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(coord curx, coord cury, char *arg);
52 move_ground(struct sctstr *start, struct sctstr *end,
53 double weight, char *path,
54 int (*map)(coord, coord, char *), int exploring,
57 struct sctstr sect, ending_sect;
58 struct sctstr next, dsect;
59 coord curx, cury, oldx, oldy;
66 double mobility = start->sct_mobil;
80 if (path && sarg_xy(path, &dx, &dy) && getsect(dx, dy, &ending_sect)) {
81 if ((ending_sect.sct_x == start->sct_x) &&
82 (ending_sect.sct_y == start->sct_y)) {
83 pr("Start sector is ending sector!\n");
86 pr("Looking for best path to %s\n", path);
87 path = BestLandPath(buf2, start, &ending_sect, &total_mcost,
89 if (exploring && path) /* take off the 'h' */
90 path[strlen(path) - 1] = '\0';
92 pr("No owned path exists!\n");
94 pr("Using best path '%s', movement cost %1.3f\n",
96 strncpy(bpath, path, sizeof(bpath));
99 if ((total_mcost * weight) > mobility) {
100 pr("Not enough mobility to go all the way. Nothing moved.\n");
108 if (getsect(curx, cury, §) < 0) {
109 logerror("move_path: getsect %d,%d", curx, cury);
115 if (!movstr || *movstr == 0) {
117 map(curx, cury, NULL);
119 move_map(curx, cury, NULL);
121 sprintf(prompt, "<%.1f: %c %s> ", mobility,
122 dchr[sect.sct_type].d_mnem,
123 xyas(sect.sct_x, sect.sct_y, player->cnum));
124 movstr = getstring(prompt, buf);
126 if (movstr && sarg_xy(movstr, &dx, &dy)) {
127 if (getsect(dx, dy, &dsect)) {
128 movstr = BestLandPath(buf2, §, &dsect, &mv_cost,
131 pr("Invalid destination sector!\n");
135 if (movstr == NULL) {
136 pr("Can't get to %s from here!\n",
137 xyas(dx, dy, player->cnum));
139 if ((mv_cost * weight) > mobility) {
140 pr("Not enough mobility to go all the way. Nothing moved.\n");
143 pr("Using best path '%s', movement cost %1.3f\n",
145 strncpy(bpath, movstr, sizeof(bpath));
150 if (!movstr || *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(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, sect.sct_item[I_CIVIL]);
175 * now see if we can move into the
176 * next sector. Mobility, terrain,
177 * or ownership may prevent us.
179 tmpx = curx + diroff[dir][0];
180 tmpy = cury + diroff[dir][1];
181 if (getsect(tmpx, tmpy, &next) < 0) {
182 pr("You can't go there...\n");
187 if ((next.sct_type == SCT_SANCT) &&
188 (next.sct_own != player->cnum)) {
189 pr("Converts, huh?\n");
193 sect_mcost = sector_mcost(&next, MOB_ROAD);
194 if ((!player->owner && (!exploring
195 || next.sct_item[I_MILIT]
196 || next.sct_item[I_CIVIL]))
197 || sect_mcost == -1.0) {
198 /* already-owned, or prohibited terrain */
199 pr("You can't go there...\n");
203 sect_mcost *= weight;
204 if (sect_mcost > mobility) {
205 pr("Not enough mobility. ");
206 pr("You can't go there...\n");
210 mobility -= sect_mcost;
211 total_mcost += sect_mcost;
215 if (cury != start->sct_y)
217 if (curx != start->sct_x)
223 *dam += check_lmines(sect.sct_x, sect.sct_y, weight);
227 * Check and see if anyone will interdict us
229 if (takedam && chance(weight / 100.0) &&
230 ((curx != oldx) || (cury != oldy)))
231 *dam += ground_interdict(curx, cury, player->cnum,
237 intcost = (int)total_mcost;
240 if ((start->sct_x == end->sct_x) && (start->sct_y == end->sct_y)
244 if (chance(total_mcost - intcost))
252 move_map(coord curx, coord cury, char *arg)
260 snxtsct_dist(&ns, curx, cury, 1);
262 while (i < 7 && nxtsct(&ns, §)) {
263 /* Nasty: this relies on the iteration order */
264 view[i] = dchr[sect.sct_type].d_mnem;
265 switch (sect.sct_type) {
273 if (sect.sct_own != player->cnum && !player->god)
277 changed += map_set(player->cnum, ns.x, ns.y, view[i], 0);
281 writemap(player->cnum);
282 if (!getsect(curx, cury, §))
284 pr(" %c %c eff mob civ mil uw food work avail\n",
286 pr(" %c %c %c %3d %3d %4d %4d %4d %4d %3d %3d\n",
287 view[2], view[3], view[4],
288 sect.sct_effic, sect.sct_mobil,
289 sect.sct_item[I_CIVIL], sect.sct_item[I_MILIT], sect.sct_item[I_UW],
290 sect.sct_item[I_FOOD], sect.sct_work, sect.sct_avail);
291 pr(" %c %c\n", view[5], view[6]);
296 fly_map(coord curx, coord cury)
303 snxtsct_dist(&ns, curx, cury, 1);
305 while (i < 7 && nxtsct(&ns, §)) {
306 /* Nasty: this relies on the iteration order */
307 if (!(view[i] = player->bmap[sctoff(ns.x, ns.y)]))
312 pr(" %c %c\n", view[0], view[1]);
313 pr(" %c %c %c\n", view[2], view[3], view[4]);
314 pr(" %c %c\n", view[5], view[6]);
319 check_lmines(coord x, coord y, double weight)
324 getsect(x, y, §);
325 if (sect.sct_mines > 0 &&
326 sect.sct_oldown != player->cnum &&
327 chance(DMINE_LHITCHANCE(sect.sct_mines)) && chance(weight / 100.0)) {
329 pr("Blammo! Landmines detected! in %s ",
330 xyas(sect.sct_x, sect.sct_y, player->cnum));
334 pr("%d damage sustained.\n", dam);