开始开发大厅烹饪功能

Content/Lua/Utils/Emitter.lua

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+local Emitter = {
+    EventHandlers = {}
+}
+
+-- 注册事件监听
+function Emitter.OnEvent(eventName, handler)
+    if not eventName or type(handler) ~= "function" then
+        print("[EventSystem] Invalid event registration")
+        return
+    end
+
+    if not Emitter.EventHandlers[eventName] then
+        Emitter.EventHandlers[eventName] = {}
+    end
+
+    table.insert(Emitter.EventHandlers[eventName], handler)
+    return handler -- 返回handler用于注销
+end
+
+-- 触发事件
+function Emitter.EmitEvent(eventName, ...)
+    local handlers = Emitter.EventHandlers[eventName]
+    if not handlers then return end
+
+    print("[EventSystem] Emitting event: " .. eventName)
+    for i = #handlers, 1, -1 do -- 倒序遍历允许在回调中移除事件
+        local success, err = pcall(handlers[i], ...)
+        if not success then
+            print("[EventSystem] Error in handler: " .. tostring(err))
+        end
+    end
+end
+
+-- 注销事件
+function Emitter.OffEvent(eventName, handler)
+    local handlers = Emitter.EventHandlers[eventName]
+    if not handlers then return end
+
+    for i = #handlers, 1, -1 do
+        if handlers[i] == handler then
+            table.remove(handlers, i)
+        end
+    end
+
+    if #handlers == 0 then
+        Emitter.EventHandlers[eventName] = nil
+    end
+end
+
+
+
+
+return Emitter