不能向後移動組！科羅娜SDK

Question

我是新來的，我試圖與電暈SDK的Android做一個視頻遊戲，但我只能堅持在後臺創建隨機粒子， 這裏是代碼：

local menu = composer.newScene() 

function menu:create(event) 
    local bg = self.view 
    local particlesGroup = self.view 
    local sceneGroup = self.view 


    blackLayer = display.newImageRect( "black_layer.png", 1280, 300) 
    blackLayer.y = display.contentCenterY + 150 
    blackLayer.x = display.contentCenterX 
    blackLayer.alpha = 0.6 



    background = display.newImageRect("background.png", 1280 , 720) 
    background.x = display.contentCenterX 
    background.y = display.contentCenterY 




    playBtn = widget.newButton({ 
    id="playBtn", 
    x=display.contentCenterX+350, 
    y=blackLayer.y, 
    labelColor = { default={0.922, 0.938, 0.941}, over={0.9, 0.3, 0.234, 0.6}}, 
    label = "Play Now", 
    defaultFile = "redBtn.png", 
    overFile = "whiteBtn.png", 
    width = 200, 
    height = 200, 
    fontSize = 30, 
    font = "Fonts/Raleway-Bold.ttf", 
    --onRelease = composer.gotoScene("game") 
    }) 


    settingsBtn = widget.newButton({ 
     id="playBtn", 
     x=display.contentCenterX, 
     y=blackLayer.y-50, 
     font = "Fonts/Raleway-Bold.ttf", 
     label = "Settings", 
     defaultFile = "rectWhiteBtn.png", 
     overFile = "rectRedBtn.png", 
     width =250, 
     height = 100, 
     fontSize = 30, 
     labelColor = { default={0.9, 0.3, 0.234} , over={0.922, 0.938, 0.941, 0.6} }, 
     onRelease = gotoSettings 
    }) 


    highScoresBtn = widget.newButton({ 
     id="highScoresBtn", 
     x=display.contentCenterX, 
     y=settingsBtn.y + 100, 
     font = "Fonts/Raleway-Bold.ttf", 
     label = "High Scores", 
     defaultFile = "rectWhiteBtn.png", 
     overFile = "rectRedBtn.png", 
     width =250, 
     height = 100, 
     fontSize = 30, 
     labelColor = { default={0.9, 0.3, 0.234} , over={0.922, 0.938, 0.941, 0.6} }, 
     --onRelease = composer.gotoScene("highScores") 
     }) 

     bg:insert(background) 
     sceneGroup:insert(blackLayer) 
     sceneGroup:insert(playBtn) 
     sceneGroup:insert(settingsBtn) 
     sceneGroup:insert(highScoresBtn) 

     function generateParticles() 
     local xy=math.random(30,70) 
     local newParticle = display.newImageRect(particlesGroup, objectSheet , math.random(13), xy, xy) 
     newParticle.x = (math.random(1280)*math.random(88932))%1280 
     newParticle.y = (math.random(720)*math.random(13546))%720 
     newParticle.alpha = 0 
     transition.to(newParticle, {alpha=1, time=150, onComplete=dimParticle, onCompleteParams=newParticle}) 
     end 

     function generateParticlesSmall() 
     local xy=math.random(5,15) 
     local newParticle = display.newImageRect(particlesGroup, objectSheet , 1, xy, xy) 
     newParticle.x = (math.random(1280)*math.random(88932))%1280 
     newParticle.y = (math.random(720)*math.random(13546))%720 
     newParticle.alpha = 0 
     transition.to(newParticle, {alpha=1, time=150, onComplete=dimParticle, onCompleteParams=newParticle}) 
     end 

end 


function menu:show(event) 
    local bg = self.view 
    local particlesGroup = self.view 
    local sceneGroup = self.view 
    local phase = event.phase 



    if (phase == "will") then 


     bigPTimer1=timer.performWithDelay(1, generateParticles, 0) 
     -- Start the timer wich call 'generateParticles' for each ms 


     smallPTimer=timer.performWithDelay(1, generateParticlesSmall, 0) 
     -- Start the timer wich call 'generateParticlesSmall' for each ms 
     particlesGroup:toBack() 

    elseif (phase == "did") then 


     if event.phase=="began"then 
     end 
     if event.phase=="ended"then 
     end 


    end 
end 


function menu:hide(event) 
    local bg = self.view 
    local particlesGroup = self.view 
    local sceneGroup = self.view 
    local phase = event.phase 

    if (phase == "will") then 
     -- Code here runs when the scene is still off screen (but is about to come on screen) 



    elseif (phase == "did") then 
     -- Code here runs when the scene is entirely on screen 

    end 
end 

function menu:destroy(event) 
    local bg = self.view 
    local particlesGroup = self.view 
    local sceneGroup = self.view 
end 

--Funzioni 

local function gotoGame() 
    composer.gotoScene("game") 
end 

local function gotoHighScores() 
    composer.gotoScene("highscores") 
end 

function gotoSettings() 
    reproduceEffet1() 
    timer.cancel(bigPTimer1) 
    timer.cancel(smallPTimer) 
    composer.gotoScene("settings", options) 
end 

--funzioni 

local function removetotally(particle) 
    display.remove(particle) 
end 

function dimParticle(particle) 
    transition.to(particle, {alpha=0, time=500, onComplete = removetotally, onCompleteParams = particle}) 
end 

-- 

menu:addEventListener("create", menu) 
menu:addEventListener("show", menu) 
menu:addEventListener("hide", menu) 
menu:addEventListener("destroy", menu) 


-- 

return menu 

所有功能都能正常工作，但問題是我無法將bg和sceneGroup之間的粒子組移回來。

謝謝聽我說。

Answer 1

在您的代碼中，您只有1個顯示組。

local bg = self.view 
local particlesGroup = self.view 
local sceneGroup = self.view 

您需要創建particlesGroup的孩子，爲了將其移回：

聲明局部變量上的文件的頂部：

local menu = composer.newScene() 
local bg, particlesGroup 

創建組在menu:create

bg = display.newGroup() 
particlesGroup = display.newGroup() 
local sceneGroup = self.view 
sceneGroup:insert(bg) 
sceneGroup:insert(particlesGroup) -- here particlesGroup will be on the top 

particlesGroup:toBack() --now particlesGroup is under bg