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Make a sprite disappear in a specific region using drag a drop — Gideros Forum
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    Make a sprite disappear in a specific region using drag a drop

    a00zaa00za Member
    edited March 2013 in General questions
    i re-modified the drop function when the Mouse is Up so it will check the position of the dropped sprite if it is in the area of the region the sprite will be disappear if not the nothing happen.
    here is the code:

    function CLL:DragonMouseUpN(event)
    if self.isFocus then
    if( (self:getY()>(800))
    and (self:getY()<(1000))
    and (self:getX()<(900))
    and (self:getX()<(1000))) then
    self.nood:setVisible(false)
    self.isFocus = false --unmark
    event:stopPropagation()
    else
    self.isFocus = false --unmark
    event:stopPropagation()
    end
    end
    end
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    Comments

    • thanhquan1512thanhquan1512 Guru
      O.o

      The x and y coordinate seem too large, what is your device settings?
      Try it out:
      Ultimate Games on Appstore
      Ultimate Games on Google Play
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    • a00zaa00za Member
      iPad 3
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    • mertocanmertocan Member
      (self:getX()<(900)) and (self:getX()<(1000)) I think there is a problem here. Are you mean (self:getX()>(900)) and (self:getX()<(1000)) ??
      My Games. Mert Can KURUM
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    • a00zaa00za Member
      @mertocan thnx for the info i must have get confused.
      But I sill get the same error"attempt to index field 'nood' (a nil value)"
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    • zvardinzvardin Member
      We need to see the code where you're setting the nood property. If nood sometimes doesn't exist you can add "if self.nood" check before self.nood:setVisible though.
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    • mertocanmertocan Member
      So problem is your nood variable.I am not sure but you need to change it with self.nood or you didnt defined it in init function. define it in the init function like self.nood = ....

      Sorry for bad english :)
      My Games. Mert Can KURUM
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    • a00zaa00za Member
      i have defined it in the int()
      self.noodles=Bitmap.new(Texture.new("pics/nood.png"))
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    • mertocanmertocan Member
      So change self.nood:setVisible(false) to self.noodles:setVisible(false)
      My Games. Mert Can KURUM
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    • a00zaa00za Member
      Sorry for the error in writing
      self.nood=Bitmap.new(Texture.new("pics/nood.png"))
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    • mertocanmertocan Member
      Can you send the project? I think you are using nood variable instead of self.nood
      My Games. Mert Can KURUM
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    • a00zaa00za Member
      here is the file
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    • a00zaa00za Member
      function Balaleetp3:init()
      application:setOrientation(Application.LANDSCAPE_LEFT)
      ------ADD images-------------------------------------------------
      --bg
      local bg = Bitmap.new(Texture.new("pics/bg.png"))
      self:addChild(bg)
      localScore = 0
      counter=1
      --pot
      pot=Bitmap.new(Texture.new("pics/pot.png"))
      pot:setAnchorPoint(0.5,0.5)
      pot:setPosition(980,900)
      print(pot:getHeight())
      self:addChild(pot)
      --fire
      fire = FireB.new()
      fire:setPosition(600,1100)
      self:addChild(fire)
      --steam
      steam=SteamB.new()
      steam:setPosition(660,350)
      self:addChild(steam)
      --[[splash
      splash=Bitmap.new(Texture.new("pics/splash.png"))
      splash:setAnchorPoint(0.5,0.5)
      splash:setPosition(0.64,0.28)
      self:addChild(splash)]]--
      self.oil=Bitmap.new(Texture.new("pics/oil_bottle.png"))
      self.oil:setAnchorPoint(0.5,0.5)
      self.oil:setPosition(1600,400)
      self:addChild(self.oil)
      --noodles
      self.noodles=Bitmap.new(Texture.new("pics/noodles.png"))
      self.noodles:setAnchorPoint(0.5,0.5)
      self.noodles:setRotation(120)
      self.noodles:setPosition(200,400)
      self:addChild(self.noodles)
      --------------------------Images end----------------------
      --------------------------Fade Ingredent------------------
      self:FadeIng()
      -------------------------Enf Fade Ingredient--------------
      --------------------------Event Listener------------------

