Import of Empire 4.2.12
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commit
d8b7fdfae1
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378
src/lib/commands/tend.c
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378
src/lib/commands/tend.c
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/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* tend.c: Transfer goodies from one ship to another.
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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* Thomas Ruschak, 1992
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* Steve McClure, 2000
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*/
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#ifdef Rel4
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#include <string.h>
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#endif /* Rel4 */
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#include "misc.h"
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#include "player.h"
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#include "var.h"
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#include "xy.h"
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#include "file.h"
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#include "ship.h"
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#include "item.h"
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#include "nsc.h"
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#include "nat.h"
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#include "land.h"
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#include "plane.h"
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#include "nuke.h"
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#include "genitem.h"
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#include "commands.h"
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static void expose_ship(struct shpstr *s1, struct shpstr *s2);
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static int tend_land(struct shpstr *tenderp, s_char *units);
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int
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tend(void)
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{
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struct nstr_item targets;
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struct nstr_item tenders;
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struct shpstr tender;
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struct shpstr target;
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struct ichrstr *ip;
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struct mchrstr *vbase;
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int amt;
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int retval;
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int ontender;
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int ontarget;
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int maxtender;
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int maxtarget;
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int transfer;
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int total;
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int type;
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s_char *p;
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s_char prompt[512];
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s_char buf[1024];
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if (!(p = getstarg(player->argp[1],
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"Tend what commodity (or 'land')? ", buf)) || !*p)
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return RET_SYN;
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if (!strncmp(p, "land", 4))
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type = EF_LAND;
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else if (NULL != (ip = whatitem(p, (s_char *)0)))
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type = EF_SECTOR;
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else {
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pr("Bad commodity.\n");
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return RET_SYN;
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}
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if (!snxtitem(&tenders, EF_SHIP, getstarg(player->argp[2], "Tender(s)? ", buf)))
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return RET_SYN;
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while (nxtitem(&tenders, (s_char *)&tender)) {
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if (!player->owner)
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continue;
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if (type == EF_LAND) {
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sprintf(prompt, "Land unit(s) to tend from %s? ",
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prship(&tender));
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if (!(p = getstarg(player->argp[3], prompt, buf)) || !*p)
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continue;
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if (!check_ship_ok(&tender))
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return RET_SYN;
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if (0 != (retval=tend_land(&tender, p)))
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return retval;
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continue;
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}
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sprintf(prompt, "Number of %s to tend from %s? ",
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ip->i_name, prship(&tender));
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if (!(p = getstarg(player->argp[3], prompt, buf)) || !*p)
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continue;
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if (!check_ship_ok(&tender))
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return RET_SYN;
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if (!(amt = atoi(p))) {
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pr("Amount must be non-zero!\n");
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return RET_SYN;
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}
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ontender = getvar(ip->i_vtype, (s_char *)&tender, EF_SHIP);
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if (ontender == 0 && amt > 0) {
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pr("No %s on %s\n", ip->i_name, prship(&tender));
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return RET_FAIL;
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}
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vbase = &mchr[(int)tender.shp_type];
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maxtender = vl_find(ip->i_vtype, vbase->m_vtype,
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vbase->m_vamt, (int)vbase->m_nv);
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if (maxtender == 0) {
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pr("A %s cannot hold any %s\n",
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mchr[(int)tender.shp_type].m_name,
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ip->i_name);
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break;
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}
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if (!snxtitem(&targets, EF_SHIP,
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getstarg(player->argp[4], "Ships to be tended? ", buf)))
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break;
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if (!check_ship_ok(&tender))
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return RET_SYN;
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total = 0;
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while (tend_nxtitem(&targets, (s_char *)&target)) {
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if (!player->owner &&
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(getrel(getnatp(target.shp_own),
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player->cnum) < FRIENDLY))
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continue;
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if (target.shp_uid == tender.shp_uid)
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continue;
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if (tender.shp_x != target.shp_x ||
