Getting Spring Arm Component from Input Component

Development Programming & Scripting
1

Hello all,

I am currently trying to get the spring arm component from a pawn using an input controller. I get the actor using:

//Get the pawn
APawn* Pawn = Cast<APawn>(this->GetPawn());

Which appears to work fine, but upon trying to get the spring arm, a child of the pawn, I tried using these two methods of getting it.

//Method 1
TArray<class USpringArmComponent> SpringArm;
SpringArm = Pawn->GetComponents<USpringArmComponent>();

//Method 2 as there is only 1 spring arm
class USpringArmComponent* BoomArm = FindComponentByClass<USpringArmComponent>();

Method 1 returns an error of “pointer to incomplete class type is not allowed”, and method 2 returns a statement from the engine saying it may only be called from an actor.

I’m doing this to try and create a pinch to zoom function for touch screen computers.

2

You can cast your Pawn to be the Type you have made that has the spring arm then access it directly.

3

Casting the pawn to the player controller made no difference in finding the spring arm component. Evidently I cant use FindComponentByClass because USpringArmComponent doesnt derive from actor.

4

The problem was I was trying to access the camera from a bp pawn, which i did because it was faster to throw a camera and spring arm on that instead of writing the code. After writing the pawn in c++ i had no further issue.