RCT2 Launch Patch (Unofficial)

The following is a script that I wrote to validate a registry setting before launching RCT2. Hopefully some of you can benefit from this. Copy and paste the code below into Notepad and name it something like "rct2_launcher.bat", the ".bat" is required, and save it to your Desktop or somewhere else. Please note that, when saving, you should select "All Files" from the "Save as Type" drop-down and "ASCII" from the "Encoding" drop-down. Then, all you have to do is double click the newly created file.

rct2_launcher.bat

 @echo off
 rem ###########
 rem # Author: Andrew Sohn <asohn.unique@gmail.com>
 rem # Date: 2011-10-08
 rem # File: rct2_launcher.bat
 rem # Version: 0.1
 rem # Purpose:
 rem #   This is a launcher for RollerCoaster Tycoon 2 that fixes that darn error if you happen
 rem #   to put the CD into the wrong optical drive or maybe the labels on your mounted hardware
 rem #   have changed since you installed the game.
 rem #   This script determines the volume label of the optical drive (actually, this will probably
 rem #   work with no-cd-hacks and virtual drives as well) containing your RollerCoaster Tycoon 2
 rem #   CD and then checks to make sure the proper value is in the registry. After all that magic
 rem #   it will/should launch the game for you by looking at other fancy registry values.
 rem #   This script will effectively serve as a drop-in-replacement for the shortcut that you use
 rem #   to launch RollerCoaster Tycoon 2.
 rem #   This script will not catch the error if the game is launch via AutoPlay.
 rem # Legal Disclaimer:
 rem #   No warranty. Use at your own discretion. I tested it pretty thoroughly.
 rem #   There are checks for everything that could possibly go wrong but just in case I
 rem #   have overlooked something or something goes wrong don't worry it is fixable without
 rem #   the need to reinstall. Feel free to contact me at the e-mail address above with any
 rem #   questions, concerns, or praises.
 rem #   This will not void your warranty or change the game experience in ANY way.
 rem #   This script was developed independently and I have no affiliation with the manufacturer
 rem #   of the game or any of their affiliates.
 rem #   Tested on WinXP using RCT2TTP* (but it should work for all versions of RCT2)
 rem #   *RollerCoaster Tycoon 2 Triple Thrill Pack is one of the best games ever.
 rem ###########
 
 
 setlocal enabledelayedexpansion
 
 
 for /f "usebackq tokens=1" %%i in (`mountvol ^| find ":\"`) do (
   fsutil fsinfo drivetype %%i | find "-ROM" > nul
   if not errorlevel 1 (
     if exist %%i"rct2.ico" (
       set CDROM=%%i
       set CDROM=!CDROM:~0,2!
       reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v SetupPath | findstr "REG_SZ..*!CDROM!" > nul
       if errorlevel 1 (
         reg add   "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v SetupPath /d !CDROM! /f > nul
         reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v SetupPath | findstr "REG_SZ..*!CDROM!" > nul
         if errorlevel 1 (
           echo.Failed to edit registry value for SetupPath
           goto die
         )
       )
       goto find_exe_path
     )
   )
 )
 echo.Could not find CD for RollerCoaster Tycoon 2
 goto die
 
 :find_exe_path
 reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Path | find "REG_SZ" > nul
 if not errorlevel 1 (
   for /f "usebackq tokens=1 delims=Z" %%i in (`reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Path ^| find "REG_SZ"`) do (set prefix=%%i)
   for /f "usebackq tokens=1 delims="  %%i in (`reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Path ^| find "REG_SZ"`) do (
     set exe_path=%%i
     call set exe_path=%%exe_path:!prefix!=%%
     set exe_path=!exe_path:~2!
     goto find_exe
   )
 )
 echo.Could not determine path to RollerCoaster Tycoon 2 executable
 goto die
 
 :find_exe
 reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Executable | find "REG_SZ" > nul
 if not errorlevel 1 (
   for /f "usebackq tokens=1 delims=Z" %%i in (`reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Executable  ^| find "REG_SZ"`) do (set prefix=%%i)
   for /f "usebackq tokens=1 delims="  %%i in (`reg query "HKLM\SOFTWARE\Infogrames\RollerCoaster Tycoon 2 Setup" /v Executable  ^| find "REG_SZ"`) do (
     set exe=%%i
     call set exe=%%exe:!prefix!=%%
     set exe=!exe:~2!
     goto launch_game
   )
 )
 echo.Could not determine name of RollerCoaster Tycoon 2 executable
 goto die
 
 :launch_game
 if exist "!exe_path!\!exe!" (
   !exe_path!\!exe!
   goto eof
 )
 echo.Could not find file: !exe_path!\!exe!
 goto die
 
 :die
 echo.
 pause
 exit
 
 :eof  

☀rct2_launcher.bat