6ceaa37ab6
Implements ascii_fx_zone effect that allows applying arbitrary sexp effects to each character cell via cell_effect lambdas. Each cell is rendered as a small image that effects can operate on. Key changes: - New ascii_fx_zone effect with cell_effect parameter for per-cell transforms - Zone context (row, col, lum, sat, hue, etc.) available in cell_effect lambdas - Effects are now loaded explicitly from recipe declarations, not auto-loaded - Added effects_registry to plan for explicit effect dependency tracking - Updated effect definition syntax across all sexp effects - New run_staged.py for executing staged recipes - Example recipes demonstrating alternating rotation and blur/rgb_split patterns Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
19 lines
655 B
Common Lisp
19 lines
655 B
Common Lisp
;; Echo effect - motion trails using frame buffer
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(define-effect echo
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:params (
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(num_echoes :type int :default 4 :range [1 20])
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(decay :type float :default 0.5 :range [0 1])
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)
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(let* ((buffer (state-get 'buffer (list)))
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(new-buffer (take (cons frame buffer) (+ num_echoes 1))))
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(begin
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(state-set 'buffer new-buffer)
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;; Blend frames with decay
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(if (< (length new-buffer) 2)
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frame
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(let ((result (copy frame)))
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;; Simple blend of first two frames for now
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;; Full version would fold over all frames
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(blend-images frame (nth new-buffer 1) (* decay 0.5)))))))
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