Moving images

Harrison

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. :-?

OZApps

@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

Harrison

thanks, i will look into it

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

over and over again:
x=x+1
y=y+1
end

Harrison

hmm... i guess i cant figure out event listeners, and that's the true problem..

Harrison

i think i figured it out - http://docs.giderosmobile.com/
so... what are these event listener things?

talis

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

ar2rsawseen

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)