How to set a bool on an ActorComponent from an Actor

Development Programming & Scripting C++
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1

Hi there,
First of all, I’m very new to C++. I’m trying to set a bool to true from an Actor in an ActorComponent, but when I run the game, it throws me an error that I can’t figure out. I’m almost pretty sure that the problem is lying in the casting, but still… please, help!

Here is the relevant code from the Actor.h:

actor.h
actor.h1157×332 17 KB

And the Actor.cpp:
actor.cpp

What I’m trying to do in the ActorComponent.h:
actorcomponent.h

And in the ActorComponent.cpp:
actorcomponent.cpp

Basically, in my game there is a turret (the Actor) that rotates if that bool is true. I have another Actor (which has the ActorComponent) that the player can interact with to turn the rotation on.

Also, the error that I’m getting (basically, the Editor crashes)

crash
crash932×750 86 KB

The error referencing the { in the Actor.cpp

Please, help me. I would like to learn from my mistake. Thanks!

2

First thing, Instead of

Turret->ATurret::SetSwitch();

It should be

Turret->SetSwitch();

Secondly,

Since the component is on another actor,

Cast<ATurret>(GetOwner())

will fail since the Owner is not a Turret and the Turret variable will be nullptr, hence the crash when calling SetSwitch.

Since you want the player to interact with (I assume) a button which turns on the turret rotation. I suggest using an Interface instead.

3

You’ll will also want to null check any pointers before using:

Turret* turret = Cast<ATurret>(GetOwner())
if(turret != nullptr)
{
 turret->SetSwitch();
}
4

Thank you! While I was waiting for the approval, I researched it and got it work.

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