0905 - lite 更好的调试 2

《lite 更好的调试》 的实现有些不对劲，流程不对，实现依赖了 cocos 的包和框架，导致出现问题时，不能在模拟器中显示错误。解决如下：

1. __G__TRACKBACK__ 函数里面只包括 c++ 导出的方法
2. 所以的 require 都放到 main 函数里面去，就能够处理框架内的错误了

local STP = require "StackTracePlus"
local _traceback = debug.traceback
debug.traceback = STP.stacktrace

local winsize = cc.Director:getInstance():getWinSize()
local target = cc.Application:getInstance():getTargetPlatform()
__G__TRACKBACK__ = function ( msg )

    local message = msg
    local msg, origin_error = debug.traceback(msg, 3)
    print(msg)

    -- report lua exception
    if target == 4 or target == 5 then -- ios
        buglyReportLuaException(tostring(message), _traceback())
    elseif target == 2 then -- mac
        local msg = debug.getinfo(2)
        local info = cc.Label:createWithSystemFont(message, 'sans', 32)
        info:setWidth(winsize.width)
        info:setAnchorPoint({x=0,y=1})
        info:setPosition(0, winsize.height)
        info:setTextColor({r=255,g=0,b=0,a=255})

        local scene = cc.Director:getInstance():getRunningScene()
        if scene then
            scene:addChild(info, 998)
        else
            scene = cc.Scene:create()
            scene:addChild(info)
            cc.Director:getInstance():runWithScene(scene)
        end

        local function onTouchBegan(touch, event)
            return true
        end
        local function onTouchEnded(touch, event)
            os.execute(string.format('subl %s:%d', cc.FileUtils:getInstance():fullPathForFilename(msg.source), msg.currentline))
            info:removeSelf()
        end

        local listener = cc.EventListenerTouchOneByOne:create()
        listener:registerScriptHandler(onTouchBegan,40)--cc.Handler.EVENT_TOUCH_BEGAN
        listener:registerScriptHandler(onTouchEnded,42)--cc.Handler.EVENT_TOUCH_ENDED
        local eventDispatcher = info:getEventDispatcher()
        eventDispatcher:addEventListenerWithSceneGraphPriority(listener, info)
    end

    return msg
end

local function main()
    require "config"
    require "cocos.init"

    require 'pack'
    require 'pbc.pbc'
    if CC_REMOTE_DEBUG then
        require('mobdebug').start()
    end

    local app = require('app.App'):instance()
    app:run('LoginController')
end

local status, msg = xpcall(main, __G__TRACKBACK__)
if not status then
    print(msg)
end