802 lines
27 KiB
Scheme
802 lines
27 KiB
Scheme
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; hex ornament/groworld game : fluxus version
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(require scheme/class)
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; tweakables
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(define num-insects 20)
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(define pickup-drop-probability 10)
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(define (vec3->vec4 v a)
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(vector (vx v) (vy v) (vz v) a))
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(define (bg-colour) (vector 0.5 0.2 0.1))
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(define (worm-colour) (hsv->rgb (vector 0.1 (rndf) 0.5)))
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(define (root-colour) (vector 0.6 0.5 0.5))
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(define (pickup-colour) (hsv->rgb (vector 0.1 (rndf) 1)))
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(define (absorb-colour) (vec3->vec4 (hsv->rgb (vector 0.1 (rndf) 1)) 0.2))
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;(define texpath "")
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(define texpath "textures/")
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; odds and sods
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; return a version of list l with v inserted at the nth
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; position and with c as a counter
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(define (insert l n v c)
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(cond
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((null? l) l)
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((eq? c n) (cons v (insert (cdr l) n v (+ c 1))))
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(else (cons (car l) (insert (cdr l) n v (+ c 1))))))
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(define (list-remove l i)
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(if (zero? i)
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(cdr l)
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(cons (car l) (list-remove (cdr l) (- i 1)))))
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(define (shuffle l)
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(if (null? l)
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'()
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(let ((i (random (length l))))
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(cons (list-ref l i)
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(shuffle (list-remove l i))))))
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(define (choose l)
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(list-ref l (random (length l))))
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; convert a list of bools into a number, treating the
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; list as a binary sequence
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(define (bool-list->num l n c)
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(cond
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((null? l) n)
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((car l) (bitwise-ior (arithmetic-shift 1 c)
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(bool-list->num (cdr l) n (+ c 1))))
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(else (bool-list->num (cdr l) n (+ c 1)))))
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; how to find your way around a hexagon
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; .
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; 5 (NW) / \ 0 (NE)
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; / \
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; 4 (W)| | 1 (E)
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; | |
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; \ /
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; 3 (SW) \ / 2 (SE)
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; `
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(define NE 0)
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(define E 1)
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(define SE 2)
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(define SW 3)
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(define W 4)
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(define NW 5)
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(define directions (list NE E SE SW W NW))
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(define (rdirection d)
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(cond
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((eq? d NE) SW)
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((eq? d E) W)
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((eq? d SE) NW)
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((eq? d SW) NE)
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((eq? d W) E)
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((eq? d NW) SE)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; logic
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; messages passed between the logic and the view
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(define-struct cell-update (pos code pickup upstream))
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(define-struct insect-update (id pos dir t))
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(define-struct absorb-event (cell-pos type))
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(define comb-cell%
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(class object%
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(field
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(pos '())
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(neighbours '(#f #f #f #f #f #f))
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(pickup #f)
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(connections '(#f #f #f #f #f #f))
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(visible #f)
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(update-me #f)
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(upstream #f)) ; the cell we are connected to (if we are)
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(define/public (update-me?)
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(let ((r update-me))
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(set! update-me #f)
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r))
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(define/public (get-upstream)
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upstream)
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(define/public (set-visible! s)
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(set! update-me #t)
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(set! visible s))
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(define/public (visible?)
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visible)
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(define/public (get-pos)
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pos)
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(define/public (set-pos! s)
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(set! pos s))
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(define/public (get-neighbours)
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neighbours)
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(define/public (get-neighbour d)
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(list-ref neighbours d))
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(define/public (set-neighbour! d n)
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(set! neighbours (insert neighbours d n 0)))
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(define/public (get-pickup)
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pickup)
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(define/public (set-pickup! s)
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(when visible (set! update-me #t))
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(set! pickup s))
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(define/public (get-connections)
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connections)
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(define/public (no-connections?)
