Markus Armbruster
8718a9428a
This could make production command mispredict resource-depleting level production. Stock game is not affected. In fact, such a product would be highly unusual.
354 lines
8.6 KiB
C
354 lines
8.6 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2009, 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 files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* prod.c: Calculate production levels
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*
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* Known contributors to this file:
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* David Muir Sharnoff, 1987
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* Steve McClure, 1997-2000
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* Markus Armbruster, 2004-2008
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*/
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#include <config.h>
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#include "commands.h"
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#include "item.h"
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#include "optlist.h"
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#include "product.h"
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static void prprod(coord, coord, int, double, double, int, char,
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double, double, double, char[], int[], int[], int);
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int
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count_pop(int n)
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{
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int i;
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int pop = 0;
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struct sctstr *sp;
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for (i = 0; NULL != (sp = getsectid(i)); i++) {
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if (sp->sct_own != n)
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continue;
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if (sp->sct_oldown != n)
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continue;
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pop += sp->sct_item[I_CIVIL];
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}
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return pop;
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}
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int
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prod(void)
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{
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struct natstr *natp;
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struct sctstr sect;
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struct nstr_sect nstr;
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struct pchrstr *pp;
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double p_e;
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double maxr; /* floating version of max */
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double prodeff;
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double real; /* floating pt version of act */
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int work;
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int totpop;
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int act; /* actual production */
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double cost;
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int i;
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int max; /* production w/infinite materials */
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int nsect;
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double take;
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double mtake;
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int there;
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int unit_work; /* sum of component amounts */
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int used; /* production w/infinite workforce */
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i_type it;
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i_type vtype;
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unsigned char *resource;
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char cmnem[MAXPRCON];
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int cuse[MAXPRCON], cmax[MAXPRCON];
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int lcms, hcms;
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int civs;
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int uws;
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int bwork;
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int twork;
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int type;
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int eff;
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int maxpop;
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int otype;
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char mnem;
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if (!snxtsct(&nstr, player->argp[1]))
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return RET_SYN;
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player->simulation = 1;
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prdate();
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nsect = 0;
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while (nxtsct(&nstr, §)) {
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if (!player->owner)
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continue;
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civs = (1.0 + obrate * etu_per_update) * sect.sct_item[I_CIVIL];
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uws = (1.0 + uwbrate * etu_per_update) * sect.sct_item[I_UW];
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natp = getnatp(sect.sct_own);
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maxpop = max_pop(natp->nat_level[NAT_RLEV], §);
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work = new_work(§,
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total_work(sect.sct_work, etu_per_update,
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civs, sect.sct_item[I_MILIT], uws,
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maxpop));
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bwork = work / 2;
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if (sect.sct_off)
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continue;
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type = sect.sct_type;
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eff = sect.sct_effic;
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if (sect.sct_newtype != type) {
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twork = (eff + 3) / 4;
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if (twork > bwork) {
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twork = bwork;
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}
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bwork -= twork;
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eff -= twork * 4;
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otype = type;
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if (eff <= 0) {
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type = sect.sct_newtype;
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eff = 0;
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}
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if (!eff && IS_BIG_CITY(otype) && !IS_BIG_CITY(type)) {
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natp = getnatp(sect.sct_own);
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maxpop = max_population(natp->nat_level[NAT_RLEV],
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type, eff);
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work = new_work(§,
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total_work(sect.sct_work, etu_per_update,
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civs, sect.sct_item[I_MILIT],
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uws, maxpop));
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bwork = MIN(work / 2, bwork);
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}
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twork = 100 - eff;
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if (twork > bwork) {
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twork = bwork;
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}
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if (dchr[type].d_lcms > 0) {
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lcms = sect.sct_item[I_LCM];
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lcms /= dchr[type].d_lcms;
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if (twork > lcms)
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twork = lcms;
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}
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if (dchr[type].d_hcms > 0) {
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hcms = sect.sct_item[I_HCM];
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hcms /= dchr[type].d_hcms;
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if (twork > hcms)
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twork = hcms;
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}
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bwork -= twork;
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eff += twork;
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} else if (eff < 100) {
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twork = 100 - eff;
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if (twork > bwork) {
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twork = bwork;
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}
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bwork -= twork;
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eff += twork;
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}
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work = (work + 1) / 2 + bwork;
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if (eff < 60)
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continue;
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p_e = eff / 100.0;
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if (p_e > 1.0)
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p_e = 1.0;
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if (type == SCT_ENLIST) {
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int maxmil;
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int enlisted;
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if (sect.sct_own != sect.sct_oldown)
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continue;
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civs = (1.0 + obrate * etu_per_update) * sect.sct_item[I_CIVIL];
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natp = getnatp(sect.sct_own);
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maxpop = max_pop(natp->nat_level[NAT_RLEV], §);
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civs = MIN(civs, maxpop);
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enlisted = 0;
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maxmil = (civs / 2) - sect.sct_item[I_MILIT];
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if (maxmil > 0) {
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enlisted = (etu_per_update
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* (10 + sect.sct_item[I_MILIT])
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* 0.05);
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if (enlisted > maxmil)
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enlisted = maxmil;
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}
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if (enlisted < 0)
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enlisted = 0;
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prprod(sect.sct_x, sect.sct_y, type, p_e, 1.0, work,
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ichr[I_MILIT].i_mnem, enlisted, maxmil, enlisted * 3,
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"c\0\0", &enlisted, &enlisted, nsect++);
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continue;
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}
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if (dchr[type].d_prd < 0)
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continue;
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unit_work = 0;
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pp = &pchr[dchr[type].d_prd];
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vtype = pp->p_type;
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if (pp->p_nrndx)
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resource = (unsigned char *)§ + pp->p_nrndx;
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else
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resource = NULL;
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natp = getnatp(sect.sct_own);
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/*
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* sect p_e (inc improvements)
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*/
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if (resource) {
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unit_work++;
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p_e *= *resource / 100.0;
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}
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/*
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* production effic.
