HAMMER Utilities: Update for HAMMER changes.
[dragonfly.git] / games / sail / game.c
blob73f9de4c48a33d4792896dd1886ec80a9484fc20
1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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.
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.
33 * @(#)game.c 8.1 (Berkeley) 5/31/93
34 * $FreeBSD: src/games/sail/game.c,v 1.5 1999/11/30 03:49:33 billf Exp $
35 * $DragonFly: src/games/sail/game.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
38 #include "externs.h"
40 int
41 maxturns(struct ship *ship, char *af)
43 int turns;
45 turns = ship->specs->ta;
46 if ((*af = (ship->file->drift > 1 && turns))) {
47 turns--;
48 if (ship->file->FS == 1)
49 turns = 0;
51 return turns;
54 int
55 maxmove(struct ship *ship, int dir, int fs)
57 int riggone = 0, Move, flank = 0;
59 Move = ship->specs->bs;
60 if (!ship->specs->rig1)
61 riggone++;
62 if (!ship->specs->rig2)
63 riggone++;
64 if (!ship->specs->rig3)
65 riggone++;
66 if (!ship->specs->rig4)
67 riggone++;
68 if ((ship->file->FS || fs) && fs != -1) {
69 flank = 1;
70 Move = ship->specs->fs;
72 if (dir == winddir)
73 Move -= 1 + WET[windspeed][ship->specs->class-1].B;
74 else if (dir == winddir + 2 || dir == winddir - 2 || dir == winddir - 6 || dir == winddir + 6)
75 Move -= 1 + WET[windspeed][ship->specs->class-1].C;
76 else if (dir == winddir + 3 || dir == winddir - 3 || dir == winddir - 5 || dir == winddir + 5)
77 Move = (flank ? 2 : 1) - WET[windspeed][ship->specs->class-1].D;
78 else if (dir == winddir + 4 || dir == winddir - 4)
79 Move = 0;
80 else
81 Move -= WET[windspeed][ship->specs->class-1].A;
82 Move -= riggone;
83 Move = Move < 0 ? 0 : Move;
84 return(Move);