[游戏开发]【功能】Unity 红点系统

项目需求：提供一个共用的红点功能

设计：注册与反注册的管理器，定义红点枚举类型

? ? ? ? ? ?连接管理器的基类，基类中提供外部调用的接口

实现：

--红点类型
RedDotMgrType =
{
	MailPanel_Red = 1,			--邮件系统
}

---@private
function RedDotMgr:ctor()
	self:Clear()
end

---@private
function RedDotMgr:Clear()
	self.msgMap = {}
	self.MsgNum = {}
end

---@private
function RedDotMgr:OnDestroy()
	self:Clear()
end

---@public 注册
---@param type RedDotMgrType  消息类型
function RedDotMgr:regEvent(type, obj, func)
	local Num = self.MsgNum[type] or 0
	if not self.msgMap[type] then
		self.msgMap[type] = {}
	else
		for i,v in pairs(self.msgMap[type]) do
			if v.obj == obj and v.func == func then
				error(string.format(" RedDotMgr duplicate add type:%s", tostring(type)))
			end
		end
	end
	table.insert(self.msgMap[type], { obj = obj, func = func })
	if func then
		func(obj, Num)
	end
end

---@public 反注册
---@param type RedDotMgrType  消息类型
function RedDotMgr:unRegEvent(type, obj)
	if self.msgMap[type] then
		for i,v in pairs(self.msgMap[type]) do
			if v.obj == obj then
				table.remove(self.msgMap[type], i)
				break
			end
		end
	end
end

---@public 通知刷新
---@param type RedDotMgrType  消息类型
function RedDotMgr:sendEvent(type, num)
	self.MsgNum[type] = num
	if self.msgMap[type] then
		for i,v in pairs(self.msgMap[type]) do
			if v.obj then
				v.func(v.obj, num)
			end
		end
	end
end

---@public 获取红点数
---@param type RedDotMgrType  消息类型
function RedDotMgr:GetNum(type)
	if self.MsgNum[type] ~= nil then
	   return self.MsgNum[type]
	end
	return 0
end

function RedHint:ResetData()
	self.type = nil
	self.num.text.text = ""
	self.numBg:SetActive(false)
end

---@public 初始化
---@param RedDotMgrType  消息类型
function RedHint:Init(type, isShow)
	if self.type ~= nil then
		RedDotMgr:unRegEvent(self.type, self)
	end
	self.type = type
	RedDotMgr:regEvent(type, self, self.UpdateNum)
end

---@private 回调
function RedHint:UpdateNum(Num)
	if Num > 0 then
		self.numBg:SetActive(true)
	else
		self.numBg:SetActive(false)
	end
	self.num.text.text = tostring(Num)
end

---@public 获取数量
function RedHint:GetNum()
	if self.type ~= nil then
		return RedDotMgr:GetNum(self.type)
	end
	LuaLogger.ds(" RedHint  GetNum  self.type = nil", self.type)
	return 0
end

function RedHint:OnDestroy()
	self:unRegEvent()
end

---反注册
function RedHint:unRegEvent()
	if self.type ~= nil then
		RedDotMgr:unRegEvent(self.type, self)
	end

	self.type = nil
	self.num.text.text = ""
	self.numBg:SetActive(false)
end

简单示例，若有问题，欢迎童鞋们留言指点哦。