quick cocos map使用

'''lua
local MainScene = class("MainScene", function()
return display.newScene("MainScene")
end)

function MainScene:ctor()
self.bloods={}

local blood=display.newSprite("mark.png",display.cx-100,display.cy):addTo(self)
self.bloods[blood]=blood
local blood1=display.newSprite("mark.png",display.cx,display.cy):addTo(self)
self.bloods[blood1]=blood1
local blood2=display.newSprite("mark.png",display.cx+100,display.cy):addTo(self)
self.bloods[blood2]=blood2
for key, blood in pairs(self.bloods) do
    print("**")
    self.bloods[blood]=nil
    blood:removeSelf()
end

end

function MainScene:onEnter()
end

function MainScene:onExit()
end

return MainScene
'''