I’m trying to learn what “collisiion groups” are but i’m getting no information, i’m trying to like make it so ONLY the grey part and the train can “collide” but i can still walk through them despite having proper settings.
Same settings for Fog too.
What do you mean exactly, by that you can “still go through them”? Yes indeed with the current collision setup, you can walk through the Train and the GrayPart, since everything not set to a custom collision group, will be placed into the default one.
The player is automatically under the default collision group when they spawn.