blob: 98a7deb948e59e2b8cc35fa1dd4fdcc15a55fbe4 (
plain)
1
2
3
4
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
(use-modules (chickadee)
(chickadee math)
(chickadee math matrix)
(chickadee math vector)
(chickadee graphics engine)
(chickadee graphics model)
(chickadee graphics font)
(ice-9 format))
(define projection (perspective-projection (/ pi 3) (/ 4.0 3.0) 0.1 500.0))
(define translation (make-identity-matrix4))
(define view-matrix (make-identity-matrix4))
(define model-matrix (make-identity-matrix4))
(define position (vec3 0.0 0.0 0.0))
(define velocity (vec3 0.0 0.0 0.0))
(define model #f)
(define text-position #v(4.0 464.0))
(define text "")
(define y-rotation 0.0)
(define (reset-position)
(set-vec3! position 0.0 0.0 -4.0))
(define (load)
(set! model (load-obj "models/suzanne.obj"))
(reset-position))
(define (draw alpha)
(with-projection projection
(draw-model model model-matrix view-matrix))
(draw-text text text-position))
(define (update dt)
;; Update camera position
(set-vec3! velocity
(+ (if (key-pressed? 'd) -1.0 0.0)
(if (key-pressed? 'a) 1.0 0.0))
0.0
(+ (if (key-pressed? 's) -1.0 0.0)
(if (key-pressed? 'w) 1.0 0.0)))
(vec3-normalize! velocity)
(vec3-mult! velocity 0.1)
(vec3-add! position velocity)
(set! text (format #f "(~6,2f, ~6,2f, ~6,2f)"
(vec3-x position)
(vec3-y position)
(vec3-z position)))
;; Compute new view matrix
(matrix4-translate! translation position)
(matrix4-identity! view-matrix)
(matrix4-mult! view-matrix view-matrix translation)
;; Rotate the model about the y-axis
(set! y-rotation (+ y-rotation 0.03))
(matrix4-rotate-y! model-matrix y-rotation))
(define (key-press key modifiers repeat?)
(cond
((eq? key 'q)
(abort-game))
((eq? key 'r)
(reset-position))))
(run-game #:window-title "3D!"
#:load load
#:draw draw
#:update update
#:key-press key-press)
|
