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 * move.c: Move something somewhere.
30 * Known contributors to this file:
47 #include "prototypes.h"
49 static int move_map(s_char *what, coord curx, coord cury, s_char *arg);
52 move_ground(s_char *what, struct sctstr *start, struct sctstr *end,
53 double weight, s_char *path,
54 int (*map)(s_char *, coord, coord, s_char *), int exploring,
57 struct sctstr sect, ending_sect;
58 struct sctstr next, dsect;
59 coord curx, cury, oldx, oldy;
66 double mobility = (double)start->sct_mobil;
69 int takedam = (*dam), out = 0;
79 if (path && sarg_xy(path, &dx, &dy) && getsect(dx, dy, &ending_sect)) {
80 if ((ending_sect.sct_x == start->sct_x) &&
81 (ending_sect.sct_y == start->sct_y)) {
82 pr("Start sector is ending sector!\n");
85 pr("Looking for best path to %s\n", path);
86 path = BestLandPath(buf2, start, &ending_sect, &total_mcost,
88 if (exploring && (path != (s_char *)0)) /* take off the 'h' */
89 *(path + strlen(path) - 1) = '\0';
90 if (path == (s_char *)0)
91 pr("No owned path exists!\n");
93 pr("Using best path '%s', movement cost %1.3f\n",
95 strncpy(bpath, path, sizeof(bpath));
98 if ((total_mcost * weight) > mobility) {
99 pr("Not enough mobility to go all the way. Nothing moved.\n");
107 if (getsect(curx, cury, §) < 0) {
108 logerror("move_path: getsect %d,%d", curx, cury);
114 if (movstr == 0 || *movstr == 0) {
116 map(what, curx, cury, (s_char *)0);
118 move_map(what, curx, cury, (s_char *)0);
120 sprintf(prompt, "<%.1f: %c %s> ", mobility,
121 dchr[sect.sct_type].d_mnem,
122 xyas(sect.sct_x, sect.sct_y, player->cnum));
123 movstr = getstring(prompt, buf);
125 if (movstr && sarg_xy(movstr, &dx, &dy)) {
126 if (getsect(dx, dy, &dsect)) {
127 movstr = BestLandPath(buf2, §, &dsect, &mv_cost,
130 pr("Invalid destination sector!\n");
131 movstr = (s_char *)0;
134 if (movstr == (s_char *)0) {
135 pr("Can't get to %s from here!\n",
136 xyas(dx, dy, player->cnum));
137 movstr = (s_char *)0;
139 if ((mv_cost * weight) > mobility) {
140 pr("Not enough mobility to go all the way. Nothing moved.\n");
141 movstr = (s_char *)0;
143 pr("Using best path '%s', movement cost %1.3f\n",
145 strncpy(bpath, movstr, sizeof(bpath));
150 if (movstr == 0 || *movstr == 0) {
151 buf2[0] = dirch[DIR_STOP];
155 if ((dir = chkdir(*movstr, DIR_STOP, DIR_MAP)) < 0) {
156 pr("\"%c\" is not legal...", *movstr);
157 direrr("'%c' to stop ", "'%c' to view ", "& '%c' to map\n");
162 if (dir == DIR_MAP) {
164 map(what, curx, cury, movstr + 1);
167 } else if (dir == DIR_STOP)
169 else if (dir == DIR_VIEW) {
170 pr("%d%% %s with %d civilians.\n", sect.sct_effic,
171 dchr[sect.sct_type].d_name,
172 sect.sct_item[I_CIVIL]);
176 * now see if we can move into the
177 * next sector. Mobility, terrain,
178 * or ownership may prevent us.
