|
Conway's game of Life Patrick J. Naughton. (port D.Bagley 1997) 1991
History 01-Nov-2000: Allocation checks 03-Oct-2000: Added more randomness in pattern 90 degree orientation and mirror image. 08-Dec-1997: Paul Callahan's B2a/S2b34 rule added. Described on the news site for cellular-automata. http://www.cs.jhu.edu/~callahan/lifepage.html http://www.cs.jhu.edu/~callahan/hexrule.txt B2a/S2b34: Birth of x if 2a, Survival of x if 2b, 3, or 4 neighbors Assume symmetry. (2a, 2b, 2c: 2o, 2m, 2p original notation) O O O . O . 2a: . x . 2b: . x O 2c: . x . . . . . . O Also Bob Andreen's rule (my own notation for consistency) B2a3a4b/S2a2b4a (original notation: 234'B/22'4S) O O O O O . 3a: . x O 3b: . x . 3c: . x O . . . O O . O O O O O O 4a: . x O 4b: . x O 4c: . x . . O O . O O Some other rules B2a3b3c5/S12b2c3a4b4c6 B23a3c4b4c6/S12b2c3c4a56 B2a2c6/S13b 27-Oct-1997: xpm and ras capability added. 04-Jun-1997: Removed old algorithm, now use wator's. I could not understand it and had trouble adding more features. New algorithm is more efficient iff there lots of blank areas (ptr loop rather than a double array loop) 10-May-1997: Compatible with xscreensaver 07-May-1997: life neighbor option. Still have to fix -neighbor 3 07-Jan-1995: life now has a random soup pattern. 07-Dec-1994: life now has new organisms. They are now better centered. Some of the nonperiodic forms were removed. New life forms were taken from xlife (an AMAZING collection of life forms). life's gliders now come from the edge of the screen except when generated by a life form. 23-Nov-1994: Bug fix for different iconified window sizes 21-Jul-1994: Took out bzero & bcopy since memset & memcpy is more portable 10-Jun-1994: Changed name of function 'kill', which is a libc function on many systems from Victor Langeveld Changes in original xlock 24-May-1991: Added wraparound code from johnson_at_bugs.comm.mot.com. Made old cells stay blue. Made batchcount control the number of generations until restart. 29-Jul-1990: support for multiple screens. 07-Feb-1990: remove bogus semi-colon after #include line. 15-Dec-1989: Fix for proper skipping of {White,Black}Pixel() in colors. 08-Oct-1989: Moved seconds() to an extern. 20-Sep-1989: Written, life algorithm courtesy of Jim Graham
|
|
|
|