local function main() 
  collectgarbage("collect") 
  -- avoid memory leak 
  collectgarbage("setpause", 100) 
  collectgarbage("setstepmul", 5000) 
 
  -- initialize director 
  local director = cc.Director:getInstance() 
 
  --turn on display FPS 
  director:setDisplayStats(true) 
 
  --set FPS. the default value is 1.0/60 if you don't call this 
  director:setAnimationInterval(1.0 / 60) 
   
  cc.Director:getInstance():getOpenGLView():setDesignResolutionSize(320, 480, 1) 
   
  --create scene  
  local scene = require("GameScene") 
  local gameScene = scene:startGame() 
 
end 

require("Managers.SceneManager") 
require("Managers.LayerManager") 
 
local GameScene = class("GameScene") 
local scene = nil 
 
function GameScene:startGame() 
  --初始化 
  scene = cc.Scene:create() 
  if cc.Director:getInstance():getRunningScene() then 
    cc.Director:getInstance():replaceScene(scene) 
  else 
    cc.Director:getInstance():runWithScene(scene) 
  end 
  SceneManager:initLayer(scene) 
  self:enterGame() 
end 
 
function GameScene:enterGame() 
  LayerManager:getInstance():gotoLayerByType(LAYER_TYPE_MAIN) 
end 
 
return GameScene 

--场景管理器 
SceneManager = {} 
 
--背景层 
bgLayer = nil 
--游戏层 
gameLayer = nil 
--弹窗层 
panelLayer = nil 
 
function SceneManager:initLayer(scene) 
  bgLayer = cc.Layer:create() 
  scene:addChild(bgLayer) 
   
  gameLayer = cc.Layer:create() 
  scene:addChild(gameLayer) 
   
  panelLayer = cc.Layer:create() 
  scene:addChild(panelLayer) 
end 

--Layer管理器 
LayerManager = {} 
 
LAYER_TYPE_MAIN = "LAYER_TYPE_MAIN" 
 
local curLayer = nil 
 
function LayerManager:new(o) 
  o = o or {} 
  setmetatable(o,self) 
  self.__index = self 
  return o 
end 
 
function LayerManager:getInstance() 
  if self.instance == nil then 
    self.instance = self:new() 
  end 
   
  return self.instance 
end 
 
function LayerManager:gotoLayerByType(type) 
  if curLayer ~= nil then 
    curLayer:destroy() 
  end 
   
  if type == "LAYER_TYPE_MAIN" then 
    local layer = require("Controller.MainLayerController"):create() 
    curLayer = layer 
  end 
end 

function MainLayerC:create() 
  local layer = MainLayerC:new() 
  return layer 
end 
 
function MainLayerC:ctor() 
  self:createUI()--创建界面 
  self:addBtnEventListener()--添加按钮监听 
end 
 
function MainLayerC:createUI() 
  local layer = require("View.MainLayerView") 
  self.mainLayer = layer:createUI() 
  gameLayer:addChild(self.mainLayer) 
end 

local eventDispatcher = cc.Director:getInstance():getEventDispatcher() 
 
local MainLayerV = class("MainLayerView",function() 
  return cc.Layer:create() 
end) 
 
function MainLayerV:createUI() 
  local mainLayer = MainLayerV:new() 
  return mainLayer 
end 
 
function MainLayerV:ctor() 
  self:initUI() 
end 
 
function MainLayerV:initUI() 
  local winSize = cc.Director:getInstance():getWinSize() 
  self.bg = cc.Sprite:create(ResManager.main_bg) 
  self.bg:setPosition(winSize.width / 2,winSize.height / 2) 
  self:addChild(self.bg) 
   
  local function menuCallback(tag,menuItem) 
    local event = cc.EventCustom:new(EVENT_CLICK_MENU_MAIN) 
    event._usedata = tag 
    eventDispatcher:dispatchEvent(event) 
  end 
   
  self.btnItem1 = cc.MenuItemImage:create(ResManager.main_btn1,ResManager.main_btn1,ResManager.main_btn1) 
  self.btnItem1:setPosition(winSize.width / 2,winSize.height / 3) 
  self.btnItem1:setTag(1) 
  self.btnItem1:registerScriptTapHandler(menuCallback) 
   
  self.btnItem2 = cc.MenuItemImage:create(ResManager.main_btn2,ResManager.main_btn2) 
  self.btnItem2:setPosition(winSize.width / 2,winSize.height / 2) 
  self.btnItem2:setTag(2) 
  self.btnItem2:registerScriptTapHandler(menuCallback) 
   
  self.btnItem3 = cc.MenuItemImage:create(ResManager.main_btn3,ResManager.main_btn3) 
  self.btnItem3:setPosition(winSize.width / 2,winSize.height / 3 * 2) 
  self.btnItem3:setTag(3) 
  self.btnItem3:registerScriptTapHandler(menuCallback) 
   
  --创建菜单 
  self.menu = cc.Menu:create(self.btnItem1,self.btnItem2,self.btnItem3) 
  self.menu:setPosition(0,0) 
  self:addChild(self.menu) 
end 
 
return MainLayerV 

--资源管理器 
ResManager = {} 
 
--主界面 
ResManager.main_bg = "bg_big.png" 
ResManager.main_btn1 = "cell.png" 
ResManager.main_btn2 = "cell2.png" 
ResManager.main_btn3 = "cell3.png" 

function MainLayerC:addBtnEventListener() 
  --按钮事件处理 
  local function eventBtnListener(event) 
    local eventNum = event._usedata 
    local switch = { 
      [1] = function() 
        print("Btn one") 
      end, 
      [2] = function() 
        print("Btn two") 
      end, 
      [3] = function() 
        print("Btn three") 
      end 
    } 
    switch[eventNum]() 
  end 
  --注册事件处理 
  self._eventBtnListener = cc.EventListenerCustom:create(EVENT_CLICK_MENU_MAIN,eventBtnListener) 
  eventDispatcher:addEventListenerWithSceneGraphPriority(self._eventBtnListener,self.mainLayer) 
end