cocos-lua基础学习（八）Layer类学习笔记

创建

local layer = cc.Layer:create()

local layer1 = cc.LayerColor:create(cc.c4b(192, 0, 0, 255), s.width, s.height/2)

--渐变

local  layer2 = cc.LayerGradient:create(cc.c4b(0, 0, 0, 127), cc.c4b(255, 255, 255, 127))

--渐变

local layer3 = cc.LayerGradient:create()
layer3:setContentSize(cc.size(80, 80))
layer3:setPosition(cc.p(150,140))
layer3:setStartColor(cc.c3b(255, 0, 0))
layer3:setEndColor(cc.c3b(255, 0, 255))
layer3:setStartOpacity(255)
layer3:setEndOpacity(255)
layer3:setBlendFunc(cc.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA))
ret:addChild(layer3)

绑定事件

local listener = cc.EventListenerTouchAllAtOnce:create()
listener:registerScriptHandler(Sprite1.onTouchesEnd,cc.Handler.EVENT_TOUCHES_ENDED )
local eventDispatcher = layer:getEventDispatcher()
eventDispatcher:addEventListenerWithSceneGraphPriority(listener, layer)

layer:registerScriptHandler(SpriteColorOpacity.onEnterOrExit)

function SpriteColorOpacity.onEnterOrExit(tag)
    if tag == "enter" then
        SpriteColorOpacity.onEnter()
    elseif tag == "exit" then
        SpriteColorOpacity.onExit()
    end
end    

layer:scheduleUpdateWithPriorityLua(update,)
layer:unscheduleUpdate()