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(equal? connections (list #f #f #f #f #f #f)))
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(define/public (set-connection! d n)
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(set! update-me #t)
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(set! visible #t)
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(set! connections (insert connections d n 0))
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; tell all our neighbours to become visible
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(for-each
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(lambda (n)
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(when n (send n set-visible! #t)))
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neighbours))
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(define/public (get-connection d)
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(list-ref connections d))
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(define/public (get-connection-num)
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(bool-list->num connections 0 0))
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; returns the first attachable neighbour found, and sets it's connection
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(define (search/attach-to-neighbour l dirs)
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(cond
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((null? l) dirs)
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((not (send (get-neighbour (car l)) no-connections?))
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(send (get-neighbour (car l)) set-connection! (rdirection (car l)) #t)
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(set! upstream (get-neighbour (car l)))
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#;(search/attach-to-neighbour (cdr l) (cons (car l) dirs))
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(car l))
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(else (search/attach-to-neighbour (cdr l) dirs))))
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(define/public (grow)
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; only possible to grow when we are a clear cell
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(when (equal? connections (list #f #f #f #f #f #f))
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(let ((dir (search/attach-to-neighbour (shuffle directions) '())))
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(when dir
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(set-connection! dir #t))
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#;(for-each
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(lambda (d)
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(set-connection! d #t))
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dir))))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define insect%
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(class object%
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(init-field
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(id 0)
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(cell 0)
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(t (+ 0.5 (rndf))))
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(field
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(next-update 0))
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(define/public (get-id)
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id)
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(define/public (get-cell)
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cell)
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(define (move cell)
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(let* ((i (random (length (send cell get-neighbours))))
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(n (list-ref (send cell get-neighbours) i)))
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(if n (list i n) (move cell))))
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(define/public (update time delta)
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(cond ((> time next-update)
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(let ((m (move cell)))
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(when (zero? (random pickup-drop-probability))
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(send cell set-pickup! 'default))
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(set! next-update (+ time t))
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(set! cell (cadr m))
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(make-insect-update id (send cell get-pos) (car m) t)))
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(else #f)))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define honey-comb%
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(class object%
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(field
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(cells '())
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(width 0)
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(height 0)
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(insects '()))
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(define/public (get-cell x y)
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(list-ref cells (+ (* y height) x)))
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(define/public (init w h)
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(set! width w)
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(set! height h)
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; first build the cells
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(set! cells (build-list (* w h) (lambda (_) (make-object comb-cell%))))
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; now build the insects
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(set! insects (build-list num-insects (lambda (id) (make-object insect% id (choose cells)))))
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; then stitch them together like this:
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; o o o o o o o o o o o
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; o o o o o o o o o o o
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; o o o o o o o o o o o
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; o o o o o o o o o o o
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(for ((x (in-range 0 width)))
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(for ((y (in-range 0 height)))
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(let ((cell (get-cell x y)))
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(send cell set-pos! (list x y))
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(when (and (< x (- width 1)) (> y 0))
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(send cell set-neighbour! NE (get-cell (if (odd? y) (+ x 1) x) (- y 1))))
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(when (< x (- width 1))
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(send cell set-neighbour! E (get-cell (+ x 1) y)))
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(when (and (< x (- width 1)) (< y (- height 1)))
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(send cell set-neighbour! SE (get-cell (if (odd? y) (+ x 1) x) (+ y 1))))
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(when (and (> x 0) (> y 0))
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(send cell set-neighbour! NW (get-cell (if (odd? y) x (- x 1)) (- y 1))))
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(when (> x 0)
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(send cell set-neighbour! W (get-cell (- x 1) y)))
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(when (and (> x 0) (< y (- height 1)))
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(send cell set-neighbour! SW (get-cell (if (odd? y) x (- x 1)) (+ y 1))))))))
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(define/public (seed x y)
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(send (get-cell x y) set-connection! SE #t)
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(send (get-cell x (+ y 1)) set-connection! NW #t))
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(define/public (get-update-list time delta)
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(append
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; look for pickups over roots
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(foldl
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(lambda (cell r)
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(let ((pickup (send cell get-pickup)))
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(cond ((and (not (send cell no-connections?)) pickup)
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(send cell set-pickup! #f)
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(cons (make-absorb-event (send cell get-pos) pickup) r))
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(else r))))
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'()
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cells)
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(foldl
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(lambda (insect r)
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(let ((l (send insect update time delta)))
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(if l (cons l r) r)))
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'()
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insects)
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(foldl
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(lambda (cell r)
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(if (send cell update-me?)
