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    Sprite always on foreground (top)

    DikkesnoekDikkesnoek Member
    edited November 2012 in General questions
    Hi,

    Is there a way to put a bitmap/sprite alway's on top of the hierarchy
    (z-axis)? I need this to let a moving object disseapear behind an other
    object. The moving object will be removed from the stage sometimes.
    At the moment all the graphical child stuff will be added to the stage
    and I tried the getParent and addChildAt methods but I could't get it
    to work.

    Regards,

    Marc

    Dislikes: fxone

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    Comments

    • ScouserScouser Guru
      Whenever you add a child to a group it will always be placed at the front (on top).
      level:addChild(player)
addOtherObjectsToParent(level)
addMoreOtherObjectsToParent(level)
level:addChild(player)
      Should always put player on top of other objects.
      Twitter: https://twitter.com/#!/scouser
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    • moopfmoopf Guru
      edited November 2012 Accepted Answer
      The best way to do this (rather than constantly re-adding the child) is to build a couple of layers in your app. On the bottom layer you have all the stuff you want to happen behind, on the top layer you have the bits you want to stay on top.

      Layers are just made by sub-classing Sprite, e.g.:
      <pre>
MyLayer = MyLayer or Core.class(Sprite)
 
function MyLayer:init()
   --add your bitmaps in here to 'self'
end
 
mylayer = MyLayer.new()
stage:addChild(mylayer)
      So create two of those classes, one for the front and one for the back

      Likes: Mells, ar2rsawseen

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    • OZAppsOZApps Guru
      Have you tried adding the object using
      stage:addChild(theSprite)
      will place
      theSprite
      on top of all other objects in that group.
      twitter: @ozapps | http://www.oz-apps.com | http://howto.oz-apps.com | http://reviewme.oz-apps.com
      Author of Learn Lua for iOS Game Development from Apress ( http://www.apress.com/9781430246626 )
      Cool Vizify Profile at https://www.vizify.com/oz-apps
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    • ar2rsawseenar2rsawseen Maintainer
      And @moopf wins this round ;)
      http://appcodingeasy.com/Gideros-Mobile
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    • DikkesnoekDikkesnoek Member
      edited November 2012
      Thanks. I use the stage:addChild(theSprite). But later on, a moving sprite
      will be added again so it will be placed on top while it needs to disappear
      behind "theSprite". I will try to create dedecated layers.

      Regards,

      Marc
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    • NinjadoodleNinjadoodle Member
      Hi guys

      I just saw this post and I'm wondering how you would use 2 layers with scenes?

      Thanks in advance!
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    • hgvyas123hgvyas123 Guru
      @Ninjadoodle
      function scene1:init()
	local layer1 = Sprite.new()
	local layer2 = Sprite.new()
	self:addChild(layer1)
	self:addChild(layer2)
----now add your objects in layer1 or layer2 whatever you add in layer2 will always above the layer1
end
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    • NinjadoodleNinjadoodle Member
      edited January 2014
      Wicked!

      Thank you for that! I'm still getting my head around Groups and it took me a while to realise that you can have Groups within Groups and that Layers are also Groups :)

      Thanks again!

      Dislikes: definisto

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