contrib/ncurses-5.4/test/rain.c

   1 /*
   2  * $Id: rain.c,v 1.20 2002/06/29 23:32:18 tom Exp $
   3  */
   4 #include <test.priv.h>
   5
   6 /* rain 11/3/1980 EPS/CITHEP */
   7
   8 static float ranf(void);
   9 static void onsig(int sig);
  10
  11 static int
  12 next_j(int j)
  13 {
  14     if (j == 0)
  15         j = 4;
  16     else
  17         --j;
  18     if (has_colors()) {
  19         int z = (int) (3 * ranf());
  20         chtype color = COLOR_PAIR(z);
  21         if (z)
  22             color |= A_BOLD;
  23         attrset(color);
  24     }
  25     return j;
  26 }
  27
  28 int
  29 main(
  30         int argc GCC_UNUSED,
  31         char *argv[]GCC_UNUSED)
  32 {
  33     int x, y, j;
  34     static int xpos[5], ypos[5];
  35     float r;
  36     float c;
  37
  38     setlocale(LC_ALL, "");
  39
  40     for (j = SIGHUP; j <= SIGTERM; j++)
  41         if (signal(j, SIG_IGN) != SIG_IGN)
  42             signal(j, onsig);
  43
  44     initscr();
  45     if (has_colors()) {
  46         int bg = COLOR_BLACK;
  47         start_color();
  48 #if HAVE_USE_DEFAULT_COLORS
  49         if (use_default_colors() == OK)
  50             bg = -1;
  51 #endif
  52         init_pair(1, COLOR_BLUE, bg);
  53         init_pair(2, COLOR_CYAN, bg);
  54     }
  55     nl();
  56     noecho();
  57     curs_set(0);
  58     timeout(0);
  59
  60     r = (float) (LINES - 4);
  61     c = (float) (COLS - 4);
  62     for (j = 5; --j >= 0;) {
  63         xpos[j] = (int) (c * ranf()) + 2;
  64         ypos[j] = (int) (r * ranf()) + 2;
  65     }
  66
  67     for (j = 0;;) {
  68         x = (int) (c * ranf()) + 2;
  69         y = (int) (r * ranf()) + 2;
  70
  71         mvaddch(y, x, '.');
  72
  73         mvaddch(ypos[j], xpos[j], 'o');
  74
  75         j = next_j(j);
  76         mvaddch(ypos[j], xpos[j], 'O');
  77
  78         j = next_j(j);
  79         mvaddch(ypos[j] - 1, xpos[j], '-');
  80         mvaddstr(ypos[j], xpos[j] - 1, "|.|");
  81         mvaddch(ypos[j] + 1, xpos[j], '-');
  82
  83         j = next_j(j);
  84         mvaddch(ypos[j] - 2, xpos[j], '-');
  85         mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\");
  86         mvaddstr(ypos[j], xpos[j] - 2, "| O |");
  87         mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /");
  88         mvaddch(ypos[j] + 2, xpos[j], '-');
  89
  90         j = next_j(j);
  91         mvaddch(ypos[j] - 2, xpos[j], ' ');
  92         mvaddstr(ypos[j] - 1, xpos[j] - 1, "   ");
  93         mvaddstr(ypos[j], xpos[j] - 2, "     ");
  94         mvaddstr(ypos[j] + 1, xpos[j] - 1, "   ");
  95         mvaddch(ypos[j] + 2, xpos[j], ' ');
  96
  97         xpos[j] = x;
  98         ypos[j] = y;
  99
 100         switch (getch()) {
 101         case ('q'):
 102         case ('Q'):
 103             curs_set(1);
 104             endwin();
 105             ExitProgram(EXIT_SUCCESS);
 106         case 's':
 107             nodelay(stdscr, FALSE);
 108             break;
 109         case ' ':
 110             nodelay(stdscr, TRUE);
 111             break;
 112 #ifdef KEY_RESIZE
 113         case (KEY_RESIZE):
 114             r = (float) (LINES - 4);
 115             c = (float) (COLS - 4);
 116             break;
 117 #endif
 118         }
 119         napms(50);
 120     }
 121 }
 122
 123 static void
 124 onsig(int n GCC_UNUSED)
 125 {
 126     curs_set(1);
 127     endwin();
 128     ExitProgram(EXIT_FAILURE);
 129 }
 130
 131 static float
 132 ranf(void)
 133 {
 134     long r = (rand() & 077777);
 135     return ((float) r / 32768.);
 136 }