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(let ((upstream (send cell get-upstream)))
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(cons (make-cell-update (send cell get-pos)
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(send cell get-connection-num)
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(send cell get-pickup)
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(if upstream (send upstream get-pos) #f)) r))
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r))
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'()
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cells)))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; graphics and interaction
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; more odds and sods...
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(define (direction-normal d)
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(let ((a (* 2 1.141 60)))
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(vector (sin (* a d)) (cos (* a d)) 0)))
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(define (build-ngon n)
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(let ((p (build-polygons n 'polygon)))
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(with-primitive p
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(pdata-index-map!
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(lambda (i p)
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(let ((a (* (/ i n) (* 2 3.141))))
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(vector (cos a) (sin a) 0)))
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"p")
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(pdata-map!
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(lambda (t p)
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(let ((p (vtransform p (mmul
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(mrotate (vector 0 0 -90))
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(mscale (vector -1 1 1))))))
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(vsub (vmul p 0.45) (vector 0.5 0.5 0))))
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"t" "p")
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(pdata-copy "t" "tref")
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(pdata-map! (lambda (n) (vector 0 0 1)) "n"))
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p))
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(define (build-ngon n)
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(let ((p (build-polygons n 'polygon)))
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(with-primitive p
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(pdata-index-map!
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(lambda (i p)
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(let ((a (* (/ i n) (* 2 3.141))))
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(vector (cos a) (sin a) 0)))
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"p")
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(pdata-map!
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(lambda (t p)
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(let ((p (vtransform p (mmul
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(mrotate (vector 0 0 -90))
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(mscale (vector -1 1 1))))))
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(vsub (vmul p 0.45) (vector 0.5 0.5 0))))
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"t" "p")
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(pdata-copy "t" "tref")
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(pdata-map! (lambda (n) (vector 0 0 1)) "n"))
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p))
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; slow implementation of hermite curves for animation
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(define (hermite s p1 p2 t1 t2)
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; the bernstein polynomials
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(define (h1 s)
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(+ (- (* 2 (expt s 3))
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(* 3 (expt s 2))) 1))
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(define (h2 s)
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(+ (* -2 (expt s 3))
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(* 3 (expt s 2))))
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(define (h3 s)
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(+ (- (expt s 3) (* 2 (expt s 2))) s))
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(define (h4 s)
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(- (expt s 3) (expt s 2)))
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(vadd
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(vadd
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(vmul p1 (h1 s))
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(vmul p2 (h2 s)))
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(vadd
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(vmul t1 (h3 s))
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(vmul t2 (h4 s)))))
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; slow, stupid version for getting the tangent - not in the mood for
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; maths today to see how you derive it directly, must be pretty simple
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(define (hermite-tangent t p1 p2 t1 t2)
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(let ((p (hermite t p1 p2 t1 t2)))
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(list p (vsub (hermite (- t 0.01) p1 p2 t1 t2) p))))
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(define (lerp t p1 p2)
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(vadd (vmul p1 (- 1 t)) (vmul p2 t)))
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(define (lerp-tangent t p1 p2)
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(let ((p (lerp t p1 p2)))
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(list p (vsub (lerp (- t 0.01) p1 p2) p))))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define cell-view%
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(class object%
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(field
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(root 0)
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(root2 0)
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(pickup-root 0)
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(t 0)
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(pos '(0 0))
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(owner 0)
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(upstream-pos '()))
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(define/public (get-upstream-pos)
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upstream-pos)
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(define/public (set-upstream-pos! s)
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(set! upstream-pos s))
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(define/public (set-owner! s)
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(set! owner s))
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(define/public (get-root)
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root)
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(define/public (get-pos)
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pos)
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(define/public (set-pos! s)
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(set! pos s))
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(define (build-prim code)
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(let ((p (with-state
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;(hint-wire)
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(parent owner)
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(hint-depth-sort)
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(opacity 0)
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(colour (root-colour))
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(hint-unlit)
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(when (odd? (cadr pos))
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(translate (vector 0.5 0 0)))
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(translate (vector (car pos) (* 0.85 (cadr pos)) (* 0.001 (rndf))))
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(scale 0.57)
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(rotate (vector 0 0 90))
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(build-ngon 6))))
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(with-primitive p
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(update-texture code))
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p))
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(define/public (build code)
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(set! root (build-prim code))
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(set! root2 (build-prim code)))
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(define (update-texture code)
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(texture (load-texture (string-append texpath "roots-ornate.png")))
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(pdata-map!
