Update

demos/10. dynamic save and load/dynamic_save_dialogue.gd

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+extends DialogueEngine
+
+
+const SAVE_PATH : String = "user://save.dat"
+var counter : int = 0
+var start_counting_id : int = 0
+var log_history : Array = []
+
+
+func _setup() -> void:
+	add_text_entry("This is an example of an infinite dynamically generated/saved/loaded dialogue.")
+	add_text_entry("You can save the dialogue progress at any time by clicking the save button above.")
+	add_text_entry("And when you restart this scene, the dialogue will continue from where it left off.")
+	add_text_entry("As the dialogue progresses, the graph in the debugger will update automatically as well.")
+	add_text_entry("Let's count to infinity!!")
+	dialogue_continued.connect(__log_history)
+	dialogue_about_to_finish.connect(__continue_counting)
+
+	# Load previous state if any
+	load_state()
+
+
+func __log_history(p_dialogue_entry : DialogueEntry) -> void:
+	# Always track the log history:
+	log_history.push_back(p_dialogue_entry.get_formatted_text())
+
+func __continue_counting() -> void:
+	counter += 1
+	add_text_entry(str(counter))
+
+
+func save_state() -> void:
+	var file_handle: FileAccess = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	file_handle.store_var(counter)
+	file_handle.store_var(get_current_entry().get_id())
+	file_handle.store_var(log_history)
+	print("State Saved")
+
+
+func load_state() -> void:
+	if FileAccess.file_exists(SAVE_PATH):
+		var file_handle: FileAccess = FileAccess.open(SAVE_PATH, FileAccess.READ)
+		counter = file_handle.get_var()
+		var entry_id : int = file_handle.get_var()
+		if has_entry_id(entry_id):
+			set_current_entry(entry_id)
+		else:
+			set_current_entry(add_text_entry("Let's continue counting!!").get_id())
+		log_history = file_handle.get_var()
+		print("State Loaded")
+
+
+func clear_state() -> void:
+	if FileAccess.file_exists(SAVE_PATH):
+		DirAccess.remove_absolute(SAVE_PATH)
+		print("State Cleared")