Talk:Painfuck

Questions

• What happens if an odd number is halved? Is the result rounded down? [RE: yes, use integer rounding]
• When cloning the value to the left, what happens when the pointer is at the beginning of the tape? [RE: it stays where it was]
• What does it mean to do the next command half the time? [RE: it does the command 50% of occasions, basically there is a 1/2 probability next command runs.]

- Bangyen (talk) 19:44, 4 May 2022 (UTC)

Encryption/Decryption Explanation

By User:Lemonz:

• RE: Ok yea, I suck at documenting this kind of thing, but here's an explanation:
• To get the right commands:
• Apply decrypt:
  • Get all the remaining characters after the one that was just run,
  • Find the character AFTER state.
  • Then, Find the corresponding character in the BEFORE state
  • Thats the new character in that position, place it there and remove the old.
• So:
• pso is the starting state
• the p is kept as is.
• the s and o are changed to the corresponding characters: s corresponds to t, and o corresponds to s.
• Keep the t as so, and change the third character (the substituted s) to the corresponding character (t)

• When the interpreter runs the program. do this to get the new command:
  • Get all the remaining characters after the one that was just run,
  • Find the character BEFORE state.
  • Then, Find the corresponding character in the AFTER state
  • Thats the new character in that position, place it there and remove the old.
• so, the excample ptt is run like this:
• keep p as is
• the t's are encrypted to s (the corresponding)
• run the s normally, then encrypt the next s to an o

• these two processes should result in each other, as the program after the interpreter does the encrypting is the same as what you wanted to write.