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dr_5.c revision 1.1 
      1 /*
      2  * Copyright (c) 1983 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)dr_5.c	5.4 (Berkeley) 6/1/90";
     36 #endif /* not lint */
     37 
     38 #include "externs.h"
     39 
     40 subtract(from, totalfrom, crewfrom, fromcap, pcfrom)
     41 struct ship *from, *fromcap;
     42 int pcfrom;
     43 register int  totalfrom, crewfrom[3];
     44 {
     45 	register int n;
     46 
     47 	if (fromcap == from && totalfrom) {		/* if not captured */
     48 		for (n = 0; n < 3; n++) {
     49 			if (totalfrom > crewfrom[n]) {
     50 				totalfrom -= crewfrom[n];
     51 				crewfrom[n] = 0;
     52 			} else {
     53 				crewfrom[n] -= totalfrom;
     54 				totalfrom = 0;
     55 			}
     56 		}
     57 		Write(W_CREW, from, 0, crewfrom[0], crewfrom[1], crewfrom[2], 0);
     58 	} else if (totalfrom) {
     59 		pcfrom -= totalfrom;
     60 		pcfrom = pcfrom < 0 ? 0 : pcfrom;
     61 		Write(W_PCREW, from, 0, pcfrom, 0, 0, 0);
     62 	}
     63 }
     64 
     65 mensent(from, to, crew, captured, pc, isdefense)
     66 struct ship *from, *to, **captured;
     67 int crew[3], *pc;
     68 char isdefense;
     69 {					/* returns # of crew squares sent */
     70 	int men = 0;
     71 	register int n;
     72 	int c1, c2, c3;
     73 	register struct BP *bp;
     74 
     75 	*pc = from->file->pcrew;
     76 	*captured = from->file->captured;
     77 	crew[0] = from->specs->crew1;
     78 	crew[1] = from->specs->crew2;
     79 	crew[2] = from->specs->crew3;
     80 	bp = isdefense ? from->file->DBP : from->file->OBP;
     81 	for (n=0; n < NBP; n++, bp++) {
     82 		if (bp->turnsent && bp->toship == to)
     83 			men += bp->mensent;
     84 	}
     85 	if (men) {
     86 		c1 = men/100 ? crew[0] : 0;
     87 		c2 = (men%100)/10 ? crew[1] : 0;
     88 		c3 = men/10 ? crew[2] : 0;
     89 		c3 = *captured == 0 ? crew[2] : *pc;
     90 	} else
     91 		c1 = c2 = c3 = 0;
     92 	return(c1 + c2 + c3);
     93 }
     94