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;;
;; starlet/cue-list.scm
;;
;; Copyright © 2020-2022 Thomas White <taw@bitwiz.org.uk>
;;
;; This file is part of Starlet.
;;
;; Starlet is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;
(define-module (starlet cue-list)
#:use-module (oop goops)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#:use-module (ice-9 exceptions)
#:use-module (ice-9 atomic)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-43)
#:use-module (starlet fixture)
#:use-module (starlet state)
#:use-module (starlet clock)
#:use-module (starlet utils)
#:use-module (starlet attributes)
#:use-module (starlet cue-part)
#:use-module (starlet snap-transition)
#:use-module (starlet crossfade)
#:export (cue
cue-list
qnum
get-cue-number
get-cue-parts
get-cue-clock
get-preset-state
cue-number-to-index
cue-index-to-number
current-cue-clock
read-cue-list-file
num-cues)
#:re-export (snap crossfade))
(define-record-type <cue>
(make-cue number
preset-state
track-intensities
cue-parts
cue-clock)
cue?
(number get-cue-number)
(preset-state get-preset-state
set-preset-state!)
(track-intensities track-intensities?)
(cue-parts get-cue-parts)
(cue-clock get-cue-clock))
(define-method (num-cues (l <vector>))
(vector-length l))
(define (qnum a)
(/ (inexact->exact (* a 1000)) 1000))
(define (cue-index-to-number cue-list cue-index)
(get-cue-number (vector-ref cue-list cue-index)))
(define (cue-number-to-index cue-list cue-number)
(vector-index (lambda (a)
(eqv? (get-cue-number a)
cue-number))
cue-list))
(define (fix-attr-eq fa1 fa2)
(and (eq? (car fa1) (car fa2))
(eq? (cdr fa1) (cdr fa2))))
(define (fix-attrs-in-state state)
(state-map->list
(lambda (fix attr val) (cons fix attr))
state))
(define (add-fix-attrs-to-list state old-list)
(lset-union fix-attr-eq
old-list
(fix-attrs-in-state state)))
(define current-cue-clock (make-parameter #f))
(define-syntax cue
(syntax-rules (track-intensities)
((_ number track-intensities body ...)
(parameterize ((current-cue-clock (make-clock #:stopped #t)))
(make-cue (qnum number)
#f ;; preset state, to be filled later
#t ;; DO track intensities
(list body ...)
(current-cue-clock))))
((_ number body ...)
(parameterize ((current-cue-clock (make-clock #:stopped #t)))
(make-cue (qnum number)
#f ;; preset state, to be filled later
#f ;; don't track intensities
(list body ...)
(current-cue-clock))))))
(define (track-all-cues! the-cue-list)
(vector-fold
(lambda (idx prev-state the-cue)
(let ((the-tracked-state (lighting-state
(apply-state prev-state)
(unless (track-intensities? the-cue)
(blackout!))
(apply-state
(get-cue-part-state
(car (get-cue-parts the-cue)))))))
(set-cue-part-state! (car (get-cue-parts the-cue))
the-tracked-state)
(lighting-state
(apply-state the-tracked-state)
(for-each
(lambda (part)
(apply-state (get-cue-part-state part)))
(cdr (get-cue-parts the-cue))))))
(make-empty-state)
the-cue-list))
(define (dark? a)
(or (eq? a 'no-value)
(and (number? a)
(< a 1))))
(define (fixture-dark-in-cue? fix the-cue)
(every
(lambda (part)
(dark? (state-find fix intensity (get-cue-part-state part))))
(get-cue-parts the-cue)))
(define-syntax for-each-cue-part
(syntax-rules ()
((_ the-cue (part) body ...)
(for-each
(lambda (part)
body ...)
(get-cue-parts the-cue)))))
(define-syntax for-every-attr-in-cue
(syntax-rules ()
((_ the-cue (fix attr val) body ...)
(for-each-cue-part
the-cue (part)
(state-for-each
(lambda (fix attr val)
body ...)
(get-cue-part-state part))))))
(define (preset-all-cues! the-cue-list)
(let loop ((idx 0))
(let ((the-cue (vector-ref the-cue-list idx))
(next-cue (vector-ref the-cue-list (1+ idx)))
(preset-state (make-empty-state)))
(for-every-attr-in-cue
next-cue (fix attr val)
(unless (intensity? attr)
(when (fixture-dark-in-cue? fix the-cue)
(set-in-state! preset-state fix attr val))))
(set-preset-state! the-cue preset-state))
(if (< (+ 2 idx) (vector-length the-cue-list))
(loop (1+ idx))
(set-preset-state!
(vector-ref the-cue-list (1+ idx))
(make-empty-state)))))
(define-syntax cue-list
(syntax-rules ()
((_ body ...)
(let ((the-cue-list
(list->vector
(remove unspecified?
(list
(cue 0 (snap blackout))
body ...)))))
(track-all-cues! the-cue-list)
(preset-all-cues! the-cue-list)
the-cue-list))))
(define (read-cue-list-file filename)
(call-with-input-file
filename
(lambda (port)
(eval (read port) (interaction-environment)))))
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