get-screen-height
get-screen-width
get-screen-bpp
+ set-screen-bpp!
resize-screen
quit-video
clear-screen
flip-screen
+ set-screen-title!
+ get-screen-title
set-2d-mode
set-3d-mode
3d-mode?
- set-frames-per-second
+ get-frames-per-second
+ set-frames-per-second!
init-frame-time
get-frame-time
delay-frame
progn-textures
draw
load-texture
+ get-texture-properties
draw-texture
draw-line
draw-quad
set-camera
camera-look
load-font
- render-text))
+ render-text)
+ #:export-syntax (glmatrix-block)
+ #:re-export (glPushMatrix
+ glPopMatrix))
+
;;; Screen
(define screen #f)
(define flags 0)
-(define (init-video width height bpp #:key (mode '2d) (title ""))
- (cond ((not screen)
- (SDL_Init SDL_INIT_VIDEO)
- (let ((info (SDL_GetVideoInfo)))
- (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
- (set! flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE
- (if (= (assoc-ref info 'hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE)
- (if (= (assoc-ref info 'blit_hw) 0) 0 SDL_HWACCEL)))
- (set! screen (SDL_SetVideoMode width height bpp flags))
- (SDL_WM_SetCaption title "")
- (init-gl)
- (if (eq? mode '3d) (set-3d-mode) (set-2d-mode))))))
+(define* (init-video width height bpp #:key (mode '2d) (title "") (fps 20))
+ (SDL_Init SDL_INIT_VIDEO)
+ (let ((info (SDL_GetVideoInfo)))
+ (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
+ (set! flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE
+ (if (= (assoc-ref info 'hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE)
+ (if (= (assoc-ref info 'blit_hw) 0) 0 SDL_HWACCEL)))
+ (set! screen (SDL_SetVideoMode width height bpp flags))
+ (set-screen-title! title)
+ (set-frames-per-second! fps)
+ (init-gl)
+ (if (eq? mode '3d) (set-3d-mode) (set-2d-mode))))
(define (get-screen-height)
(surface-h screen))
(surface-w screen))
(define (get-screen-bpp)
- (surface-format-BytesPerPixel screen))
+ (* (surface-format-BytesPerPixel screen) 8))
+
+(define (set-screen-bpp! bpp)
+ (cond (screen
+ (set! screen (SDL_SetVideoMode (get-screen-width) (get-screen-height) bpp flags)))))
(define (resize-screen width height)
(cond (screen
(SDL_GL_SwapBuffers))
+(define screen-title "")
+
+(define (set-screen-title! title)
+ (set! screen-title title)
+ (SDL_WM_SetCaption title ""))
+
+(define (get-screen-title)
+ screen-title)
+
+
(define mode '2d)
(define (set-2d-mode)
;;; Frames per second
-(define set-frames-per-second #f)
-(define init-frame-time #f)
-(define get-frame-time #f)
-(define delay-frame #f)
+(define time 0)
+(define frames-per-second 20)
+(define time-per-frame 50) ;in ms
-;; (let ((time 0) (time-per-frame (/ 1000.0 *frames-per-second*)))
-;; (set! set-frames-per-second
-;; (lambda (fps)
-;; (set! time-per-frame (/ 1000.0 fps))))
+(define (get-frames-per-second)
+ frames-per-second)
-;; (set! init-frame-time
-;; (lambda ()
-;; (set! time (SDL_GetTicks))))
+(define (set-frames-per-second! fps)
+ (set! frames-per-second fps)
+ (set! time-per-frame (/ 1000.0 fps)))
-;; (set! get-frame-time
-;; (lambda ()
-;; time))
+(define (init-frame-time)
+ (set! time (SDL_GetTicks)))
-;; (set! delay-frame
-;; (lambda ()
-;; (let ((frame-time (- (SDL_GetTicks) time)))
-;; (cond ((< frame-time time-per-frame)
-;; (SDL_Delay (- time-per-frame frame-time))))))))
+(define (get-frame-time)
+ time)
+
+(define (delay-frame)
+ (let ((frame-time (- (SDL_GetTicks) time)))
+ (cond ((< frame-time time-per-frame)
+ (SDL_Delay (- time-per-frame frame-time))))))
;;; Drawing
(set-texture-size! texture real-w real-h)
texture))))))
+(define (get-texture-properties texture)
+ `((width . ,(texture-w texture)) (height . ,(texture-h texture))))
+
(define* (draw-texture texture #:optional (zoom 1))
(cond (texture
(let ((width (texture-w texture))
(glNormal3f 0 1 0)
(draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) #:texture (or texture-3 texture) #:color (or color-3 color))
(glNormal3f 0 -1 0)
- (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture (or texture-4 texture) #:color (or color-4 color))
+ (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) #:texture (or texture-4 texture) #:color (or color-4 color))
(glNormal3f 1 0 0)
- (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture (or texture-5 texture) #:color (or color-5 color))
+ (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) #:texture (or texture-5 texture) #:color (or color-5 color))
(glNormal3f -1 0 0)
- (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture (or texture-6 texture) #:color (or color-6 color)))))
+ (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) #:texture (or texture-6 texture) #:color (or color-6 color)))))
(define* (translate x y #:optional (z 0))
(glTranslatef x y z))
(glLoadIdentity)
(cond ((3d-mode?) (camera-look))))
+(define-macro (glmatrix-block . code)
+ `(let ((result #f))
+ (glPushMatrix)
+ (set! result (begin ,@code))
+ (glPopMatrix)
+ result))
+
;;; Lights
-(define* (add-light #:key light position ambient (id GL_LIGHT1) (turn-on t))
- (init-lighting)
- (and light (glLightfv id GL_DIFFUSE (first light) (second light) (third light) (fourth light)))
- (and light position (glLightfv GL_POSITION (first position) (second position) (third position) (fourth position)))
- (and ambient (glLightfv id GL_AMBIENT (first ambient) (second ambient) (third ambient) (fourth ambient)))
- (and turn-on (glEnable id))
- id)
+;; (define* (add-light #:key light position ambient (id GL_LIGHT1) (turn-on t))
+;; (init-lighting)
+;; (and light (glLightfv id GL_DIFFUSE (car light) (cadr light) (caddr light) (cadddr light)))
+;; (and light position (glLightfv GL_POSITION (car position) (cadr position) (caddr position) (cadddr position)))
+;; (and ambient (glLightfv id GL_AMBIENT (car ambient) (cadr ambient) (caddr ambient) (cadddr ambient)))
+;; (and turn-on (glEnable id))
+;; id)
;;; Camera
;;; Text and fonts
(define* (load-font font-file #:key (size 40) (encoding ft_encoding_unicode))
- (let ((font (ftglCreateTextureFont font-file)))
+ (let ((font (ftglCreateTextureFont font-file size)))
(ftglSetFontFaceSize font size 72)
(ftglSetFontCharMap font encoding)
font))
(define* (render-text text font #:key (size #f))
- (cond (size (ftglSetFontFaceSize font size 72)))
+ (cond (size
+ (cond ((not (= (ftglGetFontFaceSize font) size))
+ (ftglSetFontFaceSize font size 72))))
+ ((not (= (ftglGetFontFaceSize font) (font-size font)))
+ (ftglSetFontFaceSize font (font-size font) 72)))
(ftglRenderFont font text FTGL_RENDER_ALL))
projects / gacela.git / blobdiff