Lua 碰撞检测不需要'；t工作在场景内部：显示

我正在尝试检测

场景：show

函数中两个对象的碰撞

这是我的第一组对象，上面有一个碰撞侦听器

for i = 1, table.maxn(layout.playgrid) do
  physics.addBody( leftholes[i], "static" )
  sceneGroup:insert(3,leftholes[i])
  leftholes[i].name = "hole"
  leftholes[i]:addEventListener( "collision", lis )
  physics.addBody( rightholes[i], "static")
  sceneGroup:insert(3,rightholes[i])
  rightholes[i].name = "hole"
  rightholes[i]:addEventListener( "collision", lis )
  physics.addBody( topholes[i], "static" )
  sceneGroup:insert(3,topholes[i])
  topholes[i].name = "hole"
  topholes[i]:addEventListener( "collision", lis )
  physics.addBody(bottomholes[i], "static")
  sceneGroup:insert(3,bottomholes[i])
  bottomholes[i]:addEventListener( "collision", lis )
  bottomholes[i].name = "hole"
end

这就是将与孔对象碰撞的对象

hand = display.newImage("assets/hand.png",350,490)
hand.name = "hand"
physics.addBody( hand, "static")

那是我的碰撞监听器

local function lis(event)
if event.phase == "began" and event.object2.name=="hand" then  
print( "detected" ) 
local function tra( )
  trans = display.newImage('assets/gray.png',indicesToOuterCordinate(layout.finalx,layout.finaly,layout.finalside,false))
  physics.addBody( trans, "static")
  sceneGroup:insert(trans)
  hand:toFront()
end
end
end

---

只需检查是否正在使用RuntimeEvent侦听器添加冲突侦听器

如果不添加与运行时事件侦听器的冲突，则不会检测到冲突

local function onCollision( event )

if ( event.phase == "began" ) then

    print( "began: " .. event.object1.myName .. " and " .. event.object2.myName )

elseif ( event.phase == "ended" ) then

    print( "ended: " .. event.object1.myName .. " and " .. event.object2.myName )

end
end

---

运行时：addEventListener（“冲突”，onCollision）

运行此代码时，您是否遇到任何错误？只是我使用trans对象时出现的错误，当然，这会发生，因为如果我在侦听器之外删除此块，tans对象仍然没有实例化bot。不，我没有遇到任何错误。我很难理解问题是什么？检测似乎没有触发？或者代码根本不运行？检测不会触发