Document CollisionObject2D pickable requires collision_layer #28608
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Document CollisionObject2D signals
mouse_entered
,mouse_exited
andinput_event
require at least onecollision_layer
to be set.Sadly,
collision_layer
is implemented, and thus documented in the child classesArea2D
andPhysicsBody2D
(why not in the parent class?), so this might be a source of confusion.Clarifies #11159