[Video] Player-Controlled Replicating Physics Movement, Simulating Physics!

[Rama]

@TheJamsh;337055

Nice one !

So just a couple of questions regarding this, the client simulates all of their movement locally and there’s never any latency between keyboard input and the client actually moving?

In my games I want the client to feel like they are in total control of their character, I’ve worked on several fast paced physX multiplayer games, and you need twith-reactive gameplay as a client, and I found that only to be possible by letting the client be in control and having Server update everyone else.

@TheJamsh;337055

The idea is that you send the Client’s Position, Rotation, Velocity and Ang Velocity on tick via RPC (but ONLY if the pawn is controlled by a player), and the Server accepts those values and sets them for all other clients as well. I guess this means that it is possible for a client to ‘cheat’ but it would be up to the Server to perform some other kind of checks itself to see if a move was possible or not.

Yes you’d need to do cheating checks, but keep in mind the server can STILL take control of the client if it feels the need to, it would be easy to add to my code structure to just throw in a bool to override the client from sending updates and allow server to force client back to a proper position.

void AJoyBallMovement::JoyMoveReplication()
{   
       //Add code here for Server sending cheating corrections

	if(IsLocallyControlled() && !IsCheatingNeedToOverrideClientUpdates)
	{
		JoyMoveRep_Send();
	}
	else
	{
		//Update!
		JoyMoveRep_Receive();  //if Cheating now even local gets updates from Server
	
	}
}

Every system has its pros and cons, for me allowing the client to experience twitch-reactive physX gameplay in real multiplayer games is the highest priority, and I will code as necessary to support that goal :)

:)