Switch universe.rkt from os/os-big-bang to os2.
This commit is contained in:
parent
4246e5b217
commit
4c76dc29f1
156
universe.rkt
156
universe.rkt
|
@ -6,7 +6,7 @@
|
|||
(require racket/async-channel)
|
||||
(require racket/gui/base)
|
||||
(require 2htdp/image)
|
||||
(require "os-big-bang.rkt")
|
||||
(require "os2.rkt")
|
||||
|
||||
(provide (struct-out stop-with)
|
||||
on-tick
|
||||
|
@ -24,15 +24,15 @@
|
|||
(define (time-evt msecs)
|
||||
(wrap-evt (alarm-evt msecs) (lambda (_) (current-inexact-milliseconds))))
|
||||
|
||||
(define wild-sub (topic-subscriber (wild)))
|
||||
(define (broadcast message) (send-message (topic-publisher 'universe) message))
|
||||
|
||||
(define (replace-world w1 w2)
|
||||
(cond
|
||||
[(stop-with? w2) (transition (stop-with-w w2)
|
||||
(send-message `(new-state ,(stop-with-w w2)))
|
||||
(send-message 'stop))]
|
||||
[else (transition w2 (send-message `(new-state ,w2)))]))
|
||||
|
||||
(define (stop w n)
|
||||
(transition w (unsubscribe n)))
|
||||
(broadcast `(new-state ,(stop-with-w w2)))
|
||||
(broadcast 'stop))]
|
||||
[else (transition w2 (broadcast `(new-state ,w2)))]))
|
||||
|
||||
(struct ticker-state (counter interval limit) #:transparent)
|
||||
|
||||
|
@ -44,87 +44,68 @@
|
|||
(on-tick tick-expr rate-expr 0))
|
||||
((_ tick-expr rate-expr limit-expr)
|
||||
(list
|
||||
(subscribe 'ticker-handler
|
||||
(message-handlers w
|
||||
['tick (replace-world w (tick-expr w))]
|
||||
['stop (stop w 'ticker-handler)]))
|
||||
(spawn (os-big-bang (ticker-state 0 rate-expr limit-expr)
|
||||
(subscribe 'stop-listener
|
||||
(message-handlers ts
|
||||
['stop (transition ts
|
||||
(unsubscribe 'stop-listener)
|
||||
(unsubscribe 'ticker))]))
|
||||
(let loop ((next-alarm-time 0))
|
||||
(subscribe 'ticker
|
||||
(ground-message-handler
|
||||
(and w (ticker-state counter interval limit))
|
||||
[((list 'timer-alarm next-alarm-time)
|
||||
(time-evt next-alarm-time)
|
||||
=> now)
|
||||
(if (and (positive? limit) (>= counter limit))
|
||||
(transition w (unsubscribe 'ticker))
|
||||
(transition (ticker-state (+ counter 1) interval limit)
|
||||
(unsubscribe 'ticker)
|
||||
(loop (+ now (* 1000 interval)))
|
||||
(send-message 'tick)))])))))))))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
#:id id
|
||||
['tick (replace-world w (tick-expr w))])
|
||||
(spawn (transition (ticker-state 0 rate-expr limit-expr)
|
||||
(role wild-sub
|
||||
#:state ts
|
||||
['stop (transition ts (kill))])
|
||||
(let loop ((next-alarm-time 0))
|
||||
(role (topic-subscriber (time-evt next-alarm-time))
|
||||
#:state (and ts (ticker-state counter interval limit))
|
||||
#:id id
|
||||
[now
|
||||
(if (and (positive? limit) (>= counter limit))
|
||||
(transition ts (kill))
|
||||
(transition (ticker-state (+ counter 1) interval limit)
|
||||
(delete-role id)
|
||||
(loop (+ now (* 1000 interval)))
|
||||
(broadcast 'tick)))]))))))))
|
||||
|
||||
(define-syntax-rule (on-key key-expr)
|
||||
(subscribe 'key-handler
|
||||
(message-handlers w
|
||||
[`(key-down ,kev) (replace-world w (key-expr w kev))]
|
||||
['stop (stop w 'key-handler)])))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(key-down ,kev) (replace-world w (key-expr w kev))]))
|
||||
|
||||
(define-syntax-rule (on-release release-expr)
|
||||
(subscribe 'release-handler
|
||||
(message-handlers w
|
||||
[`(key-up ,kev) (replace-world w (release-expr w kev))]
|
||||
['stop (stop w 'release-handler)])))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(key-up ,kev) (replace-world w (release-expr w kev))]))
|
||||
|
||||
(define-syntax-rule (on-mouse mouse-expr)
|
||||
(subscribe 'mouse-handler
|
||||
(message-handlers w
|
||||
[`(mouse ,x ,y ,mev) (replace-world w (mouse-expr w x y mev))]
|
||||
['stop (stop w 'mouse-handler)])))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(mouse ,x ,y ,mev) (replace-world w (mouse-expr w x y mev))]))
|
||||
|
||||
(define-syntax-rule (stop-when last-world?)
