(define *bpp-screen* 32)
(define *frames-per-second* 20)
+
;;; SDL Initialization Subsystem
(define init-sdl #f)
(define quit-sdl #f)
(set! initialized #f))))
-
;;; Video Subsystem
(define init-video-mode #f)
(define resize-screen #f)
(let ((screen #f) (flags 0) (current-width *width-screen*) (current-height *height-screen*) (current-bpp *bpp-screen*))
(set! init-video-mode
- (lambda (. args)
- (let ((width (cond ((assq 'width args
-
- (lambda (&key (width current-width) (height current-height) (bpp *bpp-screen*))
+ (lambda* (#:optional (width current-width) (height current-height) (bpp current-bpp))
(cond ((not screen)
(init-sdl)
(SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
(else #t))))
(set! resize-screen
- (lambda (width height &optional (bpp current-bpp))
+ (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! quit-video-mode
(lambda () (set! screen #f))))
-(defun set-2d-mode ()
+(define (set-2d-mode)
(cond ((not (3d-mode?))
(init-video-mode)
(glDisable GL_DEPTH_TEST)
(apply-mode-change))))
-(defun set-3d-mode ()
+(define (set-3d-mode)
(cond ((3d-mode?)
(init-video-mode)
(glClearDepth 1)
(glDepthFunc GL_LEQUAL)
(apply-mode-change))))
-(defun 3d-mode? ()
- (eq (getf (get-game-properties) :mode) '3d))
+(define (3d-mode?)
+ (eq? (assoc-ref (get-game-properties) 'mode) '3d))
-(defun init-GL ()
+(define (init-GL)
(glShadeModel GL_SMOOTH)
(glClearColor 0 0 0 0)
; (glClearDepth 1)
; (glEnable GL_BLEND)
; (glBlendFunc GL_SRC_ALPHA GL_ONE)
(glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST)
- t)
+ #t)
-(defun init-lighting ()
+(define (init-lighting)
(init-video-mode)
(glEnable GL_LIGHTING))
-(defun resize-screen-GL (width height)
+(define (resize-screen-GL width height)
(glViewPort 0 0 width height)
(glMatrixMode GL_PROJECTION)
(glLoadIdentity)
(cond ((3d-mode?) (let ((ratio (if (= height 0) width (/ width height))))
(gluPerspective 45 ratio 0.1 100))) ;0.1
- (t (let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
- (glOrtho -w w -h h 0 1))))
+ (else (let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
+ (glOrtho -w w -h h 0 1))))
(glMatrixMode GL_MODELVIEW)
(glLoadIdentity)
- t))
+ #t)
+
+(define get-current-color #f)
+(define set-current-color #f)
(let ((current-color '(1 1 1 1)))
- (defun get-current-color ()
- current-color)
+ (set! get-current-color
+ (lambda ()
+ current-color))
- (defun set-current-color (red green blue &optional (alpha 1))
- (setq current-color (list red green blue alpha))
- (glColor4f red green blue alpha)))
+ (set! set-current-color
+ (lambda* (red green blue #:optional (alpha 1))
+ (set! current-color (list red green blue alpha))
+ (glColor4f red green blue alpha))))
-(defun load-image (image-file &key (transparent-color nil))
+(define* (load-image image-file #:key transparent-color)
(init-video-mode)
(let ((loaded-image (IMG_Load image-file)))
- (cond ((= loaded-image 0) nil)
- (t (let ((optimized-image (SDL_DisplayFormat loaded-image)))
- (SDL_FreeSurface loaded-image)
- (cond ((= optimized-image 0) nil)
- ((null transparent-color) optimized-image)
- (t (SDL_SetColorKey optimized-image
- SDL_SRCCOLORKEY
- (SDL_MapRGB (surface-format optimized-image)
- (car transparent-color)
- (cadr transparent-color)
- (caddr transparent-color)))
- optimized-image)))))))
+ (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
-(let ((audio nil))
-
- (defun init-audio ()
- (cond ((null audio) (progn (init-sdl) (setq audio (Mix_OpenAudio 22050 MIX_DEFAULT_FORMAT 2 4096))))
- (t audio)))
-
- (defun quit-audio ()
- (setq audio (Mix_CloseAudio))))
-
-
-;;; Resources Manager
-(defstruct resource plist constructor destructor time)
-
-(defun make-resource-texture (&key filename min-filter mag-filter)
- `(:type texture :filename ,filename :min-filter ,min-filter :mag-filter ,mag-filter))
-
-(defun make-resource-font (&key filename encoding)
- `(:type font :filename ,filename :enconding ,encoding))
-
-(defun make-resource-sound (&key filename)
- `(:type sound :filename ,filename))
-
-(defun make-resource-music (&key filename)
- `(:type music :filename ,filename))
-
-(defmacro get-rtime (key)
- `(resource-time (gethash ,key resources-table)))
-
-(defmacro get-rplist (key)
