I've been reading the interesting article on this site about "Application of Genetic Programming to the 'Snake Game'" in the AI section: http://www.gamedev.net/reference/articles/article1175.asp I can follow most of it but I am having trouble understanding the notation that the author uses for showing the function trees of the varous solutions that were generated (this is the solution for the zig-zagger from the results section): (ifFoodAhead (ifDangerLeft (right )(ifDangerRight (1forward )(ifDangerAhead (left )( 1forward )))) (ifDangerAhead (ifDangerLeft (right )(left )) (ifDangerLeft (ifDangerRight (forward )( 2right )) (progn2 (left )(right ))))) I understand that it is a tree of functions, like the usually 'tree' used in computing: R |1 2 /|3 4 5 But how do you tell from the notation above which branch is which? Cheers, Convict@Large PS: ack can't get any indenting to work [edited by - convict@large on March 5, 2003 4:35:43 AM] [edited by - convict@large on March 5, 2003 4:36:02 AM]

Tree was ment to be:

     R    / \     1   2        /|\           1 2 3     

Edit: Please use the 'code' tag for overriding the auto formatting of the forum, Timkin.

[edited by - Timkin on March 5, 2003 6:39:34 PM]

Timkin and TinOmen thanks for your help!

Convict@Large