Physics2D.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

Parameters

layer1	ID of the first layer.
layer2	ID of the second layer.
ignore	Should collisions between these layers be ignored?

Choose whether to detect or ignore collisions between a specified pair of layers.