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- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)fly.c 5.6 (Berkeley) 3/4/91";
- #endif /* not lint */
-
- #include "externs.h"
- #undef UP
- #include <curses.h>
-
- #define abs(a) ((a) < 0 ? -(a) : (a))
- #define MIDR (LINES/2 - 1)
- #define MIDC (COLS/2 - 1)
-
- int row, column;
- int dr = 0, dc = 0;
- char destroyed;
- int clock = 120; /* time for all the flights in the game */
- char cross = 0;
- sig_t oldsig;
-
- void
- succumb()
- {
- if (oldsig == SIG_DFL) {
- endfly();
- exit(1);
- }
- if (oldsig != SIG_IGN) {
- endfly();
- (*oldsig)(SIGINT);
- }
- }
-
- visual()
- {
- void moveenemy();
-
- destroyed = 0;
- savetty();
- if(initscr() == ERR){
- puts("Whoops! No more memory...");
- return(0);
- }
- oldsig = signal(SIGINT, succumb);
- crmode();
- noecho();
- screen();
- row = rnd(LINES-3) + 1;
- column = rnd(COLS-2) + 1;
- moveenemy();
- for (;;) {
- switch(getchar()){
-
- case 'h':
- case 'r':
- dc = -1;
- fuel--;
- break;
-
- case 'H':
- case 'R':
- dc = -5;
- fuel -= 10;
- break;
-
- case 'l':
- dc = 1;
- fuel--;
- break;
-
- case 'L':
- dc = 5;
- fuel -= 10;
- break;
-
- case 'j':
- case 'u':
- dr = 1;
- fuel--;
- break;
-
- case 'J':
- case 'U':
- dr = 5;
- fuel -= 10;
- break;
-
- case 'k':
- case 'd':
- dr = -1;
- fuel--;
- break;
-
- case 'K':
- case 'D':
- dr = -5;
- fuel -= 10;
- break;
-
- case '+':
- if (cross){
- cross = 0;
- notarget();
- }
- else
- cross = 1;
- break;
-
- case ' ':
- case 'f':
- if (torps){
- torps -= 2;
- blast();
- if (row == MIDR && column - MIDC < 2 && MIDC - column < 2){
- destroyed = 1;
- alarm(0);
- }
- }
- else
- mvaddstr(0,0,"*** Out of torpedoes. ***");
- break;
-
- case 'q':
- endfly();
- return(0);
-
- default:
- mvaddstr(0,26,"Commands = r,R,l,L,u,U,d,D,f,+,q");
- continue;
-
- case EOF:
- break;
- }
- if (destroyed){
- endfly();
- return(1);
- }
- if (clock <= 0){
- endfly();
- die();
- }
- }
- }
-
- screen()
- {
- register int r,c,n;
- int i;
-
- clear();
- i = rnd(100);
- for (n=0; n < i; n++){
- r = rnd(LINES-3) + 1;
- c = rnd(COLS);
- mvaddch(r, c, '.');
- }
- mvaddstr(LINES-1-1,21,"TORPEDOES FUEL TIME");
- refresh();
- }
-
- target()
- {
- register int n;
-
- move(MIDR,MIDC-10);
- addstr("------- + -------");
- for (n = MIDR-4; n < MIDR-1; n++){
- mvaddch(n,MIDC,'|');
- mvaddch(n+6,MIDC,'|');
- }
- }
-
- notarget()
- {
- register int n;
-
- move(MIDR,MIDC-10);
- addstr(" ");
- for (n = MIDR-4; n < MIDR-1; n++){
- mvaddch(n,MIDC,' ');
- mvaddch(n+6,MIDC,' ');
- }
- }
-
- blast()
- {
- register int n;
-
- alarm(0);
- move(LINES-1, 24);
- printw("%3d", torps);
- for(n = LINES-1-2; n >= MIDR + 1; n--){
- mvaddch(n, MIDC+MIDR-n, '/');
- mvaddch(n, MIDC-MIDR+n, '\\');
- refresh();
- }
- mvaddch(MIDR,MIDC,'*');
- for(n = LINES-1-2; n >= MIDR + 1; n--){
- mvaddch(n, MIDC+MIDR-n, ' ');
- mvaddch(n, MIDC-MIDR+n, ' ');
- refresh();
- }
- alarm(1);
- }
-
- void
- moveenemy()
- {
- double d;
- int oldr, oldc;
-
- oldr = row;
- oldc = column;
- if (fuel > 0){
- if (row + dr <= LINES-3 && row + dr > 0)
- row += dr;
- if (column + dc < COLS-1 && column + dc > 0)
- column += dc;
- } else if (fuel < 0){
- fuel = 0;
- mvaddstr(0,60,"*** Out of fuel ***");
- }
- d = (double) ((row - MIDR)*(row - MIDR) + (column - MIDC)*(column - MIDC));
- if (d < 16){
- row += (rnd(9) - 4) % (4 - abs(row - MIDR));
- column += (rnd(9) - 4) % (4 - abs(column - MIDC));
- }
- clock--;
- mvaddstr(oldr, oldc - 1, " ");
- if (cross)
- target();
- mvaddstr(row, column - 1, "/-\\");
- move(LINES-1, 24);
- printw("%3d", torps);
- move(LINES-1, 42);
- printw("%3d", fuel);
- move(LINES-1, 57);
- printw("%3d", clock);
- refresh();
- signal(SIGALRM, moveenemy);
- alarm(1);
- }
-
- endfly()
- {
- alarm(0);
- signal(SIGALRM, SIG_DFL);
- mvcur(0,COLS-1,LINES-1,0);
- endwin();
- signal(SIGTSTP, SIG_DFL);
- signal(SIGINT, oldsig);
- }
-