| 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. Neither the name of the University nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | * |
| 29 | * @(#)fly.c 8.1 (Berkeley) 5/31/93 |
| 30 | * $FreeBSD: src/games/battlestar/fly.c,v 1.6.2.1 2001/03/05 11:45:36 kris Exp $ |
| 31 | */ |
| 32 | |
| 33 | #include "externs.h" |
| 34 | #undef UP |
| 35 | #include <curses.h> |
| 36 | |
| 37 | #define MIDR (LINES / 2 - 1) |
| 38 | #define MIDC (COLS / 2 - 1) |
| 39 | |
| 40 | int row, column; |
| 41 | int dr = 0, dc = 0; |
| 42 | char destroyed; |
| 43 | int gclock = 120; /* gtime for all the flights in the game */ |
| 44 | char cross = 0; |
| 45 | sig_t oldsig; |
| 46 | |
| 47 | static void blast(void); |
| 48 | static void endfly(void); |
| 49 | static void moveenemy(int); |
| 50 | static void notarget(void); |
| 51 | static void succumb(int); |
| 52 | static void screen(void); |
| 53 | static void target(void); |
| 54 | |
| 55 | static void |
| 56 | succumb(int sig __unused) |
| 57 | { |
| 58 | if (oldsig == SIG_DFL) { |
| 59 | endfly(); |
| 60 | exit(1); |
| 61 | } |
| 62 | if (oldsig != SIG_IGN) { |
| 63 | endfly(); |
| 64 | (*oldsig)(SIGINT); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | int |
| 69 | visual(void) |
| 70 | { |
| 71 | destroyed = 0; |
| 72 | if (initscr() == NULL) { |
| 73 | puts("Whoops! No more memory..."); |
| 74 | return (0); |
| 75 | } |
| 76 | oldsig = signal(SIGINT, succumb); |
| 77 | cbreak(); |
| 78 | noecho(); |
| 79 | screen(); |
| 80 | row = rnd(LINES - 3) + 1; |
| 81 | column = rnd(COLS - 2) + 1; |
| 82 | moveenemy(0); |
| 83 | for (;;) { |
| 84 | switch (getchar()) { |
| 85 | case 'h': |
| 86 | case 'r': |
| 87 | dc = -1; |
| 88 | fuel--; |
| 89 | break; |
| 90 | |
| 91 | case 'H': |
| 92 | case 'R': |
| 93 | dc = -5; |
| 94 | fuel -= 10; |
| 95 | break; |
| 96 | |
| 97 | case 'l': |
| 98 | dc = 1; |
| 99 | fuel--; |
| 100 | break; |
| 101 | |
| 102 | case 'L': |
| 103 | dc = 5; |
| 104 | fuel -= 10; |
| 105 | break; |
| 106 | |
| 107 | case 'j': |
| 108 | case 'u': |
| 109 | dr = 1; |
| 110 | fuel--; |
| 111 | break; |
| 112 | |
| 113 | case 'J': |
| 114 | case 'U': |
| 115 | dr = 5; |
| 116 | fuel -= 10; |
| 117 | break; |
| 118 | |
| 119 | case 'k': |
| 120 | case 'd': |
| 121 | dr = -1; |
| 122 | fuel--; |
| 123 | break; |
| 124 | |
| 125 | case 'K': |
| 126 | case 'D': |
| 127 | dr = -5; |
| 128 | fuel -= 10; |
| 129 | break; |
| 130 | |
| 131 | case '+': |
| 132 | if (cross) { |
| 133 | cross = 0; |
| 134 | notarget(); |
| 135 | } else |
| 136 | cross = 1; |
| 137 | break; |
| 138 | |
| 139 | case ' ': |
| 140 | case 'f': |
| 141 | if (torps) { |
| 142 | torps -= 2; |
| 143 | blast(); |
| 144 | if (row == MIDR && column - MIDC < 2 && |
| 145 | MIDC - column < 2) { |
| 146 | destroyed = 1; |
| 147 | alarm(0); |
| 148 | } |
| 149 | } else |
| 150 | mvaddstr(0, 0, "*** Out of torpedoes. ***"); |
| 151 | break; |
| 152 | |
| 153 | case 'q': |
| 154 | endfly(); |
| 155 | return (0); |
| 156 | |
| 157 | default: |
| 158 | mvaddstr(0, 26, "Commands = r,R,l,L,u,U,d,D,f,+,q"); |
| 159 | continue; |
| 160 | |
| 161 | case EOF: |
| 162 | break; |
| 163 | } |
| 164 | if (destroyed) { |
| 165 | endfly(); |
| 166 | return (1); |
| 167 | } |
| 168 | if (gclock <= 0) { |
| 169 | endfly(); |
