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    Delay in getParent()

    jimlevjimlev Member
    edited August 2014 in Code snippets
    Hello !
    Here is another question, probably a stupid one for confirmed dev but...

    here is an example :
    Player = Core.class(Sprite)
 
function Player:init(name)
	self.myName = name
 
	self.myBag = Inventory.new()
	self:addChild(self.myBag)
end
 
 
Inventory = Core.class(Sprite)
 
function Inventory:init(name)
	self.items = {}
 
	--print(self:getParent().myName)	-- give error 'attempt to index a nil value'
	Timer.delayedCall(1000, function() print(self:getParent().myName) end) -- output 'John'
end
 
 
local firstPlayer = Player.new("John")
stage:addChild(firstPlayer)
    I have an error in the init of the inventory class, if I try to access the parent of my player. If I delay the demand, it works.
    Anything to learn here ? Did I do something the wrong way ?
    thx !
    My meditation plan :
    SinisterSoft: “ I don't create classes that much - classes are good for making things simpler but imho for frame rate they are also death by a thousand cuts.”
    Totebo: “ Best quote ever.”
    🤔
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    Comments

    • ar2rsawseenar2rsawseen Maintainer
      Accepted Answer
      It's simple :)
      self.myBag = Inventory.new() --executes Inventory:init method
--and only after that you add it to Player as child
self:addChild(self.myBag)
      I usually do somekind of generate or prepare methods, for this purpose, as:
      function Inventory:prepare()
    print(self:getParent().myName)
end
 
function Player:init(name)
	self.myName = name
 
	self.myBag = Inventory.new()
	self:addChild(self.myBag)
	self.myBag:prepare()
end

      Likes: jimlev

      http://appcodingeasy.com/Gideros-Mobile
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    • jimlevjimlev Member
      edited August 2014
      It's simple :)
      self.myBag = Inventory.new() --executes Inventory:init method
--and only after that you add it to Player as child
self:addChild(self.myBag)
      of course ! it's so evident ! I'm really surprised not to have encountered this problem before...
      for the 4547 times, thx a lot ar2rsawseen ! (I'm not really sure if there is more of my code or of yours in my game...)

      Likes: ar2rsawseen

      My meditation plan :
      SinisterSoft: “ I don't create classes that much - classes are good for making things simpler but imho for frame rate they are also death by a thousand cuts.”
      Totebo: “ Best quote ever.”
      🤔
      +1 -1 (+1 / -0 )Share on Facebook
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