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*/
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prodeff = prod_eff(type, natp->nat_level[pp->p_nlndx]);
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/*
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* raw material limit
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*/
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used = 9999;
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for (i = 0; i < MAXPRCON; ++i) {
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it = pp->p_ctype[i];
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if (!pp->p_camt[i])
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continue;
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if (CANT_HAPPEN(it <= I_NONE || I_MAX < it))
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continue;
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used = MIN(used, sect.sct_item[it] / pp->p_camt[i]);
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unit_work += pp->p_camt[i];
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}
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if (unit_work == 0)
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unit_work = 1;
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/*
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* is production limited by resources or
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* workforce?
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*/
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max = (int)(work * p_e / (double)unit_work + 0.5);
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if (resource && pp->p_nrdep != 0) {
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if (*resource * 100 < pp->p_nrdep * max)
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max = *resource * 100 / pp->p_nrdep;
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}
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act = MIN(used, max);
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real = (double)act * prodeff;
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maxr = (double)max * prodeff;
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if (vtype != I_NONE) {
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real = MIN(999.0, real);
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maxr = MIN(999.0, maxr);
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if (real < 0.0)
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real = 0.0;
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/* production backlog? */
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there = MIN(ITEM_MAX, sect.sct_item[vtype]);
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real = MIN(real, ITEM_MAX - there);
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}
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if (prodeff != 0) {
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take = real / prodeff;
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mtake = maxr / prodeff;
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} else
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mtake = take = 0.0;
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cost = take * pp->p_cost;
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if (opt_TECH_POP) {
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if (pp->p_level == NAT_TLEV) {
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totpop = count_pop(sect.sct_own);
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if (totpop > 50000)
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cost *= totpop / 50000.0;
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}
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}
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for (i = 0; i < MAXPRCON; ++i) {
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cmnem[i] = cuse[i] = cmax[i] = 0;
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if (!pp->p_camt[i])
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continue;
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it = pp->p_ctype[i];
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if (CANT_HAPPEN(it <= I_NONE || I_MAX < it))
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continue;
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cmnem[i] = ichr[it].i_mnem;
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cuse[i] = (int)(take * pp->p_camt[i] + 0.5);
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cmax[i] = (int)(mtake * pp->p_camt[i] + 0.5);
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}
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if (pp->p_type != I_NONE)
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mnem = ichr[vtype].i_mnem;
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else if (pp->p_level == NAT_TLEV || pp->p_level == NAT_RLEV)
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mnem = '.';
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else
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mnem = 0;
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prprod(sect.sct_x, sect.sct_y, type, p_e, prodeff, work,
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mnem, real, maxr, cost,
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cmnem, cuse, cmax, nsect++);
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}
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player->simulation = 0;
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if (nsect == 0) {
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if (player->argp[1])
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pr("%s: No sector(s)\n", player->argp[1]);
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else
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pr("%s: No sector(s)\n", "");
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return RET_FAIL;
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} else
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pr("%d sector%s\n", nsect, splur(nsect));
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return RET_OK;
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}
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static void
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prprod(coord x, coord y, int type, double p_e, double prodeff, int work,
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char mnem, double make, double max, double cost,
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char cmnem[], int cuse[], int cmax[], int nsect)
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{
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int i;
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if (nsect == 0) {
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pr("PRODUCTION SIMULATION\n");
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pr(" sect des eff avail make p.e. cost use1 use2 use3 max1 max2 max3 max\n");
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}
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prxy("%4d,%-4d", x, y, player->cnum);
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pr(" %c %3.0f%% %5d", dchr[type].d_mnem, p_e * 100.0, work);
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if (mnem == '.')
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pr(" %5.2f", make);
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else
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pr(" %4.0f%c", make, mnem ? mnem : ' ');
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pr(" %.2f $%-5.0f", prodeff, cost);
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for (i = 0; i < 3; i++) {
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if (i < MAXPRCON && cmnem[i])
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pr("%4d%c", cuse[i], cmnem[i]);
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else
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pr(" ");
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}
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pr(" ");
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for (i = 0; i < 3; i++) {
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if (i < MAXPRCON && cmnem[i])
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pr("%4d%c", cmax[i], cmnem[i]);
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else
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pr(" ");
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}
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if (mnem == '.')
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pr(" %5.2f\n", max);
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else
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pr(" %5.0f\n", max);
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}
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