Surgeon Simulator 2013 Level Select

@echo off
rem - Place in ss2013_Data
set missing=none
if not exist level1 set missing=level1
if not exist level2 set missing=level2
if not exist level3 set missing=level3
if not exist level4 set missing=level4
if not exist level5 set missing=level5
if not exist level6 set missing=level6

if %missing%==none goto allpresent

if not exist levelx goto nolevelx
rename level0 %missing%
rename levelx level0

:allpresent
echo 0) Heart Transplant (default)
echo 1) Double Kidney Transplant
echo 2) Brain Transplant
echo 3) Heart Transplant (ambulance mode)
echo 4) Double Kidney Transplant (ambulance mode)
echo 5) Brain Transplant (ambulance mode)
echo 6) Heart Transplant (in SPAAAAAAAAACE!!!)
set /p selection="Enter replacement level ID (0-6): "
if %selection%==0 goto end
set selection=level%selection%
rename level0 levelx
rename %selection% level0

goto end
:nolevelx
echo Fatal error: levelx was not found!
pause

:end