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BASIC protection used on Rear Guard?


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Does anyone know what BASIC protection technique was used on Rear Guard?

 

I see the sector link change trick being used on the program code, but the BASIC program is also protected and obfuscated...

 

I'd like to adapt it to be #FujiNet High Score Enabled.

 

-Thom

 

Rear Guard (1981)(Adventure International)(US)[!][BASIC][turn off write-protect].atx

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2 hours ago, phaeron said:

Overwritten variable name table (VNT).

 

If you load the game in Altirra, use the debugger's .basic_rebuildvnt command to rebuild the VNT with placeholder variable names and then .basic_save to save out a .bas file.

 

That worked great! (that is EXTREMELY HANDY, did not know that there were BASIC commands in the debugger!) I have it working, and now am writing the score scraper. :) Thank you! :)

 

-Thom

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