Quick Links: Download Gideros Studio | Gideros Documentation | Gideros community chat | DONATE
Draw priority — Gideros Forum
  • Home
    • ›

    Draw priority

    totebototebo Member
    edited July 2016 in General questions
    With this code, the shape is never visible. Why is that? Does addChild happen with a delay, or on the next frame? Maybe Gideros waits until the whole chunk of code is ready before it draws?

    I'm looking to show a loading screen before some heavy duty work, and bumped into this issue. Is there a safe way to detect when the shape is showing, so I can start the heavy lifting afterwards?
    local shape = Shape.new()
shape:setFillStyle(Shape.SOLID, 0xff0000, 1)
shape:beginPath()
shape:moveTo(0,0)
shape:lineTo(100, 0)
shape:lineTo(100, 100)
shape:lineTo(0, 100)
shape:lineTo(0, 0)
shape:endPath()
shape:setPosition(0, 150)
stage:addChild(shape)	
 
for i=1, 100000000 do
end
 
shape:removeFromParent()
    My Gideros games: www.totebo.com
    +1 -1Share on Facebook

    Comments

    • totebototebo Member
      edited July 2016
      Perhaps even more curiously, why doesn't the shape become visible with this code?
      local shape = Shape.new()
shape:setFillStyle(Shape.SOLID, 0xff0000, 1)
shape:beginPath()
shape:moveTo(0,0)
shape:lineTo(100, 0)
shape:lineTo(100, 100)
shape:lineTo(0, 100)
shape:lineTo(0, 0)
shape:endPath()
shape:setPosition(0, 150)
 
local onAddedToStage =
	function()
		for i=1, 100000000 do
		end
		shape:removeFromParent()
	end
 
shape:addEventListener( Event.ADDED_TO_STAGE, onAddedToStage )
 
stage:addChild(shape)
      My Gideros games: www.totebo.com
      +1 -1Share on Facebook
    • totebototebo Member
      edited July 2016
      This works! Why?! Is it "safe"?
      local shape = Shape.new()
shape:setFillStyle(Shape.SOLID, 0xff0000, 1)
shape:beginPath()
shape:moveTo(0,0)
shape:lineTo(100, 0)
shape:lineTo(100, 100)
shape:lineTo(0, 100)
shape:lineTo(0, 0)
shape:endPath()
shape:setPosition(0, 150)
 
local heavy =
	function()
		for i=1, 100000000 do
		end
		shape:removeFromParent()
	end
 
Timer.delayedCall( 1, heavy )
 
stage:addChild(shape)
      My Gideros games: www.totebo.com
      +1 -1Share on Facebook
    • ar2rsawseenar2rsawseen Maintainer
      Accepted Answer
      so to simplyfy things, gideros works like this
      run code
      render

      which together is frame

      so it does

      runcode
      render
      runcode
      render
      runcode
      render
      runcode
      render

      all the time under the hood

      Delay runs code on next enter frame or basically next time code is run, all other examples are on the same runcode time

      Likes: totebo, antix

      http://appcodingeasy.com/Gideros-Mobile
      +1 -1 (+2 / -0 )Share on Facebook
    • totebototebo Member
      Thanks, got it.
      My Gideros games: www.totebo.com
      +1 -1Share on Facebook
    Sign In or Register to comment.