I’m creating a 3D HUD with several on/off indicators. The first six are updated every tick and work perfectly. The others are triggered by a variable change in another blueprint through an interface. Everything appears to be communicated properly, the integer variable being passed from the other blueprint is accurate when I try to debug with breakpoints, and the Set Vector/Scalar Parameter nodes even claim to be firing, but the actual materials refuse to change. I do understand it’s a bit turgid. The goal for the set that is not working is to light up the bullet type that is currently in use.
Turns out you can’t successfully cast to a variable in a blueprint reference inside the TPCharacter blueprint. Something was out of scope by the time the material function was called. I mimicked the functions I was using inside the gun blueprint directly in the TPCharacter and called the function from there. It seems to work perfectly now.
