Lua监听事件观察者模式(多个监听者监听)

1 -- 事件ID
2 -- 可配置与配置表中（TODO）
3 activity_manager.activityEventId = {}
4 activity_manager.activityEventId.EVENT_TEST = 1;
5 
6 -- 事件表
7 local event_tb = {}

 1 function activity_manager:registerEventListener(layerName,eventId,func)
 2     if type(eventId) ~= "number" then
 3         print(‘ROORR:: activityEventId 参数非法‘)
 4         return
 5     end
 6 
 7     if event_tb[eventId] ~= nil then
 8         local _samelayer = false
 9         for k,v in pairs(event_tb[eventId].monitor) do
10             if v.layerName == layerName then
11                 print(‘WARNING:: eventId和layerName都一样前面的注册信息会被覆盖‘,layer)
12                 _samelayer = true
13                 v.func = func
14             end
15         end
16         if not _samelayer then
17             local _monitor = {}
18             _monitor.layerName = layerName
19             _monitor.func = func
20             table.insert(event_tb[eventId].monitor,_monitor)
21         end
22     else
23         event_tb[eventId] = {}
24         event_tb[eventId].monitor = {}
25         local _monitor = {}
26         _monitor.layerName = layerName
27         _monitor.func = func
28         table.insert(event_tb[eventId].monitor,_monitor)
29     end
30 end

1 function activity_manager:releaseEventListener(layerName,eventId)
2     for v in pairs(event_tb[eventId].monitor) do
3         if v.layerName == layerName then
4             v = nil
5         end
6     end
7 end

1 function activity_manager:releaseEventListenerByName(layerName)
2     for v in pairs(event_tb) do
3         for _monitor in pairs(v.monitor) do
4             if _monitor.layerName == layerName then
5                 _monitor = nil
6             end
7         end
8     end
9 end

 1 function activity_manager:dispatchEvent(eventId,args)
 2     if type(eventId) ~= "number" then
 3         print(‘ROORR:: activityEventId 参数非法‘)
 4         return
 5     end
 6 
 7     if event_tb[eventId] == nil then
 8         print(‘ROORR:: activityEventId 参数不存在‘)
 9         return
10     end
11 
12     for k,v in pairs(event_tb[eventId].monitor) do
13         local func = v.func
14         local layerName = v.layerName
15         func(args)
16     end
17 end

1 function activity_manager:fireEvent(eventId,args)
2     if not event_tb or not next(event_tb) then return end
3     local co = coroutine.create( function(eventId,args) 
4         self:dispatchEvent(eventId,args)
5     end)
6 
7     local status,msg = coroutine.resume(co,args)
8     assert(status,msg)
9 end