Home | History | Annotate | Line # | Download | only in sail
game.c revision 1.8 
      1 /*	$NetBSD: game.c,v 1.8 2001/01/04 01:53:24 jwise Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)game.c	8.2 (Berkeley) 4/28/95";
     40 #else
     41 __RCSID("$NetBSD: game.c,v 1.8 2001/01/04 01:53:24 jwise Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include "extern.h"
     46 
     47 int	maxturns(struct ship *, char *);
     48 int	maxmove(struct ship *, int, int);
     49 
     50 int
     51 maxturns(struct ship *ship, char *af)
     52 {
     53 	int turns;
     54 
     55 	turns = ship->specs->ta;
     56 	*af = (ship->file->drift > 1 && turns);
     57 	if (*af != '\0') {
     58 		turns--;
     59 		if (ship->file->FS == 1)
     60 			turns = 0;
     61 	}
     62 	return turns;
     63 }
     64 
     65 int
     66 maxmove(struct ship *ship, int dir, int fs)
     67 {
     68 	int riggone = 0, Move, flank = 0;
     69 
     70 	Move = ship->specs->bs;
     71 	if (!ship->specs->rig1)
     72 		riggone++;
     73 	if (!ship->specs->rig2)
     74 		riggone++;
     75 	if (!ship->specs->rig3)
     76 		riggone++;
     77 	if (!ship->specs->rig4)
     78 		riggone++;
     79 	if ((ship->file->FS || fs) && fs != -1) {
     80 		flank = 1;
     81 		Move = ship->specs->fs;
     82 	}
     83 	if (dir == winddir)
     84 		Move -= 1 + WET[windspeed][ship->specs->class-1].B;
     85 	else if (dir == winddir + 2 || dir == winddir - 2 || dir == winddir - 6 || dir == winddir + 6)
     86 		Move -= 1 + WET[windspeed][ship->specs->class-1].C;
     87 	else if (dir == winddir + 3 || dir == winddir - 3 || dir == winddir - 5 || dir == winddir + 5)
     88 		Move = (flank ? 2 : 1) - WET[windspeed][ship->specs->class-1].D;
     89 	else if (dir == winddir + 4 || dir == winddir - 4)
     90 		Move = 0;
     91 	else
     92 		Move -= WET[windspeed][ship->specs->class-1].A;
     93 	Move -= riggone;
     94 	Move = Move < 0 ? 0 : Move;
     95 	return(Move);
     96 }
     97