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dr_5.c revision 1.9 
      1 /*	$NetBSD: dr_5.c,v 1.9 2001/01/04 03:51:23 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[] = "@(#)dr_5.c	8.2 (Berkeley) 4/28/95";
     40 #else
     41 __RCSID("$NetBSD: dr_5.c,v 1.9 2001/01/04 03:51:23 jwise Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/types.h>
     46 #include "extern.h"
     47 
     48 void	subtract(struct ship *, int, int *, struct ship *, int);
     49 int	mensent(struct ship *, struct ship *, int *, struct ship **, int *, int);
     50 
     51 void
     52 subtract(struct ship *from, int totalfrom, int *crewfrom, struct ship *fromcap, int pcfrom)
     53 {
     54 	int n;
     55 
     56 	if (fromcap == from && totalfrom) {		/* if not captured */
     57 		for (n = 0; n < 3; n++) {
     58 			if (totalfrom > crewfrom[n]) {
     59 				totalfrom -= crewfrom[n];
     60 				crewfrom[n] = 0;
     61 			} else {
     62 				crewfrom[n] -= totalfrom;
     63 				totalfrom = 0;
     64 			}
     65 		}
     66 		Write(W_CREW, from, crewfrom[0], crewfrom[1], crewfrom[2], 0);
     67 	} else if (totalfrom) {
     68 		pcfrom -= totalfrom;
     69 		pcfrom = pcfrom < 0 ? 0 : pcfrom;
     70 		Write(W_PCREW, from, pcfrom, 0, 0, 0);
     71 	}
     72 }
     73 
     74 int
     75 mensent(struct ship *from, struct ship *to, int *crew, struct ship **captured, int *pc, int isdefense)
     76 {					/* returns # of crew squares sent */
     77 	int men = 0;
     78 	int n;
     79 	int c1, c2, c3;
     80 	struct BP *bp;
     81 
     82 	*pc = from->file->pcrew;
     83 	*captured = from->file->captured;
     84 	crew[0] = from->specs->crew1;
     85 	crew[1] = from->specs->crew2;
     86 	crew[2] = from->specs->crew3;
     87 	bp = isdefense ? from->file->DBP : from->file->OBP;
     88 	for (n=0; n < NBP; n++, bp++) {
     89 		if (bp->turnsent && bp->toship == to)
     90 			men += bp->mensent;
     91 	}
     92 	if (men) {
     93 		c1 = men/100 ? crew[0] : 0;
     94 		c2 = (men%100)/10 ? crew[1] : 0;
     95 		c3 = men/10 ? crew[2] : 0;
     96 		c3 = *captured == 0 ? crew[2] : *pc;
     97 	} else
     98 		c1 = c2 = c3 = 0;
     99 	return(c1 + c2 + c3);
    100 }
    101