Target selector

Used in an ability's target_selector. After the selector has gathered candidates, the ability still checks target_condition.

Type	Purpose
saturn:self	Targets the user themselves.
saturn:area	Selects targets within a radius, with optional control over the count and the ordering.
saturn:ray	Selects entities near a ray along the user's facing direction.
saturn:cone	Selects targets within a view cone of the given length and angle.
saturn:js	Calls a callback registered by KubeJS and passes the params argument.