BindAxis function delegate with more than one parameter?

Development Programming & Scripting C++
, , ,
1

Is there a way to have two parameters, instead of the usual float parameter, for delegate functions of an Axis input? It is like the solution given here, but with a BindAxis? Like:

void ARecActor::SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent)
{
		PlayerInputComponent->BindAxis("MoveForward", this, &AnActor::InputAxisDelegate, secondParameter);
}

void AnActor::InputAxisDelegate(float AxisVal, FString Something)
{
	if (AxisVal != 0 && GEngine)
	{
		GEngine->AddOnScreenDebugMessage(-1,1.0f,FColor::Magenta, Something);
	}
}

This won’t compile, as it is expected that delegates for Axis inputs must have only one float argument.
Template parameters (as explained in here) won’t work either, as the BindAxis method only accepts 3 parameters.

2

Thank you for your help!

I tried this:

FInputAxisBinding AxisBindingOneParam(AxisName);
 FInputAxisHandlerSignature OneParamAxisHandler;
 OneParamAxisHandler.BindUObject(this, &ARecActor::BindInputAxisEvents, AxisName);
 FInputAxisUnifiedDelegate AxisDelegate;
 AxisDelegate.BindDelegate(this, "OneParamAxisHandler");
 AxisBindingOneParam.AxisDelegate = AxisDelegate;
 PlayerInputComponent->AxisBindings.Add(AxisBindingOneParam);

It is compiling, but the BindInputAxisEvent is not being called. I had to adapt line 4. from your example, because the Axis delegate is of a different type (UnifiedDelegate), so maybe my adaptation is doing something wrong?

3

Hello! You can take a look at this example and create an analog for axis binding

		FInputActionBinding ActionBindingOneParam(ActionName, IE_Pressed);
		FInputActionHandlerSignature OneParamActionHandler;
		OneParamActionHandler.BindUObject(this, &AMyCharacter::OnActionPressed, MyParam);
		ActionBindingOneParam.ActionDelegate = OneParamActionHandler;
		PlayerInputComponent->AddActionBinding(ActionBindingOneParam);
4

I don’t know if this is still relevant, but here’s the solution.

void AMyPawn::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
Super::SetupPlayerInputComponent(PlayerInputComponent);
FString AxisNmae = “YourAxisMappingName”;
int32 SentValue = 1;

  TestBind.AxisDelegate.GetDelegateForManualSet().BindLambda([this, SentValue](float AxisValue) {
HandleAxis(AxisValue, SentValue);
  });
 PlayerInputComponent->AxisBindings.Add(TestBind);

}

void AMyPawn::HandleAxis(float AxisValue, int32 SentValue)
{
// Your code…
}