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    Get random picture

    Den_er_da_hvidDen_er_da_hvid Member
    edited May 2016 in General questions
    Hi
    I have spent 30-60min every evening the last couple of days playing with Gideros, reading and watching videos and starting to get the idea of things. I have almost finished coding my app... well finished it in my head. Now I just need to write the code.

    First baby step I want to play with and understand is getting a random picture, and I was hoping for help in connecting the dots.

    The real question is: How do I use the random number to get the image??

    This is my code so far. I have also pasted the "--" code so you maybe can see what I was thinking.
    --local img = Bitmap.new(Texture.new("pen1.png"))
local halfposition = application:getDeviceWidth() / 2
 
local img = {"pen1.png", "pen2.png", "pen3.png" }
local r = math.random(1, #img)
 
--stage:addChild(Bitmap.new(Texture.new(img)))
--img:setAnchorPoint(0.5, 0)
--img:setPosition(halfposition , 0)
--img:setScale(0.25 , 0.25)
 
print (r)

    *note: I will use the r-number for something later.
    **I could add as many as 150 images.
    *** I do know that the "img" in Texture.new(img) dosn't work. I was trying and hoping it might...
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    Comments

    • greengeekgreengeek Member
      Accepted Answer
      Once you have the random number 'r', use it to index 'img' table like img[r].
      math.randomseed(os.time())
      is needed to make it truly random. But it looks like Gideros framework is calling it internally. No need to bother about it.
      local img = {"pen1.png", "pen2.png", "pen3.png" }
 
local r = math.random(1, #img)
stage:addChild(Bitmap.new(Texture.new(img[r])))

      Likes: Den_er_da_hvid

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    • greengeekgreengeek Member
      edited May 2016
      I got an error on posting my earlier comment and but it was posted fine. So, editing this comment because I can't figure out how to delete comment :)

      Likes: Den_er_da_hvid

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    • piepie Member
      Accepted Answer
      see also
      http://giderosmobile.com/forum/discussion/comment/32537#Comment_32537
      to read all textures from a texturepack instead of adding them all by hand :)

      Likes: Den_er_da_hvid

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    • Den_er_da_hvidDen_er_da_hvid Member
      Thanks guys
      I have a trip to norway the few days so I will try it on monday!

      @pie Looks like a solution I need to play with. I ties well into solving the next problem. Adding text underneath the image and keeping al the text so it is easy to work width.
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