-
-;;; 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)
- (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 *mode* '2d)
+(define *fullscreen* 'off)
+
+(define* (set-game-properties! #:key title width height bpp fps mode fullscreen)
+ (if title
+ (set-screen-title! title))
+ (if bpp
+ (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)))
+ (resize-screen width height)))
+ (if fps
+ (set-frames-per-second! fps))
+ (if mode
+ (if (eq? mode '3d) (set-3d-mode) (set-2d-mode)))
+ (if fullscreen
+ (set-fullscreen! fullscreen))
+ (get-game-properties))
+
+(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)) (fullscreen . ,(get-fullscreen))))
+
+
+;;; Mobs Factory
+
+(define mobs-table (make-hash-table))
+(define active-mobs '())
+(define mobs-changed #f)
+
+(define (show-mob-hash mob)
+ (hash-set! mobs-table (mob 'get-mob-id) mob)
+ (set! mobs-changed #t))
+
+(define (hide-mob-hash mob-id)
+ (hash-remove! mobs-table mob-id)
+ (set! mobs-changed #t))
+
+(define (refresh-active-mobs)
+ (cond (mobs-changed
+ (set! mobs-changed #f)
+ (set! active-mobs (hash-map->list (lambda (k v) v) mobs-table)))))
+
+(define (get-active-mobs)
+ active-mobs)
+
+(define (hide-all-mobs)
+ (set! mobs-changed #t)
+ (hash-clear! mobs-table))
+
+(define (mobs-changed?)
+ mobs-changed)
+
+
+(define-macro (show-mob mob)
+ (cond ((list? mob)
+ `(let ((m ,mob))
+ (show-mob-hash m)))
+ (else
+ `(show-mob-hash (lambda* (#:optional (option #f)) (,mob option))))))
+
+(define-macro (hide-mob mob)
+ (cond ((list? mob)
+ `(let ((m ,mob))
+ (hide-mob-hash (m 'get-mob-id))))
+ (else
+ `(hide-mob-hash (,mob 'get-mob-id)))))
+
+(define current-mob-id #f)
+
+(define translate-mob translate)
+
+(define (get-current-mob-id)
+ current-mob-id)
+
+(define* (run-mobs #:optional (mobs (get-active-mobs)))
+ (let ((sorted-mobs (sort mobs (lambda (m1 m2) (< (m1 'get-z-index) (m2 'get-z-index))))))
+ (for-each
+ (lambda (m)
+ (set! current-mob-id (m 'get-mob-id))
+ (glmatrix-block (m)))
+ sorted-mobs)
+ (set! current-mob-id #f)))
+
+
+;;; Making mobs
+
+(define mob-functions (make-hash-table))
+
+(define (get-mob-function-name mob-name)
+ (let ((name (hash-ref mob-functions mob-name)))
+ (cond ((not name)
+ (set! name (gensym))
+ (hash-set! mob-functions mob-name name)))
+ name))
+
+(define-macro (the-mob mob-name init-data)
+ `(let ((mob-id (gensym))
+ (mob-z-index 0)
+ (mob-time 0)
+ (mob-data ,init-data)
+ (saved-data ,init-data))
+ (lambda* (#:optional (option #f))
+ (define (save-data)
+ (let ((time (get-frame-time)))
+ (cond ((not (= time mob-time))
+ (set! mob-time time)
+ (set! saved-data mob-data)))))
+ (case option
+ ((get-mob-id)
+ mob-id)
+ ((get-z-index)
+ mob-z-index)
+ ((get-type)
+ (procedure-name ,mob-name))
+ ((get-data)
+ (save-data)
+ saved-data)
+ (else
+ (cond ((keyword? option)
+ (assoc-ref saved-data (keyword->symbol option)))
+ (else
+ (save-data)
+ (let ((res (,mob-name mob-id mob-data)))
+ (set! mob-z-index (car res))
+ (set! mob-data (cadr res))))))))))
+
+(define-macro (define-mob-function attr . body)
+ (let ((attr (map (lambda (a) (if (list? a) a (list a #f))) attr))
+ (mob-id-symbol (gensym))
+ (mob-id-z-index (gensym))
+ (data-symbol (gensym)))
+ `(lambda (,mob-id-symbol ,data-symbol)
+ (let ((,mob-id-z-index 0))
+ (define (kill-me)
+ (hide-mob-hash ,mob-id-symbol))
+ (define* (translate x y #:optional (z 0))
+ (cond ((3d-mode?)
+ (translate-mob x y z))
+ (else
+ (set! ,mob-id-z-index (+ ,mob-id-z-index z))
+ (translate-mob x y))))
+ (let* ,attr
+ ,@(map
+ (lambda (a)
+ `(let ((val (assoc-ref ,data-symbol ',(car a))))
+ (cond (val (set! ,(car a) val)))))
+ attr)
+ (catch #t
+ (lambda* () ,@body)
+ (lambda (key . args) #f))
+ (list ,mob-id-z-index (list ,@(map (lambda (a) `(cons ',(car a) ,(car a))) attr))))))))
+
+(define-macro (define-mob mob-head . body)
+ (let* ((name (car mob-head))
+ (attr (cdr mob-head))
+ (make-fun-symbol (gensym))
+ (mob-fun-symbol (gensym))
+ (params-symbol (gensym)))
+ `(define (,name . ,params-symbol)
+ (define ,make-fun-symbol
+ (lambda* ,(if (null? attr) '() `(#:key ,@attr))
+ (the-mob ,name (list ,@(map (lambda (a) `(cons ',(car a) ,(car a))) attr)))))
+ (define ,mob-fun-symbol
+ (define-mob-function ,attr ,@body))
+ (cond ((or (null? ,params-symbol) (keyword? (car ,params-symbol)))
+ (apply ,make-fun-symbol ,params-symbol))
+ (else
+ (apply ,mob-fun-symbol ,params-symbol))))))
+
+(define-macro (lambda-mob attr . body)
+ (let ((fun-name (gensym)))
+ `(begin
+ (define-mob-function ,(cons fun-name attr) ,@body)
+ (the-mob 'undefined '() ,fun-name))))
+
+
+;;; Functions for checking mobs (collisions and more)
+
+(define (map-mobs fun type)
+ (let ((mobs (filter (lambda (m) (and (eq? (m 'get-type) type) (not (eq? (m 'get-mob-id) (get-current-mob-id))))) (get-active-mobs))))
+ (map (lambda (m) (fun (m 'get-data))) mobs)))
+
+(define-macro (define-checking-mobs head mob-def . body)
+ (let ((type (car mob-def)) (attr (cdr mob-def)))
+ `(define ,head
+ (map-mobs
+ (lambda (m)
+ (let ,(map (lambda (a) `(,(car a) (assoc-ref m ',(cadr a)))) attr)
+ ,@body))
+ ',type))))
+
+
+;;; Scenes
+
+(define-macro (define-scene name . body)
+ `(define (,name)
+ ,@body))
+
+
+(module-map (lambda (sym var)
+ (if (not (eq? sym '%module-public-interface))
+ (module-export! (current-module) (list sym))))
+ (current-module))