301 lines
11 KiB
Scheme
301 lines
11 KiB
Scheme
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(require scheme/class)
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(require "sound.ss")
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(define default-grow-speed 4)
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(define grow-overshoot 10)
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(define (fract n)
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(- n (floor n)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define twig-view%
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(class object%
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(init-field
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(id 0)
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(pos (vector 0 0 0))
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(type 'none)
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(dir (vector 0 1 0))
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(radius 1)
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(num-points 0))
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(field
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(index 0)
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(parent-twig-id -1)
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(child-twig-ids '())
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(ornaments '())
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(col (vector 1 1 1))
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(tex "")
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(markers '())
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(shrink-t 0)
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(grow-t -1)
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(marker-destroy-t 0)
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(grow-speed default-grow-speed)
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(delme #f))
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(define/public (get-id) id)
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(define/public (delme?) delme)
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(define/public (get-dir) dir)
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(define/public (set-dir! s) (set! dir s))
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(define/public (set-col! s) (set! col s))
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(define/public (set-tex! s) (set! tex s))
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(define/public (get-pos) pos)
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(define/public (build) 0)
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(define/public (get-num-points) index)
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(define/public (get-grow-t) grow-t)
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(define/public (set-pos! s) (set! pos s))
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(define/public (get-child-twig-ids) child-twig-ids)
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(define/public (get-root) (error "need to overide this"))
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(define/public (destroy-twig) (destroy (get-root)))
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(define/public (set-parent-twig-id s) (set! parent-twig-id s))
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(define/public (get-point point-index) (error "need to overide this"))
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(define/public (get-width point-index) (error "need to overide this"))
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(define/public (add-child-twig-id twig-id)
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(set! child-twig-ids (cons twig-id child-twig-ids)))
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(define/public (growing?)
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(< grow-t (+ num-points grow-overshoot)))
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(define/public (start-growing)
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(set! grow-t 0)
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(set! markers (cons (build-locator) markers)))
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(define/public (start-shrinking)
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(set! shrink-t (if (growing?) grow-t (+ num-points grow-overshoot))))
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(define/pubment (add-point point width make-marker)
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(play-sound "snd/event01.wav" point (+ 0.1 (rndf)) 0.3)
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(when make-marker
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(set! markers (append markers (list (with-state
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(parent (get-root))
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(translate point)
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(scale 0.1)
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(shader "shaders/toon.vert.glsl" "shaders/toon.frag.glsl")
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(colour col)
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(build-sphere 8 8))))))
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(inner (void) add-point point width make-marker))
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(define/public (add-ornament point-index property)
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(when (< point-index grow-t)
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(play-sound "snd/nix.00203.wav" (get-point point-index) (+ 0.1 (rndf)) 0.3)
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(with-state
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(parent (get-root))
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(let ((ornament (property->ornament property
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(get-point point-index)
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(get-width point-index)
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(vnormalise (vsub (get-point point-index) (get-point (- point-index 1))))
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col)))
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; check above ground
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(let ((pos (with-primitive (get-root) (vtransform (vector 0 0 0) (get-global-transform)))))
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(if (not (and (send ornament above-ground-only?)
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(< (vy (vadd pos (get-point point-index))) 1)))
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; todo - delete existing ornaments here
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(set! ornaments (cons (list point-index ornament) ornaments))
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(send ornament destroy-ornament)))))))
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(define/pubment (set-excitations! a b)
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(for-each
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(lambda (ornament)
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(send (cadr ornament) set-excitations! a b))
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ornaments))
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(define/pubment (update t d)
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(for-each
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(lambda (ornament)
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(send (cadr ornament) update t d))
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ornaments)
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(when (> shrink-t 0)
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(set! shrink-t (- shrink-t (* d grow-speed))))
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(when (< shrink-t 0)
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(set! delme #t))
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(inner (void) update t d)
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(when (and (not (eq? grow-t -1)) (< grow-t (+ num-points grow-overshoot)))
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(set! grow-t (+ grow-t (* d grow-speed)))
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(when (and (not (null? markers)) (> 0 (- marker-destroy-t grow-t)))
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; soundtodo: marker gobble
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(set! marker-destroy-t (+ 1 marker-destroy-t))
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(destroy (car markers))
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(set! markers (cdr markers))))
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(when (> grow-t (+ num-points 10))
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(set! grow-t 999)))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define ribbon-twig-view%
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(class twig-view%
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(inherit-field pos radius num-points index col tex grow-t)
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(field
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(root 0)
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(widths '())
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(points '())
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(global-growth 0)
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(global-growth-time 10))
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(define/override (build)
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(set! root (let ((p (with-state
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(translate pos)
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(colour col)
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(hint-unlit)
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(texture (load-texture "textures/ribbon-twig.png"))
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(build-ribbon num-points))))
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(with-primitive p
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(pdata-map!
