500 lines
17 KiB
Scheme
500 lines
17 KiB
Scheme
#lang scheme
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(require scheme/class fluxus-016/fluxus "message.ss" "list-utils.ss")
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(provide (all-defined-out))
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(define branch-probability 6) ; as in one in branch-probability chance
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(define branch-width-reduction 0.5)
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(define twig-jitter 0.1)
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(define branch-jitter 0.5)
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(define max-twig-points 30)
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(define start-twig-dist 0.05)
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(define start-twig-width 0.2)
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(define default-max-twigs 10)
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(define default-scale-factor 1.05)
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(define num-pickups 10)
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(define pickup-dist-radius 200)
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(define pickup-size 1)
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(define ornament-grow-probability 4)
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(define curl-amount 40)
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(define start-size 50)
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; the base class logic object - all logic side objects can
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; send messages to the render side at any time by calling add-message
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; this takes care of the propagation of information. (not just oo fetish, I hope)
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(define game-logic-object%
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(class object%
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(field
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(messages '())
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(children '()))
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(define/public (send-message name data)
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(set! messages (cons (make-object message% name data) messages)))
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; convert a list of lists in to just a single list - needed to convert
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; the update lists into one big list of messages
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(define (flatten l)
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(cond
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((null? l) '())
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((list? (car l)) (append (flatten (car l)) (flatten (cdr l))))
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(else (cons (car l) (flatten (cdr l))))))
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(define/pubment (update) ; need to augement this if we have child logic objects,
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(let ((m messages)) ; and call update on them too.
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(set! messages '())
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(append
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m
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(flatten (inner '() update))))) ; the augmented method gets called here
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; a twig, which can contain other twigs things.
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; (roots and shoots are both twigs)
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(define twig-logic%
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(class game-logic-object%
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(init-field
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(last-point (vector 0 0 0))
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(id #f) ; our id (for matching up with the renderer geometry)
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(plant #f) ; the plant we belong to
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(type 'root) ; or 'shoot
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(dir (vector 0 1 0)) ; the general direction we are pointing in
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(width 0) ; the width of this root
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(num-points max-twig-points) ; number of points in this twig
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(render-type 'extruded) ; the way to tell the view to render this twig
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(dist start-twig-dist)) ; distance between points
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(field
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(points '()) ; the 3d points for this twig
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(widths '())
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(twigs '()) ; children are stored with the point number they are connected to.
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(ornaments '()) ; the things attached to this twig, an assoc list with point index
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(branch #f) ; are we a main branch twig?
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(w 0) ; the width of this segment
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(curl (vmul (crndvec) curl-amount))) ; the angles to turn each point, if curly
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(inherit send-message)
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(define/public (set-pos s)
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(set! last-point s))
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(define/public (get-id)
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id)
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(define/public (set-id! s)
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(set! id s))
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(define/public (get-type)
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type)
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(define/public (get-dir)
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dir)
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(define/public (get-width)
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width)
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(define/public (get-num-points)
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num-points)
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(define/public (get-render-type)
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render-type)
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(define/public (set-branch! s)
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(set! branch s))
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(define/public (get-point point-index)
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(list-ref points point-index))
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(define/public (get-length)
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(length points))
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(define/public (get-end-pos)
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(if (not (null? points))
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(list-ref points (- (get-length) 1))
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#f))
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(define/public (scale a)
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(set! width (* width a))
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(set! dist (* dist a)))
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(define/public (grow ndir)
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(when (< (length points) num-points)
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(let ((new-point (if (zero? (length points))
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; first point should be at edge of the seed if we are a branch
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(if branch (vadd last-point (vmul dir dist))
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last-point)
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(vadd last-point (vmul dir dist)))))
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(set! dir ndir)
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(set! w (* width (- 1 (/ (length points) num-points))))
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(set! last-point new-point)
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(set! points (append points (list new-point)))
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(set! widths (append widths (list w)))
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(send-message 'twig-grow (list
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(list 'plant-id (send plant get-id))
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(list 'twig-id id)
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(list 'point new-point)
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(list 'width w)))
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#;(when (and (> (length points) 1) (> num-points 1)
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(zero? (random branch-probability)))
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(add-twig (- (length points) 1) (vadd dir (vmul (srndvec) branch-jitter))))))
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(for-each
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(lambda (twig)
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(send (cadr twig) grow ndir))
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twigs))
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(define/public (add-twig point-index dir)
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(let ((twig (make-object twig-logic%
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(get-point point-index)
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(send plant get-next-twig-id)
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plant
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type
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dir
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(list-ref widths point-index)
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(quotient num-points 2)
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render-type
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dist)))
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(send-message 'new-twig (list
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(list 'plant-id (send plant get-id))
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(list 'parent-twig-id id)
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(list 'point-index point-index)
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(list 'twig-id (send twig get-id))
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(list 'type (send twig get-type))
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(list 'dir (send twig get-dir))
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(list 'width (send twig get-width))
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(list 'num-points (send twig get-num-points))
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(list 'render-type (send twig get-render-type))
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))
