I was hoping to avoid coming into the forums to ask this question but I can't 
seem to find the resources I need, so here I am.  Let me lay some quick 
groundwork before I ask my question.  I am looking to create a game mod for an 
open source game engine that so happens to use OSG.  I am a software engineer 
and my past experience with game engines is in Unity3d.  This is a bit 
different than my experiences since Unity has all of that built into it's 
package, where as the game engine I plan on modding is built on individual 
libraries to handle specifics such as physics, graphics, audio, ect.  To add in 
networking I plan on using Raknet or Ice.

My question then is how would a game scene on Client B's computer update and 
stay in sync with the scene on Client A's computer.  Just some extra 
information to narrow the question... The approach would be coop mode where 
Client A loads an instance of the game and his game also becomes the server.  
Client B connects to Client A's game instance.  What are others experiences to 
the best way to handle loading Client B's scene and keeping it in sync with 
client A.  Again i'm not talking about how to handle the network layer, I 
already have that covered.  More specifically how to work with OSGs scenes when 
things are updating remotely.
In my mind it would seem that events, scripting, calculating damage, etc is all 
running on Client A's game instance.  Client B's game instance is just 
graphically displaying the game and any events, attacks, trigger that occur on 
client B's machine are just being sent over to Client A for calculation.  So 
Client A really is the work horse.  For example if Client B presses W to move 
forward, Client B's movement script isn't actually ran, but rather the key 
press is sent over to Client A's game whos movement script runs and then 
updates the movement on Client A's machine.  That movement on Client A game is 
then sent over to client B as x,y coordinate update to keep visual in sync with 
Client A.

Does what I just described sound correct?  Also what may that look like down in 
OSG?  If I am way off track please let me know.

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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=64108#64108





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