82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2006, 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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* nxtsct.c: Select/get the next sector from a range of sectors
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*
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* Known contributors to this file:
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* Dave Pare, 1989
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*/
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#include <config.h>
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#include "misc.h"
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#include "xy.h"
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#include "sect.h"
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#include "nsc.h"
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#include "file.h"
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#include "prototypes.h"
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#include "optlist.h"
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/*
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* get the next sector in the range
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* that matches the conditions.
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*/
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int
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nxtsct(struct nstr_sect *np, struct sctstr *sp)
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{
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while (1) {
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np->dx++;
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np->x++;
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if (np->x >= WORLD_X)
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np->x = 0;
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if (np->dx >= np->range.width) {
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np->dx = 0;
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np->x = np->range.lx;
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np->dy++;
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if (np->dy >= np->range.height)
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return 0;
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np->y++;
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if (np->y >= WORLD_Y)
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np->y = 0;
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}
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if ((np->y + np->x) & 01)
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continue;
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if (np->type == NS_DIST) {
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np->curdist = mapdist(np->x, np->y, np->cx, np->cy);
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if (np->curdist > np->dist)
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continue;
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}
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np->id = sctoff(np->x, np->y);
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if (!np->read(EF_SECTOR, np->id, sp))
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continue;
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if (np->ncond == 0)
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return 1;
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if (nstr_exec(np->cond, np->ncond, sp))
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return 1;
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}
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/*NOTREACHED*/
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}
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