1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
## Copyright (C) 2009 Jaroslav Hajek <highegg@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; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn{Function File} rolldices (@var{n})
## @deftypefnx{Function File} rolldices (@var{n}, @var{nrep}, @var{delay})
## Returns @var{n} random numbers from the 1:6 range, displaying a visual selection
## effect.
##
## @var{nrep} sets the number of rolls, @var{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
|