Movable Behavior functions
make_custom_behavior
function make_custom_behavior(behavior_name: string, state_id: integer, base_behavior?: VanillaMovableBehavior): CustomMovableBehavior?behavior_name:stringstate_id:integerbase_behavior?:VanillaMovableBehavioroptional
Returns CustomMovableBehavior? (may be nil)
Make a CustomMovableBehavior, if base_behavior is nil you will have to set all of the
behavior functions. If a behavior with behavior_name already exists for your script it will
be returned instead.