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firebelley/callable_state_machine.gd

Created August 27, 2024 21:18
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Revisions

  1. firebelley revised this gist Aug 27, 2024. No changes.
  2. firebelley revised this gist Aug 27, 2024. No changes.
  3. firebelley created this gist Aug 27, 2024.
    49 changes: 49 additions & 0 deletions callable_state_machine.gd
    View file
    Original file line number Diff line number Diff line change
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    class_name CallableStateMachine

    var state_dictionary = {}
    var current_state: String


    func add_states(
    normal_state_callable: Callable,
    enter_state_callable: Callable,
    leave_state_callable: Callable
    ):
    state_dictionary[normal_state_callable.get_method()] = {
    "normal": normal_state_callable,
    "enter": enter_state_callable,
    "leave": leave_state_callable
    }


    func set_initial_state(state_callable: Callable):
    var state_name = state_callable.get_method()
    if state_dictionary.has(state_name):
    _set_state(state_name)
    else:
    push_warning("No state with name " + state_name)


    func update():
    if current_state != null:
    (state_dictionary[current_state].normal as Callable).call()


    func change_state(state_callable: Callable):
    var state_name = state_callable.get_method()
    if state_dictionary.has(state_name):
    _set_state.call_deferred(state_name)
    else:
    push_warning("No state with name " + state_name)


    func _set_state(state_name: String):
    if current_state:
    var leave_callable = state_dictionary[current_state].leave as Callable
    if !leave_callable.is_null():
    leave_callable.call()

    current_state = state_name
    var enter_callable = state_dictionary[current_state].enter as Callable
    if !enter_callable.is_null():
    enter_callable.call()