[jdev] how to program a jabber game server

[Michal 'vorner' Vaner]

On Thu, Feb 01, 2007 at 12:18:58PM -0800, Neil Stevens wrote:
> Michal 'vorner' Vaner wrote:
> > Do I get Volity right that just everything happens on the server and you
> > can not have games without server support? It is a bit glitch for things
> > like tic-tac-toe or battleship, IMHO.
> 
> Actually for a game like battleship, and any game with incomplete
> information, you HAVE to do everything server-side.  Otherwise it's too
> easy to cheat.

Why? You can do the check after the game (as you would have done in real
world). It can be done for example lake this:

• Every side makes its sea
• Generates a random string
• Puts that together and makes a hash
• Sends that hash to the other side
• The other side does not know your sea, even by trying all seas - it
does not have tho random data
• After the game, you send the sea and hash
• It can be tested if it fits
• You can not decide you change your sea in the middle, because your
hash would not fit (with a good hash, you could not generate proper
"random" data)

So it would be the same safety as in real game

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Michal "vorner" Vaner
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