67 lines
1.8 KiB
Common Lisp
67 lines
1.8 KiB
Common Lisp
;; generating match constraints
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;; there are line matching constraints, where the lines need to be the same length and
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;; ending matching constraints
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;; there's also the possibility of generating lines lengths according to a function
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(defvar *poem-line* 0)
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(defvar *poem-stanza* 0)
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(defvar *constraints* nil)
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(defvar *avg-line* 0)
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(defun up-down (r)
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#'(lambda (x) (+ x (- (random (* 2 r)) r ))))
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;; this is really a stub for what will probably get more complicated
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(defun gen-line-f (f)
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(funcall f *poem-line*))
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(defun gen-line-rand (i)
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(funcall (up-down (floor (/ *avg-line* 2))) *avg-line*))
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(defun gen-line-sine (i)
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(max (floor (+ *avg-line* (funcall (sines 3 -3 1 2) i))) 2))
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(defun sines (&rest args)
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#'(lambda (time)
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(let ((res 0))
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(dotimes (i (length args))
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(setf res (+ res (* (nth i args) (sin (/ time (+ 1 i)))))))
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res)))
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(defun gen-stanza (avg-stanza line-fun)
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(loop for x from 1 to (funcall (up-down 3) avg-stanza)
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do (incf *poem-line*)
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collect (gen-line-f line-fun)))
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(defun gen-poem (num-stanza avg-stanza line-fun)
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(loop for x from 1 to (funcall (up-down 2) num-stanza)
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collect (gen-stanza avg-stanza line-fun)))
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(defun print-line (l)
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(let ((s ""))
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(dotimes (i l)
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(setf s (concatenate 'string "-" s)))
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(format t "~a: ~a~%" l s)))
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;; takes a list of stanzas and prints it
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(defun print-poem (poem)
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(dolist (s poem)
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(dolist (l s)
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(print-line l))
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(format t "~%")))
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(defun main (argv)
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(let* ((fun-choice (parse-integer (nth 1 argv)))
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(num-stanza (parse-integer (nth 2 argv)))
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(avg-stanza (parse-integer (nth 3 argv)))
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(*avg-line* (parse-integer (nth 4 argv)))
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(line-fun
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(cond ((= fun-choice 0) #'gen-line-rand)
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((= fun-choice 1) #'gen-line-sine))))
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(setf *random-state* (make-random-state t))
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(print-poem (gen-poem num-stanza avg-stanza line-fun))))
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