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Convert syndicate-gl/2d basic example to syndicate/actor style

This commit is contained in:
Tony Garnock-Jones 2016-07-10 19:22:48 -04:00
parent adf6603440
commit 3f3249e7a1
1 changed files with 47 additions and 77 deletions
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124
racket/syndicate-gl/examples/basic.rkt
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@ -1,96 +1,66 @@
#lang racket #lang racket
(require syndicate) (require (only-in syndicate seal))
(require syndicate/actor)
(require 2htdp/image) (require 2htdp/image)
(require "../2d.rkt") (require "../2d.rkt")
(define window-projection (at-meta (?! (window ? ?))))
(define key-pressed-projection (key-pressed (?!)))
(define (spawn-background) (define (spawn-background)
(spawn (lambda (e s) (actor
(match e (react
[(? patch? p) (during (window $width $height) #:meta-level 1
(define-values (added removed) (patch-project/set/single p window-projection)) (assert (scene (seal `((push-matrix (scale ,width ,(* height 2))
(transition s (for/list [(w added)] (translate 0 -0.25)
(match-define (window width height) w) (texture
(update-scene `((push-matrix (scale ,width ,(* height 2)) ,(overlay/xy (rectangle 1 1 "solid" "white")
(translate 0 -0.25) 0 0
(texture (rectangle 1 2 "solid" "black"))))
,(overlay/xy (rectangle 1 1 "solid" "white") ;; (rotate -30)
0 0 ;; (scale 5 5)
(rectangle 1 2 "solid" "black")))) ))
;; (rotate -30) (seal `()))
;; (scale 5 5) #:meta-level 1)))))
)
`())))]
[_ #f]))
(void)
(patch-seq
(sub (window ? ?) #:meta-level 1)
;; (assert 'fullscreen #:meta-level 1)
)))
(define (spawn-player-avatar) (define (spawn-player-avatar)
(local-require 2htdp/planetcute) (local-require 2htdp/planetcute)
(define CC character-cat-girl) (define CC character-cat-girl)
(define (move-to x y keys-down)
(transition (list x y keys-down) (actor (react
(update-sprites (field [x 100] [y 100])
(simple-sprite 0 x y (image-width CC) (image-height CC) CC)))) (assert (simple-sprite -0.5 (x) (y) (image-width CC) (image-height CC) CC)
(spawn (lambda (e s) #:meta-level 1)
(match-define (list x y keys-down) s)
(match e (field [keys-down (set)])
[(? patch? p) (on (asserted (key-pressed $k)) (keys-down (set-add (keys-down) k)))
(define-values (added removed) (on (retracted (key-pressed $k)) (keys-down (set-remove (keys-down) k)))
(patch-project/set/single p key-pressed-projection)) (define (key->delta k distance) (if (set-member? (keys-down) k) distance 0))
(define new-keys-down (set-subtract (set-union keys-down added) removed))
(transition (list x y new-keys-down) '())] (on (message (frame-event _ _ $elapsed-ms _) #:meta-level 1)
[(message (at-meta (frame-event _ _ elapsed-ms _))) (define-values (old-x old-y) (values (x) (y)))
(define-values (old-x old-y) (values x y))
(define distance (* 0.360 elapsed-ms)) (define distance (* 0.360 elapsed-ms))
(let* ((x (if (set-member? keys-down 'left) (- x distance) x)) (define nx (+ old-x (key->delta 'right distance) (key->delta 'left (- distance))))
(x (if (set-member? keys-down 'right) (+ x distance) x)) (define ny (+ old-y (key->delta 'down distance) (key->delta 'up (- distance))))
(y (if (set-member? keys-down 'up) (- y distance) y)) (when (not (and (= nx old-x) (= ny old-y)))
(y (if (set-member? keys-down 'down) (+ y distance) y))) (x nx)
(and (not (and (= x old-x) (= y old-y))) (y ny))))))
(move-to x y keys-down)))]
[_ #f]))
(list 100 100 (set))
(patch-seq
(update-sprites
(simple-sprite -0.5 100 100 (image-width CC) (image-height CC) CC))
(sub (frame-event ? ? ? ?) #:meta-level 1)
(sub (key-pressed ?)))))
(define (spawn-frame-counter) (define (spawn-frame-counter)
(spawn (lambda (e s) (actor (react (field [i empty-image])
(match e (assert (simple-sprite -10 300 10 (image-width (i)) (image-height (i)) (i))
[(message (at-meta (frame-event counter sim-time-ms _ _))) #:meta-level 1)
(and (> sim-time-ms 0) (on (message (frame-event $counter $sim-time-ms _ _) #:meta-level 1)
(let ((i (text (format "~a fps" (/ counter (/ sim-time-ms 1000.0))) 22 "black"))) (when (> sim-time-ms 0)
(transition s (update-sprites (simple-sprite -10 300 10 (define fps (/ counter (/ sim-time-ms 1000.0)))
(image-width i) (i (text (format "~a fps" fps) 22 "black")))))))
(image-height i)
i)))))]
[_ #f]))
(void)
(sub (frame-event ? ? ? ?) #:meta-level 1)))
(2d-dataspace (spawn-keyboard-integrator) (2d-dataspace (spawn-keyboard-integrator)
(spawn-background) (spawn-background)
;; (spawn-frame-counter) ;; (spawn-frame-counter)
(spawn-player-avatar) (spawn-player-avatar)
(spawn (lambda (e s) #f) (actor (react (assert (simple-sprite 0 50 50 50 50 (circle 50 "solid" "orange"))
(void) #:meta-level 1)
(update-sprites (simple-sprite 0 50 50 50 50 (circle 50 "solid" "orange")) (assert (simple-sprite -1 60 60 50 50 (circle 50 "solid" "green"))
(simple-sprite -1 60 60 50 50 (circle 50 "solid" "green")))) #:meta-level 1)))
(spawn (lambda (e s) (actor (until (message (key-event #\q #t _) #:meta-level 1))
(match e (assert! 'stop #:meta-level 1)))
[(message _)
(transition s (assert 'stop #:meta-level 1))]
[_ #f]))
(void)
(sub (key-event #\q #t ?) #:meta-level 1))
)
(exit 0) (exit 0)