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Creating a Group and how to unload? — Gideros Forum
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    Creating a Group and how to unload?

    MillerszoneMillerszone Member
    edited September 2011 in General questions
    I'm not very experienced with Lua, so I have a question about Creating a Group and
    how to unload with Gideros. I know how to create a Group and upload with Corona.

    Corona example:
    -- Main menu screen
 
-- Create menu group
local menuGroup = display.newGroup() 
 
-- Display menu screen
local menuBG = display.newImageRect("menu.png", 480, 320)
menuGroup:insert(menuBG)
 
-- New game button
newGameBTN = display.newImageRect("newgameBtn.png", 270, 36)
menuGroup:insert(newGameBTN)
 
-- Settings button
settingsBTN = display.newImageRect("settingsBtn.png", 270, 36)
menuGroup:insert(settingsBTN)
 
-- Statistics button
statisticsBTN = display.newImageRect("statsBtn.png", 270, 36)
menuGroup:insert(statisticsBTN)
 
-- When I'm ready to unload the main menu I use this:
display.remove(menuGroup); menuGroup = nil
    Also is there a way to monitor Memory with Gideros like the cose below?
    -- local monitorMem = function()
 
    -- collectgarbage()
    -- print( "\nMemUsage: " .. collectgarbage("count") )
 
    -- local textMem = system.getInfo( "textureMemoryUsed" ) / 1000000
    -- print( "TexMem:   " .. textMem )
-- end
 
-- Runtime:addEventListener( "enterFrame", monitorMem )
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    Comments

    • atilimatilim Maintainer
      Hi,

      You can use Sprites to group your display objects like:
      -- Main menu screen
 
-- Create menu group
local menuGroup = Sprite.new()
stage:addChild(menuGroup)       -- and add this sprite to stage
 
-- Display menu screen
local menuBG = Bitmap.new(Texture.new("menu.png"))
menuGroup:addChild(menuBG)
 
-- New game button
newGameBTN = Bitmap.new(Texture.new("newgameBtn.png"))
menuGroup:addChild(newGameBTN)
 
-- Settings button
settingsBTN = Bitmap.new(Texture.new("settingsBtn.png"))
menuGroup:addChild(settingsBTN)
 
-- Statistics button
statisticsBTN = Bitmap.new(Texture.new("statsBtn.png"))
menuGroup:addChild(statisticsBTN)
 
-- When I'm ready to unload the main menu I use this:
stage:removeChild(menuGroup); menuGroup = nil

      Currently, it's not possible to get the used texture memory but you can get the memory that Lua allocates:
      local monitorMem = function()
    collectgarbage()
    print( "\nMemUsage: " .. collectgarbage("count") )
end
 
stage:addEventListener(Event.ENTER_FRAME, monitorMem)
      http://en.wikipedia.org/wiki/Cytorus
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    • MillerszoneMillerszone Member
      I have to get use to the "Sprite" class. I think Sprite is like Display in Corona.

      Thank atilim!
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