Perl plays Pong!

Okay so I'm a geek and I spend my Friday night writing a Perl obfu rather than going out. But hey my wife thought it was cool (which probably just means she's a geek too :) ).

This could be more obscure but I think its at least non-obvious the way it is. Will work on a standard size terminal window. *Should* work on Windows but I don't have a box in which to test that theory. Needs Time::HiRes. I did it at first without but it just wasn't as cool. Anyway, here it is:

#!/usr/bin/perl
use Time::HiRes qw(usleep);
$@='Just Another Perl Hacker';$@=length($@);
$|=abs(2-$@);goto f;z:if(int(rand(10))>5){($-
,$.)=($",$;);}else{($-,$.)=($",$;);}@b =();$b
[0] = $-;if($- ==$;){$b[1]=1;}else{$b[1]=7 +
50 + 10 + (5 * 2);}$,='l';$,='r'if$-==$";$vd
 ='u';$vd='d'if int(rand(10))<5;while($|){my
$s="";foreach $%(0 .. 22){foreach$=(0 .. 78)
{if($===39){$s.="|";}if($%==$;&& $===0){$s.=
"]";}elsif($===$b[1]&& $%==$b[0]){$s.= "*";}
elsif($===78&& $%==$"){$s.="[\n";}elsif($===
78){$s.=" \n";}else{$s.=" ";}}}print $s;#### 
$b[1]==1 and$,='r';$b[1]==77 and$,='l';$b[0]
== 23 and$vd='u';$b[0]==0 and$vd='d';if($,eq
'r'){$b[1]++;$mp=\$";}if($, eq'l'){$b[1]--;#
$mp=\$;;}if($vd eq'u'){$b[0]--;$$mp-- unless
$$mp==0;}if($vd eq'd'){$b[0]++;$$mp++ unless
$$mp == 22;}usleep(50_000);system($^);}f:$^=
'clear';$"=int(rand(22));$;=int(rand(22));$^
='cls'if$^O=~m|win|i;goto z;################
[download]

Suggestions welcome!

Update: Took out the need for Time::HiRes as suggested by BrowserUk

#!/usr/bin/perl
$@='Just Another Perl Hacker';$@=length($@);
$|=abs(2-$@);goto f;z:if(int(rand(10))>5){($-
,$.)=($",$;);}else{($-,$.)=($",$;);}@b =();$b
[0] = $-;if($- ==$;){$b[1]=1;}else{$b[1]=7 +
50 + 10 + (5 * 2);}$,='l';$,='r'if$-==$";$vd
 ='u';$vd='d'if int(rand(10))<5;while($|){my
$s="";foreach $%(0 .. 22){foreach$=(0 .. 78)
{if($===39){$s.="|";}if($%==$;&& $===0){$s.=
"]";}elsif($===$b[1]&& $%==$b[0]){$s.= "*";}
elsif($===78&& $%==$"){$s.="[\n";}elsif($===
78){$s.=" \n";}else{$s.=" ";}}}print $s;#### 
$b[1]==1 and$,='r';$b[1]==77 and$,='l';$b[0]
== 23 and$vd='u';$b[0]==0 and$vd='d';if($,eq
'r'){$b[1]++;$mp=\$";}if($, eq'l'){$b[1]--;#
$mp=\$;;}if($vd eq'u'){$b[0]--;$$mp-- unless
$$mp==0;}if($vd eq'd'){$b[0]++;$$mp++ unless
$$mp == 22;}select $`,$`,$`,.05;system($^);}
f:$^='clear';$"=int(rand(22));$;=int(rand(22
));$^='cls'if$^O=~m|win|i;goto z;###########
[download]

Lobster Aliens Are attacking the world!

Comment on Perl plays Pong! Select or Download Code

Replies are listed 'Best First'.
Re: Perl plays Pong! by BrowserUk (Patriarch) on Jan 24, 2004 at 09:43 UTC
Neat!++ You could drop the need for Time::HiRes and use select$`,$`,$`,.05 in place of the usleep. Examine what is said, not who speaks. "Efficiency is intelligent laziness." -David Dunham "Think for yourself!" - Abigail Timing (and a little luck) are everything!	[reply] [d/l]
Re: Perl plays Pong! by jbware (Chaplain) on Jan 25, 2004 at 01:20 UTC
Very Cool++ And I didn't know there was something better to do on a Friday night :) - jbWare	[reply]
Re: Perl plays Pong! by duff (Parson) on Jan 24, 2004 at 08:07 UTC
Cool. Yep it works on windows, but I had to resize my window for it to make sense. duff	[reply]
Re: Perl plays Pong! by CountZero (Bishop) on Jan 24, 2004 at 22:33 UTC
Wonderful! But the players never miss. CountZero "If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law	[reply]
Re: Re: Perl plays Pong! by cfreak (Chaplain) on Jan 25, 2004 at 02:51 UTC
Well I thought about that but that got it a bit more complicated, maybe for version 2 :) Lobster Aliens Are attacking the world!	[reply]
Re: Perl plays Pong! by ysth (Canon) on Jan 25, 2004 at 06:30 UTC
`Can't exec "cls": No such file or directory at pong.pl line 18.` [download] `$ perl -we'print $^O' cygwin` [download]	[reply] [d/l] [select]
Re: Re: Perl plays Pong! by cfreak (Chaplain) on Jan 25, 2004 at 07:20 UTC
This should fix it (untested) #!/usr/bin/perl $@='Just Another Perl Hacker';$@=length($@); $\|=abs(2-$@);goto f;z:if(int(rand(10))>5){($- ,$.)=($",$;);}else{($-,$.)=($",$;);}@b =();$b [0] = $-;if($- ==$;){$b[1]=1;}else{$b[1]=7 + 50 + 10 + (5 * 2);}$,='l';$,='r'if$-==$";$vd ='u';$vd='d'if int(rand(10))<5;while($\|){my $s="";foreach $%(0 .. 22){foreach$=(0 .. 78) {if($===39){$s.="\|";}if($%==$;&& $===0){$s.= "]";}elsif($===$b[1]&& $%==$b[0]){$s.= "*";} elsif($===78&& $%==$"){$s.="[\n";}elsif($=== 78){$s.=" \n";}else{$s.=" ";}}}print $s;#### $b[1]==1 and$,='r';$b[1]==77 and$,='l';$b[0] == 23 and$vd='u';$b[0]==0 and$vd='d';if($,eq 'r'){$b[1]++;$mp=\$";}if($, eq'l'){$b[1]--;# $mp=\$;;}if($vd eq'u'){$b[0]--;$$mp-- unless $$mp==0;}if($vd eq'd'){$b[0]++;$$mp++ unless $$mp == 22;}select $`,$`,$`,.05;system($^);} f:$^='clear';$"=int(rand(22));$;=int(rand(22 ));$^='cls'if$^O=~m\|(?!cyg)win\|i;goto z;#### [download] Lobster Aliens Are attacking the world!	[reply] [d/l]
Re: Re: Re: Perl plays Pong! by ysth (Canon) on Jan 25, 2004 at 07:41 UTC
You need `(?<!cyg)win`. What you have matches three characters that are "win" and aren't "cyg" :)	[reply] [d/l]
Re: Re: Re: Perl plays Pong! by Mr. Muskrat (Canon) on Jan 26, 2004 at 04:05 UTC
One would usually just search for Win32.	[reply]