fly.c revision 1.9
1 /* $NetBSD: fly.c,v 1.9 2000/09/24 09:44:28 jsm Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)fly.c 8.2 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: fly.c,v 1.9 2000/09/24 09:44:28 jsm Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include "extern.h" 46 #undef UP 47 #include <curses.h> 48 49 #define MIDR (LINES/2 - 1) 50 #define MIDC (COLS/2 - 1) 51 52 static int row, column; 53 static int dr = 0, dc = 0; 54 static char destroyed; 55 int ourclock = 120; /* time for all the flights in the game */ 56 static char cross = 0; 57 static sig_t oldsig; 58 59 static void blast __P((void)); 60 static void endfly __P((void)); 61 static void moveenemy __P((int)); 62 static void notarget __P((void)); 63 static void screen __P((void)); 64 static void succumb __P((int)); 65 static void target __P((void)); 66 67 static void 68 succumb(dummy) 69 int dummy __attribute__((__unused__)); 70 { 71 if (oldsig == SIG_DFL) { 72 endfly(); 73 exit(1); 74 } 75 if (oldsig != SIG_IGN) { 76 endfly(); 77 (*oldsig) (SIGINT); 78 } 79 } 80 81 int 82 visual() 83 { 84 destroyed = 0; 85 if (initscr() == NULL) { 86 puts("Whoops! No more memory..."); 87 return (0); 88 } 89 oldsig = signal(SIGINT, succumb); 90 crmode(); 91 noecho(); 92 screen(); 93 row = rnd(LINES - 3) + 1; 94 column = rnd(COLS - 2) + 1; 95 moveenemy(0); 96 for (;;) { 97 switch (getchar()) { 98 99 case 'h': 100 case 'r': 101 dc = -1; 102 fuel--; 103 break; 104 105 case 'H': 106 case 'R': 107 dc = -5; 108 fuel -= 10; 109 break; 110 111 case 'l': 112 dc = 1; 113 fuel--; 114 break; 115 116 case 'L': 117 dc = 5; 118 fuel -= 10; 119 break; 120 121 case 'j': 122 case 'u': 123 dr = 1; 124 fuel--; 125 break; 126 127 case 'J': 128 case 'U': 129 dr = 5; 130 fuel -= 10; 131 break; 132 133 case 'k': 134 case 'd': 135 dr = -1; 136 fuel--; 137 break; 138 139 case 'K': 140 case 'D': 141 dr = -5; 142 fuel -= 10; 143 break; 144 145 case '+': 146 if (cross) { 147 cross = 0; 148 notarget(); 149 } else 150 cross = 1; 151 break; 152 153 case ' ': 154 case 'f': 155 if (torps) { 156 torps -= 2; 157 blast(); 158 if (row == MIDR && column - MIDC < 2 && MIDC - column < 2) { 159 destroyed = 1; 160 alarm(0); 161 } 162 } else 163 mvaddstr(0, 0, "*** Out of torpedoes. ***"); 164 break; 165 166 case 'q': 167 endfly(); 168 return (0); 169 170 default: 171 mvaddstr(0, 26, "Commands = r,R,l,L,u,U,d,D,f,+,q"); 172 continue; 173 174 case EOF: 175 break; 176 } 177 if (destroyed) { 178 endfly(); 179 return (1); 180 } 181 if (ourclock <= 0) { 182 endfly(); 183 die(); 184 } 185 } 186 } 187 188 static void 189 screen() 190 { 191 int r, c, n; 192 int i; 193 194 clear(); 195 i = rnd(100); 196 for (n = 0; n < i; n++) { 197 r = rnd(LINES - 3) + 1; 198 c = rnd(COLS); 199 mvaddch(r, c, '.'); 200 } 201 mvaddstr(LINES - 1 - 1, 21, "TORPEDOES FUEL TIME"); 202 refresh(); 203 } 204 205 static void 206 target() 207 { 208 int n; 209 210 move(MIDR, MIDC - 10); 211 addstr("------- + -------"); 212 for (n = MIDR - 4; n < MIDR - 1; n++) { 213 mvaddch(n, MIDC, '|'); 214 mvaddch(n + 6, MIDC, '|'); 215 } 216 } 217 218 static void 219 notarget() 220 { 221 int n; 222 223 move(MIDR, MIDC - 10); 224 addstr(" "); 225 for (n = MIDR - 4; n < MIDR - 1; n++) { 226 mvaddch(n, MIDC, ' '); 227 mvaddch(n + 6, MIDC, ' '); 228 } 229 } 230 231 static void 232 blast() 233 { 234 int n; 235 236 alarm(0); 237 move(LINES - 1, 24); 238 printw("%3d", torps); 239 for (n = LINES - 1 - 2; n >= MIDR + 1; n--) { 240 mvaddch(n, MIDC + MIDR - n, '/'); 241 mvaddch(n, MIDC - MIDR + n, '\\'); 242 refresh(); 243 } 244 mvaddch(MIDR, MIDC, '*'); 245 for (n = LINES - 1 - 2; n >= MIDR + 1; n--) { 246 mvaddch(n, MIDC + MIDR - n, ' '); 247 mvaddch(n, MIDC - MIDR + n, ' '); 248 refresh(); 249 } 250 alarm(1); 251 } 252 253 static void 254 moveenemy(dummy) 255 int dummy __attribute__((__unused__)); 256 { 257 double d; 258 int oldr, oldc; 259 260 oldr = row; 261 oldc = column; 262 if (fuel > 0) { 263 if (row + dr <= LINES - 3 && row + dr > 0) 264 row += dr; 265 if (column + dc < COLS - 1 && column + dc > 0) 266 column += dc; 267 } else 268 if (fuel < 0) { 269 fuel = 0; 270 mvaddstr(0, 60, "*** Out of fuel ***"); 271 } 272 d = (double) ((row - MIDR) * (row - MIDR) + (column - MIDC) * (column - MIDC)); 273 if (d < 16) { 274 row += (rnd(9) - 4) % (4 - abs(row - MIDR)); 275 column += (rnd(9) - 4) % (4 - abs(column - MIDC)); 276 } 277 ourclock--; 278 mvaddstr(oldr, oldc - 1, " "); 279 if (cross) 280 target(); 281 mvaddstr(row, column - 1, "/-\\"); 282 move(LINES - 1, 24); 283 printw("%3d", torps); 284 move(LINES - 1, 42); 285 printw("%3d", fuel); 286 move(LINES - 1, 57); 287 printw("%3d", ourclock); 288 refresh(); 289 signal(SIGALRM, moveenemy); 290 alarm(1); 291 } 292 293 static void 294 endfly() 295 { 296 alarm(0); 297 signal(SIGALRM, SIG_DFL); 298 mvcur(0, COLS - 1, LINES - 1, 0); 299 endwin(); 300 signal(SIGTSTP, SIG_DFL); 301 signal(SIGINT, oldsig); 302 } 303
Indexes created Thu Oct 02 07:10:07 GMT 2025