1 files changed, 55 insertions, 0 deletions
diff --git a/bin/EventMsgCenter/EventMsgCenter.lua b/bin/EventMsgCenter/EventMsgCenter.lua
new file mode 100644
index 0000000..7b944c2
--- /dev/null
+++ b/bin/EventMsgCenter/EventMsgCenter.lua
@@ -0,0 +1,55 @@
+local EventMsgCenter = {} 
+
+-- <event, {callbacks}>
+local _broadcast = {}
+
+EventMsgCenter.registerMsg = function(e, callback, first) 
+	if _broadcast[e] == nil then 
+		_broadcast[e] = {} 
+	end
+	first = first or false
+	EventMsgCenter.unregisterMsg(e, callback)
+	if not first then 
+		table.insert(_broadcast[e], callback)
+	else 
+		table.insert(_broadcast[e], 1, callback)
+	end 
+end 
+
+local removeElement = function(t, e)
+	for i, v in ipairs(t) do 
+		if v == e then 
+			table.remove(t, i)
+			break
+		end 
+	end 
+end 
+
+EventMsgCenter.unregisterMsg = function(e, callback)
+	if _broadcast[e] == nil or callback == nil then 
+		return 
+	end 
+	removeElement(_broadcast[e], callback)
+end 
+
+EventMsgCenter.unregisterAllMsgByEvent = function(e)
+	_broadcast[e] = nil
+end 
+
+EventMsgCenter.unregisterAllMsg = function() 
+	_broadcast = {}
+end 
+
+EventMsgCenter.sendMsg = function(e, ...)
+	local callbacks = _broadcast[e]
+	if callbacks == nil then 
+		return 
+	end 
+	for _, f in ipairs(callbacks) do 
+		if f ~= nil then 
+			f(...)
+		end 
+	end 
+end 
+
+return EventMsgCenter
+\ No newline at end of file