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1.1 root 1: /*
2: * Copyright (c) 1983 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[] = "@(#)fly.c 5.2 (Berkeley) 6/19/88";
20: #endif /* not lint */
21:
22: #include "externs.h"
23: #undef UP
24: #include <curses.h>
25:
26: #define abs(a) ((a) < 0 ? -(a) : (a))
27: #define MIDR (LINES/2 - 1)
28: #define MIDC (COLS/2 - 1)
29:
30: int row, column;
31: int dr = 0, dc = 0;
32: char destroyed;
33: int clock = 120; /* time for all the flights in the game */
34: char cross = 0;
35: int (*oldsig)();
36:
37: succumb()
38: {
39: if (oldsig == SIG_DFL) {
40: endfly();
41: exit(1);
42: }
43: if (oldsig != SIG_IGN) {
44: endfly();
45: (*oldsig)();
46: }
47: }
48:
49: visual()
50: {
51: int moveenemy();
52:
53: destroyed = 0;
54: savetty();
55: if(initscr() == ERR){
56: puts("Whoops! No more memory...");
57: return(0);
58: }
59: oldsig = signal(SIGINT, succumb);
60: crmode();
61: noecho();
62: screen();
63: row = rnd(LINES-3) + 1;
64: column = rnd(COLS-2) + 1;
65: moveenemy();
66: for (;;) {
67: switch(getchar()){
68:
69: case 'h':
70: case 'r':
71: dc = -1;
72: fuel--;
73: break;
74:
75: case 'H':
76: case 'R':
77: dc = -5;
78: fuel -= 10;
79: break;
80:
81: case 'l':
82: dc = 1;
83: fuel--;
84: break;
85:
86: case 'L':
87: dc = 5;
88: fuel -= 10;
89: break;
90:
91: case 'j':
92: case 'u':
93: dr = 1;
94: fuel--;
95: break;
96:
97: case 'J':
98: case 'U':
99: dr = 5;
100: fuel -= 10;
101: break;
102:
103: case 'k':
104: case 'd':
105: dr = -1;
106: fuel--;
107: break;
108:
109: case 'K':
110: case 'D':
111: dr = -5;
112: fuel -= 10;
113: break;
114:
115: case '+':
116: if (cross){
117: cross = 0;
118: notarget();
119: }
120: else
121: cross = 1;
122: break;
123:
124: case ' ':
125: case 'f':
126: if (torps){
127: torps -= 2;
128: blast();
129: if (row == MIDR && column - MIDC < 2 && MIDC - column < 2){
130: destroyed = 1;
131: alarm(0);
132: }
133: }
134: else
135: mvaddstr(0,0,"*** Out of torpedoes. ***");
136: break;
137:
138: case 'q':
139: endfly();
140: return(0);
141:
142: default:
143: mvaddstr(0,26,"Commands = r,R,l,L,u,U,d,D,f,+,q");
144: continue;
145:
146: case EOF:
147: break;
148: }
149: if (destroyed){
150: endfly();
151: return(1);
152: }
153: if (clock <= 0){
154: endfly();
155: die();
156: }
157: }
158: }
159:
160: screen()
161: {
162: register int r,c,n;
163: int i;
164:
165: clear();
166: i = rnd(100);
167: for (n=0; n < i; n++){
168: r = rnd(LINES-3) + 1;
169: c = rnd(COLS);
170: mvaddch(r, c, '.');
171: }
172: mvaddstr(LINES-1-1,21,"TORPEDOES FUEL TIME");
173: refresh();
174: }
175:
176: target()
177: {
178: register int n;
179:
180: move(MIDR,MIDC-10);
181: addstr("------- + -------");
182: for (n = MIDR-4; n < MIDR-1; n++){
183: mvaddch(n,MIDC,'|');
184: mvaddch(n+6,MIDC,'|');
185: }
186: }
187:
188: notarget()
189: {
190: register int n;
191:
192: move(MIDR,MIDC-10);
193: addstr(" ");
194: for (n = MIDR-4; n < MIDR-1; n++){
195: mvaddch(n,MIDC,' ');
196: mvaddch(n+6,MIDC,' ');
197: }
198: }
199:
200: blast()
201: {
202: register int n;
203:
204: alarm(0);
205: move(LINES-1, 24);
206: printw("%3d", torps);
207: for(n = LINES-1-2; n >= MIDR + 1; n--){
208: mvaddch(n, MIDC+MIDR-n, '/');
209: mvaddch(n, MIDC-MIDR+n, '\\');
210: refresh();
211: }
212: mvaddch(MIDR,MIDC,'*');
213: for(n = LINES-1-2; n >= MIDR + 1; n--){
214: mvaddch(n, MIDC+MIDR-n, ' ');
215: mvaddch(n, MIDC-MIDR+n, ' ');
216: refresh();
217: }
218: alarm(1);
219: }
220:
221: moveenemy()
222: {
223: double d;
224: int oldr, oldc;
225:
226: oldr = row;
227: oldc = column;
228: if (fuel > 0){
229: if (row + dr <= LINES-3 && row + dr > 0)
230: row += dr;
231: if (column + dc < COLS-1 && column + dc > 0)
232: column += dc;
233: } else if (fuel < 0){
234: fuel = 0;
235: mvaddstr(0,60,"*** Out of fuel ***");
236: }
237: d = (double) ((row - MIDR)*(row - MIDR) + (column - MIDC)*(column - MIDC));
238: if (d < 16){
239: row += (rnd(9) - 4) % (4 - abs(row - MIDR));
240: column += (rnd(9) - 4) % (4 - abs(column - MIDC));
241: }
242: clock--;
243: mvaddstr(oldr, oldc - 1, " ");
244: if (cross)
245: target();
246: mvaddstr(row, column - 1, "/-\\");
247: move(LINES-1, 24);
248: printw("%3d", torps);
249: move(LINES-1, 42);
250: printw("%3d", fuel);
251: move(LINES-1, 57);
252: printw("%3d", clock);
253: refresh();
254: signal(SIGALRM, moveenemy);
255: alarm(1);
256: }
257:
258: endfly()
259: {
260: alarm(0);
261: signal(SIGALRM, SIG_DFL);
262: mvcur(0,COLS-1,LINES-1,0);
263: endwin();
264: signal(SIGTSTP, SIG_DFL);
265: signal(SIGINT, oldsig);
266: }
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