cocos2dx 新手引导

local GuideLayer = class("GuideLayer",function()
return cc.Layer:create()
end)

function GuideLayer.create(tTarget,fnCallBack)
local layer = GuideLayer.new()
if layer:Init(tTarget,fnCallBack)then
return layer
end

end

function GuideLayer:ctor()

end
function GuideLayer:Init(tTarget,fnCallBack)
local winSize = cc.Director:getInstance():getWinSize()
local clipNode = cc.ClippingNode:create()
self:addChild(clipNode) --底板

local layer = cc.LayerColor:create(cc.c4b(0,0,0,110))
clipNode:setInverted(true)
clipNode:addChild(layer)
--clipNode:setAlphaThreshold(0)

local radius = 55
local count = 200
local angel =  2 * 3.14 / count
local tCircle = {}
for i = 1,count do
local radian = i * angel
tCircle[i] = tCircle[i] or {}
tCircle[i].x = radius * math.cos(radian)
tCircle[i].y = radius * math.sin(radian)
end

local stencil = cc.DrawNode:create()
stencil:drawPolygon(tCircle,count,cc.c4b(1,0,0,1),0,cc.c4b(1,0,0,1))
local p = cc.p(tTarget:getPosition())
local anchorPoint = tTarget:getAnchorPoint()
local size = tTarget:getContentSize()

local wordPos = tTarget:getParent():convertToWorldSpace(p)
--计算出模板的有效区域，,转换成屏幕坐标，否则模板有些地方点击失效
local rect = cc.rect(wordPos.x - size.width * anchorPoint.x ,wordPos.y - size.height * anchorPoint.y,size.width,size.height)
stencil:setPosition(wordPos.x,wordPos.y)
stencil:setContentSize(size)
clipNode:setStencil(stencil) --模板

local function OnTouchBegan(touch, event)
return true;
end

local function OnTouchEnded(touch, event)
print("touchend")
local point = touch:getLocation()
local rect = stencil:getBoundingBox()
if cc.rectContainsPoint(rect,point) then
print("执行了回调")
fnCallBack()
end
end

local maskListener = cc.EventListenerTouchOneByOne:create();
maskListener:registerScriptHandler(OnTouchBegan, cc.Handler.EVENT_TOUCH_BEGAN);
maskListener:registerScriptHandler(OnTouchEnded, cc.Handler.EVENT_TOUCH_ENDED);
local eventDispatcher = self:getEventDispatcher();
eventDispatcher:addEventListenerWithSceneGraphPriority(maskListener, self);
maskListener:setSwallowTouches(true)
return true
end
return GuideLayer

require "Cocos2d"
require "Cocos2dConstants"

local GameScene = class("GameScene",function()
return cc.Scene:create()
end)

function GameScene.create()
local scene = GameScene.new()
if scene:Init()then
return scene
end

end

function GameScene:ctor()
self.visibleSize = cc.Director:getInstance():getVisibleSize()
self.origin = cc.Director:getInstance():getVisibleOrigin()
end

function GameScene:Init()
local winSize = cc.Director:getInstance():getWinSize()
local sprite = cc.Sprite:create("res/Hello.png")
sprite:setPosition(winSize.width/3*2,winSize.height/2)
self:addChild(sprite)
--sprite:setScale(0.2)
self.tTarget = sprite
sprite:setScale(0.5)

local GuideLayer  = require("GuideLayer")
local guide
local tCopy = cc.Sprite:create("res/Hello.png")
guide = GuideLayer.create(sprite,function()guide:removeFromParent() end)
self:addChild(guide)
return true
end

return GameScene