Re: [alex stt org: gtetrinet and "qualified client"]

[Alex Lock <alex stt org>]

On Saturday, October 4, 2003, at 05:37 PM, James Antill wrote:

>  Well you can always send a full field, a differential is done by...
>
> foreach tile
>     ADD_TILE_MARKER
>     foreach row
>         foreach column
>             if (tile different)
>                  ADD_DIFFERENCE
>
> ADD_TILE_MARKER is the ASCII character '!' plus the tile number
> (0-14). Note that you _only_ add this is there is a difference for
> that tile number.
>
> ADD_DIFFERENCE is the encoded column number followed by the encoded
> row number. Encoding is done by adding the ASCII character '3' to the
> value.
>
>  So a zero difference is no characters, a difference of a new tile 0
> being at the bottom leftmost column would be "!33", and a difference
> of tile 2 being at the next to last row and in the "drop" column for
> a tetris (the left of the middle two columns, row 6 of 12) is "#49".

This actually helped a great deal (thank you)!

I've written a Cocoa equivalent using an array of NSMutableStrings to 
store the values and then combining the non-null ones (the ones that 
changed) at the end.  Actually simplified the algorithm quite a bit as 
I was able to do away w/ the row_count entirely.

I'm having another problem now, however.  It would seem that connecting 
to tetrinet.org repeatedly w/ an "unqualified" client is a good way to 
get yourself banned:)  Does anyone know who the admin for that server 
is (or is said person a member of the list?)?  It would be really great 
if I could get exemption from the rule until I work these bugs out.

Thanks,

Alex <alex stt org>