, ", 0);
199 pr("`i' to list ships, `f' to change flagship,\n");
200 pr("`r' to radar, `s' to sonar, `l' to look, `M' to map, `B' to bmap,\n");
201 pr("and `m' to minesweep\n");
204 } else if (dir == DIR_VIEW) {
205 shp_view(&ship_list);
209 stopping |= shp_nav_one_sector(&ship_list, dir, player->cnum, together);
215 if (strlen(pathtaken) > 0) {
216 pathtaken[strlen(pathtaken)-1] = '\0';
217 if (strlen(pathtaken) > 0)
218 pr("Path taken: %s\n", pathtaken);
224 nav_map(int x, int y, int show_designations)
226 register s_char *ptr;
232 /* Note this is not re-entrant anyway, so we keep the buffers
234 static u_char *bitmap = (u_char *)0;
235 static s_char *wmapbuf = (s_char *)0;
236 static s_char **wmap = (s_char **)0;
240 np = getnatp(player->cnum);
241 sprintf(what, "%d:%d,%d:%d",xrel(np,x-2),xrel(np,x+2),yrel(np,y-1),
243 if (!snxtsct(&ns, what))
246 wmapbuf = (s_char *)malloc((WORLD_Y * MAPWIDTH(1)) * sizeof(s_char));
248 wmap = (s_char **)malloc(WORLD_Y * sizeof(s_char *));
249 if (wmap && wmapbuf) {
250 for (i = 0; i < WORLD_Y; i++)
251 wmap[i] = &wmapbuf[MAPWIDTH(1) * i];
253 free((s_char *)wmap);
258 bitmap = (u_char *)malloc((WORLD_X * WORLD_Y) / 8);
259 if (!wmapbuf || !wmap || !bitmap) {
260 pr("Memory error, tell the deity.\n");
261 logerror("malloc failed in navi\n");
264 bzero((s_char *)bitmap, (WORLD_X * WORLD_Y) / 8);
265 /* zap any conditionals */
267 xyrelrange(np, &ns.range, &range);
268 blankfill((s_char *)wmapbuf, &ns.range, 1);
269 while (nxtsct(&ns, §)){
270 ptr = &wmap[ns.dy][ns.dx];
271 *ptr = dchr[sect.sct_type].d_mnem;
272 if (!show_designations &&
273 sect.sct_own != player->cnum &&
274 sect.sct_type != SCT_WATER &&
275 sect.sct_type != SCT_BSPAN &&
276 sect.sct_type != SCT_HARBR)
278 changed += map_set(player->cnum, sect.sct_x, sect.sct_y, *ptr, 0);
280 * We do it this way so that 'x' and 'X'
281 * bdesignations will show up. This can
282 * be used to mark mined sectors. So, the
283 * player will see the current des, UNLESS
284 * they've marked the sector 'x' or 'X',
285 * in which case they'll see that.
288 *ptr = player->bmap[sctoff(sect.sct_x, sect.sct_y)];
291 writemap(player->cnum);
292 for (i=0; i < ns.range.height; i++)
298 set_flagship(struct emp_qelem *list, struct shpstr **flagshipp)
300 struct mlist *mlp = (struct mlist *)(list->q_back);
304 else if ((*flagshipp)->shp_uid != mlp->ship.shp_uid)
305 pr("Changing flagship to ");
308 *flagshipp = &mlp->ship;
309 pr("%s\n", prship(&mlp->ship));