31 lines
827 B
Scheme
31 lines
827 B
Scheme
(import (scheme base)
|
|
(scheme inexact)
|
|
(hoot ffi)
|
|
(dom canvas)
|
|
(dom document)
|
|
(dom element)
|
|
(dom event)
|
|
(dom image)
|
|
(dom media)
|
|
(dom window))
|
|
|
|
|
|
(define game-width 640.0)
|
|
(define game-height 480.0)
|
|
|
|
(define canvas (get-element-by-id "canvas"))
|
|
(define context (get-context canvas "2d"))
|
|
|
|
;; Draw
|
|
(define (draw prev-time)
|
|
(set-fill-color! context "#140c1c")
|
|
(set-text-align! context "center")
|
|
(set-font! context "bold 24px monospace")
|
|
(fill-text context "Hello, World! :)" (/ game-width 2.0) (/ game-height 2.0))
|
|
(request-animation-frame draw-callback))
|
|
(define draw-callback (procedure->external draw))
|
|
|
|
(set-element-width! canvas (exact game-width))
|
|
(set-element-height! canvas (exact game-height))
|
|
|
|
(request-animation-frame draw-callback)
|