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 * lten.c: Transfer commodity from a ship to a land unit the ship is
31 * Known contributors to this file:
47 static void expose_land(struct shpstr *s1, struct lndstr *l1);
52 struct nstr_item targets;
53 struct nstr_item tenders;
57 struct mchrstr *vbase;
58 struct lchrstr *lbase;
69 if (!(ip = whatitem(player->argp[1], "Transfer what commodity? ")))
72 if (!snxtitem(&tenders, EF_SHIP,
73 getstarg(player->argp[2], "Tender(s)? ", buf)))
75 while (nxtitem(&tenders, &tender)) {
79 getstarg(player->argp[3], "Amount to transfer? ", buf)) == 0)
81 if (!check_ship_ok(&tender))
83 if ((amt = atoi(p)) == 0)
85 ontender = tender.shp_item[ip->i_uid];
86 if (ontender == 0 && amt > 0) {
87 pr("No %s on %s\n", ip->i_name, prship(&tender));
90 vbase = &mchr[(int)tender.shp_type];
91 maxtender = vbase->m_item[ip->i_uid];
93 pr("A %s cannot hold any %s\n",
94 mchr[(int)tender.shp_type].m_name, ip->i_name);
97 if (!snxtitem(&targets, EF_LAND,
98 getstarg(player->argp[4], "Units to be tended? ",
101 if (!check_ship_ok(&tender))
104 while (nxtitem(&targets, &target)) {
108 if (target.lnd_ship != tender.shp_uid)
110 ontarget = target.lnd_item[ip->i_uid];
111 if (ontarget == 0 && amt < 0) {
113 ip->i_name, prland(&target));
116 lbase = &lchr[(int)target.lnd_type];
117 maxtarget = lbase->l_item[ip->i_uid];
122 /* take from target and give to tender */
123 transfer = MIN(ontarget, -amt);
124 transfer = MIN(maxtender - ontender, transfer);
127 target.lnd_item[ip->i_uid] = ontarget - transfer;
128 ontender += transfer;
131 /* give to target from tender */
132 transfer = MIN(ontender, amt);
133 transfer = MIN(transfer, maxtarget - ontarget);
136 target.lnd_item[ip->i_uid] = ontarget + transfer;
137 ontender -= transfer;
140 expose_land(&tender, &target);
141 putland(target.lnd_uid, &target);
142 if (amt > 0 && ontender == 0) {
143 pr("%s out of %s\n", prship(&tender), ip->i_name);
147 pr("%d total %s transferred %s %s\n",
148 total, ip->i_name, (amt > 0) ? "off of" : "to",
150 tender.shp_item[ip->i_uid] = ontender;
151 tender.shp_mission = 0;
152 putship(tender.shp_uid, &tender);
158 expose_land(struct shpstr *s1, struct lndstr *l1)
160 if (s1->shp_pstage == PLG_INFECT && l1->lnd_pstage == PLG_HEALTHY)
161 l1->lnd_pstage = PLG_EXPOSED;
162 if (l1->lnd_pstage == PLG_INFECT && s1->shp_pstage == PLG_HEALTHY)
163 s1->shp_pstage = PLG_EXPOSED;