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 * land.c: Do production for land units
30 * Known contributors to this file:
32 * Thomas Ruschak, 1992
58 static int landrepair(struct lndstr *, struct natstr *,
60 static void upd_land(struct lndstr *lp, int etus,
61 struct natstr *np, int *bp, int build);
64 prod_land(int etus, int natnum, int *bp, int build)
65 /* build = 1, maintain = 0 */
72 int lastx = 9999, lasty = 9999;
74 bp_enable_cachepath();
75 for (n = 0; NULL != (lp = getlandp(n)); n++) {
78 if (lp->lnd_own != natnum)
81 sp = getsectp(lp->lnd_x, lp->lnd_y);
82 if (sp->sct_type == SCT_SANCT)
84 if (lastx == 9999 || lasty == 9999) {
88 if (lastx != lp->lnd_x || lasty != lp->lnd_y) {
90 bp_disable_cachepath();
92 bp_enable_cachepath();
94 np = getnatp(lp->lnd_own);
95 start_money = np->nat_money;
96 upd_land(lp, etus, np, bp, build);
97 lnd_money[lp->lnd_own] += np->nat_money - start_money;
98 if (!build || np->nat_money != start_money)
100 if (player->simulation)
101 np->nat_money = start_money;
103 bp_disable_cachepath();
104 bp_clear_cachepath();
110 upd_land(struct lndstr *lp, int etus,
111 struct natstr *np, int *bp, int build)
112 /* build = 1, maintain = 0 */
117 int min = morale_base - (int)np->nat_level[NAT_HLEV];
123 if (!player->simulation)
124 if (lp->lnd_retreat < min)
125 lp->lnd_retreat = min;
127 lcp = &lchr[(int)lp->lnd_type];
129 if (np->nat_priorities[PRI_LBUILD] == 0 || np->nat_money < 0)
131 if (lp->lnd_effic < LAND_MINEFF || !landrepair(lp, np, bp, etus)) {
132 makelost(EF_LAND, lp->lnd_own, lp->lnd_uid, lp->lnd_x,
139 if (np->nat_level[NAT_TLEV] < lp->lnd_tech * 0.85)
141 if (lcp->l_flags & L_ENGINEER)
143 /* cost = -(mult * etus * MIN(0.0, money_land * LND_COST(lcp->l_cost, lp->lnd_tech - lcp->l_tech)));*/
144 cost = -(mult * etus * MIN(0.0, money_land * lcp->l_cost));
145 if ((np->nat_priorities[PRI_LMAINT] == 0 || np->nat_money < cost)
146 && !player->simulation) {
147 if ((eff = lp->lnd_effic - etus / 5) < LAND_MINEFF) {
149 "%s lost to lack of maintenance\n", prland(lp));
150 makelost(EF_LAND, lp->lnd_own, lp->lnd_uid, lp->lnd_x,
156 "%s lost %d%% to lack of maintenance\n",
157 prland(lp), lp->lnd_effic - eff);
160 np->nat_money -= cost;
163 /* Grab more stuff */
164 if ((opt_NOFOOD == 0) && !player->simulation)
165 resupply_commod(lp, I_FOOD);
167 if (!player->simulation) {
168 if ((n = feed_land(lp, etus, &needed, 1)) > 0) {
169 wu(0, lp->lnd_own, "%d starved in %s%s\n",
171 (lp->lnd_effic < LAND_MINEFF ? ", killing it" : ""));
173 nreport(lp->lnd_own, N_DIE_FAMINE, 0, 1);
176 * do plague stuff. plague can't break out on land units,
177 * but it can still kill people on them.
179 pstage = lp->lnd_pstage;
180 ptime = lp->lnd_ptime;
181 if (pstage != PLG_HEALTHY) {
182 n = plague_people(np, lp->lnd_item, &pstage, &ptime, etus);
186 "PLAGUE deaths reported on %s\n", prland(lp));
187 nreport(lp->lnd_own, N_DIE_PLAGUE, 0, 1);
190 wu(0, lp->lnd_own, "%s battling PLAGUE\n", prland(lp));
193 /* Are we still incubating? */
195 /* Yes. Will it turn "infectious" next time? */
197 /* Yes. Report an outbreak. */
199 "Outbreak of PLAGUE on %s!\n", prland(lp));
200 nreport(lp->lnd_own, N_OUT_PLAGUE, 0, 1);
203 /* It has already moved on to "infectious" */
205 "%s battling PLAGUE\n", prland(lp));
209 /* Has the plague moved to "incubation" yet? */
211 /* Yes. Will it turn "infectious" next time? */
213 /* Yes. Report an outbreak. */
215 "Outbreak of PLAGUE on %s!\n", prland(lp));
216 nreport(lp->lnd_own, N_OUT_PLAGUE, 0, 1);
223 lp->lnd_pstage = pstage;
224 lp->lnd_ptime = ptime;
226 } /* end !player->simulation */
232 landrepair(struct lndstr *land, struct natstr *np,
240 int mil_needed, lcm_needed, hcm_needed, gun_needed, shell_needed;
246 lp = &lchr[(int)land->lnd_type];
247 sp = getsectp(land->lnd_x, land->lnd_y);
251 if (np->nat_level[NAT_TLEV] < land->lnd_tech * 0.85)
254 if (land->lnd_effic == 100) {
255 /* land is ok; no repairs needed */
258 if (sp->sct_own != land->lnd_own)
261 if (!player->simulation)
262 avail = sp->sct_avail * 100;
