chore：完善项目目录结构和基础框架

- 添加核心系统框架目录结构
- 创建游戏模块化组织架构
- 添加数据配置和本地化支持
- 建立脚本分类管理体系
- 创建场景预制件管理目录

core/systems/EventSystem.gd

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+extends Node
+
+# 全局事件系统 - 提供解耦的事件通信机制
+# 允许不同模块之间通过事件进行通信，避免直接依赖
+
+# 事件监听器存储
+var event_listeners: Dictionary = {}
+
+func _ready():
+	print("EventSystem 初始化完成")
+
+# 注册事件监听器
+func connect_event(event_name: String, callback: Callable, target: Node = null):
+	if not event_listeners.has(event_name):
+		event_listeners[event_name] = []
+	
+	var listener_info = {
+		"callback": callback,
+		"target": target
+	}
+	
+	event_listeners[event_name].append(listener_info)
+	print("注册事件监听器: ", event_name, " -> ", callback)
+
+# 移除事件监听器
+func disconnect_event(event_name: String, callback: Callable, target: Node = null):
+	if not event_listeners.has(event_name):
+		return
+	
+	var listeners = event_listeners[event_name]
+	for i in range(listeners.size() - 1, -1, -1):
+		var listener = listeners[i]
+		if listener.callback == callback and listener.target == target:
+			listeners.remove_at(i)
+			print("移除事件监听器: ", event_name, " -> ", callback)
+			break
+
+# 发送事件
+func emit_event(event_name: String, data: Variant = null):
+	print("发送事件: ", event_name, " 数据: ", data)
+	
+	if not event_listeners.has(event_name):
+		return
+	
+	var listeners = event_listeners[event_name]
+	for listener_info in listeners:
+		var target = listener_info.target
+		var callback = listener_info.callback
+		
+		# 检查目标节点是否仍然有效
+		if target != null and not is_instance_valid(target):
+			continue
+		
+		# 调用回调函数
+		if data != null:
+			callback.call(data)
+		else:
+			callback.call()
+
+# 清理无效的监听器
+func cleanup_invalid_listeners():
+	for event_name in event_listeners.keys():
+		var listeners = event_listeners[event_name]
+		for i in range(listeners.size() - 1, -1, -1):
+			var listener = listeners[i]
+			var target = listener.target
+			if target != null and not is_instance_valid(target):
+				listeners.remove_at(i)
+				print("清理无效监听器: ", event_name)
+
+# 获取事件监听器数量
+func get_listener_count(event_name: String) -> int:
+	if not event_listeners.has(event_name):
+		return 0
+	return event_listeners[event_name].size()
+
+# 清空所有事件监听器
+func clear_all_listeners():
+	event_listeners.clear()
+	print("清空所有事件监听器")

core/systems/EventSystem.gd.uid

@@ -0,0 +1 @@
+uid://csuxtwgni1dmf