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(set! twigs (cons (list point-index twig) twigs))
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twig))
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(define/public (get-twig point-index)
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(cadr (assq point-index twigs)))
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(define/public (get-random-twig)
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(if (or (null? twigs) (zero? (random 10)))
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this
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(send (cadr (choose twigs)) get-random-twig)))
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(define/public (add-ornament point-index ornament)
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; todo - check max ornaments
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(send-message 'new-ornament
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(list
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(list 'plant-id (send plant get-id))
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(list 'twig-id id)
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(list 'point-index point-index)
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(list 'property (send ornament get-property))))
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(set! ornaments (cons (list point-index ornament) ornaments)))
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(define/public (get-ornament point-index)
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(cadr (assq point-index ornaments)))
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; adds the ornament if it's close, and checks sub-twigs
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; returns true if it's succeded
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(define/public (check-pickup pickup)
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; check each point in our twig
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(let* ((i -1) (found (foldl
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(lambda (point found)
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(set! i (+ i 1))
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; if we havent found anything yet and it's intersecting
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(cond ((and (not found) (< (vdist point (send pickup get-pos))
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(+ width (send pickup get-size))))
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(send plant add-property (send pickup get-type))
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(send pickup pick-up) ; this will remove the pickup for us
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(send-message 'pick-up-pickup
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(list
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(list 'pickup-id (send pickup get-id))))
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#t)
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(else #f)))
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#f
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points)))
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; now check each sub-twig
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(if (not found)
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(foldl
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(lambda (twig found)
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(if (not found)
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(send (cadr twig) check-pickup pickup)
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#f))
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#f
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twigs)
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found)))
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(define/augment (update)
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(append
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(map
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(lambda (ornament)
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(send (cadr ornament) update))
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ornaments)
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(map
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(lambda (twig)
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(send (cadr twig) update))
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twigs)))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; abilities live on twigs, and can do things.
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; this is the base class for all abilities.
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(define ornament-logic%
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(class game-logic-object%
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(init-field
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(id -1)
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(property 'none)
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(plant #f) ; the plant we belong to
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(twig #f) ; the twig we are on
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(point-index -1)) ; the index to the point on our twig
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(field
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(pos (send twig get-point point-index))) ; figure out the position here
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(define/public (get-property)
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property)
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(define/public (get-pos)
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pos)
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; pickups map to abilities, and live out in space
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; this is the base class for all pickups.
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(define pickup-logic%
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(class game-logic-object%
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(init-field
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(id -1)
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(type 'none)
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(pos (vector 0 0 0)))
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(field
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(size pickup-size)
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(picked-up #f))
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(define/public (picked-up?)
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picked-up)
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(define/public (pick-up)
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(set! picked-up #t))
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(define/public (get-id)
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id)
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(define/public (get-type)
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type)
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(define/public (get-pos)
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pos)
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(define/public (get-size)
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size)
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define plant-logic%
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(class game-logic-object%
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(init-field
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(id #f)
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(pos (vector 0 0 0)))
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(field
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(twigs '()) ; a assoc list map of ages to twigs
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(properties '()) ; a list of symbols - properties come from pickups
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(ornaments '()) ; map of ids to ornaments on the plant
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(size start-size) ; the age of this plant
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(max-twigs default-max-twigs) ; the maximum twigs allowed at any time - oldest removed first
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(next-twig-id 0)
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(next-ornament-id 0)
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(grow-amount default-scale-factor))
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(inherit send-message)
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(define/public (get-id)
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id)
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(define/public (get-pos)
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pos)
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(define/public (get-size)
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size)
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(define/public (grow dir)
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(for-each
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(lambda (twig)
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(send twig grow dir))
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twigs))
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(define/public (add-property name)
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(set! properties (cons name properties)))
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; we need to maintain our list of twig ids here, for this plant
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(define/public (get-next-twig-id)
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(let ((id next-twig-id))
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(set! next-twig-id (+ next-twig-id 1))
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next-twig-id))
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; we need to maintain our list of ornament ids here, for this plant
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(define/public (get-next-ornament-id)
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(let ((id next-ornament-id))
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(set! next-ornament-id (+ next-ornament-id 1))
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next-ornament-id))
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(define/public (check-pickup pickup)
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(foldl
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(lambda (twig found)
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(if (not found)
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(send twig check-pickup pickup)
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#f))
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#f
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twigs))
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(define/public (destroy-twig twig)
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(send-message 'destroy-branch-twig (list
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(list 'plant-id id)
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(list 'twig-id (send twig get-id))
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)))
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; a util to keep a fixed size list of twigs, calling destroy twig when needed.
