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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit f23f22d71c
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Task/Langtons-ant/Prolog/langtons-ant.pro Normal file
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%_______________________________________________________________
% Langtons ant.
:-dynamic
black/1.
plot_point(Row, Col) :- % Output a 5x5 black box at R,C
new(C, box(5,5)), X is Col * 5 - 2, Y is Row * 5 - 2,
send(C, colour, colour(black)), send(C, fill_pattern, colour(blue)),
send(C, center(point(X,Y))), send(@win, display, C).
update_win :- % Make a 500x500 window, find all the black points and plot them
new(@win, window('Langtons Ant')),
send(@win, size, size(500,500)), send(@win, open),
black(Row/Col),plot_point(Row,Col),fail.
update_win.
direction(Row, Col, left) :- black(Row/Col), !, retract(black(Row/Col)).
direction(Row, Col, right):- not(black(Row/Col)), !, assert(black(Row/Col)).
move(_, Row,Col) :- (Row < 0; Col < 0; Row > 99; Col > 99), !.
move(north,Row,Col) :-
(direction(Row,Col,left), C is Col - 1, !, move(west, Row, C));
(direction(Row,Col,right), C is Col + 1, !, move(east, Row, C)).
move(south,Row,Col) :-
(direction(Row,Col,right), C is Col - 1, !, move(west, Row, C));
(direction(Row,Col,left), C is Col + 1, !, move(east, Row, C)).
move(east,Row,Col) :-
(direction(Row,Col,right), R is Row + 1, !, move(south, R, Col));
(direction(Row,Col,left), R is Row - 1, !, move(north, R, Col)).
move(west,Row,Col) :-
(direction(Row,Col,left), R is Row + 1, !, move(south, R, Col));
(direction(Row,Col,right), R is Row - 1, !, move(north, R, Col)).
go :- retractall(black(_)), move(north,49,49), update_win.