200 - Limiting Server-Side Rewind

Source/Blaster/PlayerController/BlasterPlayerController.cpp

@@ -75,6 +75,10 @@ void ABlasterPlayerController::CheckPing(float DeltaTime)
 			{
 				HighPingWarning();
 				PingAnimationRunningTime = 0.f;
+				ServerReportPingStatus(true);
+			} else
+			{
+				ServerReportPingStatus(false);
 			}
 		}
 	}
@@ -95,6 +99,11 @@ void ABlasterPlayerController::CheckPing(float DeltaTime)
 	}
 }
 
+// Is the ping to high?
+void ABlasterPlayerController::ServerReportPingStatus_Implementation(bool bHighPing)
+{
+	HighPingDelegate.Broadcast(bHighPing);
+}
 
 void ABlasterPlayerController::SetDebugMsg2(FString Key, FString Value)
 {

Source/Blaster/PlayerController/BlasterPlayerController.h

@@ -6,6 +6,8 @@
 #include "GameFramework/PlayerController.h"
 #include "BlasterPlayerController.generated.h"
 
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FHighPingDelegate, bool, bPingTooHigh);
+
 /**
  * 
  */
@@ -47,6 +49,8 @@ public:
 
 	float SingleTripTime = 0.f;
 
+	FHighPingDelegate HighPingDelegate;
+	
 protected:
 
 	virtual void BeginPlay() override;
@@ -139,6 +143,10 @@ private:
 	float PingAnimationRunningTime = 0.f;
 	UPROPERTY(EditAnywhere)
 	float CheckPingFrequency = 20.f;
+
+	UFUNCTION(Server, Reliable)
+	void ServerReportPingStatus(bool bHighPing);
+	
 	UPROPERTY(EditAnywhere)
 	float HighPingThreshold = 50.f;
 };

Source/Blaster/Weapon/Weapon.cpp

@@ -45,6 +45,7 @@ void AWeapon::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeP
 	Super::GetLifetimeReplicatedProps(OutLifetimeProps);
 
 	DOREPLIFETIME(AWeapon, WeaponState);
+	DOREPLIFETIME_CONDITION(AWeapon, bUseServerSideRewind, COND_OwnerOnly);
 }
 
 void AWeapon::EnableCustomDepth(bool bEnabled)
@@ -190,6 +191,11 @@ void AWeapon::OnWeaponStateSet()
 	}
 }
 
+void AWeapon::OnPingTooHigh(bool bPingTooHigh)
+{
+	bUseServerSideRewind = !bPingTooHigh;
+}
+
 void AWeapon::OnRep_WeaponState()
 {
 	OnWeaponStateSet();
@@ -209,6 +215,16 @@ void AWeapon::OnEquipped()
 		WeaponMesh->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);
 	}
 	EnableCustomDepth(false);
+
+	OwnerCharacter = OwnerCharacter == nullptr ? Cast<ABlasterCharacter>(GetOwner()) : OwnerCharacter;
+	if (OwnerCharacter && bUseServerSideRewind)
+	{
+		OwnerController = OwnerController == nullptr ? Cast<ABlasterPlayerController>(OwnerCharacter->Controller) : OwnerController;
+		if (OwnerController && HasAuthority() && !OwnerController->HighPingDelegate.IsBound())
+		{
+			OwnerController->HighPingDelegate.AddDynamic(this, &AWeapon::OnPingTooHigh);
+		}
+	}
 }
 
 void AWeapon::OnEquippedSecondary()
@@ -230,6 +246,15 @@ void AWeapon::OnEquippedSecondary()
 		WeaponMesh->SetCustomDepthStencilValue(CUSTOM_DEPTH_TAN);
 		WeaponMesh->MarkRenderStateDirty();
 	}
+	OwnerCharacter = OwnerCharacter == nullptr ? Cast<ABlasterCharacter>(GetOwner()) : OwnerCharacter;
+	if (OwnerCharacter && bUseServerSideRewind)
+	{
+		OwnerController = OwnerController == nullptr ? Cast<ABlasterPlayerController>(OwnerCharacter->Controller) : OwnerController;
+		if (OwnerController && HasAuthority() && OwnerController->HighPingDelegate.IsBound())
+		{
+			OwnerController->HighPingDelegate.RemoveDynamic(this, &AWeapon::OnPingTooHigh);
+		}
+	}
 }
 
 void AWeapon::OnDropped()
@@ -247,6 +272,16 @@ void AWeapon::OnDropped()
 	WeaponMesh->SetCustomDepthStencilValue(CUSTOM_DEPTH_BLUE);
 	WeaponMesh->MarkRenderStateDirty();
 	EnableCustomDepth(true);
+
+	OwnerCharacter = OwnerCharacter == nullptr ? Cast<ABlasterCharacter>(GetOwner()) : OwnerCharacter;
+	if (OwnerCharacter && bUseServerSideRewind)
+	{
+		OwnerController = OwnerController == nullptr ? Cast<ABlasterPlayerController>(OwnerCharacter->Controller) : OwnerController;
+		if (OwnerController && HasAuthority() && OwnerController->HighPingDelegate.IsBound())
+		{
+			OwnerController->HighPingDelegate.RemoveDynamic(this, &AWeapon::OnPingTooHigh);
+		}
+	}
 }
 
 

Source/Blaster/Weapon/Weapon.h

@@ -127,7 +127,7 @@ protected:
 	UPROPERTY(EditAnywhere)
 	float Damage = 20.f;
 
-	UPROPERTY(EditAnywhere)
+	UPROPERTY(Replicated, EditAnywhere)
 	bool bUseServerSideRewind = false;
 	
 	UPROPERTY()
@@ -136,6 +136,9 @@ protected:
 	UPROPERTY()
 	class ABlasterPlayerController* OwnerController;
 
+	UFUNCTION()
+	void OnPingTooHigh(bool bPingTooHigh);
+	
 private:
 	UPROPERTY(VisibleAnywhere, Category = "Weapon Properties")
 	USkeletalMeshComponent* WeaponMesh;