Why i can't get the true value of netvar

[ccpalyer]

 

Hi, guys, I want to add a text widgets to show the exp of a character made by another author.

Here is the define of the character's exp and expmax

local common_postinit = function(inst)
 	......
    inst:AddTag("sora")
    inst.soraexp = net_int(inst.GUID, "sora_exp", "soraexpdirty")
    inst.soraexpmax = net_int(inst.GUID, "sora_expmax", "soraexpdirty")
  	.......
end

 

Here is my code

scripts/widgets/sora_exp_title.lua

local Widget = require "widgets/widget"
local Text = require "widgets/text"

local SoraExpTitle = Class(Widget, function(self, owner)
    Widget._ctor(self, "SoraExpTitle")
    self.soraexptitle = self:AddChild(Text(BODYTEXTFONT, 30))

    owner:ListenForEvent("soraexpdirty", function(owner, data) 
        self.exp = owner.soraexp:value()
        self.maxexp = owner.soraexpmax:value()
    end)

    self:StartUpdating()
end)

function SoraExpTitle:OnUpdate(dt)
    local str = self.exp.." / "..self.maxexp
    self.soraexptitle:SetString(str) 
end

return SoraExpTitle

modmain.lua

local soraexptitle = GLOBAL.require("widgets/sora_exp_title")

AddClassPostConstruct("widgets/controls", function(self)
    if not self.owner:HasTag("sora") then
        return
    end

    self.title = self:AddChild(soraexptitle(self.owner))
    self.title:SetHAnchor(0)
    self.title:SetVAnchor(1)
    self.title:SetPosition(70,-50,0)
end) 

 

The question is when i first enter the game, everything is ok, but when game reload(whether quit or not quit the game), the widgets show wrong value of the exp.

It seems that there is a problem with the data synchronization of the network variables. 

Here are some of my findings

1. I make a healer prefab, when i use it, it always works well

local function showExp(inst, target)
    if target ~= nil then
        if target:HasTag("sora") then
            TheNet:Say(target.soraexp:value() .. ' / ' .. target.soraexpmax:value())
        end
    end
end
---------------------------------------
	······
    inst:AddComponent("healer")
    inst.components.healer.health = 0
    inst.components.healer.Heal = showExp
	·······
return Prefab("sora_exp_show", fn, assets, prefabs)

(It seems that true value is normal on the server, but the client is only valid when you first enter the game)

2. Another place store  experience

TheWorld.components.soraexpsave.exps[userid]

It's not a netvar type, i don't know how to listen to the change of this table and get its value in widgets.

 

Some code about the character's exp

-- store/restore the exp when game save/reload 

local soraexpsave = Class(function(self, inst)
    self.inst = inst
    self.exps={}
end)


function soraexpsave:SetExp(userid,setexp)      
    self.exps[userid] = setexp
end
function soraexpsave:GetExp(userid)      
    return userid and self.exps[userid] and math.max(0,self.exps[userid]-1000) or -1
end


function soraexpsave:OnSave() 
	return  {exps=self.exps} or { a =1}
end

function soraexpsave:OnLoad(data)       
	if data then
        self.exps = data.exps or {}
	end
end

return soraexpsave

local function OnSoraSpawn(inst)
    local first = true
    if TheWorld.components.soraexpsave then
        local saveexp = TheWorld.components.soraexpsave:GetExp(inst.userid)
        first = saveexp == -1
        if saveexp > 0 then inst:GetExp(saveexp) end
    end
end

set exp

local function GetExp(inst, num, code, dmaxexp, once)
    inst.soraexp:set(math.max(0, inst.soraexp:value() + num))
    if inst.soralevel:value() < 30 and inst.soraexp:value() >=
        expfornextlev(inst.soralevel:value()) or num <= 0 then
        applyupgrades(inst, true)
    end
    inst.soraexpget = inst.soraexpget + num
    if inst.soraexpget > 1000 then
        inst.soraexpget = 0
        applyupgrades(inst, true)
    end
    TheWorld.components.soraexpsave:SetExp(inst.userid, inst.soraexp:value())
end

 

Is there any way to solving the above problem? Please help, thanks~

 

 

[Monti18]

If I remember correctly, this happens because you have the ListenForEvent in the construction of the widget with owner as the instance. I think somehow this instance of the owner can change so that it isn't able to listen to events.

I think you can fix this by adding the ListenForEvent in the AddClassPostConstruct:

Spoiler

local soraexptitle = GLOBAL.require("widgets/sora_exp_title")

AddClassPostConstruct("widgets/controls", function(self)
    if not self.owner:HasTag("sora") then
        return
    end

    self.title = self:AddChild(soraexptitle(self.owner))
    self.title:SetHAnchor(0)
    self.title:SetVAnchor(1)
    self.title:SetPosition(70,-50,0)
    
     self.owner:ListenForEvent("soraexpdirty", function(owner, data) 
        self.exp = owner.soraexp:value()
        self.maxexp = owner.soraexpmax:value()
    end)
end) 

 

 

[ccpalyer]

1 hour ago, Monti18 said:

If I remember correctly, this happens because you have the ListenForEvent in the construction of the widget with owner as the instance. I think somehow this instance of the owner can change so that it isn't able to listen to events.

