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sidescroller/scripts/State Machine.gd

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+extends Node
+
+@export var player: Node  # In Godot im Inspector zuweisen!
+@export var initial_state : State
+
+var current_state : State
+
+var states : Dictionary = {}
+
+func _ready():
+	for child in get_children():
+		if child is State:
+			states[child.name.to_lower()] = child
+			child.Transitioned.connect(on_child_transitioned)
+			child.player = player
+			
+	if initial_state:
+		initial_state.enter()
+		current_state = initial_state
+
+func _process(delta):
+	if current_state:
+		current_state.update(delta)
+		
+func _physics_process(delta):
+	if current_state:
+		current_state.physics_update(delta)
+		
+func on_child_transitioned(state, new_state_name):
+	if state != current_state:
+		return
+
+	var new_state = states.get(new_state_name.to_lower())
+	if !new_state:
+		return
+		
+	if current_state:
+		current_state.exit()
+		
+	new_state.enter()
+	
+	current_state = new_state