180 tmpx = curx + diroff[dir][0];
181 tmpy = cury + diroff[dir][1];
182 if (getsect(tmpx, tmpy, &next) < 0) {
183 pr("You can't go there...\n");
188 if ((next.sct_type == SCT_SANCT) &&
189 (next.sct_own != player->cnum)) {
190 pr("Converts, huh?\n");
194 sect_mcost = sector_mcost(&next, MOB_ROAD);
195 if ((!player->owner && (!exploring
196 || next.sct_item[I_MILIT]
197 || next.sct_item[I_CIVIL]))
198 || sect_mcost == -1.0) {
199 /* already-owned, or prohibited terrain */
200 pr("You can't go there...\n");
204 sect_mcost *= weight;
205 if (sect_mcost > mobility) {
206 pr("Not enough mobility. ");
207 pr("You can't go there...\n");
211 mobility -= sect_mcost;
212 total_mcost += sect_mcost;
216 if (cury != start->sct_y)
218 if (curx != start->sct_x)
224 *dam += check_lmines(sect.sct_x, sect.sct_y, weight);
228 * Check and see if anyone will interdict us
230 if (takedam && chance(weight / 100.0) &&
231 ((curx != oldx) || (cury != oldy)))
232 (*dam) += ground_interdict(curx, cury, player->cnum,
238 intcost = (int)total_mcost;
241 if ((start->sct_x == end->sct_x) && (start->sct_y == end->sct_y)
245 if (chance(total_mcost - intcost))
253 move_map(s_char *what, coord curx, coord cury, s_char *arg)
264 np = getnatp(player->cnum);
265 rel_x = xrel(np, curx);
266 rel_y = yrel(np, cury);
267 sprintf(range, "%d:%d,%d:%d", rel_x - 2, rel_x + 2, rel_y - 1,
270 /* This is necessary, otherwise move_map would attempt to pay */
271 /* attention to the conditional arguments left behind by such */
272 /* a command as "tran p -1,-1 ?eff=100".. It'd then only see */
273 /* 100% efficienct sects, and get all screwed up --ts */
274 if (!snxtsct(&ns, range))
277 while (i < 7 && nxtsct(&ns, §)) {
278 view[i] = dchr[sect.sct_type].d_mnem;
279 switch (sect.sct_type) {
287 if (sect.sct_own != player->cnum && !player->god)
291 changed += map_set(player->cnum, ns.x, ns.y, view[i], 0);
295 writemap(player->cnum);
296 if (!getsect(curx, cury, §))
298 pr(" %c %c eff mob civ mil uw food work avail\n",
300 pr(" %c %c %c %3d %3d %4d %4d %4d %4d %3d %3d\n",
301 view[2], view[3], view[4],
302 sect.sct_effic, sect.sct_mobil,
303 sect.sct_item[I_CIVIL], sect.sct_item[I_MILIT], sect.sct_item[I_UW],
304 sect.sct_item[I_FOOD], sect.sct_work, sect.sct_avail);
305 pr(" %c %c\n", view[5], view[6]);
310 fly_map(coord curx, coord cury)
320 np = getnatp(player->cnum);
321 rel_x = xrel(np, curx);
322 rel_y = yrel(np, cury);
323 sprintf(range, "%d:%d,%d:%d", rel_x - 2, rel_x + 2, rel_y - 1,
326 /* This is necessary, otherwise move_map would attempt to pay */
327 /* attention to the conditional arguments left behind by such */
328 /* a command as "tran p -1,-1 ?eff=100".. It'd then only see */
329 /* 100% efficienct sects, and get all screwed up --ts */
331 if (!snxtsct(&ns, range))
334 while (i < 7 && nxtsct(&ns, §)) {
335 if (!(view[i] = player->bmap[sctoff(ns.x, ns.y)]))
340 pr(" %c %c\n", view[0], view[1]);
341 pr(" %c %c %c\n", view[2], view[3], view[4]);
342 pr(" %c %c\n", view[5], view[6]);
347 check_lmines(coord x, coord y, double weight)
352 getsect(x, y, §);
353 if (sect.sct_mines > 0 &&
354 sect.sct_oldown != player->cnum &&
355 chance(DMINE_LHITCHANCE(sect.sct_mines)) && chance(weight / 100.0)) {
357 pr("Blammo! Landmines detected! in %s ",
358 xyas(sect.sct_x, sect.sct_y, player->cnum));
362 pr("%d damage sustained.\n", dam);