I think you can fix this by adding the ListenForEvent in the AddClassPostConstruct:

  Hide contents

local soraexptitle = GLOBAL.require("widgets/sora_exp_title")

AddClassPostConstruct("widgets/controls", function(self)
    if not self.owner:HasTag("sora") then
        return
    end

    self.title = self:AddChild(soraexptitle(self.owner))
    self.title:SetHAnchor(0)
    self.title:SetVAnchor(1)
    self.title:SetPosition(70,-50,0)
    
     self.owner:ListenForEvent("soraexpdirty", function(owner, data) 
        self.exp = owner.soraexp:value()
        self.maxexp = owner.soraexpmax:value()
    end)
end) 

 

 

thanks for your answer , I tried,  It shows up correctly when I enter the game and do nothing, but when my exp changes(like do work pick, character will increase 2 exp), the exp shows up incorrectly again. It's really weird.

my code

local soraexptitle = GLOBAL.require("widgets/sora_exp_title")
AddClassPostConstruct("widgets/controls", function(self)
    if not self.owner:HasTag("sora") then
      return
    end

    self.title = self:AddChild(soraexptitle(self.owner))
    self.title:SetHAnchor(0)
    self.title:SetVAnchor(1)
    self.title:SetPosition(70,-50,0)

    self.owner:ListenForEvent("soraexpdirty", function(owner,data) owner.exp = owner.soraexp:value() owner.maxexp = owner.soraexpmax:value() end) 
  end) 

 

local Widget = require "widgets/widget"
local Text = require "widgets/text"

local SoraExpTitle = Class(Widget, function(self, owner)
    Widget._ctor(self, "SoraExpTitle")
    self.soraexptitle = self:AddChild(Text(BODYTEXTFONT, 30))
    self.owner = owner
    self:StartUpdating()
end)

function SoraExpTitle:OnUpdate(dt)
    self.owner.exp = self.owner.exp and self.owner.exp or '-'
    self.owner.maxexp = self.owner.maxexp and self.owner.maxexp or '-'
    local str = self.owner.exp.." / "..self.owner.maxexp
    self.soraexptitle:SetString(str)
    return 
end


return SoraExpTitle

Is it possible for the author to add some monitoring? I checked all the code related to exp, but I found no sign of doing so.

Edited January 14, 2022 by ccpalyer

[Monti18]

Try replacing your widget with this:

Spoiler

local Widget = require "widgets/widget"
local Text = require "widgets/text"

local SoraExpTitle = Class(Widget, function(self, owner)
    Widget._ctor(self, "SoraExpTitle")
    self.soraexptitle = self:AddChild(Text(BODYTEXTFONT, 30))

    self.inst:ListenForEvent("soraexpdirty", function(owner, data) 
        self.exp = owner.soraexp:value()
        self.maxexp = owner.soraexpmax:value()
    end,owner)

    self:StartUpdating()
end)

function SoraExpTitle:OnUpdate(dt)
    local str = self.exp.." / "..self.maxexp
    self.soraexptitle:SetString(str) 
end

 

The ListenForEvent is written with the owner added at the end, which makes a difference as to how it is called.

[ccpalyer]

On 1/14/2022 at 9:09 PM, Monti18 said:

Try replacing your widget with this:

  Reveal hidden contents

local Widget = require "widgets/widget"
local Text = require "widgets/text"

local SoraExpTitle = Class(Widget, function(self, owner)
    Widget._ctor(self, "SoraExpTitle")
    self.soraexptitle = self:AddChild(Text(BODYTEXTFONT, 30))

    self.inst:ListenForEvent("soraexpdirty", function(owner, data) 
        self.exp = owner.soraexp:value()
        self.maxexp = owner.soraexpmax:value()
    end,owner)

    self:StartUpdating()
end)

function SoraExpTitle:OnUpdate(dt)
    local str = self.exp.." / "..self.maxexp
    self.soraexptitle:SetString(str) 
end

 

The ListenForEvent is written with the owner added at the end, which makes a difference as to how it is called.

It doesn't work either. T_T, when the game doesn't include the cave, everything works fine.

[Wonderlarr]

15 hours ago, ccpalyer said:

It doesn't work either. T_T, when the game doesn't include the cave, everything works fine.

That's because the game doesn't run as a client connected to a server when you host a game without caves, you ARE the server, meaning any server data is directly shown to you,since you, well, are the server.