cannot override TickVehicle

Development Programming & Scripting C++
1

Hi,

Im trying to override the TickVehicle function, but it is never called?




class MY_API UMyWheeledVehicleMovementComponent: public UWheeledVehicleMovementComponent
{
	GENERATED_BODY()

virtual void TickVehicle(float DeltaTime) override;

}

is this perhaps because the vehicle manager might fire the function still on the baseclass ?



PhysXVehicleManager.h
// All instanced vehicles
TArray<TWeakObjectPtr<class UWheeledVehicleMovementComponent>>			Vehicles;
2

I edited the code to what i have now, but still not working.

Anyone could help? thanks

3

Can you show us your .cpp? If Tick functions aren’t called, I’ve found it can be because you forgot to call Super::BeginPlay() in BeginPlay.

When you override a virtual function, the implementation in your child class will definitely be used.

4

Hi, thanks for the reply

The .cpp code i have might be as expected:




void UMyWheeledVehicleMovementComponent::TickVehicle(float DeltaTime)
{

	Super::TickVehicle(DeltaTime);
	UE_LOG(LogTemp, Warning, TEXT(">>> TickVehicle<<<"));

}

The ue_log is not showing up…

I do not have BeginPlay implemented. Why would that matter?

5

Because with regular ticks, if Super::BeginPlay() isn’t called, the actor / component will never tick. However, since you don’t override it, it’s fine.

I just checked the API, and neither UWheeledVehicleMovementComponent nor any of its parents or interfaces has a TickVehicle function. Are you sure you’re not supposed to be overriding TickComponent instead?

6

Okay well, the UWheeledVehicleMovementComponent api indeed has no TickVehicle… wierd.

However, in the class:

//WheeledVehicleMovmentComponent.h




/** Tick this vehicle sim right before input is sent to the vehicle system  */
virtual void TickVehicle( float DeltaTime );

//WheeledVehicleMovmentComponent.cpp




void UWheeledVehicleMovementComponent::TickVehicle( float DeltaTime )
{
	if (AvoidanceLockTimer > 0.0f)
	{
		AvoidanceLockTimer -= DeltaTime;
	}

	// movement updates and replication
	if (PVehicle && UpdatedComponent)
	{
		APawn* MyOwner = Cast<APawn>(UpdatedComponent->GetOwner());
		if (MyOwner)
		{
			UpdateSimulation(DeltaTime);
		}
	}

	// update wheels
	for (int32 i = 0; i < Wheels.Num(); i++)
	{
		Wheels*->Tick(DeltaTime);
	}

	UpdateDrag(DeltaTime);
}

I need to be able to only use the wheels and implement my own movement inside TickVehicle

is there any way how i could do that?

This VehicleTick function is being called inside the vehicle manager:

//PhysXVehicleManager.cpp

inside the Update function:



// Tick vehicles
{
	SCOPE_CYCLE_COUNTER(STAT_PhysXVehicleManager_TickVehicles);
	for (int32 i = Vehicles.Num() - 1; i >= 0; --i)
	{
		Vehicles*->TickVehicle(DeltaTime);
	}
}
7

Since 4.16 (or lower) there is a TickVehicle… But still im not able to override it.

UWheeledVehicleMovementComponent