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Import of Empire 4.2.12

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Markus Armbruster 2003-08-23 12:23:04 +00:00
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/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---
*
* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
* related information and legal notices. It is expected that any future
* projects/authors will amend these files as needed.
*
* ---
*
* xy.h: Constants having to do with world locations.
*
* Known contributors to this file:
* Steve McClure, 1998
*/
#ifndef _XY_H_
#define _XY_H_
#include "sect.h"
#include "nat.h"
/* Used to calculate an offset into an array. Used for
dynamically sizing the world. */
#define XYOFFSET(x, y) ((y * WORLD_X) + x)
#define XNORM(x) (((x)<0) ? ((WORLD_X-(-(x)%WORLD_X))%WORLD_X) : ((x)%WORLD_X))
#define YNORM(y) (((y)<0) ? ((WORLD_Y-(-(y)%WORLD_Y))%WORLD_Y) : ((y)%WORLD_Y))
struct range {
coord lx; /* low-range x,y */
coord ly;
coord hx; /* high-range x,y */
coord hy;
int width; /* range width, height */
int height;
};
extern s_char *xyfmt();
extern s_char *xyas(coord x, coord y, natid country);
extern s_char *ownxy(struct sctstr *sp);
extern coord xrel(struct natstr *np, coord absx);
extern coord yrel(struct natstr *np, coord absy);
extern void xyrelrange(struct natstr *np, struct range *src,struct range *dst);
extern void xyabsrange(struct natstr *np, struct range *src,struct range *dst);
extern void inputxy(coord *xp, coord *yp, natid cn);
extern coord xabs(struct natstr *np, coord relx);
extern coord yabs(struct natstr *np, coord rely);
extern coord xnorm(register coord x);
extern coord ynorm(register coord y);
extern int xyinrange(coord x, coord y, struct range *rp);
#endif /* _XY_H_ */