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unitysamples / LyraStarterGame /Source /LyraGame /System /LyraReplicationGraph.h
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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include "ReplicationGraph.h"
#include "LyraReplicationGraphTypes.h"
#include "LyraReplicationGraph.generated.h"
class AGameplayDebuggerCategoryReplicator;
DECLARE_LOG_CATEGORY_EXTERN(LogLyraRepGraph, Display, All);
/** Lyra Replication Graph implementation. See additional notes in LyraReplicationGraph.cpp! */
UCLASS(transient, config=Engine)
class ULyraReplicationGraph : public UReplicationGraph
{
GENERATED_BODY()
public:
ULyraReplicationGraph();
virtual void ResetGameWorldState() override;
virtual void InitGlobalActorClassSettings() override;
virtual void InitGlobalGraphNodes() override;
virtual void InitConnectionGraphNodes(UNetReplicationGraphConnection* RepGraphConnection) override;
virtual void RouteAddNetworkActorToNodes(const FNewReplicatedActorInfo& ActorInfo, FGlobalActorReplicationInfo& GlobalInfo) override;
virtual void RouteRemoveNetworkActorToNodes(const FNewReplicatedActorInfo& ActorInfo) override;
UPROPERTY()
TArray<TObjectPtr<UClass>> AlwaysRelevantClasses;
UPROPERTY()
TObjectPtr<UReplicationGraphNode_GridSpatialization2D> GridNode;
UPROPERTY()
TObjectPtr<UReplicationGraphNode_ActorList> AlwaysRelevantNode;
TMap<FName, FActorRepListRefView> AlwaysRelevantStreamingLevelActors;
#if WITH_GAMEPLAY_DEBUGGER
void OnGameplayDebuggerOwnerChange(AGameplayDebuggerCategoryReplicator* Debugger, APlayerController* OldOwner);
#endif
void PrintRepNodePolicies();
private:
void AddClassRepInfo(UClass* Class, EClassRepNodeMapping Mapping);
void RegisterClassRepNodeMapping(UClass* Class);
EClassRepNodeMapping GetClassNodeMapping(UClass* Class) const;
void RegisterClassReplicationInfo(UClass* Class);
bool ConditionalInitClassReplicationInfo(UClass* Class, FClassReplicationInfo& ClassInfo);
void InitClassReplicationInfo(FClassReplicationInfo& Info, UClass* Class, bool Spatialize) const;
EClassRepNodeMapping GetMappingPolicy(UClass* Class);
bool IsSpatialized(EClassRepNodeMapping Mapping) const { return Mapping >= EClassRepNodeMapping::Spatialize_Static; }
TClassMap<EClassRepNodeMapping> ClassRepNodePolicies;
/** Classes that had their replication settings explictly set by code in ULyraReplicationGraph::InitGlobalActorClassSettings */
TArray<UClass*> ExplicitlySetClasses;
};
UCLASS()
class ULyraReplicationGraphNode_AlwaysRelevant_ForConnection : public UReplicationGraphNode_AlwaysRelevant_ForConnection
{
GENERATED_BODY()
public:
virtual void NotifyAddNetworkActor(const FNewReplicatedActorInfo& Actor) override { }
virtual bool NotifyRemoveNetworkActor(const FNewReplicatedActorInfo& ActorInfo, bool bWarnIfNotFound=true) override { return false; }
virtual void NotifyResetAllNetworkActors() override { }
virtual void GatherActorListsForConnection(const FConnectionGatherActorListParameters& Params) override;
virtual void LogNode(FReplicationGraphDebugInfo& DebugInfo, const FString& NodeName) const override;
void OnClientLevelVisibilityAdd(FName LevelName, UWorld* StreamingWorld);
void OnClientLevelVisibilityRemove(FName LevelName);
void ResetGameWorldState();
#if WITH_GAMEPLAY_DEBUGGER
AGameplayDebuggerCategoryReplicator* GameplayDebugger = nullptr;
#endif
private:
TArray<FName, TInlineAllocator<64> > AlwaysRelevantStreamingLevelsNeedingReplication;
bool bInitializedPlayerState = false;
};
/**
This is a specialized node for handling PlayerState replication in a frequency limited fashion. It tracks all player states but only returns a subset of them to the replication driver each frame.
This is an optimization for large player connection counts, and not a requirement.
*/
UCLASS()
class ULyraReplicationGraphNode_PlayerStateFrequencyLimiter : public UReplicationGraphNode
{
GENERATED_BODY()
ULyraReplicationGraphNode_PlayerStateFrequencyLimiter();
virtual void NotifyAddNetworkActor(const FNewReplicatedActorInfo& Actor) override { }
virtual bool NotifyRemoveNetworkActor(const FNewReplicatedActorInfo& ActorInfo, bool bWarnIfNotFound=true) override { return false; }
virtual bool NotifyActorRenamed(const FRenamedReplicatedActorInfo& Actor, bool bWarnIfNotFound=true) override { return false; }
virtual void GatherActorListsForConnection(const FConnectionGatherActorListParameters& Params) override;
virtual void PrepareForReplication() override;
virtual void LogNode(FReplicationGraphDebugInfo& DebugInfo, const FString& NodeName) const override;
/** How many actors we want to return to the replication driver per frame. Will not suppress ForceNetUpdate. */
int32 TargetActorsPerFrame = 2;
private:
TArray<FActorRepListRefView> ReplicationActorLists;
FActorRepListRefView ForceNetUpdateReplicationActorList;
};