创建新工程

scripts/GameStateManager.gd

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+extends Node
+class_name GameStateManager
+## 游戏状态管理器
+## 负责管理游戏的全局状态和场景切换
+
+# 游戏状态枚举
+enum GameState {
+	LOGIN,              # 登录状态
+	CHARACTER_CREATION, # 角色创建状态
+	IN_GAME,           # 游戏中
+	DISCONNECTED       # 断线状态
+}
+
+# 信号定义
+signal state_changed(old_state: GameState, new_state: GameState)
+
+# 当前状态
+var current_state: GameState = GameState.LOGIN
+
+# 玩家数据
+var player_data: Dictionary = {}
+
+# 数据文件路径
+const SAVE_PATH = "user://player_data.json"
+
+func _ready():
+	print("GameStateManager initialized")
+	print("Initial state: ", GameState.keys()[current_state])
+	
+	# 尝试加载玩家数据
+	load_player_data()
+
+func change_state(new_state: GameState) -> void:
+	"""切换游戏状态"""
+	if new_state == current_state:
+		return
+	
+	var old_state = current_state
+	current_state = new_state
+	
+	print("State changed: ", GameState.keys()[old_state], " -> ", GameState.keys()[new_state])
+	state_changed.emit(old_state, new_state)
+
+func save_player_data() -> void:
+	"""保存玩家数据到本地"""
+	var file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	if file:
+		var json_string = JSON.stringify(player_data)
+		file.store_string(json_string)
+		file.close()
+		print("Player data saved")
+	else:
+		print("Failed to save player data")
+
+func load_player_data() -> Dictionary:
+	"""从本地加载玩家数据"""
+	if not FileAccess.file_exists(SAVE_PATH):
+		print("No saved player data found")
+		return {}
+	
+	var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
+	if file:
+		var json_string = file.get_as_text()
+		file.close()
+		
+		var json = JSON.new()
+		var parse_result = json.parse(json_string)
+		
+		if parse_result == OK:
+			player_data = json.data
+			print("Player data loaded: ", player_data.keys())
+			return player_data
+		else:
+			print("Failed to parse player data")
+	else:
+		print("Failed to open player data file")
+	
+	return {}
+
+func clear_player_data() -> void:
+	"""清除玩家数据"""
+	player_data.clear()
+	if FileAccess.file_exists(SAVE_PATH):
+		DirAccess.remove_absolute(SAVE_PATH)
+	print("Player data cleared")