1 /* $NetBSD: game.c,v 1.13 2009/03/14 20:04:43 dholland 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[] = "@(#)game.c 8.2 (Berkeley) 4/28/95";
36 #else
37 __RCSID("$NetBSD: game.c,v 1.13 2009/03/14 20:04:43 dholland Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <sys/types.h>
42 #include <stdbool.h>
43 #include "extern.h"
44
45 int
maxturns(struct ship * ship,bool * af)46 maxturns(struct ship *ship, bool *af)
47 {
48 int turns;
49
50 turns = ship->specs->ta;
51 *af = (ship->file->drift > 1 && turns);
52 if (*af != false) {
53 turns--;
54 if (ship->file->FS == 1)
55 turns = 0;
56 }
57 return turns;
58 }
59
60 int
maxmove(struct ship * ship,int dir,int fs)61 maxmove(struct ship *ship, int dir, int fs)
62 {
63 int riggone = 0, Move, flank = 0;
64
65 Move = ship->specs->bs;
66 if (!ship->specs->rig1)
67 riggone++;
68 if (!ship->specs->rig2)
69 riggone++;
70 if (!ship->specs->rig3)
71 riggone++;
72 if (!ship->specs->rig4)
73 riggone++;
74 if ((ship->file->FS || fs) && fs != -1) {
75 flank = 1;
76 Move = ship->specs->fs;
77 }
78 if (dir == winddir)
79 Move -= 1 + WET[windspeed][ship->specs->class-1].B;
80 else if (dir == winddir + 2 || dir == winddir - 2 ||
81 dir == winddir - 6 || dir == winddir + 6)
82 Move -= 1 + WET[windspeed][ship->specs->class-1].C;
83 else if (dir == winddir + 3 || dir == winddir - 3 ||
84 dir == winddir - 5 || dir == winddir + 5)
85 Move = (flank ? 2 : 1) - WET[windspeed][ship->specs->class-1].D;
86 else if (dir == winddir + 4 || dir == winddir - 4)
87 Move = 0;
88 else
89 Move -= WET[windspeed][ship->specs->class-1].A;
90 Move -= riggone;
91 Move = Move < 0 ? 0 : Move;
92 return(Move);
93 }
94