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    function expected, got nil

    Tstar_oneTstar_one Member
    edited May 2013 in Bugs and issues
    i have a timer in a class i every time i try this there is the Error : function expected, got nil
    i dont know why :(

    dave= Core.class(Sprite)
    local fall_timer = Timer.new(10,0)


    function dave:init()

    fall_timer:addEventListener(Event.TIMER, self.onJumpFallTimer )

    end

    function dave:onJumpFallTimer()

    -- Do something...

    end
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    Comments

    • ar2rsawseenar2rsawseen Maintainer
      Hello @Tstar_one it seems the error is somewhere else, if I copy this to empty project, it works:
      dave= Core.class(Sprite)
local fall_timer = Timer.new(10,0)
 
 
function dave:init()
 
 fall_timer:addEventListener(Event.TIMER, self.onJumpFallTimer )
 fall_timer:start()
 
end
 
function dave:onJumpFallTimer()
 
 -- Do something...
 
 print("me")
 
end
 
dave.new()
      on which line does the error show and what is on that line?
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    • alexzhengalexzheng Guru
      @Tstar_one
      You must have used self in the dave:onJumpFallTimer function that you have not pass through the fall_timer:addEventListener

      I think just change to fall_timer:addEventListener(Event.TIMER, self.onJumpFallTimer, self ) will works.
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    • Tstar_oneTstar_one Member
      This Line fall_timer:addEventListener(Event.TIMER , self.onJumpFallTimer)

      cause the error even with self at the end :( and the function is emtpy same thing

      lua:53: bad argument #2 to 'addEventListener' (function expected, got nil)
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    • ar2rsawseenar2rsawseen Maintainer
      Accepted Answer
      if you are really doing it inside dave:init then you must have reassigned self variable to something else.
      Unfortunately, without seeing more code, we can't really help you
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    • Tstar_oneTstar_one Member
      I found it !!! the Functions where wirtten in an function i set an end wrong thank you all :)
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