Cocos2dx-lua触摸事件处理

方式1：

local MainScene = class("MainScene", cc.load("mvc").ViewBase)function MainScene:onCreate()-- add background imagelocal layer = cc.Layer:create()layer:addTo(self)layer:addChild(display.newSprite("bg_0.jpg"):move(display.center))-- add HelloWorld label--local startBtn = cc.Label:createWithSystemFont("开始", "Arial", 20)local startBtn = cc.Sprite:create("GameScene_nn.png", cc.rect(760,0,250,80))startBtn:setScale(0.25,0.25)startBtn:move(display.center)layer:addChild(startBtn)--local tmpLayer = cc.Layer.create()local startLb = cc.Label:createWithSystemFont("开始", "Arial", 40)startBtn:addChild(startLb)startLb:setPosition(120,50)local function touchBegan(touch, event)--取得注册事件的节点，这里是layerlocal node = event:getCurrentTarget()--touch:getPreviousLocationInView():取得之前触摸点的位置信息 UI坐标--getPreviousLocation() :OpenGL坐标--getLocationInView():当前坐标--getLocation():print(touch)return falseendlocal function touchMoved(touch, event)return falseendlocal function touchEnded(touch, event)return falseendlocal function touchCanceled(touch, event)return falseendlocal listen = cc.EventListenerTouchOneByOne:create()listen:registerScriptHandler(touchBegan, cc.Handler.EVENT_TOUCH_BEGAN)listen:registerScriptHandler(touchMoved,cc.Handler.EVENT_TOUCH_MOVED)listen:registerScriptHandler(touchEnded,cc.Handler.EVENT_TOUCH_ENDED)listen:registerScriptHandler(touchCanceled,cc.Handler.EVENT_TOUCH_CANCELLED)local eventDispatcher = layer:getEventDispatcher()--节点添加的先后顺序为优先级的添加监听器方式，节点越上层，优先级越高--eventDispatcher:addEventListenerWithSceneGraphPriority(listen,layer)--void EventDispatcher::addEventListenerWithFixedPriority(EventListener* listener, int fixedPriority)--固定优先级的添加监听器方式,fixedPriority>0, 数值越小，优先级越高eventDispatcher:addEventListenerWithFixedPriority(listen, 1)
end
return MainScene

方式2：

   local function onTouch(eventType, x, y)if eventType == "began" thenreturn trueelseif eventType == "ended" thenreturn onTouchEnded(x, y)endendlayer:setTouchEnabled(true)layer:registerScriptTouchHandler(onTouch)

示例: 按钮点击后大小变化

local MainScene = class("MainScene", cc.load("mvc").ViewBase)function MainScene:onCreate()-- add background imagelocal layer = cc.Layer:create()layer:addTo(self)layer:addChild(display.newSprite("bg_0.jpg"):move(display.center))-- add HelloWorld label--local startBtn = cc.Label:createWithSystemFont("开始", "Arial", 20)local startBtn = cc.Sprite:create("GameScene_nn.png", cc.rect(760,0,250,80))startBtn:setScale(0.25,0.25)startBtn:move(display.center)layer:addChild(startBtn)--local tmpLayer = cc.Layer.create()local startLb = cc.Label:createWithSystemFont("开始", "Arial", 40)startBtn:addChild(startLb)startLb:setPosition(120,50)local startBtn1 = cc.Sprite:create("GameScene_nn.png", cc.rect(760,0,250,80))startBtn1:setScale(0.25,0.25)startBtn1:setPosition(cc.p(200,100))--startBtn1:move(display.center)layer:addChild(startBtn1)local function touchBegan(touch, event)local node = event:getCurrentTarget()local location = node:convertToNodeSpace(touch:getLocation())local targetSize = node:getContentSize()local rect = cc.rect(0,0,targetSize.width, targetSize.height)if cc.rectContainsPoint(rect, location) thennode:setScale(0.21,0.21)if node==startBtn thenprint("click button 1")elseprint("click button 2")endendreturn trueendlocal function touchMoved(touch, event)print("touchMoved")return falseendlocal function touchEnded(touch, event)local node = event:getCurrentTarget()node:setScale(0.25,0.25)return trueendlocal function touchCanceled(touch, event)print("touchCanceled")return falseendlocal listen = cc.EventListenerTouchOneByOne:create()listen:registerScriptHandler(touchBegan, cc.Handler.EVENT_TOUCH_BEGAN)listen:registerScriptHandler(touchMoved,cc.Handler.EVENT_TOUCH_MOVED)listen:registerScriptHandler(touchEnded,cc.Handler.EVENT_TOUCH_ENDED)listen:registerScriptHandler(touchCanceled,cc.Handler.EVENT_TOUCH_CANCELLED)--local eventDispatcher = layer:getEventDispatcher()local eventDispatcher = cc.Director:getInstance():getEventDispatcher()eventDispatcher:addEventListenerWithSceneGraphPriority(listen,startBtn)local listen1 = listen:clone()eventDispatcher:addEventListenerWithSceneGraphPriority(listen1,startBtn1)end
return MainScene

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