Markus Armbruster
5d302eaad5
double-remainder problem: x-coordinate SHRT_MAX+1 is truncated to 0 by cast to coord, then converted by xabs(). This is wrong unless WORLD_X divides SHRT_MAX+1. (sarg_xy, sarg_getrange, sarg_range): Use them. (inputxy): No longer used, remove. (sarg_type): Use NS_UNDEF instead of 0. (sarg_list): Change confusing loop control. Properly diagnose overlong lists; used to silently ignore list tail and return MAX+1, which made a later snxtitem_list() fail. (atoip): No longer used, remove. Parsing was broken anyway. (sarg_type, sarg_xy, sarg_area, sarg_range, sarg_list, sarg_getrange): Use plain char * instead of s_char *.
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*
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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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* xy.h: Constants having to do with world locations.
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*
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* Known contributors to this file:
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* Steve McClure, 1998
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*/
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#ifndef _XY_H_
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#define _XY_H_
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#include "sect.h"
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#include "nat.h"
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/* Used to calculate an offset into an array. Used for
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dynamically sizing the world. */
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#define XYOFFSET(x, y) ((y * WORLD_X) + x)
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#define XNORM(x) (((x)<0) ? ((WORLD_X-(-(x)%WORLD_X))%WORLD_X) : ((x)%WORLD_X))
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#define YNORM(y) (((y)<0) ? ((WORLD_Y-(-(y)%WORLD_Y))%WORLD_Y) : ((y)%WORLD_Y))
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struct range {
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coord lx; /* low-range x,y */
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coord ly;
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coord hx; /* high-range x,y */
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coord hy;
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int width; /* range width, height */
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int height;
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};
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extern s_char *xyas(coord x, coord y, natid country);
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extern s_char *ownxy(struct sctstr *sp);
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extern coord xrel(struct natstr *np, coord absx);
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extern coord yrel(struct natstr *np, coord absy);
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extern void xyrelrange(struct natstr *np, struct range *src,
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struct range *dst);
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extern void xyabsrange(struct natstr *np, struct range *src,
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struct range *dst);
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extern coord strtox(char *str, char **end);
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extern coord strtoy(char *str, char **end);
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extern coord xabs(struct natstr *np, coord relx);
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extern coord yabs(struct natstr *np, coord rely);
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extern coord xnorm(register coord x);
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extern coord ynorm(register coord y);
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extern int xyinrange(coord x, coord y, struct range *rp);
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#endif /* _XY_H_ */
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