class.scm 1.96 KB
Newer Older
1 2 3
(define-module (class)
  :use-module (oop goops)
  :use-module (util)
Hugo Hörnquist's avatar
Hugo Hörnquist committed
4
  :export (vector-length v3 make-player make-ray))
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

(define-class <v3> ()
  (x #:accessor x #:init-keyword #:x)
  (y #:accessor y #:init-keyword #:y)
  (z #:accessor z #:init-keyword #:z))
(export x y z)

(define* (v3 #:optional (x 0) (y 0) (z 0))
  (make <v3> #:x x #:y y #:z z))

(define-method (+ (v <v3>) (u <v3>))
  (v3 (+ (x v) (x u))
      (+ (y v) (y u))
      (+ (z v) (z u))))

(define-method (* (a <number>) (v <v3>))
  (v3 (* a (x v))
      (* a (y v))
      (* a (z v))))

(define (vector-length v)
  (sqrt (+ (* (x v) (x v))
           (* (y v) (y v))
           (* (z v) (z v)))))

(define-class <player> ()
  (pos #:accessor p #:init-form (v3 1 1))
  (angle #:accessor a #:init-value 0)
33
  (feild-of-view #:accessor fov #:init-value (/ tau 8)))
34 35 36 37
(export p a fov)

(define (make-player x y a)
   (make <player> #:x x #:y y #:a a))
Hugo Hörnquist's avatar
Hugo Hörnquist committed
38 39 40


(define-class <ray> ()
41
  (angle #:accessor a #:init-keyword #:a)
Hugo Hörnquist's avatar
Hugo Hörnquist committed
42 43 44 45
  (length #:accessor length #:init-keyword #:length #:init-value #f)
  (vec #:accessor vec #:init-keyword #:v)
  (pos-on-wall #:accessor pos-on-wall)
  (hit-coord #:accessor hit #:init-keyword #:hit)
Hugo Hörnquist's avatar
Hugo Hörnquist committed
46
  (hit-float-point #:getter hitf #:init-keyword #:hitf)
47
  (wall-direction #:accessor wall-direction)
Hugo Hörnquist's avatar
Hugo Hörnquist committed
48 49 50 51
  (tile-type #:getter type
             #:initial-value 'space
             #:init-keyword #:type
             )
Hugo Hörnquist's avatar
Hugo Hörnquist committed
52 53
  )

Hugo Hörnquist's avatar
Hugo Hörnquist committed
54 55 56 57
(export a length vec pos-on-wall hit hitf local-wall-segment wall-direction type)

(define (decimals x)
  (- x (truncate x)))
Hugo Hörnquist's avatar
Hugo Hörnquist committed
58 59 60 61 62 63

(define-method (initialize (self <ray>) args)
  (next-method)
  (unless (length self)
    (set! (length self) (vector-length (vec self))))

Hugo Hörnquist's avatar
Hugo Hörnquist committed
64 65 66 67 68 69 70 71
  (let* ((xx (x (hitf self)))
         (yy (y (hitf self))))
    (set! (pos-on-wall self)
          (min
           (max (abs (decimals xx))
                (abs (decimals yy)))
           (max (- 1 (abs (decimals xx)))
                (- 1 (abs (decimals yy)))))
72

Hugo Hörnquist's avatar
Hugo Hörnquist committed
73
          ))
74 75

  )
Hugo Hörnquist's avatar
Hugo Hörnquist committed
76 77 78

(define (make-ray . args)
  (apply make <ray> args))