What I want to do is know if player is in shadows because Im making a race for my game that player cant go outside a cave or something and if he go outside he will burn because of sun. And to he dont get burned he would need be in a shadow.
The best bet is checking if the player is in between the sun and the player.
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For your particular use case though, you could probably just make an invisible touch box where if they’re outside the cave they can be burnt. That’d be far simpler.