      --noodles
      self.noodles:addEventListener(Event.MOUSE_DOWN, self.DragonMouseDown, self.noodles)
      self.noodles:addEventListener(Event.MOUSE_MOVE, self.DragonMouseMove, self.noodles)
      self.noodles:addEventListener(Event.MOUSE_UP, self.DragonMouseUpN, self.noodles)
      --[[oil
      self.oil:addEventListener(Event.MOUSE_DOWN, self.DragonMouseDown, self.oil)
      self.oil:addEventListener(Event.MOUSE_MOVE, self.DragonMouseMove, self.oil)
      self.oil:addEventListener(Event.MOUSE_UP, self.DragonMouseUp, self.oil)
      --]]
      --Fire
      --self:addEventListener(Event.TIMER, self.onTimer,self)


      -------------------------End Event Listener---------------

      end


      -------------------------Function----------------------------

      ------Drag functions
      function Balaleetp3:DragonMouseDown(event)
      if self:hitTestPoint(event.x, event.y) then
      self.isFocus = true -- mark to chk whether it is selected or not
      self.x0 = event.x--store initial position of touch
      self.y0 = event.y
      event:stopPropagation() --stop all the touch events or mouse event
      end
      end

      function Balaleetp3:DragonMouseMove(event)
      if self.isFocus then
      local dx = event.x - self.x0--get the diff of initial pos and current touch pos
      local dy = event.y - self.y0

      self:setX(self:getX() + dx) -- add this diff to img's x and y pos
      self:setY(self:getY() + dy)

      self.x0 = event.x -- change the initial pos with new one
      self.y0 = event.y

      event:stopPropagation()
      end
      end

      function Balaleetp3:DragonMouseUpN(event)
      if self.isFocus then
      if( (self:getY()>(610))
      and (self:getY()<(1190))
      and (self:getX()>(306))
      and (self:getX()<(1654))) then
      self.noodles:setVisible(false)
      self.isFocus = false --unmark
      event:stopPropagation()
      else
      self.isFocus = false --unmark
      event:stopPropagation()
      end
      end
      end
      -------------Fade Function
      function Balaleetp3:onTimer(timer)
      fade = Fade.new(self)
      stage:addChild(fade)
      end
      function Balaleetp3:FadeIng()
      --counter = counter + 1
      local IngNo= math.random(1,2)
      --noodles

      if (IngNo == 1) then
      local Nodmovie = MovieClip.new{
      {1,30, self.noodles, {alpha=0}},
      {31, 60, self.noodles, {alpha = {0, 1, "easeOut"}}
      }
      }
      Nodindex = self:getChildIndex(self.noodles)
      self:addChildAt(Nodmovie,Nodindex)
      Nodmovie:play()
      IngID=1
      elseif (IngNo == 2) then
      --oil

      Oilmovie = MovieClip.new{
      {1,30, self.oil, {alpha=0}},
      {31, 60, self.oil, {alpha = {0, 1, "easeOut"}}}
      }
      Oilindex = self:getChildIndex(self.oil)
      self:addChildAt(Oilmovie,Oilindex)
      Oilmovie:play()
      IngID=2
      end
      end
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    • mertocanmertocan Member
      self.noodles:addEventListener(Event.MOUSE_DOWN, self.DragonMouseDown, self.noodles)
      self.noodles:addEventListener(Event.MOUSE_MOVE, self.DragonMouseMove, self.noodles)
      self.noodles:addEventListener(Event.MOUSE_UP, self.DragonMouseUpN, self.noodles)

      it should be

      self:addEventListener(Event.MOUSE_DOWN, self.DragonMouseDown, self)
      self:addEventListener(Event.MOUSE_MOVE, self.DragonMouseMove, self)
      self:addEventListener(Event.MOUSE_UP, self.DragonMouseUpN, self)

      because you are adding to self.noodles sprite and then trying to reach self.noodles.noodles
      My Games. Mert Can KURUM
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    • a00zaa00za Member
      edited March 2013
      i did what you said and the whole stage moved
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    • ar2rsawseenar2rsawseen Maintainer
      Accepted Answer
      @a00za the difference is, if you use
      self.noodles:addEventListener(Event.MOUSE_UP, self.DragonMouseUpN, self.noodles)
      then inside DragonMouseUpN self references to self.noodles, so you need to do:
      function CLL:DragonMouseUpN(event)
    if self.isFocus then
        if your long if statement then self:setVisible(false)
    --etc
end
      but if you do
      self.noodles:addEventListener(Event.MOUSE_UP, self.DragonMouseUpN, self)
      then self inside DragonMouseUpN is referenced to self as in all other methods (to CLL instance).
      Thus you have to do:
      function CLL:DragonMouseUpN(event)
    if self.isFocus then
        if( (self.noodles:getY()>(800)) --etc
end
      http://appcodingeasy.com/Gideros-Mobile
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