mirror of
https://github.com/justinethier/cyclone.git
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f0bf9fc1d4
This change allows libraries to expand properly when cond-expand contains multiple sub-expressions. Previously it only worked properly if the sub-expressions were begin's.
73 lines
1.7 KiB
Scheme
73 lines
1.7 KiB
Scheme
(define-library (example life)
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(import (except (scheme base) set!)
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; (scheme write)
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; (example grid)
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)
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(cond-expand
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(cyclone
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(import (scheme write))
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; ))
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; (cond-expand
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; (cyclone
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(import (example grid))
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))
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;(cond-expand
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; (cyclone
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(export life)
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;))
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(cond-expand
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(cyclone
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(begin
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(define (life-count grid i j)
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(define (count i j)
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(if (ref grid i j) 1 0))
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(+ (count (- i 1) (- j 1))
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(count (- i 1) j)
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(count (- i 1) (+ j 1))
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(count i (- j 1))
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(count i (+ j 1))
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(count (+ i 1) (- j 1))
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(count (+ i 1) j)
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(count (+ i 1) (+ j 1))))
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)
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(begin
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(define (life-alive? grid i j)
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(case (life-count grid i j)
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((3) #t)
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((2) (ref grid i j))
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(else #f)))
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)
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)
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)
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(begin
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(define (clear-vt100)
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(display
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(string
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(integer->char #x1B)
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#\[
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#\H
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(integer->char #x1B)
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#\[
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#\J)))
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(define (life-print grid)
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(clear-vt100)
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(each grid
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(lambda (i j v)
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(display (if v "*" " "))
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(if (= j (- (cols grid) 1))
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;(when (= j (- (cols grid) 1))
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(newline)))))
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(define (life grid iterations)
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(do ((i 0 (+ i 1))
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(grid0 grid grid1)
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(grid1 (make (rows grid) (cols grid))
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grid0))
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((= i iterations))
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(each grid0
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(lambda (j k v)
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(let ((a (life-alive? grid0 j k)))
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(put! grid1 j k a))))
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;(set! grid1 j k a))))
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(life-print grid1)))))
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