init

player/scripts/player_state_machine.gd

@@ -0,0 +1,46 @@
+class_name PlayerStateMachine extends Node
+
+var states: Array[State]
+var previous_state: State
+var current_state: State
+
+func _ready() -> void:
+	process_mode = Node.PROCESS_MODE_DISABLED
+
+func _process(delta: float) -> void:
+	change_state(current_state.process(delta))
+
+func _physics_process(delta: float) -> void:
+	change_state(current_state.process(delta))
+
+func _unhandled_input(event) -> void:
+	change_state(current_state.handle_input(event))
+
+func initialize(player: Player) -> void:
+	states = []
+	for child in get_children():
+		if child is State:
+			states.append(child)
+	if states.is_empty():
+		return
+
+	var firstState = states[0]
+	firstState.player = player
+	firstState.state_machine = self
+
+	for state in states:
+		state.init()
+
+	change_state(firstState)
+	process_mode = Node.PROCESS_MODE_INHERIT
+
+func change_state(new_state: State) -> void:
+	if new_state == null or new_state == current_state:
+		return
+
+	if current_state:
+		current_state.exit()
+	
+	previous_state = current_state
+	current_state = new_state
+	current_state.enter()