;;; 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 (*title*
+ *width-screen*
+ *height-screen*
+ *bpp-screen*
+ *frames-per-second*
+ *mode*
+ set-game-properties!
+ get-game-properties
+ init-gacela
+ quit-gacela
+ game-loop
+ gacela-script
+ game-running?
+ show-mob-hash
+ hide-mob-hash
+ get-active-mobs
+ hide-all-mobs
+ get-current-mob-id
+ get-mob-function-name
+ map-mobs
+ translate-mob)
+ #:export-syntax (game
+ show-mob
+ hide-mob
+ the-mob
+ define-mob-function
+ define-mob
+ lambda-mob
+ define-checking-mobs)
+ #:re-export (get-frame-time
+ 3d-mode?))
+
+
+;;; Main Loop
+
+(define game-loop-flag #f)
+(define game-loop-thread #f)
+(define game-loop-procedure #f)
+
+(define-macro (run-in-game-loop proc)
+ (let ((pgl (string->symbol (string-concatenate (list (symbol->string proc) "-in-game-loop"))))
+ (flag-symbol (gensym))
+ (value-symbol (gensym)))
+ `(begin
+ (define ,pgl ,proc)
+ (define (,proc . param)
+ (cond ((and game-loop-thread (not (eq? game-loop-thread (current-thread))))
+ (let ((,flag-symbol #f))
+ (define ,value-symbol)
+ (system-async-mark
+ (lambda ()
+ (catch #t
+ (lambda () (set! ,value-symbol (apply ,pgl param)))
+ (lambda (key . args) #f))
+ (set! ,flag-symbol #t))
+ game-loop-thread)
+ (while (not ,flag-symbol))
+ ,value-symbol))
+ (else
+ (apply ,pgl param)))))))
+
+(run-in-game-loop load-texture)
+(run-in-game-loop load-font)
+(run-in-game-loop set-screen-bpp!)
+(run-in-game-loop resize-screen)
+
+(define-macro (game . code)
+ `(set! game-loop-procedure
+ ,(if (null? code)
+ `#f
+ `(lambda (game-elements) ,@code))))
+
+(define (init-gacela)
+; (hide-all-mobs)
+ (cond ((not game-loop-thread)
+ (set! game-loop-thread (call-with-new-thread (lambda () (cond ((not (game-running?)) (game-loop))))))))
+ (while (not game-loop-flag))
+ #t)
+
+(define (quit-gacela)
+; (hide-all-mobs)
+ (set! game-loop-thread #f)
+ (set! game-loop-flag #f)
+ (quit-video))
+
+(define (game-loop)
+; (refresh-active-mobs)
+ (init-video *width-screen* *height-screen* *bpp-screen* #:title *title* #:mode *mode* #:fps *frames-per-second*)
+ (set! game-loop-flag #t)
+ (let loop ((game-elements '()))
+ (cond (game-loop-flag
+ (init-frame-time)
+; (check-connections)
+ (process-events)
+ (cond ((quit-signal?)
+ (quit-gacela))
+ (else
+ (clear-screen)
+ (to-origin)
+; (refresh-active-mobs)
+; (run-mobs)
+; (run-extensions)
+ (if game-loop-procedure
+ (catch #t
+ (lambda () (set! game-elements (game-loop-procedure game-elements)))
+ (lambda (key . args) #f)))
+ (process-game-elements game-elements)
+ (flip-screen)
+ (delay-frame)
+ (loop game-elements)))))))
+
+(define (game-running?)
+ game-loop-flag)
+
+(define (process-game-elements elements)
+ (cond ((not (list? elements))
+ (process-game-elements (list elements)))
+ (else
+ (draw-meshes (filter (lambda (e) (mesh? e)) elements)))))
+
+(define (draw-meshes meshes)
+ (cond ((null? meshes) #t)
+ (else
+ (catch #t
+ (lambda () (mesh-draw (car meshes)))
+ (lambda (key . args) #f))
+ (draw-meshes (cdr meshes)))))
+
+;;; Extensions to main loop
+
+(define extensions '())
+
+(define (add-extension! proc pri)
+ "Add an extension with a priority to the main loop"
+ (set! extensions
+ (sort (assoc-set! extensions proc pri)
+ (lambda (a b)
+ (< (cdr a) (cdr b))))))
+
+(define (remove-extension! proc)
+ "Remove an extension from the main loop"
+ (set! extensions
+ (assoc-remove! extensions proc)))
+
+(define (run-extensions)
+ (for-each (lambda (x) ((car x))) extensions))
+
+
+;;; Game Properties
+
+(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* (#:optional (width current-width) (height current-height) (bpp current-bpp))
- (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))
- (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))))
-
-(define (set-2d-mode)
- (cond ((not (3d-mode?))
- (init-video-mode)
- (glDisable GL_DEPTH_TEST)
- (apply-mode-change))))
-
-(define (set-3d-mode)
- (cond ((3d-mode?)
- (init-video-mode)
- (glClearDepth 1)
- (glEnable GL_DEPTH_TEST)
- (glDepthFunc GL_LEQUAL)
- (apply-mode-change))))
-
-(define (3d-mode?)
- (eq? (assoc-ref (get-game-properties) 'mode) '3d))
-
-(define (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)
-
-(define (init-lighting)
- (init-video-mode)
- (glEnable GL_LIGHTING))
-
-(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
- (else (let* ((w (/ width 2)) (h (/ height 2)))
- (glOrtho (- w) w (- h) h 0 1))))
- (glMatrixMode GL_MODELVIEW)
- (glLoadIdentity)
- #t)
-
-(define get-current-color #f)
-(define set-current-color #f)
-
-(let ((current-color '(1 1 1 1)))
- (set! get-current-color
- (lambda ()
- current-color))
-
- (set! set-current-color
- (lambda* (red green blue #:optional (alpha 1))
- (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
-(define init-audio #f)
-(define quit-audio #f)
-
-(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))))
-
- (set! quit-audio
- (lambda ()
- (Mix_CloseAudio)
- (set! audio #f))))
-
-
-;;; 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))))
-
- (set! init-frame-time
- (lambda ()
- (set! 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))))))))
-
-
-(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))
- (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 ()
- `((title . ,ptitle) (width . ,pwidth) (height . ,pheight) (bpp . ,pbpp) (fps . ,pfps) (mode . ,pmode)))))
-
-
-(define-macro (run-game . code)
- `(let ((game-function (lambda () (begin ,@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 ()
- (set! running #t)
-; (do () ((quit?))
- (do () (#f)
- (init-frame-time)
-; (check-connections)
-; (eval-from-clients)
-; (process-events)
-; (cond ((not (quit?))
- (cond ((not #f))
-; (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
-; (to-origin)
-; (refresh-active-objects)
-; (if (functionp game-code) (funcall game-code))
-; (render-objects)
- (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 (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))
projects / gacela.git / blobdiff