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      1 /*	$NetBSD: dr_5.c,v 1.15 2023/08/01 07:04:15 mrg 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)dr_5.c	8.2 (Berkeley) 4/28/95";
     36 #else
     37 __RCSID("$NetBSD: dr_5.c,v 1.15 2023/08/01 07:04:15 mrg Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <sys/types.h>
     42 #include "extern.h"
     43 
     44 void
     45 subtract(struct ship *from, struct ship *fromcap, int totalfrom, int crewfrom[3],
     46 	 int pcfrom)
     47 {
     48 	int n;
     49 
     50 	if (fromcap == from && totalfrom) {		/* if not captured */
     51 		for (n = 0; n < 3; n++) {
     52 			if (totalfrom > crewfrom[n]) {
     53 				totalfrom -= crewfrom[n];
     54 				crewfrom[n] = 0;
     55 			} else {
     56 				crewfrom[n] -= totalfrom;
     57 				totalfrom = 0;
     58 			}
     59 		}
     60 		send_crew(from, crewfrom[0], crewfrom[1], crewfrom[2]);
     61 	} else if (totalfrom) {
     62 		pcfrom -= totalfrom;
     63 		pcfrom = pcfrom < 0 ? 0 : pcfrom;
     64 		send_pcrew(from, pcfrom);
     65 	}
     66 }
     67 
     68 int
     69 mensent(struct ship *from, struct ship *to, int crew[3], struct ship **captured,
     70 	int *pc, int isdefense)
     71 {					/* returns # of crew squares sent */
     72 	int men = 0;
     73 	int n;
     74 	int c1, c2, c3;
     75 	struct BP *bp;
     76 
     77 	*pc = from->file->pcrew;
     78 	*captured = from->file->captured;
     79 	crew[0] = from->specs->crew1;
     80 	crew[1] = from->specs->crew2;
     81 	crew[2] = from->specs->crew3;
     82 	bp = isdefense ? from->file->DBP : from->file->OBP;
     83 	for (n=0; n < NBP; n++, bp++) {
     84 		if (bp->turnsent && bp->toship == to)
     85 			men += bp->mensent;
     86 	}
     87 	if (men) {
     88 		c1 = men/100 ? crew[0] : 0;
     89 		c2 = (men%100)/10 ? crew[1] : 0;
     90 		c3 = men/10 ? crew[2] : 0;
     91 		c3 = *captured == 0 ? crew[2] : *pc;
     92 	} else
     93 		c1 = c2 = c3 = 0;
     94 	return(c1 + c2 + c3);
     95 }
     96