17 lines
492 B
Common Lisp
17 lines
492 B
Common Lisp
;; Strobe effect - holds frames for choppy look
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(require-primitives "core")
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(define-effect strobe
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:params (
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(frame_rate :type int :default 12 :range [1 60])
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)
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(let* ((held (state-get 'held nil))
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(held-until (state-get 'held-until 0))
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(frame-duration (/ 1 frame_rate)))
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(if (or (core:is-nil held) (>= t held-until))
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(begin
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(state-set 'held (copy frame))
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(state-set 'held-until (+ t frame-duration))
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frame)
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held)))
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