Generally use NULL instead of explicitly casting 0 to some pointer type.
[dragonfly.git] / games / sail / pl_2.c
1 /*
2  * Copyright (c) 1983, 1993
3  *      The Regents of the University of California.  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  * @(#)pl_2.c   8.1 (Berkeley) 5/31/93
34  * $FreeBSD: src/games/sail/pl_2.c,v 1.4 1999/11/30 03:49:36 billf Exp $
35  * $DragonFly: src/games/sail/pl_2.c,v 1.3 2006/09/03 17:33:13 pavalos Exp $
36  */
37
38 #include "player.h"
39
40 void
41 play(void)
42 {
43         struct ship *sp;
44
45         for (;;) {
46                 switch (sgetch("~\b", NULL, 0)) {
47                 case 'm':
48                         acceptmove();
49                         break;
50                 case 's':
51                         acceptsignal();
52                         break;
53                 case 'g':
54                         grapungrap();
55                         break;
56                 case 'u':
57                         unfoulplayer();
58                         break;
59                 case 'v':
60                         Signal("%s", NULL, version);
61                         break;
62                 case 'b':
63                         acceptboard();
64                         break;
65                 case 'f':
66                         acceptcombat();
67                         break;
68                 case 'l':
69                         loadplayer();
70                         break;
71                 case 'c':
72                         changesail();
73                         break;
74                 case 'r':
75                         repair();
76                         break;
77                 case 'B':
78                         Signal("'Hands to stations!'", NULL);
79                         unboard(ms, ms, 1);     /* cancel DBP's */
80                         unboard(ms, ms, 0);     /* cancel offense */
81                         break;
82                 case '\f':
83                         centerview();
84                         blockalarm();
85                         draw_board();
86                         draw_screen();
87                         unblockalarm();
88                         break;
89                 case 'L':
90                         mf->loadL = L_EMPTY;
91                         mf->loadR = L_EMPTY;
92                         mf->readyL = R_EMPTY;
93                         mf->readyR = R_EMPTY;
94                         Signal("Broadsides unloaded", NULL);
95                         break;
96                 case 'q':
97                         Signal("Type 'Q' to quit", NULL);
98                         break;
99                 case 'Q':
100                         leave(LEAVE_QUIT);
101                         break;
102                 case 'I':
103                         foreachship(sp)
104                                 if (sp != ms)
105                                         eyeball(sp);
106                         break;
107                 case 'i':
108                         if ((sp = closestenemy(ms, 0, 1)) == 0)
109                                 Signal("No more ships left.", NULL);
110                         else
111                                 eyeball(sp);
112                         break;
113                 case 'C':
114                         centerview();
115                         blockalarm();
116                         draw_view();
117                         unblockalarm();
118                         break;
119                 case 'U':
120                         upview();
121                         blockalarm();
122                         draw_view();
123                         unblockalarm();
124                         break;
125                 case 'D':
126                 case 'N':
127                         downview();
128                         blockalarm();
129                         draw_view();
130                         unblockalarm();
131                         break;
132                 case 'H':
133                         leftview();
134                         blockalarm();
135                         draw_view();
136                         unblockalarm();
137                         break;
138                 case 'J':
139                         rightview();
140                         blockalarm();
141                         draw_view();
142                         unblockalarm();
143                         break;
144                 case 'F':
145                         lookout();
146                         break;
147                 case 'S':
148                         dont_adjust = !dont_adjust;
149                         blockalarm();
150                         draw_turn();
151                         unblockalarm();
152                         break;
153                 }
154         }
155 }