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tender.shp_y != target.shp_y)
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continue;
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ontarget = getvar(ip->i_vtype,
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(s_char *)&target, EF_SHIP);
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if (ontarget == 0 && amt < 0) {
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pr("No %s on %s\n",
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ip->i_name, prship(&target));
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continue;
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}
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vbase = &mchr[(int)target.shp_type];
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maxtarget = vl_find(ip->i_vtype, vbase->m_vtype,
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vbase->m_vamt, (int)vbase->m_nv);
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if (amt < 0) {
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if (!player->owner)
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amt=0;
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/* take from target and give to tender */
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transfer = min(ontarget, -amt);
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transfer = min(maxtender - ontender, transfer);
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if (transfer == 0)
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continue;
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putvar(ip->i_vtype, ontarget - transfer,
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(s_char *)&target, EF_SHIP);
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ontender += transfer;
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total += transfer;
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} else {
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/* give to target from tender */
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transfer = min(ontender, amt);
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transfer = min(transfer, maxtarget - ontarget);
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if (transfer == 0)
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continue;
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putvar(ip->i_vtype, ontarget + transfer,
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(s_char *)&target, EF_SHIP);
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ontender -= transfer;
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total += transfer;
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}
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expose_ship(&tender, &target);
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putship(target.shp_uid, &target);
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if (amt > 0 && ontender == 0) {
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pr("%s out of %s\n",
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prship(&tender),
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ip->i_name);
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break;
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}
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}
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pr("%d total %s transferred %s %s\n",
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total, ip->i_name, (amt > 0) ? "off of" : "to",
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prship(&tender));
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putvar(ip->i_vtype, ontender, (s_char *)&tender, EF_SHIP);
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tender.shp_mission = 0;
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putship(tender.shp_uid, &tender);
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}
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return RET_OK;
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}
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static void
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expose_ship(struct shpstr *s1, struct shpstr *s2)
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{
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if (getvar(V_PSTAGE, (s_char *)s1, EF_SHIP) == PLG_INFECT &&
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getvar(V_PSTAGE, (s_char *)s2, EF_SHIP) == PLG_HEALTHY)
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putvar(V_PSTAGE, PLG_EXPOSED, (s_char *)s2, EF_SHIP);
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if (getvar(V_PSTAGE, (s_char *)s2, EF_SHIP) == PLG_INFECT &&
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getvar(V_PSTAGE, (s_char *)s1, EF_SHIP) == PLG_HEALTHY)
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putvar(V_PSTAGE, PLG_EXPOSED, (s_char *)s1, EF_SHIP);
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}
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/*
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* tend_nxtitem.c
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*
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* get next item from list. Stolen from nxtitem to make 1 itsy-bitsy change
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*
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* Dave Pare, 1989
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*/
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int
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tend_nxtitem(struct nstr_item *np, caddr_t ptr)
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{
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struct genitem *gp;
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int selected;
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if (np->sel == NS_UNDEF)
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return 0;
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gp = (struct genitem *) ptr;
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do {
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if (np->sel == NS_LIST) {
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np->index++;
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if (np->index >= np->size)
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return 0;
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np->cur = np->list[np->index];
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} else {
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np->cur++;
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}
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if (!np->read(np->type, np->cur, ptr)) {
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/* if read fails, fatal */
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return 0;
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}
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selected = 1;
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switch (np->sel) {
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case NS_LIST:
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/* The change is to take the player->owner check out here */
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break;
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case NS_ALL:
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/* XXX maybe combine NS_LIST and NS_ALL later */
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break;
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case NS_DIST:
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if (!xyinrange(gp->x, gp->y, &np->range)) {
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selected = 0;
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break;
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}
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np->curdist = mapdist((int)gp->x, (int)gp->y,
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(int)np->cx, (int)np->cy);
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if (np->curdist > np->dist)
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selected = 0;
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break;
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case NS_AREA:
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if (!xyinrange(gp->x, gp->y, &np->range))
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selected = 0;
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if (gp->x == np->range.hx || gp->y == np->range.hy)
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selected = 0;