- `(resource-plist (gethash ,key resources-table)))
-
-(defmacro get-rconstructor (key)
- `(resource-constructor (gethash ,key resources-table)))
-
-(defmacro get-rdestructor (key)
- `(resource-destructor (gethash ,key resources-table)))
+(define init-audio #f)
+(define quit-audio #f)
-(let ((resources-table (make-hash-table :test 'equal))
- (expiration-time 50000))
-
- (defun set-expiration-time (new-time)
- (setq expiration-time new-time))
-
- (defun set-resource (key plist constructor destructor &key static)
- (expire-resources)
- (setf (gethash key resources-table)
- (make-resource :plist plist
- :constructor constructor
- :destructor destructor
- :time (if static t (SDL_GetTicks)))))
-
- (defun get-resource (key)
- (cond ((null (gethash key resources-table)) nil)
- (t (let ((time (get-rtime key)))
- (cond ((null time) (funcall (get-rconstructor key)))
- ((numberp time) (setf (get-rtime key) (SDL_GetTicks))))
- (get-rplist key)))))
-
- (defun free-resource (key)
- (funcall (get-rdestructor key))
- (setf (get-rtime key) nil))
-
- (defun expire-resource (key &optional (now (SDL_GetTicks)))
- (let ((time (get-rtime key)))
- (cond ((and (numberp time) (> (- now time) expiration-time)) (free-resource key)))))
-
- (defun expire-resources ()
- (maphash (lambda (key res) (expire-resource key)) resources-table))
-
- (defun free-all-resources ()
- (maphash (lambda (key res) (free-resource key)) resources-table)))
-
-
-;;; Connection with Gacela Clients
-(let (server-socket clients)
- (defun start-server (port)
- (cond ((null server-socket) (setq server-socket (si::socket port :server #'check-connections)))))
+(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))))
- (defun check-connections ()
- (cond ((and server-socket (listen server-socket)) (setq clients (cons (si::accept server-socket) clients)))))
+ (set! quit-audio
+ (lambda ()
+ (Mix_CloseAudio)
+ (set! audio #f))))
- (defun eval-from-clients ()
- (labels ((eval-clients (cli-socks)
- (cond (cli-socks
- (let ((cli (car cli-socks)))
- (cond ((si::listen cli)
- (secure-block cli (eval (read cli)))
- (si::close cli)
- (eval-clients (cdr cli-socks)))
- (t
- (cons cli (eval-clients (cdr cli-socks))))))))))
- (setq clients (eval-clients clients))))
- (defun stop-server ()
- (cond (server-socket (si::close server-socket) (setq server-socket nil)))
- (cond (clients
- (labels ((close-clients (cli-socks)
- (si::close (car cli-socks))
- (close-clients (cdr cli-socks))))
- (close-clients clients))
- (setq clients nil)))))
+;;; GaCeLa Functions
+(define set-frames-per-second #f)
+(define init-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))))
-;;; GaCeLa Functions
-(let (time (time-per-frame (/ 1000.0 *frames-per-second*)))
- (defun set-frames-per-second (fps)
- (setq time-per-frame (/ 1000.0 fps)))
+ (set! init-frame-time
+ (lambda ()
+ (set! time (SDL_GetTicks))))
- (defun init-frame-time ()
- (setq 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))))))))
- (defun delay-frame ()
- (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 "") (pwidth *width-screen*) (pheight *height-screen*) (pbpp *bpp-screen*) (pfps *frames-per-second*) (pmode '2d))
- (defun set-game-properties (&key title width height bpp fps mode)
- (init-video-mode)
- (when title (progn (setq ptitle title) (SDL_WM_SetCaption title "")))
- (when (or width height bpp)
- (progn
- (when width (setq pwidth width))
- (when height (setq pheight height))
- (when bpp (setq pbpp bpp))
- (resize-screen pwidth pheight pbpp)))
- (when fps (progn (setq pfps fps) (set-frames-per-second fps)))
- (when mode (progn (setq pmode mode) (if (eq mode '3d) (set-3d-mode) (set-2d-mode))))
- (get-game-properties))
-
- (defun get-game-properties ()
- (list :title ptitle :width pwidth :height pheight :bpp pbpp :fps pfps :mode pmode)))
+ (set! set-game-properties
+ (lambda* (#:key title width height bpp fps mode)
+ (init-video-mode)
+ (if title (begin (set! ptitle title) (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))))
+ (get-game-properties)))
+
+ (set! get-game-properties
+ (lambda ()
+ (list :title ptitle :width pwidth :height pheight :bpp pbpp :fps pfps :mode pmode)))
(defmacro run-game (&body code)
projects / gacela.git / commitdiff