cocos2d-x lua 触摸事件
version: cocos2d-x 3.6
1.监听
function GameLayer:onEnter()
local eventDispatcher = self:getEventDispatcher()
local function onTouchBegan(touch,event)
local locationInNode = self:convertToNodeSpace(touch:getLocation())
local s = self:getContentSize()
local rect = cc.rect(0,0,s.width,s.height)
if cc.rectContainsPoint(rect,locationInNode) then
self:setColor(cc.c3b(255,0))
return true
end
return false
end
local function onTouchMoved(touch,event)
end
local function onTouchEnded(touch,event)
self:setColor(cc.c3b(255,255,255))
end
local listener = cc.EventListenerTouchOneByOne:create()
self._listener = listener
listener:setSwallowTouches(true)
listener:registerScriptHandler(onTouchBegan,cc.Handler.EVENT_TOUCH_BEGAN )
listener:registerScriptHandler(onTouchMoved,cc.Handler.EVENT_TOUCH_MOVED )
listener:registerScriptHandler(onTouchEnded,cc.Handler.EVENT_TOUCH_ENDED )
if 0 == self._fixedPriority then
eventDispatcher:addEventListenerWithSceneGraphPriority(listener,self)
else
eventDispatcher:addEventListenerWithFixedPriority(listener,self._fixedPriority)
end
end
2.移除
function TouchableSpriteWithFixedPriority:onExit()
local eventDispatcher = self:getEventDispatcher()
eventDispatcher:removeEventListener(self._listener)
end
3.注意
onEnter和onExit在lua中不会因节点别add和remove而直接被调用,当子节点被父节点add和remove时,会发送enter和exit的消息,所以需要再初始化节点的时候,监听消息,并在收到消息后调用onEnter或onExit。
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