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1.1 root 1: /*
2: * Copyright (c) 1980 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted provided
6: * that: (1) source distributions retain this entire copyright notice and
7: * comment, and (2) distributions including binaries display the following
8: * acknowledgement: ``This product includes software developed by the
9: * University of California, Berkeley and its contributors'' in the
10: * documentation or other materials provided with the distribution and in
11: * all advertising materials mentioning features or use of this software.
12: * Neither the name of the University nor the names of its contributors may
13: * be used to endorse or promote products derived from this software without
14: * specific prior written permission.
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
16: * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
17: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18: */
19:
20: #ifndef lint
21: static char sccsid[] = "@(#)shield.c 5.5 (Berkeley) 6/1/90";
22: #endif /* not lint */
23:
24: # include "trek.h"
25: # include "getpar.h"
26:
27: /*
28: ** SHIELD AND CLOAKING DEVICE CONTROL
29: **
30: ** 'f' is one for auto shield up (in case of Condition RED),
31: ** zero for shield control, and negative one for cloaking
32: ** device control.
33: **
34: ** Called with an 'up' or 'down' on the same line, it puts
35: ** the shields/cloak into the specified mode. Otherwise it
36: ** reports to the user the current mode, and asks if she wishes
37: ** to change.
38: **
39: ** This is not a free move. Hits that occur as a result of
40: ** this move appear as though the shields are half up/down,
41: ** so you get partial hits.
42: */
43:
44: struct cvntab Udtab[] =
45: {
46: "u", "p", (int (*)())1, 0,
47: "d", "own", 0, 0,
48: 0
49: };
50:
51: shield(f)
52: int f;
53: {
54: register int i;
55: char c;
56: struct cvntab *r;
57: char s[100];
58: char *device, *dev2, *dev3;
59: int ind;
60: char *stat;
61:
62: if (f > 0 && (Ship.shldup || damaged(SRSCAN)))
63: return;
64: if (f < 0)
65: {
66: /* cloaking device */
67: if (Ship.ship == QUEENE)
68: return (printf("Ye Faire Queene does not have the cloaking device.\n"));
69: device = "Cloaking device";
70: dev2 = "is";
71: ind = CLOAK;
72: dev3 = "it";
73: stat = &Ship.cloaked;
74: }
75: else
76: {
77: /* shields */
78: device = "Shields";
79: dev2 = "are";
80: dev3 = "them";
81: ind = SHIELD;
82: stat = &Ship.shldup;
83: }
84: if (damaged(ind))
85: {
86: if (f <= 0)
87: out(ind);
88: return;
89: }
90: if (Ship.cond == DOCKED)
91: {
92: printf("%s %s down while docked\n", device, dev2);
93: return;
94: }
95: if (f <= 0 && !testnl())
96: {
97: r = getcodpar("Up or down", Udtab);
98: i = (int) r->value;
99: }
100: else
101: {
102: if (*stat)
103: (void)sprintf(s, "%s %s up. Do you want %s down", device, dev2, dev3);
104: else
105: (void)sprintf(s, "%s %s down. Do you want %s up", device, dev2, dev3);
106: if (!getynpar(s))
107: return;
108: i = !*stat;
109: }
110: if (*stat == i)
111: {
112: printf("%s already ", device);
113: if (i)
114: printf("up\n");
115: else
116: printf("down\n");
117: return;
118: }
119: if (i)
120: if (f >= 0)
121: Ship.energy -= Param.shupengy;
122: else
123: Ship.cloakgood = 0;
124: Move.free = 0;
125: if (f >= 0)
126: Move.shldchg = 1;
127: *stat = i;
128: return;
129: }
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