C++ GameMode with Blueprint HUD?????????

Development Programming & Scripting C++
7

I did this by using a custom AHUD class and a widget blueprint. The custom AHUD class is specified in my custom GameMode as


HUDClass = AMasterRobotHUD::StaticClass();

The widget blueprint is created using the blueprint editor, so I can use the Unreal interface editor to create buttons etc.

To link it together, in my AMasterRobotHUD class, .h file:


class UClass * hudWidgetClass;
    class UUserWidget * hudWidget;
    virtual void BeginPlay () override;

Then in the constructor:


static ConstructorHelpers::FClassFinder<UUserWidget> hudWidgetObj (TEXT ("/Game/umg/GamePlayHUD_blueprint"));
    if (hudWidgetObj.Succeeded ()) {
        hudWidgetClass = hudWidgetObj.Class;
    } else {
        // hudWidgetObj not found
        hudWidgetClass = nullptr;
    }

You copy the bath to your blue print in the Unreal editor, by right-clicking and “Copy Reference”. Don’t forget to delete the beginning and the end of the reference string to get something similar to what I have above.
Also, add a function into your custom HUD class for when the game starts:


void AMasterRobotHUD::BeginPlay () {
    Super::BeginPlay ();
    if (hudWidgetClass) {
        // the player controller should be constructed by now so we can get a reference to it
        hudWidget = CreateWidget<UUserWidget> (this->GetOwningPlayerController (), this->hudWidgetClass);
        hudWidget->AddToViewport ();
    }
}

I copied the solution from elsewhere, I can’t remember where though anymore! Anyway, also remember that the HUD will ONLY show when you Launch, i.e., it doesn’t show when you Play via the Unreal editor.