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    Moving images

    HarrisonHarrison Member
    edited February 2014 in General questions
    I just need to make my image move when the app is played. like... the x and a y smoothly gain 12 per second (for example purposes) How would i make my image update? I tried to implement a game loop and only succeed in crashing my gideros player. 30 mins of research later... nothing. :-?
    “ The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. ” - Tom Cargill
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    Comments

    • OZAppsOZApps Guru
      @Harrison, not entirely sure on what you are after, have you tried reading my latest tutorial on http://howto.oz-apps.com ? It talks about scrolling and also about adding accelerometer to influence the same.

      link to the article http://howto.oz-apps.com/2014/02/viewing-image-like-in-facebook-paper-app.html
      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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    • HarrisonHarrison Member
      thanks, i will look into it :)

      just to rephrase:
      image:setPosition(x,y)

      over and over again:
      x=x+1
      y=y+1
      end
      “ The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. ” - Tom Cargill
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    • HarrisonHarrison Member
      hmm... i guess i cant figure out event listeners, and that's the true problem..
      “ The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. ” - Tom Cargill
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    • HarrisonHarrison Member
      i think i figured it out - http://docs.giderosmobile.com/
      so... what are these event listener things?
      “ The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. ” - Tom Cargill
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    • talistalis Guru
      edited February 2014
      Harrison you can use onEnterframe event to move your sprites. After having basic knowledge of events in Gideros i suggest you to look at those tutorials:
      http://blog.magnusviri.com/category/Gideros.html

      Of cource in addition to those ones please don't forget to visit this link:
      http://giderosmobile.com/guide

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    • ar2rsawseenar2rsawseen Maintainer
      What you are looking for is probably something like this:
      --create a scene
Scene = Core.class(Sprite)
 
--scene constructor
function Scene:init()
    --create an image
    self.myImage = Bitmap.new(Texture.new("myimage.png", true))
    self:addChild(self.myImage)
 
    --add enter frame event listener
    self:addEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)
end
 
--inside enterframe event listener
function Scene:onEnterFrame()
    -- move your image by changing position
    self.myImage:setPosition(self.myImage:getX() + 1, self.myImage:getY()+1)
end
 
function Scene:destroy()
    --remove enter frame listener
    self:removeEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)
end
 
local scene = Scene.new()
stage:addChild(scene)
 
--and when you don't need it anymore
scene:destroy()
stage:removeChild(scene)
      http://appcodingeasy.com/Gideros-Mobile
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