Import of Empire 4.2.12
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src/lib/update/distribute.c
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src/lib/update/distribute.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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* distribute.c: Do distribution to sectors
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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* Steve McClure, 1998
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*/
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#include <stdlib.h>
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#include "misc.h"
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#include "var.h"
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#include "nat.h"
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#include "sect.h"
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#include "item.h"
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#include "xy.h"
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#include "path.h"
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#include "file.h"
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#include "distribute.h"
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#include "update.h"
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#include "subs.h"
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#include "common.h"
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int
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dodistribute(struct sctstr *sp, int imex, s_char *path, double dist_i_cost, double dist_e_cost)
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/* import or export? */
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{
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struct sctstr *getdistsp();
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float distpathcost();
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struct ichrstr *ip;
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struct sctstr *dist;
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int amt;
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int thresh;
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int amt_dist;
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int amt_sect;
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int packing;
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float imcost;
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float excost;
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int dist_packing;
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int diff;
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int item;
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int dists[I_MAX+1];
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int remote[I_MAX+1];
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int local[I_MAX+1];
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int changed;
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int rplague;
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int lplague;
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getvec(VT_ITEM, local, (s_char *)sp, EF_SECTOR);
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if ((sp->sct_dist_x == sp->sct_x) && (sp->sct_dist_y == sp->sct_y))
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return 0;
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if (getvec(VT_DIST, dists, (s_char *)sp, EF_SECTOR) <= 0)
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return 0;
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if (path == (s_char *)0){
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if (sp->sct_own != 0) {
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if (imex == EXPORT) /* only want this once */
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wu(0,sp->sct_own,"No path to dist sector for %s\n",
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ownxy(sp));
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}
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return 0;
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}
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dist = getsectp(sp->sct_dist_x,sp->sct_dist_y);
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if (dist->sct_effic >= 60)
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dist_packing = dchr[dist->sct_type].d_pkg;
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else
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dist_packing = NPKG; /* No packing */
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if (sp->sct_effic >= 60)
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packing = dchr[sp->sct_type].d_pkg;
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else
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packing = NPKG; /* No packing */
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if ((dist->sct_effic >= 60) && dchr[dist->sct_type].d_pkg == WPKG)
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packing = dchr[dist->sct_type].d_pkg;
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getvec(VT_ITEM, remote, (s_char *)dist, EF_SECTOR);
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lplague = rplague = changed = 0;
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for (item = 1; item < I_MAX+1; item++) {
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if (dists[item] == 0)
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continue;
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ip = &ichr[item];
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thresh = dists[item];
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/*
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* calculate costs for importing and exporting.
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* the div 10.0 is because delivering straight through
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* to the dist sect is cheaper than stopping at each
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* sector along the way (processor-timewise)
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*/
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excost = (dist_e_cost/ip->i_pkg[packing] * ip->i_lbs) / 10.0;
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imcost = (dist_i_cost/ip->i_pkg[dist_packing] *ip->i_lbs)/10.0;
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amt_sect = local[item];
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amt_dist = remote[item];
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diff = amt_sect - thresh;
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if (item == I_CIVIL)
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if (sp->sct_own != sp->sct_oldown)
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continue;
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if (item == I_CIVIL)
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if (dist->sct_own != dist->sct_oldown)
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continue;
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if (diff < 0){
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if (imex != IMPORT)
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continue;
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if (!military_control(dist))
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continue;
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diff = -diff;
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/*
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* import.
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* don't import if no mobility.
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* check to make sure have enough mobility in the
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* dist sector to import what we need.
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*/
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if (dist->sct_mobil <= 0) {
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/*logerror(" dist mobil < 0");*/
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continue;
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}
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amt = diff;
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if (item == I_CIVIL)
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amt_dist--; /* Don't send your last civ */
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if (amt_dist < amt) {
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amt = amt_dist;
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if (amt_dist == 0)
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continue;
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}
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if (dist->sct_mobil < imcost * amt)
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amt = dist->sct_mobil / imcost;
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lplague++;
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/* XXX replace with vector assign and putvec() */
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remote[item] -= amt;
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changed++;
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dist->sct_mobil -= (int) (imcost * amt);
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local[item] += amt;
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} else {
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if (imex != EXPORT)
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continue;
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if (!military_control(sp))
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continue;
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if ((item == I_CIVIL)&&(sp->sct_work < 100))
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continue;
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if ((item == I_CIVIL)&&(sp->sct_own != sp->sct_oldown))
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continue;
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/*
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* export.
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* don't export if no mobility. check to make sure we
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* have mobility enough to do the right thing.
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* also make sure that there's enough space in the
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* target sector to hold the required amt.
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*/
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if (sp->sct_mobil <= 0) {
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/*logerror(" sp mob is zero");*/
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continue;
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}
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amt = diff;
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if (amt > amt_sect)
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amt = amt_sect;
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if (sp->sct_mobil < excost * amt)
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amt = sp->sct_mobil / excost;
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if (amt + amt_dist > 9999)
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amt = 9999 - amt_dist;
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if (amt == 0)
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continue;
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/* XXX replace with vector assign and putvec() */
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rplague++;
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local[item] -= amt;
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changed++;
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sp->sct_mobil -= (int) (excost * amt);
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remote[item] += amt;
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}
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}
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putvec(VT_ITEM, remote, (s_char *)dist, EF_SECTOR);
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putvec(VT_ITEM, local, (s_char *)sp, EF_SECTOR);
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if (lplague) {
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lplague = getvar(V_PSTAGE, (s_char *)dist, EF_SECTOR);
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if (lplague == PLG_INFECT &&
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getvar(V_PSTAGE, (s_char *)sp, EF_SECTOR) == PLG_HEALTHY) {
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putvar(V_PSTAGE, PLG_EXPOSED, (s_char *)sp, EF_SECTOR);
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}
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}
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if (rplague) {
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rplague = getvar(V_PSTAGE, (s_char *)sp, EF_SECTOR);
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if (rplague == PLG_INFECT &&
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getvar(V_PSTAGE, (s_char *)dist, EF_SECTOR) == PLG_HEALTHY) {
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putvar(V_PSTAGE, PLG_EXPOSED, (s_char *)dist, EF_SECTOR);
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}
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}
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return changed;
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}
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