Add proper links so that - and -sh are catered for.
[unix-history] / games / sail / game.c
CommitLineData
15637ed4
RG
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
35static char sccsid[] = "@(#)game.c 5.4 (Berkeley) 6/1/90";
36#endif /* not lint */
37
38#include "externs.h"
39
40maxturns(ship, af)
41register struct ship *ship;
42char *af;
43{
44 register int turns;
45
46 turns = ship->specs->ta;
47 if (*af = (ship->file->drift > 1 && turns)) {
48 turns--;
49 if (ship->file->FS == 1)
50 turns = 0;
51 }
52 return turns;
53}
54
55maxmove(ship, dir, fs)
56register struct ship *ship;
57int dir, fs;
58{
59 register int riggone = 0, Move, flank = 0;
60
61 Move = ship->specs->bs;
62 if (!ship->specs->rig1)
63 riggone++;
64 if (!ship->specs->rig2)
65 riggone++;
66 if (!ship->specs->rig3)
67 riggone++;
68 if (!ship->specs->rig4)
69 riggone++;
70 if ((ship->file->FS || fs) && fs != -1) {
71 flank = 1;
72 Move = ship->specs->fs;
73 }
74 if (dir == winddir)
75 Move -= 1 + WET[windspeed][ship->specs->class-1].B;
76 else if (dir == winddir + 2 || dir == winddir - 2 || dir == winddir - 6 || dir == winddir + 6)
77 Move -= 1 + WET[windspeed][ship->specs->class-1].C;
78 else if (dir == winddir + 3 || dir == winddir - 3 || dir == winddir - 5 || dir == winddir + 5)
79 Move = (flank ? 2 : 1) - WET[windspeed][ship->specs->class-1].D;
80 else if (dir == winddir + 4 || dir == winddir - 4)
81 Move = 0;
82 else
83 Move -= WET[windspeed][ship->specs->class-1].A;
84 Move -= riggone;
85 Move = Move < 0 ? 0 : Move;
86 return(Move);
87}