Access parent variables and functions through component c++

Development Programming & Scripting
1

Hi,

So after googling around for a bit i havent found anyone asking how to do it in c++ .(i only seen alot of blueprint tuts out there)
I have a Spawner Actor , I attached a custom Actor(ObjectPool) component to it.

How do i actually actually access my spawner’s variables ? I came from a c# background and i don’t think
using Spawner.timeToSpawn will actually get me anything in c++.

Some help would be very appreciated.

2

Are you looking for something like this?

3

Dude, love you thanks so much!

4

try this->GetOwner(),
it will return your parent AActor, then you cast this pointer to your Spawner actor.

So, you will end up having something like this (using c-cast):

MySpawnerActor* parentSpawner = (MySpawnerActor*)this->GetOwner();
parentSpawner ->yourVariable…

5

Hey man i need to ask this…
Lets say if i put that in my BeginPlay()

MySpawnerActor* parentSpawner = (MySpawnerActor*)this->GetOwner();

How would i use it in my other functions ?

void SomeFunction::DoSomething(){
parentSpawner->DosomeMethodB();
}

Cause it seems to not be public among the entire .cpp cause it keeps telling me it is undefined in my other function…

So i actually tried to put it in my .header file

MySpawnerActor* parentSpawner;

I seem to be not understanding something here. Need help on this.
Anyways thanks for being so helpful this far !

6

make this variable as a class member in the .h class definition
class …{
private (or public) MySpawnerActor* parentSpawner;
}

in cpp you will have
parentSpawner = (MySpawnerActor*)this->GetOwner();

7

when u meant make this variable as a class member…
Do you mean this ?

UPROPERTY()
class MySpawnerActor* parentSpawner;

cause the example you gave is exactly like the one i asked which wasn’t working.

8

I suggest you read a basic C++ object oriented tutorial.
A class member is:

class.... {

    public:  (or private:)


             MySpawnerActor* parentSpawner;  //<-- that's a class member.



}

And inside your c++ you get the instance, wherever you want. in the BeginPlay function, for example:

parentSpawner = (MySpawnerActor*)this->GetOwner();