Question

我正在使用LUA Glider和Level Director X编写游戏，使用TexturePacker创建关卡以创建spritesheets。我在触摸事件处理程序中遇到了一个非常不寻常的事情。

正如您在代码中看到的，我有一个名为“sign”的对象。我为它分配了一个调用函数“flipSign”的触摸事件处理程序。函数翻转符号检查触摸事件是否已经结束，如果是，则将名为“signDirection”的变量增加1并打印该值。

每次运行应用程序并单击Corona Simulator中的符号时，输出都会打印：

1 2 3 4 5

再次单击该符号会将变量再增加5次为10.我的理解是，每次单击符号时，代码只应将变量增加1。

任何帮助理解为什么会发生这种情况将不胜感激。

谢谢！

local composer = require( "composer" )
local scene = composer.newScene()

require("lib.LD_LoaderX")
physics = require ("physics")
physics.start()



local render = require ("render")

-- -----------------------------------------------------------------------------------
-- Code outside of the scene event functions below will only be executed ONCE unless
-- the scene is removed entirely (not recycled) via "composer.removeScene()"
-- -----------------------------------------------------------------------------------

local myLevel = {}

local signDirection = 0


local function flipSign( event )
    
    
    if (event.phase == "ended") then
        signDirection = signDirection + 1
        print(event.phase)
        
        
    end
    return true
end

-- -----------------------------------------------------------------------------------
-- Scene event functions
-- -----------------------------------------------------------------------------------
 
-- create()
function scene:create( event )
    -- Code here runs when the scene is first created but has not yet appeared on screen
    
    local sceneGroup = self.view
    myLevel= LD_Loader:new(self.view)
    myLevel:loadLevel("level_1")
    
end
 
 
-- show()
function scene:show( event )
 
    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)
    
        local sign = myLevel:getLayerObject("island_4", "Sign_2_4").view
        sign:addEventListener ( "touch", flipSign )
 
    elseif ( phase == "did" ) then
        -- Code here runs when the scene is entirely on screen
      
        
        
 
    end
end
 
 
-- hide()
function scene:hide( event )
 
    local sceneGroup = self.view
    local phase = event.phase
 
    if ( phase == "will" ) then
        -- Code here runs when the scene is on screen (but is about to go off screen)
 
    elseif ( phase == "did" ) then
        -- Code here runs immediately after the scene goes entirely off screen
       
    end
end
 
 
-- destroy()
function scene:destroy( event )
 
    local sceneGroup = self.view
    -- Code here runs prior to the removal of scene's view
    myLevel:removeLevel()
    myLevel = nil

 
end
 
 
-- -----------------------------------------------------------------------------------
-- Scene event function listeners
-- -----------------------------------------------------------------------------------
scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )
-- -----------------------------------------------------------------------------------
 
return scene

Answer 1

在您提供的代码段中，没有任何内容正在打印signDirection的值。相反，您在NA, NA.1, NA.x ...NA.6：

中有此输出

flipSign()

应输出：

print(event.phase)

每次在DisplayObject ended上触摸结束。所以你说你得到的输出

sign

代码段中的任何内容都无法生成

。您的代码中是否有其他触摸侦听器？

触摸事件执行五（5）次而不是一次

1 个答案: