Error when setting Outer Cone spotlight angle

Development Programming & Scripting
1

Hi, i’m getting errors when i’m trying to set the outer cone angle on one of the spotlights i have created with c++.

This is the error i’m getting.
Error 1 error LNK2019: unresolved external symbol “public: void __cdecl ASpotLight::SetOuterConeAngle(float)” (?SetOuterConeAngle@ASpotLight@@QEAAXM@Z) referenced in function “public: virtual void __cdecl ALightOrigin::BeginPlay(void)” (?BeginPlay@ALightOrigin@@UEAAXXZ) C:\Users\Documents\Unreal Projects\Temple\Intermediate\ProjectFiles\LightOrigin.cpp.obj

And this is my code for creating and setting the angle of the cone.

void ALightOrigin::BeginPlay()
{
	Super::BeginPlay();

	ASpotLight* SpotLightTemp;
	SpotLightTemp = GWorld->SpawnActor<ASpotLight>(ASpotLight::StaticClass());
	SpotLightTemp->SetEnabled(false);
	SpotLightTemp->SetBrightness(Brightness);
	SpotLightTemp->SetOuterConeAngle(2.0f);
	SpotLightTemp->SetMobility(EComponentMobility::Movable);
	SpotLightTemp->AttachRootComponentToActor(this);
	SpotLightTemp->SetActorLocation(GetActorLocation());
	SpotLightTemp->SetActorRotation(GetActorRotation());
	SpotLights.Add(SpotLightTemp);
}

Is this a bug or am i doing something wrong?

2

Found this in the ASpotLight class header.

// BEGIN DEPRECATED (use component functions now in level script)
UFUNCTION(BlueprintCallable, Category="Rendering|Lighting", meta=(DeprecatedFunction))
void SetInnerConeAngle(float NewInnerConeAngle);
UFUNCTION(BlueprintCallable, Category="Rendering|Lighting", meta=(DeprecatedFunction))
void SetOuterConeAngle(float NewOuterConeAngle);
// END DEPRECATED

How do i access the component functions that are apparently in level script?

3

It also says it’s deprecated, which means that it shouldn’t be used and will be removed in a future release. I don’t see anything listed in the documentation that could replace it, though.

I LOVE that comment, any idea what it means? It sounds like that functionality got moved to another place, but it’s not obvious to me where it is.

4

I’m quite confused as to why they would remove such an important variable from the spotlight class and move it to another location. Thanks for explaining what deprecated stood for though. :slight_smile:

5

Did you ever figure out a replacement for this? It’s 2017, Unreal 4.14, and the “deprecated” function is still in the header, still causing unresolved issues, and I can’t find any replacement suggested anywhere.