Angular equivelent of APawn::GetVelocity

Development Programming & Scripting
1

Is there a simple way to get the current angular velocity of a pawn?

2

As far as I know, there isn’t an API call to do this. So the way I implemented this was, at every tick I cached the current rotation. Using (current_rotation - previous_rotation) / DeltaSeconds … will give the necessary angular velocity.

So the pseudo code would look something like this

class AMyActor :: public AActor
{
   private:
     FRotator mPrevRot;

   BeginPlay()
   {
      mPrevRot = GetActorRotation();
   }

   Tick(float DeltaSeconds)
   {
      FRotator currentRot = GetActorRotation();
      FRotator changeInRot = currentRot - mPrevRot;
      FRotator angularVelocity = changeInRot / DeltaSeconds;

      mPrevRot = currentRot;
   }
}

Ofcourse you would need the correct function signatures and also you would want to encapsulate this into a function. Hope that helped!

3

There is an angular velocity on the physics body instance. Blueprints even have a Get/SetAngularVelocity which just calls UPrimitiveComponent::GetPhysicsAngularVelocity(FName BoneName). The BoneName isn’t needed and will default to “None” and return the default BodyInstance.