;;; SDL Initialization Subsystem
(define init-sdl #f)
+(define sdl-on? #f)
(define quit-sdl #f)
(let ((initialized #f))
(cond ((not initialized) (SDL_Init SDL_INIT_EVERYTHING) (set! initialized #t))
(else initialized))))
+ (set! sdl-on?
+ (lambda ()
+ (if initialized #t #f)))
+
(set! quit-sdl
(lambda ()
(SDL_Quit)
;;; Video Subsystem
(define init-video-mode #f)
-(define video-mode? #f)
+(define video-mode-on? #f)
(define resize-screen #f)
-(define apply-mode-change #f)
(define quit-video-mode #f)
-(let ((screen #f) (flags 0) (current-width *width-screen*) (current-height *height-screen*) (current-bpp *bpp-screen*))
+(let ((screen #f) (flags 0))
(set! init-video-mode
- (lambda* (#:optional (width current-width) (height current-height) (bpp current-bpp))
+ (lambda ()
(cond ((not screen)
(init-sdl)
- (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
- (set! flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE
- (if (= (assoc-ref (SDL_GetVideoInfo) 'hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE)
- (if (= (assoc-ref (SDL_GetVideoInfo) 'blit_hw) 0) 0 SDL_HWACCEL)))
- (set! screen (SDL_SetVideoMode width height bpp flags))
- (init-gl)
- (resize-screen-GL width height)
- (set! current-width width)
- (set! current-height height)
- (set! current-bpp bpp))
+ (let* ((props (get-game-properties))
+ (width (assoc-ref props 'width)) (height (assoc-ref props 'height))
+ (bpp (assoc-ref props 'bpp)) (title (assoc-ref props 'title))
+ (mode (assoc-ref props 'mode))
+ (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))))
(else #t))))
- (set! video-mode?
+ (set! video-mode-on?
(lambda () (if screen #t #f)))
(set! resize-screen
(lambda* (width height #:optional (bpp current-bpp))
(cond (screen (set! screen (SDL_SetVideoMode width height bpp flags))
- (resize-screen-GL width height)))
- (set! current-width width)
- (set! current-height height)))
-
- (set! apply-mode-change
- (lambda () (resize-screen-GL current-width current-height)))
+ (resize-screen-GL width height)))))
(set! quit-video-mode
(lambda () (set! screen #f))))
(glDepthFunc GL_LEQUAL)
(apply-mode-change))))
+(define (apply-mode-change)
+ (let* ((props (get-game-properties))
+ (width (assoc-ref props 'width)) (height (assoc-ref props 'height)))
+ (resize-screen-GL width height)))
+
(define (3d-mode?)
(eq? (assoc-ref (get-game-properties) 'mode) '3d))
(set! current-color (list red green blue alpha))
(glColor4f red green blue alpha))))
-(define* (load-image image-file #:key transparent-color)
- (init-video-mode)
- (let ((loaded-image (IMG_Load image-file)))
- (cond ((= loaded-image 0) #f)
- (else (let ((optimized-image (SDL_DisplayFormat loaded-image)))
- (SDL_FreeSurface loaded-image)
- (cond ((= optimized-image 0) #f)
- ((not transparent-color) optimized-image)
- (else (SDL_SetColorKey optimized-image
- SDL_SRCCOLORKEY
- (SDL_MapRGB (surface-format optimized-image)
- (car transparent-color)
- (cadr transparent-color)
- (caddr transparent-color)))
- optimized-image)))))))
-
;;; Audio Subsystem
(set! set-game-properties
(lambda* (#:key title width height bpp fps mode)
; (init-video-mode)
- (if title (begin (set! ptitle title) (if (video-mode?) (SDL_WM_SetCaption title ""))))
+ (if title
+ (begin
+ (set! ptitle title)
+ (if (video-mode-on?) (SDL_WM_SetCaption title ""))))
(if (or width height bpp)
(begin
(if width (set! pwidth width))
(if height (set! pheight height))
(if bpp (set! pbpp bpp))
- (resize-screen pwidth pheight pbpp)))
- (if fps (begin (set! pfps fps) (set-frames-per-second fps)))
- (if mode (begin (set! pmode mode) (if (eq? mode '3d) (set-3d-mode) (set-2d-mode))))
+ (if (video-mode-on?) (resize-screen pwidth pheight pbpp))))
+ (if fps
+ (begin
+ (set! pfps fps)
+ (set-frames-per-second fps)))
+ (if mode
+ (begin
+ (set! pmode mode)
+ (if (video-mode-on?)
+ (if (eq? mode '3d) (set-3d-mode) (set-2d-mode)))))
(get-game-properties)))
(set! get-game-properties
(set! running #t)
(quit? #f)
(do () ((quit?))
- (init-frame-time)
-; (check-connections)
-; (eval-from-clients)
- (process-events)
- (cond ((not (quit?))
- (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
- (to-origin)
- (cond ((mobs-changed?) (set! mobs (get-active-mobs))))
- (if (procedure? game-code) (game-code))
- (process-mobs mobs)
- (SDL_GL_SwapBuffers)
- (delay-frame))))
+ (if (sdl-on?) (init-frame-time))
+ (check-connections)
+ (eval-from-clients)
+ (cond ((sdl-on?)
+ (process-events)
+ (cond ((not (quit?))
+ (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
+ (to-origin)
+ (cond ((mobs-changed?) (set! mobs (get-active-mobs))))
+ (if (procedure? game-code) (game-code))
+ (run-mob-actions mobs)
+ (render-mobs mobs)
+ (SDL_GL_SwapBuffers)
+ (delay-frame))))))
(set! running #f)))
(set! game-running?
projects / gacela.git / blobdiff