2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2013, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * cons.c: Consider a loan or treaty
29 * Known contributors to this file:
42 * Things common to a loan or treaty.
45 int type; /* EF_LOAN or EF_TREATY */
47 char *name; /* "loan" or "treaty" */
48 char *Name; /* "Loan" or "Treaty" */
49 natid proposer; /* country offering */
50 natid proposee; /* country offered to */
51 natid mailee; /* who gets mail about it */
52 char op; /* 'a', 'd', or 'p' */
54 struct lonstr l; /* the loan */
55 struct trtstr t; /* the treaty */
59 static int cons_choose(struct ltcomstr *ltcp);
60 static int treaty_accept(struct ltcomstr *ltcp);
61 static int treaty_decline(struct ltcomstr *ltcp);
62 static int loan_accept(struct ltcomstr *ltcp);
63 static int loan_decline(struct ltcomstr *ltcp);
64 static int postpone(struct ltcomstr *ltcp);
65 static void accpt(struct ltcomstr *ltcp);
66 static void decline(struct ltcomstr *ltcp);
67 static void late(struct ltcomstr *ltcp);
68 static void prev_signed(struct ltcomstr *ltcp);
76 rv = cons_choose(<c);
82 rv = (ltc.type == EF_TREATY) ? treaty_accept(<c)
86 rv = (ltc.type == EF_TREATY) ? treaty_decline(<c)
93 pr("Bad operation %c from cons_choose; get help!\n", ltc.op);
101 * Choose whether we want to accept, decline, or postpone a
102 * loan or treaty. Put all the goodies in ltcp, and return
103 * RET_OK if all goes well, and anything else on error.
106 cons_choose(struct ltcomstr *ltcp)
108 static int lon_or_trt[] = { EF_LOAN, EF_TREATY, EF_BAD };
115 memset(ltcp, 0, sizeof(*ltcp));
116 if (!getstarg(player->argp[1], "loan or treaty? ", buf))
118 ltcp->type = ef_byname_from(buf, lon_or_trt);
119 switch (ltcp->type) {
122 pr("Treaties are not enabled.\n");
125 ltcp->name = "treaty";
126 ltcp->Name = "Treaty";
130 pr("Loans are not enabled.\n");
137 pr("You must specify \"loan\" or \"treaty\".\n");
140 sprintf(prompt, "%s number? ", ltcp->Name);
141 if ((ltcp->num = onearg(player->argp[2], prompt)) < 0)
143 if (!ef_read(ltcp->type, ltcp->num, <cp->u) ||
144 !(ltcp->type == EF_TREATY
145 ? distrea(ltcp->num, <cp->u.t)
146 : disloan(ltcp->num, <cp->u.l))) {
147 pr("%s #%d is not being offered to you!\n", ltcp->Name, ltcp->num);
150 switch (ltcp->type) {
153 if (lp->l_status == LS_SIGNED) {
154 pr("That loan has already been accepted!\n");
157 ltcp->proposer = lp->l_loner;
158 ltcp->proposee = lp->l_lonee;
162 if (tp->trt_status == TS_SIGNED) {
163 pr("That treaty has already been accepted!\n");
166 ltcp->proposer = tp->trt_cna;
167 ltcp->proposee = tp->trt_cnb;
170 ltcp->mailee = (ltcp->proposer == player->cnum)
171 ? ltcp->proposee : ltcp->proposer;
172 p = getstarg(player->argp[3], "Accept, decline or postpone? ", buf);
173 if (!p || (*p != 'a' && *p != 'd' && *p != 'p'))
180 * Accept a loan. If the offering country has too little money,
181 * leave him $100 left and offer the rest. Return RET_OK on
182 * success, anything else on error.
185 loan_accept(struct ltcomstr *ltcp)
188 struct natstr *lender;
189 struct nstr_item nstr;
193 if (ltcp->proposee != player->cnum) {
194 pr("%s %d is still pending.\n", ltcp->Name, ltcp->num);
197 if (!getloan(ltcp->num, lp)) {
198 logerror("loan_accept: can't read loan");
199 pr("can't read loan; get help!\n");
202 if (lp->l_status == LS_FREE) { /* other guy retratcted already */
206 if (lp->l_status == LS_SIGNED) { /* already signed somehow */
210 /* check to see if a loan already exists */
211 snxtitem_all(&nstr, EF_LOAN);
212 while (nxtitem(&nstr, &loan)) {
213 if (loan.l_status == LS_SIGNED && loan.l_lonee == lp->l_loner
214 && (loan.l_loner == lp->l_lonee)) {
215 pr("He already owes you money - make him repay his loan!\n");
219 lender = getnatp(ltcp->proposer);
220 if (lender->nat_money < lp->l_amtdue) { /* other guy is poor */
221 lp->l_amtdue = lender->nat_money - 100;
222 pr("%s no longer has the funds.\n", cname(ltcp->proposer));
223 if (lp->l_amtdue <= 0)
225 pr("You may borrow $%d at the same terms.\n", lp->l_amtdue);
227 lender->nat_money -= lp->l_amtdue;
229 player->dolcost -= lp->l_amtdue;
231 (void)time(&lp->l_lastpay);
232 lp->l_duedate = lp->l_ldur * SECS_PER_DAY + lp->l_lastpay;
233 lp->l_status = LS_SIGNED;
234 if (!putloan(ltcp->num, lp)) {
235 pr("Problem writing lp->to disk; get help!\n");
239 pr("You are now $%d richer (sort of).\n", lp->l_amtdue);
244 * Declne a loan. Return RET_OK on success, anything else on error.
