Expose variable to BP in an inherited component?

Unreal Courses Talk
#1

Two questions:

First I was trying to expose a new variable in the TankAimingComponent.h file.

I set it up like this:

UPROPERTY(EditDefaultsOnly, Category = Firing)
	bool UseHighArc = false;

I compiled but the aiming component still shows none of its properties in the blueprint window. Is there a way to fix this or is there a better solution. I thought about adding the variable in the tank.h and the referencing that, but I couldn’t figure out how to get that working either.

My second question is; when placing and moving objects in unreal is there a way to get that object to snap to the surface under the cursor. I know about END, but that’s only good for the ground and you have to have aligned the object already in the horizontal axis.

Thanks!

#2

Did you select the AimingComponent in the details panel within Unreal?

#3

Hey Dan.
I selected the Aiming Component in the Blueprint editors components tree, the details pane is blank

948×527 83 KB

Thank you

#4

Oh, later on when Ben changes it to adding the AimingComponent in the blueprint rather than C++ you should be able to modify it. Not sure what combination you need to get it to appear there from inheriting it from C++. I tried the obvious UPROPERTY specifiers with no luck.

#5

Ahh ok at least I’ll be able to do what I want then. Would love to know if there is any other way though. I guess you can get mostly the same results by adding it via blueprint and hiding the categories you don’t want designers tweaking.

Cheers

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