;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+(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
+ 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))
+
+
;;; Default values for Gacela
+
+(define *title* "Gacela")
(define *width-screen* 640)
(define *height-screen* 480)
(define *bpp-screen* 32)
(define *frames-per-second* 20)
-
-;;; SDL Initialization Subsystem
-(define init-sdl #f)
-(define quit-sdl #f)
-
-(let ((initialized #f))
- (set! init-sdl
- (lambda ()
- (cond ((not initialized) (SDL_Init SDL_INIT_EVERYTHING) (set! initialized #t))
- (else initialized))))
-
- (set! quit-sdl
- (lambda ()
- (SDL_Quit)
- (set! initialized #f))))
-
-
-
-;;; Video Subsystem
-(define init-video-mode #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*))
- (set! init-video-mode
- (lambda (. args)
- (let ((width (cond ((assq 'width args
-
- (lambda (&key (width current-width) (height current-height) (bpp *bpp-screen*))
- (cond ((not screen)
- (init-sdl)
- (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
- (set! flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE
- (if (= (getf (SDL_GetVideoInfo) :hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE)
- (if (= (getf (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))
- (else #t))))
-
- (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)))
-
- (set! quit-video-mode
- (lambda () (set! screen #f))))
-
-(defun set-2d-mode ()
- (cond ((not (3d-mode?))
- (init-video-mode)
- (glDisable GL_DEPTH_TEST)
- (apply-mode-change))))
-
-(defun set-3d-mode ()
- (cond ((3d-mode?)
- (init-video-mode)
- (glClearDepth 1)
- (glEnable GL_DEPTH_TEST)
- (glDepthFunc GL_LEQUAL)
- (apply-mode-change))))
-
-(defun 3d-mode? ()
- (eq (getf (get-game-properties) :mode) '3d))
-
-(defun init-GL ()
- (glShadeModel GL_SMOOTH)
- (glClearColor 0 0 0 0)
-; (glClearDepth 1)
-; (glDepthFunc GL_LEQUAL)
-; (glEnable GL_BLEND)
-; (glBlendFunc GL_SRC_ALPHA GL_ONE)
- (glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST)
- t)
-
-(defun init-lighting ()
- (init-video-mode)
- (glEnable GL_LIGHTING))
-
-(defun 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))))
- (glMatrixMode GL_MODELVIEW)
- (glLoadIdentity)
- t))
-
-(let ((current-color '(1 1 1 1)))
- (defun get-current-color ()
- 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)))
-
-(defun load-image (image-file &key (transparent-color nil))
- (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)))))))
-
-
-;;; 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)))
-
-(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)))))
-
- (defun check-connections ()
- (cond ((and server-socket (listen server-socket)) (setq clients (cons (si::accept server-socket) clients)))))
-
- (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
-(let (time (time-per-frame (/ 1000.0 *frames-per-second*)))
- (defun set-frames-per-second (fps)
- (setq time-per-frame (/ 1000.0 fps)))
-
- (defun init-frame-time ()
- (setq time (SDL_GetTicks)))
-
- (defun delay-frame ()
- (let ((frame-time (- (SDL_GetTicks) time)))
- (cond ((< frame-time time-per-frame)
- (SDL_Delay (- time-per-frame frame-time)))))))
-
-
-(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)))
-
-
-(defmacro run-game (&body code)
- `(let ((game-function (lambda () ,@code)))
- (init-video-mode)
+(define *mode* '2d)
+
+
+;;; Resources Cache
+
+(define resources-cache (make-weak-value-hash-table))
+
+(define (from-cache key)
+ (hash-ref resources-cache key))
+
+(define (into-cache key res)
+ (hash-set! resources-cache key res))
+
+(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)
+
+
+;;; Game Properties
+
+(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)))))
+
+
+;;; Main Loop
+
+(define loop-flag #f)
+(define game-code #f)
+
+(define-macro (game . code)
+ `(let ((game-function ,(if (null? code)
+ `(lambda () #f)
+ `(lambda () ,@code))))
(set-game-code game-function)
(cond ((not (game-running?))
(game-loop)))))
-(let (running game-code)
- (defun game-loop ()
- (setq running t)
- (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)
- (refresh-active-objects)
- (when (functionp game-code) (funcall game-code))
- (render-objects)
- (SDL_GL_SwapBuffers)
- (delay-frame))))
- (setq running nil))
-
- (defun game-running? ()
- running)
-
- (defun set-game-code (game-function)
- (setq game-code game-function)))
-
-(defun quit-game ()
- (free-all-resources)
- (quit-audio)
- (quit-video-mode)
-; (quit-all-mobs)
- (kill-all-objects)
-; (clear-events)
-; (quit-events)
- (quit-sdl))
+(define (init-gacela)
+ (call-with-new-thread (lambda () (game))))
+
+(define (quit-gacela)
+ (set! loop-flag #f))
+
+(define (game-loop)
+; (refresh-active-mobs)
+ (set! loop-flag #t)
+ (init-video 640 480 32)
+ (while loop-flag
+ (init-frame-time)
+; (check-connections)
+ (process-events)
+ (cond ((not (quit?))
+ (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))
projects / gacela.git / blobdiff