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(lambda (t tref)
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(let ((size (/ 1 8)))
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(vadd (vmul tref size) (vector (* 1 size (+ 1 (modulo code 8)))
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(* size 1 (+ 1 (quotient code 8))) 0))))
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"t" "tref"))
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(define/public (new-code code)
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(when (not (zero? root2))
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(destroy root2)
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(with-primitive root (opacity 1)))
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(set! root2 (build-prim code))
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(set! t 0))
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(define/public (set-pickup! type)
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(when (and (not type) (not (zero? pickup-root)))
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(destroy pickup-root)
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(set! pickup-root 0))
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(when type
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(when (not (zero? pickup-root))
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(destroy pickup-root)
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(set! pickup-root 0))
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(set! pickup-root (with-state
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(colour (pickup-colour))
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(parent owner)
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(translate (with-primitive root (vtransform (vector 0 0 0) (get-transform))))
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(build-torus 0.03 0.2 10 10)))))
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(define/public (update time delta)
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(set! t (+ t delta))
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(when (not (zero? pickup-root))
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(with-primitive pickup-root
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(rotate (vector 0 2 0))))
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(when (< t 1)
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(with-primitive root
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(opacity (- 1 t)))
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(with-primitive root2
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(opacity t)))
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(when (> t 1)
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(with-primitive root
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(opacity 1))
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(when (not (zero? root2))
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(destroy root)
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(set! root root2)
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(set! root2 0))))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define insect-view%
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(class object%
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(field
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(root 0)
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(from (vector 0 0 0))
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(to (vector 0 0 0))
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(from-dir (vector 1 0 0))
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(to-dir (vector 1 0 0))
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(t 0)
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(d 0))
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(define/public (build)
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(set! root (build-cube))
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(with-primitive root (hide 1)))
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(define/public (goto-cell cell dir dur)
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(set! from to)
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(set! from-dir to-dir)
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(set! to (with-primitive (send cell get-root)
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(vtransform (vector 0 0 0) (get-transform))))
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(set! to-dir (direction-normal dir))
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(set! t 0)
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(set! d dur))
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(define/public (update time delta)
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(cond ((or (zero? d) (> t d) (equal? from (vector 0 0 0)))
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(with-primitive root (hide 1))
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(set! from (vector 0 0 0)))
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(else
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(with-primitive root
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(hide 0)
|
|
(identity)
|
|
|
|
(let ((h (hermite-tangent (/ t d) from to (vmul from-dir 2) (vmul to-dir 2))
|
|
#;(lerp-tangent (/ t d) from to)))
|
|
|
|
(translate (car h))
|
|
(concat (maim (vector 0 0 1) (vnormalise (cadr h)))))
|
|
|
|
(scale 0.2))))
|
|
(set! t (+ t delta)))
|
|
|
|
(super-new)))
|
|
|
|
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(define worm-view%
|
|
(class insect-view%
|
|
(inherit-field root from to from-dir to-dir t d)
|
|
|
|
(field (hidden #t))
|
|
|
|
(define/override (build)
|
|
(set! root (build-ribbon 50))
|
|
(with-primitive root
|
|
(hide 1)
|
|
(translate (vector 0 0 -0.1))
|
|
(hint-unlit)
|
|
(set! hidden #t)
|
|
(colour (worm-colour))
|
|
(texture (load-texture (string-append texpath "worm.png")))
|
|
(let ((width (+ 0.05 (* 0.1 (rndf)))))
|
|
(pdata-index-map!
