Add resource node persistence

Source/AgrarianGame/AgrarianResourceNode.cpp

@@ -4,6 +4,7 @@
 #include "AgrarianGameCharacter.h"
 #include "AgrarianInventoryComponent.h"
 #include "AgrarianItemDefinitionAsset.h"
+#include "AgrarianSaveGame.h"
 #include "Components/StaticMeshComponent.h"
 #include "TimerManager.h"
 #include "Net/UnrealNetwork.h"
@@ -94,6 +95,40 @@ void AAgrarianResourceNode::OnRep_RemainingHarvests()
 	UpdateDepletedState();
 }
 
+FName AAgrarianResourceNode::GetResourcePersistenceId() const
+{
+	return PersistenceNodeId != NAME_None ? PersistenceNodeId : GetFName();
+}
+
+FAgrarianSavedResourceNode AAgrarianResourceNode::CaptureResourceSaveState() const
+{
+	FAgrarianSavedResourceNode SavedNode;
+	SavedNode.ResourceNodeId = GetResourcePersistenceId();
+	SavedNode.RemainingHarvests = RemainingHarvests;
+	SavedNode.bRespawnsForMvp = bRespawnsForMvp;
+	return SavedNode;
+}
+
+void AAgrarianResourceNode::ApplyResourceSaveState(const FAgrarianSavedResourceNode& SavedNode)
+{
+	if (!HasAuthority() || SavedNode.ResourceNodeId == NAME_None || SavedNode.ResourceNodeId != GetResourcePersistenceId())
+	{
+		return;
+	}
+
+	RemainingHarvests = FMath::Clamp(SavedNode.RemainingHarvests, 0, FMath::Max(1, MaxHarvests));
+	if (RemainingHarvests > 0)
+	{
+		if (UWorld* World = GetWorld())
+		{
+			World->GetTimerManager().ClearTimer(RespawnTimerHandle);
+		}
+	}
+
+	UpdateDepletedState();
+	ScheduleRespawnIfNeeded();
+}
+
 bool AAgrarianResourceNode::HasRequiredTool(const AAgrarianGameCharacter* Interactor) const
 {
 	if (RequiredToolItemId == NAME_None)