How to maintain and sync player data?

Unity Engine
1

Hi everybody,

maybe this is a very stupid question, but I’m struggling with this for 2 days now.

My problem seems to be simple:

I have a c# class with player data in it (think of score, ammo, player name and so on). Let’s call it PlayerData for now. And there is a List.

When starting a network game, my server is creating a first entry to this list for it’s local player. No problem so far. :wink:

Now I want to do the following:

  • Add an entry to my playerlist every time a new client connects to server.

  • Sync values of PlayerData when client or server has changed something (I maintain a Changed-Flag for this purpose). After connecting a client has to set it’s username, later server may change scores for example.

  • Finally, remove PlayerData from list when a client disconnets from server.

I did the trick moving serialized PlayerData using RPCs from client to server and vice versa. But I’m not sure, if there isn’t a better way of doing this?

I encountered another problem when a client is disconnecting: I hold corresponding NetworkPlayer in every PlayerData, so I thought it would be an easy task to remove old PlayerData from list - just looping through list and removing every entry for disconnected NetworkPlayer. But it doesn’t work for some reason.

Well, basically I would be happy with some kind of unique NetworkPlayer-ID, that enables me to link my PlayerData objects to a specific NetworkPlayer without need of storing whole NetworkPlayer (or it’s reference, what may cause my above problems).

I read in some forum posts, that player.ToString() (talking of NetworkPlayer, of course) should gimme some global ID. But when checking out, Debug.Log(player.ToString()); prints “0” for client and server every time I connect (via LAN).

How did you do networked playerlists in your projects?

Btw, is there a reason, why Unity’s MasterServer is ignoring my limitation to max 4 connections (in Network.InitializeServer and Network.maxConnections)? Hostlist keeps saying that my game would accept up to 5 connections. Interesting, should be one less. :wink:

Thank you all in advance! :slight_smile:

Christian

2

Player list problem solved, I changed the following:

  • One list with my player data (name, power etc.)
  • One list with just NetworkPlayer and player ID

This way I send player data objects without NetworkPlayers over RPC. I do this only when something in my player list has changed or a new client connects.

When somebody disconnects from server I search for his NetworkPlayer in second list, take the player id and remove corresponding player data item from first list.

At time of posting my original question I had NetworkPlayer as a part of player data. So it was stored in same list and got serialized to send it over RPC. After deserializing I wasn’t able to compare a stored NetworkPlayer against the ones I got in network events (e.g. OnPlayerDisconnected). Result was a player list mess. :wink:

Now my NetworkPlayer objects never got serialized and everything works fine. :slight_smile:

But my hostlist keeps saying one max player more than I told Network.InitializeServer. I’m going nuts.

bye
Christian