hi all,
if you ever needed to draw n random numbers from 1:6 in your script,
this function is for you.
OK, ceil (6*rand (1, n)) can do it as well, but this one is cooler.
Terminal with ansi-escapes required.
enjoy
--
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz
## Copyright (C) 2009 Jaroslav Hajek <high...@gmail.com>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn{Function File} rolldices (n)
## @deftypefnx{Function File} rolldices (n, nrep, delay)
## Returns n random numbers from the 1:6 range, displaying a visual selection
## effect. nrep sets the number of rolls, delay specifies time between successive
## rolls in seconds. Default is nrep = 25 and delay = 0.1.
## Requires a terminal with ANSI escape sequences enabled.
## @end deftypefn
function numbers = rolldices (n, nrep = 25, delay = .1)
if (nargin != 1)
print_usage ();
endif
persistent matrices = getmatrices ();
screen_cols = getenv ("COLUMNS");
if (isempty (screen_cols))
screen_cols = 80;
else
screen_cols = str2num (screen_cols);
endif
dices_per_row = floor ((screen_cols-1) / 7);
oldpso = page_screen_output (0);
numbers = [];
unwind_protect
while (n > 0)
m = min (n, dices_per_row);
for i = 1:nrep
if (i > 1)
puts (char ([27, 91, 51, 70]));
sleep (delay);
endif
nums = ceil (6 * rand (1, m));
disp (matrices(:,:,nums)(:,:));
endfor
numbers = [numbers, nums];
n -= m;
puts ("\n");
endwhile
unwind_protect_cleanup
page_screen_output (oldpso);
end_unwind_protect
endfunction
function matrices = getmatrices ()
lbrk = [27, 91, 55, 109](ones (1, 3), :);
rbrk = [27, 91, 50, 55, 109](ones (1, 3), :);
spcs = [32, 32; 32, 32; 32, 32];
dchrs = reshape(
[" @ @ @ @@ @@ @";
" @ @ @ @ @";
" @ @@ @@ @@ @"], [3, 5, 6]);
matrices = mat2cell (dchrs, 3, 5, ones (1, 6));
matrices = cellfun (@(mat) [spcs, lbrk, mat, rbrk], matrices, "UniformOutput", false);
matrices = cat (3, matrices{:});
endfunction
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