247 loan_decline(struct ltcomstr *ltcp)
252 if (!getloan(ltcp->num, lp)) {
253 logerror("loan_decline: can't read loan");
254 pr("can't read loan; get help!\n");
257 /* loan got accepted somehow between now and last time we checked */
258 if (lp->l_status == LS_SIGNED) {
262 lp->l_status = LS_FREE;
263 if (!putloan(ltcp->num, lp)) {
264 logerror("loan_decline: can't write loan");
265 pr("can't write loan; get help!\n");
273 * Accept a treaty. Return RET_OK on success, anything else on error.
276 treaty_accept(struct ltcomstr *ltcp)
281 if (ltcp->proposee != player->cnum) {
282 pr("%s %d is still pending.\n", ltcp->Name, ltcp->num);
285 if (!gettre(ltcp->num, tp)) {
286 pr("treaty_accept: can't read treaty");
287 pr("can't read treaty; get help!\n");
290 if (tp->trt_status == TS_FREE) { /* treaty offer withdrawn */
294 if (tp->trt_status == TS_SIGNED) { /* somehow got accepted */
298 tp->trt_status = TS_SIGNED;
299 if (!puttre(ltcp->num, tp)) {
300 pr("treaty_accept: can't write treaty");
301 pr("Problem saving treaty; get help!\n");
305 pr("Treaty in effect until %s", ctime(&tp->trt_exp));
310 * Decline a treaty. Return RET_OK on success, anything else on error.
313 treaty_decline(struct ltcomstr *ltcp)
318 if (!gettre(ltcp->num, tp)) {
319 logerror("treaty_decline: can't read treaty");
320 pr("can't read treaty; get help!\n");
323 /* treaty got signed somehow between now and last time we read it */
324 if (tp->trt_status == TS_SIGNED) {
328 tp->trt_status = TS_FREE;
329 if (!puttre(ltcp->num, tp)) {
330 logerror("treaty_decline: can't write treaty");
331 pr("Problem saving treaty; get help!\n");
339 * Postpone a treaty; always succeeds.
342 postpone(struct ltcomstr *ltcp)
344 pr("%s %d is still pending.\n", ltcp->Name, ltcp->num);
345 if (ltcp->proposee == player->cnum)
346 wu(0, ltcp->proposer, "%s %d considered by %s\n",
347 ltcp->name, ltcp->num, cname(player->cnum));
352 * Somebody tried to accept a loan/treaty that was retracted,
353 * or to decline a loan/treaty they already signed.
356 late(struct ltcomstr *ltcp)
358 pr("Too late; that %s %s!\n", ltcp->name,
359 (ltcp->op == 'a') ? "is no longer being offered"
360 : "has already been accepted");
364 * Loan or treaty was previously signed.
367 prev_signed(struct ltcomstr *ltcp)
369 pr("%s #%d is already in effect.\n", ltcp->Name, ltcp->num);
373 * Post-processing after successful declination of loan or treaty.
374 * Notify the folks involved.
377 decline(struct ltcomstr *ltcp)
379 if (ltcp->proposee == player->cnum) {
380 wu(0, ltcp->proposer, "%s %d refused by %s\n",
381 ltcp->Name, ltcp->num, cname(player->cnum));
382 pr("%s %d refused.\n", ltcp->Name, ltcp->num);
384 wu(0, ltcp->proposee,
385 "%s offer %d retracted by %s\n",
386 ltcp->Name, ltcp->num, cname(player->cnum));
387 pr("%s offer %d retracted.\n", ltcp->Name, ltcp->num);
392 * Post-processing after successful acceptance of loan or treaty.
393 * Notify the press, and the folks involved.
394 * (Weird spelling is to avoid accept(2)).
397 accpt(struct ltcomstr *ltcp)
399 if (ltcp->type == EF_LOAN)
400 nreport(ltcp->proposer, N_MAKE_LOAN, player->cnum, 1);
402 nreport(player->cnum, N_SIGN_TRE, ltcp->mailee, 1);
403 wu(0, ltcp->mailee, "%s #%d accepted by %s\n",
404 ltcp->Name, ltcp->num, cname(player->cnum));