How to create metallic reflection on surfaces?

[czettnersandor]

Hi, I'm currently enjoying Bevy for my side project and I have a question I can't solve the past few days. I want the coins to imitate a polished gold surface. I added EnvironmentMapLight, but it's making shadows barely visible, and it's giving me too much light.

If I remove the EnvironmentMapLight, then the metallic surfaces are just flat color. What can I do to make this work? I understand the metal needs to reflect something, but how can I do it without that something affecting the whole world?

I think I'll need a custom shader for this, but I'm not sure where to start.

See attached with and without EnvironmentMapLight to see what I mean. I added the balls to debug this issue easier:

[DavidHospital]

If you're using a StandardMaterial for your coins, try playing around with some of the settings (metallic, reflectance, etc.). The existing PBR shader for StandardMaterial should handle the complex lighting automatically.