SysInfoExpView = SysInfoExpView or BaseClass()
local SysInfoExpView = SysInfoExpView
local math_min = math.min
local math_abs = math.abs


function SysInfoExpView:__init()
	self.msg_cache_list = Array.New() 	--消息列表缓存池
	self.msg_list = {}					--当前消息列表
	self.msg_id = 0
	self.wnd_cache_list = Array.New()	--消息对象缓存池
	self.message_wnd_list = {}			--当前消息对象

	self.last_update_time = 0			--更新频率限制
	self.move_dist = 100				--移动距离
	self.speed = 180					--移动速度

	self.max_msg_count = 5				--最大数量

	self.prefab_asset = nil
	self:LoadAsset()

	Runner:getInstance():AddRunObj(self)
end

function SysInfoExpView:LoadAsset()
	local function call_back(objs)
		self.prefab_asset = objs[0]
		self:CreateMessageContainer()
	end
	lua_resM:loadPrefab(self,"message","ExpMessageItem", call_back)
end

function SysInfoExpView:__delete()
	local size = self.wnd_cache_list:GetSize()
	for i=0,size-1 do
		local item = self.wnd_cache_list:PopFront()
		item:DeleteMe()
		item = nil
	end
	self.wnd_cache_list = nil

	for k,v in pairs(self.message_wnd_list) do
		v:DeleteMe()
	end
	self.message_wnd_list = {}
end

--预先创建消息对象
function SysInfoExpView:CreateMessageContainer()
	if self.prefab_asset then
		local item = nil
		for index = 1, self.max_msg_count do
			item = ExpMessageItem.New(panelMgr:GetParent("Top"),self.prefab_asset)
			self.wnd_cache_list:PushBack(item)
		end
	end
end

--实时获取消息对象
function SysInfoExpView:CreateMessageItem( id, info )
	local item = self.message_wnd_list[id]
	if item then 
		if not item.has_data then
			item:SetData(info)
		end
	else
		local item = self.wnd_cache_list:PopFront()
		if item then
			self.message_wnd_list[id] = item
			if not item.has_data then
				item:SetData(info)
			end
		end
	end
	return item
end

function SysInfoExpView:Update(now_time, elapse_time)
	if now_time - self.last_update_time < 0.03 then
		return
	end
	self.last_update_time = now_time

	for id, info in pairs(self.msg_list) do
		if info and info.start_time < now_time then
			local p = 0
			if info.dist >= self.move_dist then
				info.dead = true
			else
				local dist = elapse_time * self.speed
				info.dist = info.dist + dist
				p = info.dist / self.move_dist
				if p > 1 then
					p = 1
				end
				info.pos_y = info.pos_y + dist
			end

			if info.dead then
				local item = self.message_wnd_list[id]
				if item then
					self:CacheItem(item)
					self.message_wnd_list[id] = nil
				end
				self:CacheInfo(info)
				self.msg_list[id] = nil
			else
				-- local item = self:CreateMessageItem(id, info)
				local item = self.message_wnd_list[id]
				if item then 
					if not item.has_data then
						item:SetData(info)
					end
				else
					local item = self.wnd_cache_list:PopFront()
					if item then
						self.message_wnd_list[id] = item
						if not item.has_data then
							item:SetData(info)
						end
					end
				end
				if item then
					-- item.canvasGroup.alpha = 1 - (p * p * 1)
					if SceneManager.Instance:IsBeachScene() or SceneManager.Instance:IsGuildScene() then
						SetLocalPosition(item.transform, 0, info.pos_y+ScreenHeight * 0.39, ExpMessageItem.PosZ)
					else
						SetLocalPosition(item.transform, ExpMessageItem.PosX, info.pos_y, ExpMessageItem.PosZ)
					end
				end
			end
		end
	end
	
end

--is_normal标识不需要经验字体，用普通字体样式
function SysInfoExpView:AppendMessage(content, percent, is_normal, is_score)
	if not self.prefab_asset then
		return
	end

	--最多缓存消息
	if TableSize(self.msg_list) > 6 then
		return
	end

	local info = self.msg_cache_list:PopFront()
	if info then
		info.content = content
		info.percent = percent
		info.start_time = Time.time
		info.pos_y = ExpMessageItem.PosY
		info.dead = false
		info.dist = 0
	else
		info = {
			content = content or 0,
			percent = percent or 0,
			start_time = Time.time,
			pos_y = 0,
			dead = false,
			dist = 0,
		}
	end
	info.is_normal = is_normal or false
	info.is_score = is_score or false
	self.msg_id = self.msg_id + 1
	local diff_time = 0
	local last_info = self.msg_list[self.msg_id-1]
	if last_info then
		diff_time = math_abs(0.35 - (info.start_time - last_info.start_time)) 
	end
	info.start_time = info.start_time + diff_time
	info.pos_y = ExpMessageItem.PosY
	self.msg_list[self.msg_id] = info
end


function SysInfoExpView:CacheItem( item )
	item:Reset()
	local size = self.wnd_cache_list:GetSize()
	if size < self.max_msg_count then
		self.wnd_cache_list:PushBack(item)
	end
end

function SysInfoExpView:CacheInfo( info )
	local size = self.msg_cache_list:GetSize()
	if size < self.max_msg_count then
		self.msg_cache_list:PushBack(info)
	end
end