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    <p>This sounds like it could benefit from a client/server approach:</p> <p>The player is a client - interactivity and rendering happen on that end. So the player presses a button, the request goes to the server. The reply from the server comes back, and the player's state is updated. At any point between these things happening, the screen can be re-painted, and it reflects the state of the game as the client currently knows it.</p> <p>The AI is likewise a client - it's the equivalent of a bot.</p> <p>The simulation is the server. It gets updates from its clients at various times and updates the state of the world, then sends out these updates to everyone as appropriate. Here's where it ties in with your situation: The simulation/AI requires a static world, and many things are happening at once. The server can simply queue up change requests and apply them before sending the updates back to the client(s). So as far as the server's concerned, the game world isn't actually changing in real time, it's changing whenever the server darn well decides it is.</p> <p>Finally, on the client side, you can prevent the delay between pressing the button and seeing a result by doing some quick approximate calculations and displaying a result (so the immediate need is met) and then displaying the more correct result when the server gets around to talking to you.</p> <p>Note that this does not actually have to be implemented in a TCP/IP over-the-internet sort of way, just that it helps to think of it in those terms.</p> <p>Alternately, you can place the responsibility for keeping the data coherent during the simulation on a database, as they're already built with locking and coherency in mind. Something like sqlite could work as part of a non-networked solution.</p>
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    1. COThank you, now I see the bigger picture. You actally solved two of my problems related to this game (the second is approximately depicted in my other question: http://stackoverflow.com/questions/993635/long-running-rts-game-multiplayer-considerations). The local and network game to be designed as same, so there is practically no differentiation between a single-player and a multiplayer 'game-engine'. Ultimately, it's just message passing. The point is yours.
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