Shell Programming and Scripting

I'm always amazed when people do great things with shell scripting. I like to challenge myself to strict shell programming rather than installing third party languages. Good job!

Neo,
I got it working on my powerbook (G4 1.67Ghz..) with bash and macOSX10.5.6 though a bit buggy.. but display quite some funny figures! Look to me it will be hard work to debug because of the figures produced...

I figured cos(a) sin(a) and friends are the transformations, but they were displaying in the playing area. Thanks to Corona, however, it renders correctly now, that I changed the font size to smaller font -- it must have been overflowing the lines in my terminal.

Although it still has some bugs (sometimes blocks rotate when I try to push them into a cavity from the side, pressing left/right arrow), it is a major work of art and you have my admiration for both the effort and the technical realization. Bravo.

Please have a good look at my reply located in #9

On AIX 6.1, its tricky also: doesnt like the sleep values for a start... and to get it display correctly your xterm should have 145x45 size,

Using bash's read builtin for timeouts with read -t may be a more portable way to do timeouts than sleep 0.03. If a system has an actual bash shell, read -t ought to work.

You could also do finicky terminal strangeness by setting read timeouts on the terminal itself with stty.

It works for me in RHEL 5, but not in RHEL 4. :/

Nonetheless, it's an awesome work.

Edit: These are the versions I'm using:

Code:

# Does NOT work here
[verdepollo@atlas ~]$ cat /etc/redhat-release && bash --version
Red Hat Enterprise Linux AS release 4 (Nahant Update 8)
GNU bash, version 3.00.15(1)-release (i686-redhat-linux-gnu)
Copyright (C) 2004 Free Software Foundation, Inc.

# Works flawlessly here:
[root@eve tmp]# cat /etc/redhat-release && bash --version
Red Hat Enterprise Linux Server release 5.5 (Tikanga)
GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2005 Free Software Foundation, Inc.

Edit 2: Also, it seems to work only when using GNU sleep.