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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
6: * provided that the above copyright notice and this paragraph are
7: * duplicated in all such forms and that any documentation,
8: * advertising materials, and other materials related to such
9: * distribution and use acknowledge that the software was developed
10: * by the University of California, Berkeley. The name of the
11: * University may not be used to endorse or promote products derived
12: * from this software without specific prior written permission.
13: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15: * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16: */
17:
18: #ifndef lint
19: static char sccsid[] = "@(#)shield.c 5.4 (Berkeley) 6/18/88";
20: #endif /* not lint */
21:
22: # include "trek.h"
23: # include "getpar.h"
24:
25: /*
26: ** SHIELD AND CLOAKING DEVICE CONTROL
27: **
28: ** 'f' is one for auto shield up (in case of Condition RED),
29: ** zero for shield control, and negative one for cloaking
30: ** device control.
31: **
32: ** Called with an 'up' or 'down' on the same line, it puts
33: ** the shields/cloak into the specified mode. Otherwise it
34: ** reports to the user the current mode, and asks if she wishes
35: ** to change.
36: **
37: ** This is not a free move. Hits that occur as a result of
38: ** this move appear as though the shields are half up/down,
39: ** so you get partial hits.
40: */
41:
42: struct cvntab Udtab[] =
43: {
44: "u", "p", (int (*)())1, 0,
45: "d", "own", 0, 0,
46: 0
47: };
48:
49: shield(f)
50: int f;
51: {
52: register int i;
53: char c;
54: struct cvntab *r;
55: char s[100];
56: char *device, *dev2, *dev3;
57: int ind;
58: char *stat;
59:
60: if (f > 0 && (Ship.shldup || damaged(SRSCAN)))
61: return;
62: if (f < 0)
63: {
64: /* cloaking device */
65: if (Ship.ship == QUEENE)
66: return (printf("Ye Faire Queene does not have the cloaking device.\n"));
67: device = "Cloaking device";
68: dev2 = "is";
69: ind = CLOAK;
70: dev3 = "it";
71: stat = &Ship.cloaked;
72: }
73: else
74: {
75: /* shields */
76: device = "Shields";
77: dev2 = "are";
78: dev3 = "them";
79: ind = SHIELD;
80: stat = &Ship.shldup;
81: }
82: if (damaged(ind))
83: {
84: if (f <= 0)
85: out(ind);
86: return;
87: }
88: if (Ship.cond == DOCKED)
89: {
90: printf("%s %s down while docked\n", device, dev2);
91: return;
92: }
93: if (f <= 0 && !testnl())
94: {
95: r = getcodpar("Up or down", Udtab);
96: i = (int) r->value;
97: }
98: else
99: {
100: if (*stat)
101: (void)sprintf(s, "%s %s up. Do you want %s down", device, dev2, dev3);
102: else
103: (void)sprintf(s, "%s %s down. Do you want %s up", device, dev2, dev3);
104: if (!getynpar(s))
105: return;
106: i = !*stat;
107: }
108: if (*stat == i)
109: {
110: printf("%s already ", device);
111: if (i)
112: printf("up\n");
113: else
114: printf("down\n");
115: return;
116: }
117: if (i)
118: if (f >= 0)
119: Ship.energy -= Param.shupengy;
120: else
121: Ship.cloakgood = 0;
122: Move.free = 0;
123: if (f >= 0)
124: Move.shldchg = 1;
125: *stat = i;
126: return;
127: }
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