Multiplayer Pawn movement synchronization problem

anonymous_user_f9756538 · April 23, 2015, 8:27am

okay i found the problem:

in AActor::GetLifetimeReplicatedProps:

DOREPLIFETIME_CONDITION( AActor, ReplicatedMovement, COND_SimulatedOrPhysics );

then in APawn::PostNetReceiveLocationAndRotation:
if( Role == ROLE_SimulatedProxy )

so my Role is ROLE_AutonomousProxy

I’ve managed to hack around the issue by:

replicating the movement data myself, then faking a role change before applying the movement:

header file:

UFUNCTION()
virtual void OnRep_ReplicatedMovement2();
/** Used for replication of our RootComponent's position and velocity */
UPROPERTY(ReplicatedUsing = OnRep_ReplicatedMovement2)
struct FRepMovement ReplicatedMovement2;
cpp file:

void AGActor::GetLifetimeReplicatedProps(TArray< FLifetimeProperty > & OutLifetimeProps) const
{
Super::GetLifetimeReplicatedProps(OutLifetimeProps);
DOREPLIFETIME(AGActor, ReplicatedMovement2);
}

void AGActor::OnRep_ReplicatedMovement2()
{
// this gets called on the clients
// if this is the client who is being controlled (AutoProxy?)
// we want to allow its position to be set by the server so need to fake being a similated proxy for a moment
ENetRole oldRole = Role;
Role = ROLE_SimulatedProxy;
ReplicatedMovement = ReplicatedMovement2;
OnRep_ReplicatedMovement();

Role = oldRole;
}

void AGActor::GatherCurrentMovement()
{
Super::GatherCurrentMovement();
// check the Super code is using ReplicatedMovement
UPrimitiveComponent* RootPrimComp = Cast&lt;UPrimitiveComponent&gt;(GetRootComponent());
check (!(RootPrimComp && RootPrimComp-&gt;IsSimulatingPhysics()))
check(RootComponent != NULL);
check(RootComponent-&gt;AttachParent == NULL);
ReplicatedMovement2 = ReplicatedMovement;
}

while not ideal, this works. Is there a better way to solve my problem thats not hackey?