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(define (cons-twig thing in count out)
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(cond
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((null? in)
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(cons thing out))
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((zero? count)
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(destroy-twig (car in))
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(cons thing out))
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(else (cons-twig thing (cdr in) (- count 1) (append out (list (car in)))))))
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(define/public (add-twig twig)
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(send twig set-id! (get-next-twig-id))
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(set! size (* size grow-amount))
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(send twig scale size)
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(send twig set-branch! #t)
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(send twig set-pos pos)
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(send-message 'grow-seed (list
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(list 'plant-id id)
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(list 'amount grow-amount)))
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(send-message 'new-branch-twig (list
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(list 'plant-id id)
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(list 'twig-id (send twig get-id))
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(list 'type (send twig get-type))
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(list 'dir (send twig get-dir))
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(list 'width (send twig get-width))
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(list 'num-points (send twig get-num-points))
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(list 'render-type (send twig get-render-type))
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))
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(set! twigs (cons-twig twig twigs max-twigs '())))
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(define/public (get-random-twig)
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(if (not (null? twigs))
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(send (choose twigs) get-random-twig)
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#f))
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(define/public (get-twig-from-dir dir)
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(let ((dir (vnormalise dir)))
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(cadr (foldl
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(lambda (twig l)
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(let ((d (vdot (vnormalise (send twig get-dir)) dir)))
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(if (> d (car l))
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(list d twig)
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l)))
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(list -99 #f)
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twigs))))
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(define/augment (update)
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; grow a new ornament?
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(when (and (not (null? properties)) (zero? (random ornament-grow-probability)))
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(let ((twig (get-random-twig)))
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(when twig
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(let
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((property (choose properties))
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(point-index (random (send twig get-length))))
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(when (not (eq? property 'curly))
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(send twig add-ornament point-index
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(cond
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((or
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(eq? property 'leaf)
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(eq? property 'wiggle))
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(make-object ornament-logic%
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(get-next-ornament-id)
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property
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this
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twig
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point-index))
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(else
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(error "property not understood " property)))))))))
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(map
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(lambda (twig)
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(send twig update))
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twigs))
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(super-new)))
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(define game-logic%
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(class game-logic-object%
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(field
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(plants '())
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(pickups '()))
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(inherit send-message)
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(define/public (setup)
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(for ((i (in-range 0 num-pickups)))
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(add-pickup (make-object pickup-logic% i (choose (list 'leaf 'curly 'wiggle))
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(vmul (srndvec) pickup-dist-radius)))))
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(define/public (add-player plant)
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(send-message 'player-plant (list
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(list 'plant-id (send plant get-id))
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(list 'pos (send plant get-pos))))
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(set! plants (cons plant plants)))
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(define/public (add-plant plant)
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(printf "new-plant added~n")
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(send-message 'new-plant (list
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(list 'plant-id (send plant get-id))
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(list 'pos (send plant get-pos))
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(list 'size (send plant get-size))))
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(set! plants (cons plant plants)))
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(define/public (add-pickup pickup)
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(send-message 'new-pickup
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(list
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(list 'pickup-id (send pickup get-id))
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(list 'type (send pickup get-type))
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(list 'pos (send pickup get-pos))))
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(set! pickups (cons pickup pickups)))
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; todo - distribute the checking of stuff like
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; this to a random selection of pickups/plants
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; to distribute the cpu load
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(define/augment (update)
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(for-each
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(lambda (pickup)
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(for-each
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(lambda (plant)
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(send plant check-pickup pickup))
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plants))
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pickups)
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; remove the pickups that have been 'picked up'
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(set! pickups (filter
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(lambda (pickup)
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(not (send pickup picked-up?)))
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pickups))
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(map
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(lambda (plant)
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(send plant update))
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plants))
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(super-new)))
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