264 avail = gt_bg_nmbr(bp, sp, I_MAX + 1) * 100;
266 w_p_eff = LND_BLD_WORK(lp->l_lcm, lp->l_hcm);
267 delta = roundavg((double)avail / w_p_eff);
270 if (delta > (int)((float)etus * land_grow_scale))
271 delta = (int)((float)etus * land_grow_scale);
273 /* delta is the max amount we can grow */
275 left = 100 - land->lnd_effic;
279 leftp = ((float)left / 100.0);
281 memset(mvec, 0, sizeof(mvec));
282 mvec[I_LCM] = lcm_needed = ldround((double)(lp->l_lcm * leftp), 1);
283 mvec[I_HCM] = hcm_needed = ldround((double)(lp->l_hcm * leftp), 1);
285 mvec[I_GUN] = gun_needed = ldround((double)(lp->l_gun * leftp),1);
286 mvec[I_MILIT] = mil_needed = ldround((double)(lp->l_mil * leftp),1);
287 mvec[I_SHELL] = shell_needed = ldround((double)(lp->l_shell *leftp),1);
289 mvec[I_GUN] = gun_needed = 0;
290 mvec[I_MILIT] = mil_needed = 0;
291 mvec[I_SHELL] = shell_needed = 0;
293 get_materials(sp, bp, mvec, 0);
295 if (mvec[I_MILIT] >= mil_needed)
298 buildp = ((float)mvec[I_MILIT] / (float)lp->l_mil);
299 if (mvec[I_LCM] < lcm_needed)
300 buildp = MIN(buildp, ((float)mvec[I_LCM] / (float)lp->l_lcm));
301 if (mvec[I_HCM] < hcm_needed)
302 buildp = MIN(buildp, ((float)mvec[I_HCM] / (float)lp->l_hcm));
303 if (mvec[I_GUN] < gun_needed)
304 buildp = MIN(buildp, ((float)mvec[I_GUN] / (float)lp->l_gun));
305 if (mvec[I_SHELL] < shell_needed)
306 buildp = MIN(buildp, ((float)mvec[I_SHELL] / (float)lp->l_shell));
308 build = ldround((double)(buildp * 100.0), 1);
310 memset(mvec, 0, sizeof(mvec));
311 mvec[I_LCM] = lcm_needed = roundavg((double)(lp->l_lcm * buildp));
312 mvec[I_HCM] = hcm_needed = roundavg((double)(lp->l_hcm * buildp));
314 mvec[I_GUN] = gun_needed = roundavg((double)(lp->l_gun * buildp));
315 mvec[I_MILIT] = mil_needed = roundavg((double)(lp->l_mil * buildp));
316 mvec[I_SHELL] = shell_needed = roundavg((double)(lp->l_shell *buildp));
318 mvec[I_GUN] = gun_needed = 0;
319 mvec[I_MILIT] = mil_needed = 0;
320 mvec[I_SHELL] = shell_needed = 0;
321 mil_dbl_pay += mil_needed;
323 get_materials(sp, bp, mvec, 1);
325 if ((sp->sct_type != SCT_HEADQ) && (sp->sct_type != SCT_FORTR))
328 avail -= build * w_p_eff;
329 if (!player->simulation) {
330 sp->sct_avail = avail / 100;
331 if (sp->sct_avail < 0)
334 pt_bg_nmbr(bp, sp, I_MAX + 1, avail / 100);
335 if (gt_bg_nmbr(bp, sp, I_MAX + 1) < 0)
336 pt_bg_nmbr(bp, sp, I_MAX + 1, 0);
340 logerror("land unit %d building %d ! \n", land->lnd_uid, build);
341 np->nat_money -= mult * lp->l_cost * build / 100.0;
342 if (!player->simulation) {
343 land->lnd_effic += (s_char)build;
351 * returns the number who starved, if any.
354 feed_land(struct lndstr *lp, int etus, int *needed, int doit)
356 double food_eaten, ship_eaten;
365 return 0; /* no food no work to be done */
367 total_people = total_mil(lp);
368 food_eaten = etus * eatrate * total_people;
369 ifood_eaten = (int)food_eaten;
370 if (food_eaten - ifood_eaten > 0)
376 * If we're on a ship, and we don't have enough food,
377 * get some food off the carrying ship. (Don't starve
380 /* doit - Only try to take food off the ship during the update */
381 if (ifood_eaten > lp->lnd_item[I_FOOD] && lp->lnd_ship >= 0 && doit) {
382 need = ifood_eaten - lp->lnd_item[I_FOOD];
383 sp = getshipp(lp->lnd_ship);
384 ship_eaten = etus * eatrate * (sp->shp_item[I_CIVIL]
385 + sp->shp_item[I_MILIT]
386 + sp->shp_item[I_UW]);
387 if (sp->shp_item[I_FOOD] - need > ship_eaten) {
388 lp->lnd_item[I_FOOD] += need;
389 sp->shp_item[I_FOOD] -= need;
390 } else if (sp->shp_item[I_FOOD] - ship_eaten > 0) {
391 lp->lnd_item[I_FOOD] += sp->shp_item[I_FOOD] - ship_eaten;
392 sp->shp_item[I_FOOD] -= sp->shp_item[I_FOOD] - ship_eaten;
396 if (ifood_eaten > lp->lnd_item[I_FOOD]) {
397 *needed = ifood_eaten - lp->lnd_item[I_FOOD];
398 people_left = (lp->lnd_item[I_FOOD] + 0.01) / (food_eaten + 0.01);
399 /* only want to starve off at most 1/2 the populace. */
400 if (people_left < 0.5)
402 starved = total_people * (1 - people_left);
403 lp->lnd_item[I_MILIT] -= starved;
404 lp->lnd_item[I_FOOD] = 0;
406 lp->lnd_item[I_FOOD] -= (int)food_eaten;