FreeOrion

Just a note, all of the XMLEncode() functions should take an empire ID since universe and empire data will be encoded differently for each empire so the encoder will need to know who this message is going to.

Just to rehash, the visibility rules are:

--At the start only the home system is fully visible to a player. All other systems have a location, a name, and a star type.

--After a player has explored a system, that system is fully visible for the remainder of the game.

--Enemy fleets are only visible when in hyperspace towards a player's planet.

--Empire info will be full for the player's empire, for the others will just show name, color, and control status.

Explored system and visible fleet data for an empire is maintained in the Empire object. They are updated during movement, when the player's fleet explores a new system, and any time a fleet is moving toward a system controlled by another player (this is checked each turn as the ownership of the system may change while the fleet is in hyperspace).

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Programming Lead

I would suggest overloading XMLEncode.
One overload can take no parameters and do a complete encoding,
the other can take an empire ID parameter.

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Empire Team Lead

I agree. This sounds like the way to go.

Will do.

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Programming Lead

Actually, since the Emipre manager is not a singleton,
you will probably want to just pass a const reference to an empire.
If you just send an ID you need a manager to look up the empire object in.

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Empire Team Lead

I'm just doing the universe side of things. I'll leave that to you

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Programming Lead

Ok, I just committed all of the default (full encoding) XMLEncodes for universe. For your enjoyment you can drop the following code into server/ServerApp.cpp in the GameInit() function, then build and run the server:

using GG::XMLElement;
ServerUniverse* uni = new ServerUniverse();

uni->CreateUniverse(ClientUniverse::IRREGULAR, 50, 4, 2);

XMLElement element = uni->XMLEncode();

GG::XMLDoc uni_upd;

uni_upd.root_node.AppendChild(element);
Message * mes = new Message(Message::TURN_UPDATE, 1, 2, Message::CLIENT_UNIVERSE_MODULE, uni_upd);

Logger().debugStream() << mes->GetText();


I'm hoping to do the to do the overloaded version tonight, but I've got a lot of crap to do today, so tomorrow might be a better bet...

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Programming Lead

The system being fully visible...what does that mean regarding colonisation of planets? If another player colonises a planet in a system I've explored but am not present at, does that mean that I will know and be able to see?

That is correct. You won't see fleets stationed there, but everything else is visible. This is probably not optimal, but it's awfully easy to code, and we can let the designers decide whether we want some more complicated fog of war system... Incidentally I believe this is the same system moo3 uses.

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Programming Lead

Ultimately I think we will want it to only provide an update when you have a scout there.

Since the client stores its own local copy of what it knows this shouldn't be hard should it? The server simply doesn't send an update of the system unless the empire has a valid scout in the system (or proper radar if we have such a technology). Not too important for 0.1, but maybe worth keeping in mind.