Background=class("Background",function()
    return cc.ClippingNode:create()
end)

Background.ctor=function(self)
    local size=cc.Director:getInstance():getWinSize()
    self:setPosition(size.width/2,size.height/2)
    self:setAnchorPoint(0.5,0.5)
    local action=cc.RotateBy:create(1,90)
    self:runAction(cc.RepeatForever:create(action))

    self:setStencil(self:block())
end

--背景图片
Background.block=function(self)
    local sprite=cc.Sprite:create()
    sprite:setTexture("Images/blocks.png")
    sprite:setScale(3)
    return sprite
end

Background.create=function()
    local sprite=Background.new()
    return sprite
end

return Background