|
|
(lambda (i w)
|
|
width #;(+ 0.05 (* (abs (sin (* i 0.5))) 0.1)))
|
|
"w"))
|
|
#;(pdata-map!
|
|
(lambda (c)
|
|
(vector 1 1 1))
|
|
"c")))
|
|
|
|
(define/override (update time delta)
|
|
(cond ((or (zero? d) (> t d) (equal? from (vector 0 0 0)))
|
|
(set! hidden #t)
|
|
(with-primitive root (hide 1)))
|
|
(else
|
|
(with-primitive root
|
|
(when hidden
|
|
(set! hidden #f)
|
|
(pdata-map!
|
|
(lambda (p)
|
|
from)
|
|
"p"))
|
|
(hide 0)
|
|
;(identity)
|
|
(let ((h (hermite-tangent (/ t d) from to (vmul from-dir 2) (vmul to-dir 2))))
|
|
;(translate (car h))
|
|
(pdata-set! "p" (- (pdata-size) 1) (car h))
|
|
|
|
|
|
(for ((i (in-range 0 (- (pdata-size) 1))))
|
|
(pdata-set! "p" i (pdata-ref "p" (+ i 1))))))))
|
|
(set! t (+ t delta)))
|
|
|
|
(super-new)))
|
|
|
|
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(define absorb-view%
|
|
(class object%
|
|
(field
|
|
(cell #f)
|
|
(root 0)
|
|
(next-time 0)
|
|
(target (vector 0 0 0))
|
|
(speed 0.5)
|
|
(alive #t)
|
|
(t 0))
|
|
|
|
(define/public (set-cell! s)
|
|
(set! cell s))
|
|
|
|
(define/public (alive?)
|
|
alive)
|
|
|
|
(define/public (build p)
|
|
(set! root (with-state
|
|
(texture (load-texture (string-append texpath "particle.png")))
|
|
(parent p)
|
|
(build-particles 20)))
|
|
|
|
(let ((pos (with-primitive (send cell get-root)
|
|
(vtransform (vector 0 0 0) (get-transform)))))
|
|
(with-primitive root
|
|
(translate (vector 0 0 0.2))
|
|
(hint-depth-sort)
|
|
(pdata-map!
|
|
(lambda (p)
|
|
(vadd pos (vmul (srndvec) 0.3)))
|
|
"p")
|
|
(pdata-map!
|
|
(lambda (c)
|
|
(absorb-colour))
|
|
"c")
|
|
(pdata-map!
|
|
(lambda (s)
|
|
(let ((s (* 0.2 (+ 0.1 (rndf)))))
|
|
(vector s s 1)))
|
|
"s"))))
|
|
|
|
|
|
(define/public (update time delta hcv)
|
|
(set! t (+ t delta))
|
|
|
|
(with-primitive root
|
|
(pdata-map!
|
|
(lambda (p)
|
|
(vadd p (vadd (vmul (vsub target p) 0.05) (vmul (srndvec) 0.06))))
|
|
"p"))
|
|
|
|
(when (> time next-time)
|
|
(set! next-time (+ time speed))
|
|
(let ((upstream-pos (send cell get-upstream-pos)))
|
|
(cond (upstream-pos
|
|
(set! cell (send hcv get-cell-from-pos (send cell get-upstream-pos)))
|
|
(set! target (with-primitive (send cell get-root)
|
|
(vtransform (vector 0 0 0) (get-transform)))))
|
|
|
|
(else
|
|
(set! alive #f)
|
|
(destroy root))))))
|
|
|
|
(super-new)))
|
|
|
|
|
|
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(define honey-comb-view%
|
|
(class object%
|
|
(field
|
|
(root 0)
|
|
(cells '()) ; an associative list mapping position to cell-views
|
|
(insects '()) ; an associative list mapping id to insect-views
|
|
(absorb-list '())) ; just a list of absorb effects
|
|
|
|
(define/public (init)
|
|
(set! root (build-locator))
|
|
(set! insects (build-list num-insects
|
|
(lambda (id)
|
|
(list id (make-object worm-view%)))))
|
|
(with-state
|
|
(parent root)
|
|
(for-each
|
|
(lambda (insect)
|
|
(send (cadr insect) build))
|
|
insects)))
|
|
|
|
(define (get-pos-from-prim p l)
|
|
(cond
|
|
((null? l) #f)
|
|
((eq? (send (cadr (car l)) get-root) p) (caar l))
|
|
(else (get-pos-from-prim p (cdr l)))))
|
|
|
|
(define/public (get-cell-from-pos pos)
|
|
(cadr (assoc pos cells)))
|
|
|
|
(define/public (deal-with-input)
|
|
(if (mouse-button 1)
|
|
(get-pos-from-prim (mouse-over) cells)
|
|
#f))
|
|
|
|
(define/public (add-absorb! s)
|
|
(set! absorb-list (cons s absorb-list)))
|
|
|
|
(define/public (update update-list time delta)
|
|
|
|
; do the per-frame update on all the things
|
|
(set! absorb-list
|
|
(filter
|
|
(lambda (absorb)
|
|
(send absorb update time delta this)
|
|
(send absorb alive?))
