Make a sprite disappear in a specific region using drag a drop

a00za

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

thanhquan1512

O.o

The x and y coordinate seem too large, what is your device settings?

a00za

iPad 3

mertocan

(self:getX()<(900)) and (self:getX()<(1000)) I think there is a problem here. Are you mean (self:getX()>(900)) and (self:getX()<(1000)) ??

a00za

@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)"

zvardin

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.

mertocan

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

a00za

i have defined it in the int()
self.noodles=Bitmap.new(Texture.new("pics/nood.png"))

mertocan

So change self.nood:setVisible(false) to self.noodles:setVisible(false)

a00za

Sorry for the error in writing
self.nood=Bitmap.new(Texture.new("pics/nood.png"))

mertocan

Can you send the project? I think you are using nood variable instead of self.nood

a00za

here is the file

a00za

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

mertocan

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

a00za

i did what you said and the whole stage moved

ar2rsawseen

@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