;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-;;; Default values for Gacela
+(define-module (gacela gacela)
+ #:use-module (gacela events)
+ #:use-module (gacela video)
+ #:use-module (gacela audio)
+ #:use-module (ice-9 optargs)
+ #:export (load-texture
+ load-font
+ *title*
+ *width-screen*
+ *height-screen*
+ *bpp-screen*
+ *frames-per-second*
+ *mode*
+ set-game-properties!
+ get-game-properties
+ init-gacela
+ quit-gacela
+ game-loop
+ game-running?
+ set-game-code)
+ #:export-syntax (game)
+ #:re-export (get-current-color
+ set-current-color
+ with-color
+ progn-textures
+ draw
+ draw-texture
+ draw-line
+ draw-quad
+ draw-rectangle
+ draw-square
+ draw-cube
+ translate
+ rotate
+ to-origin
+ add-light
+ set-camera
+ camera-look
+ render-text))
-(define *title* "Gacela")
-(define *width-screen* 640)
-(define *height-screen* 480)
-(define *bpp-screen* 32)
-(define *frames-per-second* 20)
-(define *mode* '2d)
+;;; Resources Cache
-;;; Audio Subsystem
+(define resources-cache (make-weak-value-hash-table))
-(define init-audio #f)
-(define quit-audio #f)
+(define (from-cache key)
+ (hash-ref resources-cache key))
-(let ((audio #f))
- (set! init-audio
- (lambda ()
- (cond ((not audio) (begin (init-sdl) (set! audio (Mix_OpenAudio 22050 MIX_DEFAULT_FORMAT 2 4096))))
- (else audio))))
+(define (into-cache key res)
+ (hash-set! resources-cache key res))
- (set! quit-audio
- (lambda ()
- (Mix_CloseAudio)
- (set! audio #f))))
+(define-macro (use-cache-with module proc)
+ (let* ((pwc (string->symbol (string-concatenate (list (symbol->string proc) "-without-cache")))))
+ `(begin
+ (define ,pwc (@ ,module ,proc))
+ (define (,proc . param)
+ (let* ((key param)
+ (res (from-cache key)))
+ (cond (res
+ res)
+ (else
+ (set! res (apply ,pwc param))
+ (into-cache key res)
+ res)))))))
+(use-cache-with (gacela video) load-texture)
+(use-cache-with (gacela video) load-font)
-;;; Resources Cache
-(define resources-cache (make-weak-value-hash-table))
+;;; Main Loop
-(define get-resource-from-cache #f)
-(define insert-resource-into-cache #f)
-
-(let ()
- (set! get-resource-from-cache
- (lambda (key)
- (hash-ref resources-cache key)))
-
- (set! insert-resource-into-cache
- (lambda (key res)
- (hash-set! resources-cache key res))))
-
-;;; GaCeLa Functions
-
-(define set-frames-per-second #f)
-(define init-frame-time #f)
-(define get-frame-time #f)
-(define delay-frame #f)
-
-(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))))
-
- (set! init-frame-time
- (lambda ()
- (set! time (SDL_GetTicks))))
-
- (set! get-frame-time
- (lambda ()
- time))
-
- (set! delay-frame
- (lambda ()
- (let ((frame-time (- (SDL_GetTicks) time)))
- (cond ((< frame-time time-per-frame)
- (SDL_Delay (- time-per-frame frame-time))))))))
-
-
-(define set-game-properties! #f)
-(define get-game-properties #f)
-
-(let ((ptitle *title*) (pwidth *width-screen*) (pheight *height-screen*) (pbpp *bpp-screen*) (pfps *frames-per-second*) (pmode *mode*))
- (set! set-game-properties!
- (lambda* (#:key title width height bpp fps mode)
-; (init-video-mode)
- (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))
- (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
- (lambda ()
- `((title . ,ptitle) (width . ,pwidth) (height . ,pheight) (bpp . ,pbpp) (fps . ,pfps) (mode . ,pmode)))))
-
-
-(define-macro (run-game . code)
+(define loop-flag #f)
+(define game-code #f)
+(define game-loop-thread #f)
+
+(define-macro (game . code)
`(let ((game-function ,(if (null? code)
`(lambda () #f)
`(lambda () ,@code))))
- (init-video-mode)
(set-game-code game-function)
(cond ((not (game-running?))
(game-loop)))))
-(define game-loop #f)
-(define game-running? #f)
-(define set-game-code #f)
-
-(let ((running #f) (game-code #f))
- (set! game-loop
- (lambda ()
- (refresh-active-mobs)
- (set! running #t)
- (quit! #f)
- (do () ((quit?))
- (init-frame-time)
- (check-connections)
- (eval-from-clients)
- (process-events)
- (cond ((not (quit?))
- (cond ((video-mode-on?)
- (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
- (to-origin)))
- (refresh-active-mobs)
- (if (procedure? game-code)
- (catch #t
- (lambda () (game-code))
- (lambda (key . args) #f)))
- (cond ((video-mode-on?)
- (run-mobs)
- (SDL_GL_SwapBuffers)))
- (delay-frame))))
- (set! running #f)))
-
- (set! game-running?
- (lambda ()
- running))
-
- (set! set-game-code
- (lambda (game-function)
- (set! game-code game-function))))
+(define-macro (run-in-game-loop . code)
+ `(if game-loop-thread
+ (system-async-mark (lambda () ,@code) game-loop-thread)
+ (begin ,@code)))
+
+(define (init-gacela)
+ (set! game-loop-thread (call-with-new-thread (lambda () (game)))))
+
+(define (quit-gacela)
+ (set! game-loop-thread #f)
+ (set! loop-flag #f))
+
+(define (game-loop)
+; (refresh-active-mobs)
+ (set! loop-flag #t)
+ (init-video *width-screen* *height-screen* *bpp-screen* #:title *title* #:mode *mode* #:fps *frames-per-second*)
+ (while loop-flag
+ (init-frame-time)
+; (check-connections)
+ (process-events)
+ (cond ((quit-signal?)
+ (quit-gacela))
+ (else
+ (clear-screen)
+ (to-origin)
+; (refresh-active-mobs)
+ (if (procedure? game-code)
+ (catch #t
+ (lambda () (game-code))
+ (lambda (key . args) #f)))
+; (run-mobs)
+ (flip-screen)
+ (delay-frame))))
+ (quit-video))
+
+(define (game-running?)
+ loop-flag)
+
+(define (set-game-code game-function)
+ (set! game-code game-function))
+
+
+;;; Game Properties
+
+(define *title* "Gacela")
+(define *width-screen* 640)
+(define *height-screen* 480)
+(define *bpp-screen* 32)
+(define *frames-per-second* 20)
+(define *mode* '2d)
+
+(define* (set-game-properties! #:key title width height bpp fps mode)
+ (if title
+ (set-screen-title! title))
+ (if bpp
+ (run-in-game-loop (set-screen-bpp! bpp)))
+ (if (or width height)
+ (begin
+ (if (not width) (set! width (get-screen-width)))
+ (if (not height) (set! height (get-screen-height)))
+ (run-in-game-loop (resize-screen width height))))
+ (if fps
+ (set-frames-per-second! fps))
+ (if mode
+ (if (eq? mode '3d) (set-3d-mode) (set-2d-mode))))
+
+(define (get-game-properties)
+ `((title . ,(get-screen-title)) (width . ,(get-screen-width)) (height . ,(get-screen-height)) (bpp . ,(get-screen-bpp)) (fps . ,(get-frames-per-second)) (mode . ,(if (3d-mode?) '3d '2d))))
projects / gacela.git / blobdiff