133 lines
4.3 KiB
Scheme
133 lines
4.3 KiB
Scheme
(import (scheme base)
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(scheme inexact)
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(hoot ffi)
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(hoot debug)
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(dom canvas)
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(dom document)
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(dom element)
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(dom event)
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(dom image)
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(dom media)
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(dom window)
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(console))
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(define game-width 640.0)
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(define game-height 480.0)
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(define canvas (get-element-by-id "canvas"))
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(define context (get-context canvas "2d"))
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(define *element-x* (/ game-width 2.0))
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(define-record-type <gelement-type>
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(make-gelement-type interact? image)
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gelement-type?
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(interact? gelement-interact?)
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(image gelement-type-iamge))
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(define-record-type <gelement>
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(make-gelement type content)
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gelement?
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(type gelement-type)
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(content gelement-content set-gelement-content!))
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(define-record-type <parentheses>
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(make-parentheses type pos content)
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parentheses?
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(type parentheses-type)
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(pos parentheses-pos set-parentheses-pos!)
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(content parentheses-content set-parentheses-content!))
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(define-record-type <level>
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(make-level grid left-parenthes right-parenthes)
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level?
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(grid level-grid set-level-grid!)
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(left-parenthes level-left-parenthes set-left-parenthes!)
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(right-parenthes level-right-parenthes set-right-parenthes!))
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(define wall (make-gelement (make-gelement-type #f "wall") '()))
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(define apple (make-gelement (make-gelement-type #t "apple") '(4 5)))
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(define air (make-gelement (make-gelement-type #t "air") '()))
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(define left-parenthes (make-parentheses 'left (cons 0 0) '(+ 1 2 3)))
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(define right-parenthes (make-parentheses 'right (cons 1 1) '(+ 1 2 3)))
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(define ppp (vector (vector apple apple apple apple wall)
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(vector wall wall wall wall wall)
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(vector apple wall wall wall wall)
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(vector wall #nil wall wall wall)
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(vector wall wall wall wall wall)))
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(define *level* (make-level ppp left-parenthes right-parenthes))
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(define (set-grid! x y val)
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(vector-set! (vector-ref (level-grid *level*) y) x val))
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(define (funcall fun args)
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(cond ((equal? fun '+)
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(apply + args))
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((equal? fun 'string-append)
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(apply string-append args))))
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(define (eval-parenthes content)
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(append '()
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(funcall (car content)
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(cdr content))))
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(define (collide-gelement! x y parenthes)
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(dprint "x" x)
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(dprint "y" y)
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(let ((e (vector-ref (vector-ref (level-grid *level*) y) x)))
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(dprint "content" (parentheses-content parenthes))
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(if (gelement-interact? (gelement-type e))
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(begin
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(dprint "Move!")
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(set-grid! x y air)
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(set-parentheses-pos! parenthes (cons x y))
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(set-parentheses-content! parenthes (append (parentheses-content parenthes) (gelement-content e)))
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(dprint "after-content" (parentheses-content parenthes))
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(dprint "grid" (level-grid *level*)))
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(dprint "Boop!"))))
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(define (collide-pareneheses! level)
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(let ((left-parenthes (level-left-parenthes level))
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(right-parenthes (level-right-parenthes level)))
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(if (equal? (parentheses-pos left-parenthes) (parentheses-pos right-parenthes))
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(eval-parenthes
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(append (parentheses-content left-parenthes)
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(parentheses-content right-parenthes))))))
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;; Draw
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(define (draw prev-time)
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(clear-rect context 0.0 0.0 game-width game-height)
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(set-fill-color! context "#140c1c")
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(set-text-align! context "center")
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(set-font! context "bold 24px monospace")
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(fill-text context "Hello, World! :)" *element-x* (/ game-height 2.0))
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(request-animation-frame draw-callback))
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(define draw-callback (procedure->external draw))
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(set-element-width! canvas (exact game-width))
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(set-element-height! canvas (exact game-height))
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(request-animation-frame draw-callback)
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;; Input
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(define key:left "ArrowLeft")
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(define key:right "ArrowRight")
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(define (on-key-down event)
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(let ((key (keyboard-event-code event)))
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(cond
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((string=? key key:left)
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(dprint "key:" key)
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(set! *element-x* (- *element-x* 10)))
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((string=? key key:right)
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(dprint "key:" key)
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(set! *element-x* (+ *element-x* 10))
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(collide-gelement! (+ 1 (car (parentheses-pos (level-left-parenthes *level*)))) (cdr (parentheses-pos (level-left-parenthes *level*))) (level-left-parenthes *level*))
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))))
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(add-event-listener! (current-document) "keydown"
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(procedure->external on-key-down))
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