contrib/luacurses/test/rain.lua

   1
   2 require("curses");
   3
   4 curses.initscr();
   5 curses.nl();
   6 curses.noecho();
   7
   8
   9 if (curses.has_colors()) then
  10     curses.start_color();
  11     curses.init_pair(1, curses.COLOR_BLUE, curses.COLOR_BLACK);
  12     curses.init_pair(2, curses.COLOR_CYAN, curses.COLOR_BLACK);
  13 end
  14
  15 curses.curs_set(0);
  16 curses.timeout(0);
  17
  18 math.randomseed(os.time());
  19
  20 lines = curses.LINES();
  21 cols = curses.COLS();
  22
  23 xpos = {};
  24 ypos = {};
  25 r = lines - 4;
  26 c = cols - 4;
  27 for i = 0, 4 do
  28   xpos[i] = c * math.random() + 2;
  29   ypos[i] = r * math.random() + 2;
  30 end
  31
  32 function dec(i, max)
  33     if (curses.has_colors()) then
  34         local z = 3 * math.random();
  35         local c = curses.COLOR_PAIR(z);
  36         curses.attrset(c);
  37         if (math.floor(z) > 0) then
  38             curses.attron(curses.A_BOLD);
  39         end
  40     end
  41
  42     if (i > 0) then return i - 1;
  43     else return max;
  44     end
  45 end
  46
  47 i = 0;
  48 while(true) do
  49     x = c * math.random() + 2;
  50     y = r * math.random() + 2;
  51
  52     curses.mvaddstr(y, x, ".");
  53
  54     curses.mvaddstr(ypos[i], xpos[i],           "o");
  55
  56     i = dec(i, 4);
  57     curses.mvaddstr(ypos[i], xpos[i],           "O");
  58
  59     i = dec(i, 4);
  60     curses.mvaddstr(ypos[i] - 1, xpos[i],       "-");
  61     curses.mvaddstr(ypos[i],     xpos[i] - 1,  "|.|");
  62     curses.mvaddstr(ypos[i] + 1, xpos[i],       "-");
  63
  64     i = dec(i, 4);
  65     curses.mvaddstr(ypos[i] - 2, xpos[i],       "-");
  66     curses.mvaddstr(ypos[i] - 1, xpos[i] - 1,  "/ \\");
  67     curses.mvaddstr(ypos[i],     xpos[i] - 2, "| O |");
  68     curses.mvaddstr(ypos[i] + 1, xpos[i] - 1, "\\ /");
  69     curses.mvaddstr(ypos[i] + 2, xpos[i],       "-");
  70
  71     i = dec(i, 4);
  72     curses.mvaddstr(ypos[i] - 2, xpos[i],       " ");
  73     curses.mvaddstr(ypos[i] - 1, xpos[i] - 1,  "   ");
  74     curses.mvaddstr(ypos[i],     xpos[i] - 2, "     ");
  75     curses.mvaddstr(ypos[i] + 1, xpos[i] - 1,  "   ");
  76     curses.mvaddstr(ypos[i] + 2, xpos[i],       " ");
  77
  78
  79     xpos[i] = x;
  80     ypos[i] = y;
  81
  82     local ch = curses.getch();
  83     if (ch == string.byte('q', 1)) or (ch == string.byte('Q', 1)) then break; end
  84     curses.refresh();
  85     curses.napms(50);
  86 end
  87
  88 curses.endwin();
  89