Cocos2dx_背景层循环滚动

概述function MovieLayer:update(dt) local posY1 = self.m_bg1:getPositionY() local posY2 = self.m_bg2:getPositionY() local speed = 3 posY1 = posY1 + speed posY2 = posY2 + speed local height = winSiz

function MovIELayer:update(dt)	local posY1 = self.m_bg1:getpositionY()	local posY2 = self.m_bg2:getpositionY()	local speed = 3	posY1 = posY1 + speed	posY2 = posY2 + speed	local height = winSize.height	if posY1 > height * 1.5 then		posY2 = height * 0.5		posY1 = -height * 0.5	end	if posY2 > height * 1.5 then		posY1 = height * 0.5		posY2 = -height * 0.5	end	self.m_bg1:setpositionY(posY1)	self.m_bg2:setpositionY(posY2)end

function MovIELayer:init()    local m_bg1 = cc.Sprite:create("game_bg1.png")    m_bg1:setposition(cc.p(winSize.wIDth/2,winSize.height/2))    self:addChild(m_bg1)    self.m_bg1 = m_bg1    local m_bg2 = cc.Sprite:create("game_bg1.png")    m_bg2:setposition(cc.p(winSize.wIDth/2,-winSize.height/2))    self:addChild(m_bg2)    self.m_bg2 = m_bg2    local function updateFunc(dt)    	self:update(dt)    end    if self.updateHandler == nil then	    self.updateHandler = scheduler:scheduleScriptFunc(updateFunc,false)    endend

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