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(lambda (w)
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0)
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"w")
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(pdata-set! "w" 0 radius))
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p)))
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(define/override (get-root)
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root)
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#;(define/override (get-point point-index)
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(with-primitive root
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(pdata-ref "p" point-index)))
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#;(define/override (get-width point-index)
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(with-primitive root
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(pdata-ref "w" point-index)))
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(define/override (get-point point-index)
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(list-ref points point-index))
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(define/override (get-width point-index)
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(list-ref widths point-index))
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(define/augment (add-point point width make-marker)
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#;(with-primitive root
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(pdata-index-map! ; set all the remaining points to the end
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(lambda (i p) ; in order to hide them
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(if (< i index)
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p
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point))
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"p"))
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(set! widths (append widths (list width)))
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(set! points (append points (list point)))
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(set! index (+ index 1)))
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(define/augment (update t d)
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(when (and (> grow-t 0) (< grow-t (+ (length points) 10)))
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(with-primitive root
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(pdata-index-map!
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(lambda (i w)
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(* (/ global-growth global-growth-time)
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(cond ((< i (- grow-t 1))
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(list-ref widths i))
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((< i grow-t)
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(* (list-ref widths i) (fract grow-t)))
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(else
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0))))
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"w")
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(pdata-index-map!
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(lambda (i p)
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(cond ((< i (- grow-t 1))
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(list-ref points i))
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((equal? i (inexact->exact (floor (+ grow-t 1))))
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(vmix
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(list-ref points i)
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(list-ref points (- i 1)) (fract grow-t)))
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(else
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(list-ref points i))))
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"p")))
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(when (< global-growth global-growth-time)
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(set! global-growth (+ global-growth d))))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; bunches of ribbon twigs
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(define twiglets%
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(class object%
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(init-field
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(par 0))
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(field
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(twigs '()))
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(define/public (build pos dir width length)
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(set! twigs (list (build-tree pos dir width length))))
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(define (build-tree pos dir width length)
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(let ((t (make-object ribbon-twig-view% 0 pos 'ribbon
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dir
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(* width (+ 0.5 (rndf))) length)))
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(with-state
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(parent par)
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(send t build))
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(let ((m (mrotate (vmul (srndvec) 45)))
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(ppos (vector 0 0 0)))
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(for ((i (in-range 0 length)))
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(let ((dir (vtransform (send t get-dir) m))
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(width (if (eq? i (- length 1)) 0 (/ width (+ i 1)))))
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(send t set-dir! dir)
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(send t add-point ppos width #f)
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(set! ppos (vadd ppos (vmul dir (* 5 width)))))))
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(send t start-growing)
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t))
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(define/public (update t d)
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(for-each
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(lambda (twig)
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(send twig update t d)
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(when (and
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(< (length twigs) 50)
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(> (send twig get-num-points) 2)
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(zero? (random 20)))
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(let ((pi (inexact->exact (floor (send twig get-grow-t)))))
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(when (< pi (send twig get-num-points))
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(set! twigs (cons
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(build-tree
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(vadd (send twig get-pos) (send twig get-point pi))
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(send twig get-dir)
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(/ (send twig get-width pi) 1.4)
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(/ (send twig get-num-points) 2))
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twigs))))))
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twigs))
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(super-new)))
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(clear)
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(clear-colour 0.5)
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(define l (with-state
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(build-locator)))
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(define r '())
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(let ((t (make-object twiglets% l)))
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(send t build (vector 0 0 0) (vector 0 1 0) 2 20)
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(set! r (cons t r)))
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(every-frame
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(begin
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(when (key-pressed " ")
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(let ((t (make-object twiglets% l)))
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(send t build (vector 0 0 0) (vector 0 1 0) 2 20)
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(set! r (cons t r))))
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(for-each
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(lambda (t)
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(send t update (time) 0.02))
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r)))
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;(start-framedump "ribbon-test-" "jpg")
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