如何从一个lua场景移动到另一个没有用户输入像幻灯片放映

Question

如何在没有用户输入或按钮的情况下将一个lua文件替换为另一个lua文件(如幻灯片)?声音结束了?计时器吗?

例如，scene1:

中的代码

-- visuals
   positionOne = display.newImage( note1, 170, pitch1 ) 
-- first of the two notes in the bar: 170 = x coordinate, pitch = y         
   coordinate
   positionTwo = display.newImage( note2, 320, pitch2 ) 
-- second of the two notes in the bar
-- accomp 1
    local accomp = audio.loadStream("sounds/chord1.mp3")
        audio.play(accomp, {channel = 1})
    audio.stopWithDelay(60000/72)
    -- 72 = beats per minute
-- accomp 2
    local function listener(event)  
    local accomp = audio.loadStream("sounds/chord2.mp3")
        audio.play(accomp, {channel = 2})
    audio.stopWithDelay(60000/72])
    end
    timer.performWithDelay(60000/72, listener)
    end

当音乐结束后，

被这个接替:

-- visuals
   positionOne = display.newImage( note1, 170, pitch3 ) 
-- first of the two notes in the bar: 170 = x coordinate, pitch = y         
   coordinate
   positionTwo = display.newImage( note2, 320, pitch4 ) 
-- second of the two notes in the bar
-- accomp 1
    local accomp = audio.loadStream("sounds/chord3.mp3")
        audio.play(accomp, {channel = 1})
    audio.stopWithDelay(60000/72)
    -- 72 = beats per minute
-- accomp 2
    local function listener(event)  
    local accomp = audio.loadStream("sounds/chord4.mp3")
        audio.play(accomp, {channel = 2})
    audio.stopWithDelay(60000/72])
    end
    timer.performWithDelay(60000/72, listener)
    end

作为一名初学者，我无法理解Corona现成的多场景编码，因为它依赖于用户输入按钮。我注意到，在启动这样一个项目时，主要内容直接移动到场景1，没有ui。其他场景也是这样吗?我说错了什么?

Answer 1

您可以使用timer.performWithDelay()调度场景切换，因为您可以计算何时第二个音频播放将停止。比如:

local function switchScene()
   composer.gotoScene( "scene2", { effect = "slideLeft", time = 500} )
end
-- start the audio stuff here as before...
-- Register scene switch to happen once the audio is done
local timeBeforeSwitch = 2*(60000/72)
timer.performWithDelay(timeBeforeSwitch, switchScene)

作为另一种选择，它应该像这样注册一个onComplete回调到最后一个音频播放调用:

audio.play(accomp, {channel = 2, onComplete=switchScene})

但我还没有测试，看到它的工作与audio.stopWithDelay()