John Zaitseff
200f7cdf97
Revise the scramble() and unscramble() functions
...
The scramble() and unscramble() functions now use a moving (incrementing)
key for the XOR encryption/decryption. Also include a table of XOR keys
to use at random for encryption.
Revised the scramble() and unscramble() functions to use a moving
(incrementing) key for the XOR encryption/decryption. Also generated a
table of XOR keys to use at random for encryption.
2011-07-14 12:30:23 +10:00
John Zaitseff
16c421574f
Add the scramble() and unscramble() functions
...
These functions provide simple encryption and decryption to thwart casual
cheating!
2011-07-11 23:21:10 +10:00
John Zaitseff
c0943b9f7d
Move (and abstract) the random number functions to utils.c
2011-07-04 17:13:29 +10:00
John Zaitseff
2a3e18460e
Rename intto_game_filename() to game_filename()
2011-07-04 10:28:50 +10:00
John Zaitseff
abd196d2c5
Add the basic I/O functions init_screen(), end_screen() and center()
2011-07-02 21:25:57 +10:00
John Zaitseff
6c90801102
Add the err_exit() and errno_exit() functions
2011-07-02 14:23:35 +10:00
John Zaitseff
ba721ced10
Be stricter about saved game numbers
2011-07-02 09:39:23 +10:00
John Zaitseff
7fa5833fb6
Complete the command line argument processing routines
2011-06-30 15:25:30 +10:00
John Zaitseff
6910370557
Add various header files
...
Add the system.h header file for all system header includes, and utils.c
and utils.h for various low-level utility functions.
2011-06-15 22:34:28 +10:00