| 170 | die(0); |
| 171 | } |
| 172 | } |
| 173 | /* NOTREACHED */ |
| 174 | return (1); |
| 175 | } |
| 176 | |
| 177 | static void |
| 178 | screen(void) |
| 179 | { |
| 180 | int r, c, n; |
| 181 | int i; |
| 182 | |
| 183 | clear(); |
| 184 | i = rnd(100); |
| 185 | for (n = 0; n < i; n++) { |
| 186 | r = rnd(LINES - 3) + 1; |
| 187 | c = rnd(COLS); |
| 188 | mvaddch(r, c, '.'); |
| 189 | } |
| 190 | mvaddstr(LINES - 1 - 1, 21, "TORPEDOES FUEL TIME"); |
| 191 | refresh(); |
| 192 | } |
| 193 | |
| 194 | static void |
| 195 | target(void) |
| 196 | { |
| 197 | int n; |
| 198 | |
| 199 | move(MIDR, MIDC - 10); |
| 200 | addstr("------- + -------"); |
| 201 | for (n = MIDR - 4; n < MIDR - 1; n++) { |
| 202 | mvaddch(n, MIDC, '|'); |
| 203 | mvaddch(n + 6, MIDC, '|'); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | static void |
| 208 | notarget(void) |
| 209 | { |
| 210 | int n; |
| 211 | |
| 212 | move(MIDR, MIDC - 10); |
| 213 | addstr(" "); |
| 214 | for (n = MIDR - 4; n < MIDR - 1; n++) { |
| 215 | mvaddch(n, MIDC, ' '); |
| 216 | mvaddch(n + 6, MIDC, ' '); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | static void |
| 221 | blast(void) |
| 222 | { |
| 223 | int n; |
| 224 | |
| 225 | alarm(0); |
| 226 | move(LINES - 1, 24); |
| 227 | printw((char *)(uintptr_t)(const void *)"%3d", torps); |
| 228 | for (n = LINES - 1 - 2; n >= MIDR + 1; n--) { |
| 229 | mvaddch(n, MIDC + MIDR - n, '/'); |
| 230 | mvaddch(n, MIDC - MIDR + n, '\\'); |
| 231 | refresh(); |
| 232 | } |
| 233 | mvaddch(MIDR, MIDC, '*'); |
| 234 | for (n = LINES - 1 - 2; n >= MIDR + 1; n--) { |
| 235 | mvaddch(n, MIDC + MIDR - n, ' '); |
| 236 | mvaddch(n, MIDC - MIDR + n, ' '); |
| 237 | refresh(); |
| 238 | } |
| 239 | alarm(1); |
| 240 | } |
| 241 | |
| 242 | static void |
| 243 | moveenemy(__unused int sig) |
| 244 | { |
| 245 | double d; |
| 246 | int oldr, oldc; |
| 247 | |
| 248 | sig = 0; |
| 249 | oldr = row; |
| 250 | oldc = column; |
| 251 | if (fuel > 0) { |
| 252 | if (row + dr <= LINES - 3 && row + dr > 0) |
| 253 | row += dr; |
| 254 | if (column + dc < COLS - 1 && column + dc > 0) |
| 255 | column += dc; |
| 256 | } else if (fuel < 0) { |
| 257 | fuel = 0; |
| 258 | mvaddstr(0, 60, "*** Out of fuel ***"); |
| 259 | } |
| 260 | d = (double)((row - MIDR) * (row - MIDR) + (column - MIDC) * |
| 261 | (column - MIDC)); |
| 262 | if (d < 16) { |
| 263 | row += (rnd(9) - 4) % (4 - abs(row - MIDR)); |
| 264 | column += (rnd(9) - 4) % (4 - abs(column - MIDC)); |
| 265 | } |
| 266 | gclock--; |
| 267 | mvaddstr(oldr, oldc - 1, " "); |
| 268 | if (cross) |
| 269 | target(); |
| 270 | mvaddstr(row, column - 1, "/-\\"); |
| 271 | move(LINES - 1, 24); |
| 272 | printw((char *)(uintptr_t)(const void *)"%3d", torps); |
| 273 | move(LINES - 1, 42); |
| 274 | printw((char *)(uintptr_t)(const void *)"%3d", fuel); |
| 275 | move(LINES - 1, 57); |
| 276 | printw((char *)(uintptr_t)(const void *)"%3d", gclock); |
| 277 | refresh(); |
| 278 | signal(SIGALRM, moveenemy); |
| 279 | alarm(1); |
| 280 | } |
| 281 | |
| 282 | static void |
| 283 | endfly(void) |
| 284 | { |
| 285 | alarm(0); |
| 286 | signal(SIGALRM, SIG_DFL); |
| 287 | mvcur(0, COLS - 1, LINES - 1, 0); |
| 288 | endwin(); |
| 289 | signal(SIGTSTP, SIG_DFL); |
| 290 | signal(SIGINT, oldsig); |
| 291 | } |