Cannot change light color at runtime

Development Rendering
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1

void AFPSCharacter::SetLightsColor(float R, float G, float B)
{
FString strPreFix = “light_”;
bool bsucess = false;
TActorIterator AllActorsItr = TActorIterator(GetWorld());
while (AllActorsItr)
{
FString strName = AllActorsItr->GetName();
if (strName.Contains(strPreFix, ESearchCase::CaseSensitive))
{
bsucess = true;
AllActorsItr->SetLightColor(FLinearColor(FColor(R,G,B)));
}
++AllActorsItr;
}
if (bsucess)
{
ScreenMsg(“changed color”);
}
else
{
ScreenMsg(“no changed color”);
}
}

i
use these code to change all lights color. run in editer it’s ok.
but run in package game,no effect.what’s wrong…
i also make a development package,it always say “changed color”,but no effect,the color not changed.

2

Hey there, you can try to make a development packaged build and put prints in a few places to see where it doesn’t print, probably its the Contains, but if you print the values you are comparing it might help understanding why it doesn’t execute.

3

this code executed,but no effect.
i add this code to the end for this func. can control Rotation,but still cannot change the color.
this->GetController()->SetControlRotation(FRotator(R, G, B));
i have set all light “moveable”

4

this code executed,but no effect. i add this code to the end for this func. can control Rotation,but still cannot change the color. this->GetController()->SetControlRotation(FRotator(R, G, B)); i have set all light “moveable”.
and i also make a development packaged,code executed,but no effect…

5

i solved this problem.
i rename all the lights like this light_1,light_2,light_3…
in debug model,GetName() return the correct name.
but in other model,GetName() return Light_1,Light_2,Light_3…

i dont know if this is a bug, i control other actor by name all work perfect.it’s always return the name what i set.
but,do with light, the first letter is upper case.

6

So you are sure that SetLightColor executes on the packaged build, it just doesn’t produce any effect? See if calling MarkRenderStateDirty() on the light component inside the ALight does anything.