Physics.IgnoreLayerCollision
static function IgnoreLayerCollision(layer1: int, layer2: int, ignore: bool = true): void;
static void IgnoreLayerCollision(int layer1, int layer2, bool ignore = true);
static def IgnoreLayerCollision(layer1 as int, layer2 as int, ignore as bool = true) as void
Description

Makes the collision detection system ignore all collisions between any collider in layer1 and any collider in layer2.

You can set the default values for your project for any layer combinations in the Physics inspector. See Also: Physics.GetIgnoreLayerCollision,Physics.IgnoreCollision.