On May 7, 2007, at 2:03 PM, Ralph Johnson wrote:

> On 5/7/07, Blake <blake at kingdomrpg.com> wrote:
>> Hey, gang:
>>
>>         I'm designing a game and have ended up with a structure  
>> like this:
>>
>> 1. The UI creates a command object.
>> 2. The UI passes the command object to the game.
>> 3. The game tells the command object to do its thing.
>> 4. The command object invokes the appropriate method in the game.
>
> This is probably overkill if you are making single person games.  But
> if you are making multiplayer games then this is a very good design.
> Each person is running an image that has a copy of the game in it.
> When either one of them makes an action, the system sends a copy of
> the command to the other image, and both images execute the command.

Sounds like Croquet.

Josh



> This is by the far the easiest way to make a turn-based, multiplayer
> distributed game like most card games or chess or Risk or ...
>
> -Ralph
>