Audio trigger when FPS walks into things, walls, doors etc

Hi there,

Pretty new to Unity and I'm trying to trigger audio, for example a wooden door sound when my FPS walks into it as a one shot. I've tried a few scripts but I can't seem to get it working.

What I've tried:

• Add box collider to the object and add an OnCollisionEnter script with the audio source added.

• Added audio directly to the building and put a collision script on the FPS.

The question is, what do I add where? Do I add an audio source to the building and tell the FPS what to do. Or am I meant to add a box collider so that when my FPS walks into the area it triggers a one shot?

Sorry, only working with Unity a short time, if this is a bit silly/simple, I understand!

Hope someone can help!

:)