/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2008, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2018, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
* ---
*
* navi.c: Navigate ships and such
- *
+ *
* Known contributors to this file:
* Ken Stevens, 1995 (rewritten)
* Ron Koenderink, 2006-2007
+ * Markus Armbruster, 2006-2015
*/
#include <config.h>
#include "commands.h"
-#include "map.h"
-#include "optlist.h"
-#include "path.h"
-#include "empobj.h"
#include "unit.h"
-static void pr_leader_change(struct empobj *leader);
-static struct empobj *get_leader(struct emp_qelem *list);
-static void switch_leader(struct emp_qelem *list, int uid);
-
int
navi(void)
{
struct nstr_item ni_ship;
struct emp_qelem ship_list;
- double minmob, maxmob;
- int together;
if (!snxtitem(&ni_ship, EF_SHIP, player->argp[1], NULL))
return RET_SYN;
shp_sel(&ni_ship, &ship_list);
- shp_nav(&ship_list, &minmob, &maxmob, &together, player->cnum);
if (QEMPTY(&ship_list)) {
pr("No ships\n");
return RET_FAIL;
}
-
- return do_unit_move(&ship_list, &together, &minmob, &maxmob);
-}
-
-int
-do_unit_move(struct emp_qelem *ulist, int *together,
- double *minmob, double *maxmob)
-{
- char *cp = NULL;
- int leader_uid;
- struct empobj *leader;
- int dir;
- int stopping = 0;
- int skip = 0;
- char buf[1024];
- char prompt[128];
- char scanspace[1024];
- char pathtaken[1024]; /* Doubtful we'll have a path longer than this */
- char *pt = pathtaken;
- char bmap_flag;
- int ac;
- short type;
-
- leader = get_leader(ulist);
- leader_uid = leader->uid;
- type = leader->ef_type;
- pr("%s is %s\n",
- type == EF_SHIP ? "Flagship" : "Leader",
- obj_nameof(leader));
-
- if (player->argp[2]) {
- strcpy(buf, player->argp[2]);
- if (!(cp = unit_path(*together, leader, buf)))
- cp = player->argp[2];
- }
-
- *pt = '\0';
- while (!QEMPTY(ulist)) {
- char dp[80];
-
- if (cp == NULL || *cp == '\0' || stopping) {
- stopping = 0;
- if (type == EF_SHIP)
- shp_nav(ulist, minmob, maxmob, together, player->cnum);
- else
- lnd_mar(ulist, minmob, maxmob, together, player->cnum);
- if (QEMPTY(ulist)) {
- pr("No %s left\n",
- type == EF_SHIP ? "ships" : "lands");
- if (type == EF_SHIP && strlen(pathtaken) > 1) {
- pathtaken[strlen(pathtaken) - 1] = '\0';
- pr("Path taken: %s\n", pathtaken);
- }
- return RET_OK;
- }
- leader = get_leader(ulist);
- if (leader->uid != leader_uid) {
- leader_uid = leader->uid;
- pr_leader_change(leader);
- stopping = 1;
- continue;
- }
- if (!skip)
- nav_map(leader->x, leader->y,
- type == EF_SHIP ?
- !(mchr[(int)leader->type].m_flags & M_SUB) : 1);
- else
- skip = 0;
- sprintf(prompt, "<%.1f:%.1f: %s> ", *maxmob,
- *minmob, xyas(leader->x, leader->y, player->cnum));
- cp = getstring(prompt, buf);
- /* Just in case any of our units were shelled while we were
- * at the prompt, we call shp_nav() or lnd_mar() again.
- */
- if (type == EF_SHIP)
- shp_nav(ulist, minmob, maxmob, together, player->cnum);
- else
- lnd_mar(ulist, minmob, maxmob, together, player->cnum);
- if (QEMPTY(ulist)) {
- pr("No %s left\n",
- type == EF_SHIP ? "ships" : "lands");
- if (type == EF_SHIP && strlen(pathtaken) > 1) {
- pathtaken[strlen(pathtaken) - 1] = '\0';
- pr("Path taken: %s\n", pathtaken);
- }
- return RET_OK;
- }
- leader = get_leader(ulist);
- if (leader->uid != leader_uid) {
- leader_uid = leader->uid;
- pr_leader_change(leader);
- stopping = 1;
- continue;
- }
- if (!(cp = unit_path(*together, leader, buf)))
- cp = buf;
- }
- if (type == EF_SHIP) {
- radmapnopr(leader->x, leader->y, (int)leader->effic,
- (int)techfact(leader->tech,
- mchr[(int)leader->type].m_vrnge),
- (mchr[(int)leader->type].m_flags & M_SONAR)
- ? techfact(leader->tech, 1.0) : 0.0);
- }
- if (cp == NULL || *cp == '\0')
- cp = &dirch[DIR_STOP];
- dir = chkdir(*cp, DIR_STOP, DIR_LAST);
- if (dir >= 0) {
- if (type == EF_SHIP) {
- stopping |= shp_nav_one_sector(ulist, dir,
- player->cnum, *together);
- if (stopping != 2) {
- *pt++ = dirch[dir];
- *pt = '\0';
- }
- } else
- stopping |=
- lnd_mar_one_sector(ulist, dir, player->cnum,
- *together);
- cp++;
- continue;
- }
- ac = parse(cp, scanspace, player->argp, NULL, NULL, NULL);
