anchor.diff:  	call :download_nvtt
   	call :download_cmft
   	call :download_recast
  +	call :download_luajit
   	
   	call :build_physx
   	call :build_nvtt
   	call :build_cmft
   	call :build_recast
  +	call :build_luajit
   	
   	call :deploy_physx
   	call :deploy_nvtt
   	call :deploy_cmft
   	call :deploy_recast
  -	pause
  -
  +	call :deploy_luajit
  +	pause
  +
  +exit /B 0
  +
  +:luajit
  +	cls
  +	echo LuaJIT
  +	echo ===============================
  +	echo  1. Go back
  +	echo  2. Download
  +	echo  3. Build
  +	echo  4. Deploy
  +	echo  5. Open in VS
  +	echo ===============================
  +	choice /C 12345 /N /M "Your choice:"
  +	echo.
  +	if %errorlevel%==1 exit /B 0
  +	if %errorlevel%==2 call :download_luajit
  +	if %errorlevel%==3 call :build_luajit
  +	if %errorlevel%==4 call :deploy_luajit
  +	REM if %errorlevel%==5 start "" %devenv_cmd% "3rdparty\luajit\\compiler\vc15win64\PhysXSDK.sln"
  +	pause
  +goto :luajit
  +
  +:deploy_luajit
  +	copy 3rdparty\luajit\src\lua51.lib ..\external\luajit\lib\win64_vs2017\release\
  +	copy 3rdparty\luajit\src\luajit.lib ..\external\luajit\lib\win64_vs2017\release\
  +	copy 3rdparty\luajit\src\lauxlib.h ..\external\luajit\include
  +	copy 3rdparty\luajit\src\lua.h ..\external\luajit\include
  +	copy 3rdparty\luajit\src\lua.hpp ..\external\luajit\include
  +	copy 3rdparty\luajit\src\luaconf.h ..\external\luajit\include
  +	copy 3rdparty\luajit\src\luajit.h ..\external\luajit\include
  +	copy 3rdparty\luajit\src\lualib.h ..\external\luajit\include
  +exit /B 0
  +
  +:build_luajit
  +	pushd 3rdparty\luajit\src
  +	call msvcbuild.bat
  +	popd
  +exit /B 0
  +
  +:download_luajit
  +	if not exist 3rdparty mkdir 3rdparty
  +	cd 3rdparty
  +	if not exist luajit (
  +		git.exe clone https://github.com/LuaJIT/LuaJIT.git luajit
  +	) else (
  +		cd luajit
  +		git pull
  +		cd ..
  +	)
  +	cd ..
   exit /B 0
   
   :physx
  
positive.code: 	echo  4. Recast navigation
  	echo  5. CMFT
  	echo  6. PhysX
  	echo ===============================
  	choice /C 1234567 /N /M "Your choice:"
  	echo.
  
negative.code: 	if %errorlevel%==4 call :recast
  	if %errorlevel%==5 call :cmft
  	if %errorlevel%==6 call :physx
  	if %errorlevel%==7 call :luajit
  goto :third_party
  
  :all_3rdparty
  