The code is quite ready for implementing multiplayer campaigns, now that:

• Random variables do not break everything
• Messages may be translated independently on several sides of a MP game.
• The MP setup code is rather clean
• Side-specific objectives are possible

Multiplayer campaigns will be implemented by making the multiplayer code calling play_game instead of play_level, and by modifying play_game so that this works. The game host will send the serialized game_state to the client, and not a snapshot of the game as it did before.

On the host, play_game will load scenarios from the game config. On the client, it will load scenarios from the network.

The server will certainly have to be fixed so that it understands level data being sent in the middle of a game session.