|
||||
(subscribe 'stop-when-handler
|
||||
(message-handlers w
|
||||
[`(new-state ,_) (if (last-world? w)
|
||||
(replace-world w (stop-with w))
|
||||
w)]
|
||||
['stop (stop w 'stop-when-handler)])))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(new-state ,_) (if (last-world? w)
|
||||
(replace-world w (stop-with w))
|
||||
w)]))
|
||||
|
||||
(define-syntax-rule (on-draw render-expr) (to-draw render-expr))
|
||||
|
||||
(define-syntax-rule (to-draw render-expr)
|
||||
(subscribe 'draw-handler
|
||||
(message-handlers w
|
||||
[`(new-state ,_) (transition w (send-message `(render ,(render-expr w))))]
|
||||
['stop (stop w 'draw-handler)])))
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(new-state ,_) (transition w (broadcast `(render ,(render-expr w))))]))
|
||||
|
||||
(define (ui-actions c:ui->world c:world->ui)
|
||||
(list
|
||||
(spawn (os-big-bang 'none
|
||||
(subscribe 'inbound-relay
|
||||
(ground-message-handler w
|
||||
[('communication-from-ui
|
||||
c:ui->world
|
||||
=> message)
|
||||
(transition w (send-message message))]))
|
||||
(subscribe 'stopper
|
||||
(message-handlers w
|
||||
['stop (transition w
|
||||
(send-meta-message
|
||||
(lambda ()
|
||||
(async-channel-put c:world->ui 'stop)))
|
||||
(unsubscribe 'inbound-relay)
|
||||
(unsubscribe 'stopper))]))))
|
||||
(subscribe 'renderer
|
||||
(message-handlers w
|
||||
[`(render ,scene)
|
||||
(transition w
|
||||
(send-meta-message (lambda () (async-channel-put c:world->ui `(render ,scene)))))]
|
||||
['stop (stop w 'renderer)]))))
|
||||
(role (topic-subscriber c:ui->world) #:state w)
|
||||
(role wild-sub
|
||||
#:state w
|
||||
['stop
|
||||
(async-channel-put c:world->ui 'stop)
|
||||
(transition w (kill))])
|
||||
(role wild-sub
|
||||
#:state w
|
||||
[`(render ,scene)
|
||||
(async-channel-put c:world->ui `(render ,scene))
|
||||
w])))
|
||||
|
||||
(define (make-key-event code)
|
||||
(cond
|
||||
|
@ -190,18 +171,21 @@
|
|||
(send canvas refresh-now)]
|
||||
[_ 'ignore])
|
||||
(loop))))
|
||||
|
||||
(define (error-listener topic)
|
||||
(role topic
|
||||
#:state w
|
||||
#:topic flow
|
||||
#:reason reason
|
||||
#:on-absence (begin (when reason
|
||||
(write (list flow '--> reason))
|
||||
(newline))
|
||||
w)))
|
||||
(thread
|
||||
(lambda ()
|
||||
(ground-vm (apply os-big-bang
|
||||
initial-state
|
||||
(ui-actions c:ui->world c:world->ui)
|
||||
#;(spawn
|
||||
(os-big-bang 'none
|
||||
(subscribe 'echoer
|
||||
(message-handlers w
|
||||
[any
|
||||
(transition w
|
||||
(send-meta-message (lambda ()
|
||||
(write (list any '-> w))
|
||||
(newline))))]))))
|
||||
initial-action)))))
|
||||
(ground-vm (transition initial-state
|
||||
(ui-actions c:ui->world c:world->ui)
|
||||
(spawn (transition 'no-state
|
||||
(error-listener (topic-publisher (wild)))
|
||||
(error-listener (topic-subscriber (wild)))))
|
||||
initial-action)))))
|
||||
|
|
Loading…
Reference in New Issue