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break;
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case NS_XY:
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if (gp->x != np->cx || gp->y != np->cy)
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selected = 0;
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break;
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case NS_GROUP:
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if (np->group != gp->group)
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selected = 0;
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break;
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default:
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logerror("nxtitem: bad selector %d\n", np->sel);
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return 0;
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}
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if (selected && np->ncond) {
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/* nstr_exec is expensive, so we do it last */
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if (!nstr_exec(np->cond, np->ncond, ptr, np->type))
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selected = 0;
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}
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} while (!selected);
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return 1;
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}
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static int
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tend_land(struct shpstr *tenderp, s_char *units)
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{
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struct nstr_item lni;
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struct nstr_item targets;
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struct shpstr target;
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struct lndstr land;
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struct plnstr plane;
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struct nstr_item pni;
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s_char buf[1024];
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if (!snxtitem(&lni, EF_LAND, units))
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return RET_SYN;
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while(nxtitem(&lni, (s_char *)&land)) {
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if (!player->owner)
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continue;
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if (land.lnd_ship != tenderp->shp_uid) {
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pr("%s is not on %s!\n",
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prland(&land), prship(tenderp));
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continue;
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}
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if (!(lchr[(int)land.lnd_type].l_flags & L_ASSAULT)) {
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pr("%s does not have \"assault\" capability and can't be tended\n", prland(&land));
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continue;
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}
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if (!snxtitem(&targets, EF_SHIP,
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getstarg(player->argp[4], "Ship to be tended? ", buf)))
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break;
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if (!check_land_ok(&land))
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return RET_SYN;
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while (tend_nxtitem(&targets, (s_char *)&target)) {
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if (!player->owner &&
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(getrel(getnatp(target.shp_own),
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player->cnum) < FRIENDLY))
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continue;
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if (target.shp_uid == tenderp->shp_uid)
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continue;
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if (tenderp->shp_x != target.shp_x ||
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tenderp->shp_y != target.shp_y)
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continue;
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/* Fit unit on ship */
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count_units(&target);
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getship(target.shp_uid,&target);
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if (target.shp_nland >= mchr[(int)target.shp_type].m_nland) {
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if (mchr[(int)target.shp_type].m_nland)
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pr("%s doesn't have room for any more land units!\n",prship(&target));
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else
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pr("%s doesn't carry land units!\n",prship(&target));
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continue;
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}
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pr("%s transferred from %s to %s\n",
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prland(&land), prship(tenderp), prship(&target));
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sprintf(buf, "loaded on your %s at %s",
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prship(&target),xyas(target.shp_x,target.shp_y,
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target.shp_own));
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gift(target.shp_own,player->cnum,(s_char *)&land,
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EF_LAND, buf);
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makelost(EF_LAND, land.lnd_own, land.lnd_uid, land.lnd_x, land.lnd_y);
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land.lnd_own = target.shp_own;
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makenotlost(EF_LAND, land.lnd_own, land.lnd_uid, land.lnd_x, land.lnd_y);
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land.lnd_ship = target.shp_uid;
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land.lnd_harden = 0;
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land.lnd_mission = 0;
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target.shp_nland++;
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putland(land.lnd_uid,&land);
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expose_ship(tenderp, &target);
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putship(target.shp_uid, &target);
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count_units(tenderp);
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putship(tenderp->shp_uid, tenderp);
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snxtitem_xy(&pni,EF_PLANE,land.lnd_x,land.lnd_y);
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while (nxtitem(&pni, (s_char *)&plane)) {
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if (plane.pln_flags & PLN_LAUNCHED)
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continue;
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if (plane.pln_land != land.lnd_uid)
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continue;
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sprintf(buf, "loaded on %s", prship(&target));
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gift(target.shp_own,player->cnum,(s_char *)&plane,
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EF_PLANE, buf);
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makelost(EF_PLANE, plane.pln_own, plane.pln_uid, plane.pln_x, plane.pln_y);
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plane.pln_own = target.shp_own;
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makenotlost(EF_PLANE, plane.pln_own, plane.pln_uid, plane.pln_x, plane.pln_y);
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plane.pln_mission = 0;
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putplane(plane.pln_uid,&plane);
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}
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}
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}
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return 0;
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}
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