|
|
absorb-list))
|
|
|
|
(for-each
|
|
(lambda (cell)
|
|
(send (cadr cell) update time delta))
|
|
cells)
|
|
(for-each
|
|
(lambda (insect)
|
|
(send (cadr insect) update time delta))
|
|
insects)
|
|
|
|
; read the update list, and dispatch based on type
|
|
(for-each
|
|
(lambda (item)
|
|
(cond
|
|
((cell-update? item)
|
|
(let*
|
|
((pos (cell-update-pos item))
|
|
(code (cell-update-code item))
|
|
(s (assoc pos cells)))
|
|
|
|
(cond
|
|
(s
|
|
(send (cadr s) new-code code)
|
|
(send (cadr s) set-pickup! (cell-update-pickup item))
|
|
(send (cadr s) set-upstream-pos! (cell-update-upstream item)))
|
|
(else
|
|
(let ((cell (make-object cell-view%)))
|
|
(send cell set-pos! pos)
|
|
(send cell set-owner! root)
|
|
(send cell build code)
|
|
(set! cells (cons (list pos cell) cells)))))))
|
|
((insect-update? item)
|
|
(let* ((pos (insect-update-pos item))
|
|
(c (assoc pos cells))
|
|
(insect (cadr (assoc (insect-update-id item) insects))))
|
|
; only need to update if we can see the cell
|
|
(when c (send insect goto-cell
|
|
(cadr c)
|
|
(insect-update-dir item)
|
|
(insect-update-t item)))))
|
|
((absorb-event? item)
|
|
(let ((a (make-object absorb-view%)))
|
|
(send a set-cell! (get-cell-from-pos (absorb-event-cell-pos item)))
|
|
(send a build root)
|
|
(add-absorb! a)))))
|
|
update-list))
|
|
|
|
(super-new)))
|
|
|
|
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(clear)
|
|
(clear-colour (bg-colour))
|
|
(clear-texture-cache)
|
|
(show-axis 0)
|
|
(set-camera-transform (mtranslate (vector -10 -6 -8)))
|
|
|
|
(define hc (make-object honey-comb%))
|
|
(define hcv (make-object honey-comb-view%))
|
|
|
|
(send hc init 20 20)
|
|
|
|
(with-state
|
|
; (translate (vector -50 -42.5 0))
|
|
; (translate (vector -10 -8.5 0))
|
|
(send hcv init))
|
|
|
|
(send hc seed 10 10)
|
|
;(send (send hc get-cell 50 52) grow)
|
|
;(send (send hc get-cell 49 53) grow)
|
|
|
|
(define t 0)
|
|
(define d 0.04)
|
|
|
|
(define (animate)
|
|
; (set! d (delta))
|
|
(set! t (+ t d))
|
|
(let ((clicked (send hcv deal-with-input)))
|
|
(when clicked
|
|
(send (send hc get-cell (car clicked) (cadr clicked)) grow)))
|
|
(send hcv update (send hc get-update-list t d) t d))
|
|
|
|
(every-frame (animate))
|