- if (ac <= 1) {
- sprintf(dp, "%d", leader->uid);
- player->argp[1] = dp;
- cp++;
- } else
- cp = NULL;
- bmap_flag = 0;
- switch (*player->argp[0]) {
- case 'B':
- bmap_flag = 'b';
- /*
- * fall through
- */
- case 'M':
- do_map(bmap_flag, leader->ef_type, player->argp[1],
- player->argp[2]);
- skip = 1;
- continue;
- case 'f':
- if (ac <= 1)
- switch_leader(ulist, -1);
- else
- switch_leader(ulist, atoi(player->argp[1]));
- leader = get_leader(ulist);
- if (leader->uid != leader_uid) {
- leader_uid = leader->uid;
- pr_leader_change(leader);
- }
- continue;
- case 'i':
- unit_list(ulist);
- continue;
- case 'm':
- if (type == EF_SHIP)
- stopping |= shp_sweep(ulist, 1, 1, player->cnum);
- else {
- lnd_sweep(ulist, 1, 1, player->cnum);
- stopping |= lnd_check_mines(ulist);
- }
- continue;
- case 'r':
- radar(leader->ef_type);
- skip = 1;
- player->btused++;
- continue;
- case 'l':
- do_look(type);
- player->btused++;
- continue;
- case 's':
- if (leader->ef_type != EF_SHIP)
- break;
- sona();
- player->btused++;
- skip = 1;
- continue;
- case 'd':
- if (ac == 2) {
- player->argp[2] = player->argp[1];
- sprintf(dp, "%d", leader->uid);
- player->argp[1] = dp;
- }
- if (type == EF_SHIP)
- mine();
- else
- landmine();
- skip = 1;
- player->btused++;
- continue;
- case 'v':
- unit_view(ulist);
- continue;
- }
- direrr("`%c' to stop", ", `%c' to view", NULL);
- pr(", `i' to list %s, `f' to change %s,\n",
- type == EF_SHIP ? "ships" : "units",
- type == EF_SHIP ? "flagship" : "leader");
- pr("`r' to radar, %s`l' to look, `M' to map, `B' to bmap,\n",
- type == EF_SHIP ? "`s' to sonar, " : "");
- pr("`d' to drop mines, and `m' to minesweep\n");
- stopping = 1;
- }
- if (type == EF_SHIP && strlen(pathtaken) > 1) {
- pathtaken[strlen(pathtaken) - 1] = '\0';
- pr("Path taken: %s\n", pathtaken);
- }
- return RET_OK;
-}
-
-int
-nav_map(int x, int y, int show_designations)
-{
- char *ptr;
- struct nstr_sect ns;
- struct natstr *np;
- struct sctstr sect;
- int i;
- /* Note this is not re-entrant anyway, so we keep the buffers
- around */
- static char *wmapbuf = NULL;
- static char **wmap = NULL;
- int changed = 0;
-
- if (!wmapbuf)
- wmapbuf = malloc(WORLD_Y * MAPWIDTH(1));
- if (!wmap) {
- wmap = malloc(WORLD_Y * sizeof(*wmap));
- if (wmap && wmapbuf) {
- for (i = 0; i < WORLD_Y; i++)
- wmap[i] = &wmapbuf[MAPWIDTH(1) * i];
- } else if (wmap) {
- free(wmap);
- wmap = NULL;
- }
- }
- if (!wmapbuf || !wmap) {
- pr("Memory error, tell the deity.\n");
- logerror("malloc failed in navi\n");
- return RET_FAIL;
- }
- snxtsct_dist(&ns, x, y, 1);
- np = getnatp(player->cnum);
- blankfill(wmapbuf, &ns.range, 1);
- while (nxtsct(&ns, §)) {
- ptr = &wmap[ns.dy][ns.dx];
- *ptr = dchr[sect.sct_type].d_mnem;
- if (!show_designations &&
- sect.sct_own != player->cnum &&
- sect.sct_type != SCT_WATER &&
- sect.sct_type != SCT_BSPAN && sect.sct_type != SCT_HARBR)
- *ptr = '?';
- changed += map_set(player->cnum, sect.sct_x, sect.sct_y, *ptr, 0);
- /*
- * We do it this way so that 'x' and 'X'
- * bdesignations will show up. This can
- * be used to mark mined sectors. So, the
- * player will see the current des, UNLESS
- * they've marked the sector 'x' or 'X',
- * in which case they'll see that.
- * --ts
- */
- *ptr = player->bmap[sect.sct_uid];
- }
- if (changed)
- writemap(player->cnum);
- for (i = 0; i < ns.range.height; i++)
- pr("%s\n", wmap[i]);
- return RET_OK;
-}
-
-static void
-pr_leader_change(struct empobj *leader)
-{
- pr("Changing %s to %s\n",
- leader->ef_type == EF_SHIP ? "flagship" : "leader",
- obj_nameof(leader));
-}
-
-static struct empobj *
-get_leader(struct emp_qelem *list)
-{
- return &((struct ulist *)(list->q_back))->unit.gen;
-}
-
-static void
-switch_leader(struct emp_qelem *list, int uid)
-{
- struct emp_qelem *qp, *save;
- struct ulist *ulp;
-
- if (QEMPTY(list))
- return;
-
- save = qp = list->q_back;
- do {
- emp_remque(qp);
- emp_insque(qp, list);
- qp = list->q_back;
- ulp = (struct ulist *)qp;
- if (ulp->unit.gen.uid == uid || uid == -1)
- break;
- } while (list->q_back != save);
+ return unit_move(&ship_list);
}
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