X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fgacela.scm;h=1d963c6772b29a5f1924d84f0aef14d4890c97d4;hb=cf6094cdd9222b104b1cf08637de9d8021473923;hp=6be5ee8a5d178c8eb213af34899bbbdfcd730276;hpb=44cea6ad0255b8bda0cd3ea74441d47d8efc5eb5;p=gacela.git diff --git a/src/gacela.scm b/src/gacela.scm index 6be5ee8..1d963c6 100644 --- a/src/gacela.scm +++ b/src/gacela.scm @@ -16,14 +16,19 @@ ;;; Default values for Gacela + +(define *title* "Gacela") (define *width-screen* 640) (define *height-screen* 480) (define *bpp-screen* 32) (define *frames-per-second* 20) +(define *mode* '2d) ;;; SDL Initialization Subsystem + (define init-sdl #f) +(define sdl-on? #f) (define quit-sdl #f) (let ((initialized #f)) @@ -32,6 +37,10 @@ (cond ((not initialized) (SDL_Init SDL_INIT_EVERYTHING) (set! initialized #t)) (else initialized)))) + (set! sdl-on? + (lambda () + (if initialized #t #f))) + (set! quit-sdl (lambda () (SDL_Quit) @@ -39,40 +48,44 @@ ;;; Video Subsystem + (define init-video-mode #f) +(define video-mode-on? #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*)) +(let ((screen #f) (flags 0)) (set! init-video-mode - (lambda* (#:optional (width current-width) (height current-height) (bpp current-bpp)) + (lambda () (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)) + (let* ((props (get-game-properties)) + (width (assoc-ref props 'width)) (height (assoc-ref props 'height)) + (bpp (assoc-ref props 'bpp)) (title (assoc-ref props 'title)) + (mode (assoc-ref props 'mode)) + (info (SDL_GetVideoInfo))) + (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1) + (set! flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE + (if (= (assoc-ref info 'hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE) + (if (= (assoc-ref info 'blit_hw) 0) 0 SDL_HWACCEL))) + (set! screen (SDL_SetVideoMode width height bpp flags)) + (SDL_WM_SetCaption title "") + (init-gl) + (if (eq? mode '3d) (set-3d-mode) (set-2d-mode)))) (else #t)))) + (set! video-mode-on? + (lambda () (if screen #t #f))) + (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))) + (resize-screen-GL width height))))) (set! quit-video-mode - (lambda () (set! screen #f)))) + (lambda () + (SDL_FreeSurface screen) + (set! screen #f)))) (define (set-2d-mode) (cond ((not (3d-mode?)) @@ -88,16 +101,22 @@ (glDepthFunc GL_LEQUAL) (apply-mode-change)))) +(define (apply-mode-change) + (let* ((props (get-game-properties)) + (width (assoc-ref props 'width)) (height (assoc-ref props 'height))) + (resize-screen-GL width height))) + (define (3d-mode?) (eq? (assoc-ref (get-game-properties) 'mode) '3d)) -(define (init-GL) +(define (init-gl) (glShadeModel GL_SMOOTH) (glClearColor 0 0 0 0) ; (glClearDepth 1) ; (glDepthFunc GL_LEQUAL) -; (glEnable GL_BLEND) + (glEnable GL_BLEND) ; (glBlendFunc GL_SRC_ALPHA GL_ONE) + (glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA) (glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST) #t) @@ -130,24 +149,9 @@ (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) @@ -164,6 +168,7 @@ ;;; GaCeLa Functions + (define set-frames-per-second #f) (define init-frame-time #f) (define delay-frame #f) @@ -184,22 +189,32 @@ (SDL_Delay (- time-per-frame frame-time)))))))) -(define set-game-properties #f) +(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 +(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) (SDL_WM_SetCaption title ""))) +; (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)) - (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)))) + (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 @@ -220,25 +235,29 @@ (define game-running? #f) (define set-game-code #f) -(let ((running #f) (game-code #f) (mobs-function (lambda () #f))) +(let ((running #f) (game-code #f) (mobs '())) (set! game-loop (lambda () + (set! mobs (get-active-mobs)) (set! running #t) - (quit? #f) + (quit! #f) (do () ((quit?)) (init-frame-time) -; (check-connections) -; (eval-from-clients) + (check-connections) + (eval-from-clients) (process-events) (cond ((not (quit?)) - (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT)) - (to-origin) - (cond ((reload-mobs?) - (set! mobs-function (get-mobs-function)) - (mobs-reloaded))) - (if (procedure? game-code) (game-code)) - (mobs-function) - (SDL_GL_SwapBuffers) + (cond ((video-mode-on?) + (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT)) + (to-origin))) + (cond ((mobs-changed?) (set! mobs (get-active-mobs)))) + (if (procedure? game-code) + (catch #t + (lambda () (game-code)) + (lambda (key . args) #f))) + (cond ((video-mode-on?) + (run-mobs mobs) + (SDL_GL_SwapBuffers))) (delay-frame)))) (set! running #f))) @@ -249,12 +268,3 @@ (set! set-game-code (lambda (game-function) (set! game-code game-function)))) - -(define (quit-game) - (quit-audio) - (quit-video-mode) -; (quit-all-mobs) -; (kill-all-objects) -; (clear-events) - (quit-events) - (quit-sdl))