X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fvideo.scm;h=466438f1db06b050740e6c0addb08d2228fba193;hb=0f5f0a460230c18782cc8e70fcd6fd0991cd09a1;hp=e0aa94ffa561ab62865661c5de8e2abef6ba0670;hpb=3c7d10914d0db2a4b9336ee210e84258e1580409;p=gacela.git diff --git a/src/video.scm b/src/video.scm index e0aa94f..466438f 100644 --- a/src/video.scm +++ b/src/video.scm @@ -20,20 +20,25 @@ #:use-module (gacela gl) #:use-module (gacela ftgl) #:use-module (gacela math) + #:use-module (gacela utils) #:use-module (ice-9 optargs) #:use-module (ice-9 receive) #:export (init-video get-screen-height get-screen-width get-screen-bpp + set-screen-bpp! resize-screen quit-video clear-screen flip-screen + set-screen-title! + get-screen-title set-2d-mode set-3d-mode 3d-mode? - set-frames-per-second + get-frames-per-second + set-frames-per-second! init-frame-time get-frame-time delay-frame @@ -43,6 +48,8 @@ progn-textures draw load-texture + load-texture-without-cache + get-texture-properties draw-texture draw-line draw-quad @@ -56,57 +63,53 @@ set-camera camera-look load-font - render-text)) + load-font-without-texture + render-text) + #:export-syntax (glmatrix-block)) + ;;; Screen -(define init-video #f) -(define get-screen-height #f) -(define get-screen-width #f) -(define get-screen-bpp #f) -(define resize-screen #f) -(define quit-video #f) - -(let ((screen #f) (flags 0)) - (set! init-video - (lambda* (width height bpp #:key (mode '2d) (title "")) - (cond ((not screen) - (SDL_Init SDL_INIT_VIDEO) - (let ((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))))))) - - (set! get-screen-height - (lambda () - (surface-h screen))) - - (set! get-screen-width - (lambda () - (surface-w screen))) - - (set! get-screen-bpp - (lambda () - (surface-format-BytesPerPixel screen))) - - (set! resize-screen - (lambda (width height) - (cond (screen - (set! screen (SDL_SetVideoMode width height (get-screen-bpp) flags)) - (resize-screen-GL width height))))) - - (set! quit-video - (lambda () - (cond (screen - (SDL_FreeSurface screen) - (set! screen #f) - (SDL_Quit)))))) +(define screen #f) +(define flags 0) + +(define* (init-video width height bpp #:key (mode '2d) (title "") (fps 20)) + (SDL_Init SDL_INIT_VIDEO) + (let ((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)) + (set-screen-title! title) + (set-frames-per-second! fps) + (init-gl) + (if (eq? mode '3d) (set-3d-mode) (set-2d-mode)))) + +(define (get-screen-height) + (surface-h screen)) + +(define (get-screen-width) + (surface-w screen)) + +(define (get-screen-bpp) + (* (surface-format-BytesPerPixel screen) 8)) + +(define (set-screen-bpp! bpp) + (cond (screen + (set! screen (SDL_SetVideoMode (get-screen-width) (get-screen-height) bpp flags))))) + +(define (resize-screen width height) + (cond (screen + (set! screen (SDL_SetVideoMode width height (get-screen-bpp) flags)) + (resize-screen-GL width height)))) + +(define (quit-video) + (cond (screen + (SDL_FreeSurface screen) + (set! screen #f) + (SDL_Quit)))) (define (clear-screen) (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))) @@ -115,28 +118,32 @@ (SDL_GL_SwapBuffers)) -(define set-2d-mode #f) -(define set-3d-mode #f) -(define 3d-mode? #f) +(define screen-title "") + +(define (set-screen-title! title) + (set! screen-title title) + (SDL_WM_SetCaption title "")) + +(define (get-screen-title) + screen-title) + -(let ((mode '2d)) - (set! set-2d-mode - (lambda () - (set! mode '2d) - (glDisable GL_DEPTH_TEST) - (resize-screen-GL (get-screen-width) (get-screen-height)))) +(define mode '2d) - (set! set-3d-mode - (lambda () - (set! mode '3d) - (glClearDepth 1) - (glEnable GL_DEPTH_TEST) - (glDepthFunc GL_LEQUAL) - (resize-screen-GL (get-screen-width) (get-screen-height)))) +(define (set-2d-mode) + (set! mode '2d) + (glDisable GL_DEPTH_TEST) + (resize-screen-GL (get-screen-width) (get-screen-height))) - (set! 3d-mode? - (lambda () - (eq? mode '3d)))) +(define (set-3d-mode) + (set! mode '3d) + (glClearDepth 1) + (glEnable GL_DEPTH_TEST) + (glDepthFunc GL_LEQUAL) + (resize-screen-GL (get-screen-width) (get-screen-height))) + +(define (3d-mode?) + (eq? mode '3d)) (define (init-gl) @@ -162,45 +169,39 @@ ;;; Frames per second -(define set-frames-per-second #f) -(define init-frame-time #f) -(define get-frame-time #f) -(define delay-frame #f) +(define time 0) +(define frames-per-second 20) +(define time-per-frame 50) ;in ms + +(define (get-frames-per-second) + frames-per-second) -(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)))) +(define (set-frames-per-second! fps) + (set! frames-per-second fps) + (set! time-per-frame (/ 1000.0 fps))) - (set! init-frame-time - (lambda () - (set! time (SDL_GetTicks)))) +(define (init-frame-time) + (set! time (SDL_GetTicks))) - (set! get-frame-time - (lambda () - time)) +(define (get-frame-time) + time) - (set! delay-frame - (lambda () - (let ((frame-time (- (SDL_GetTicks) time))) - (cond ((< frame-time time-per-frame) - (SDL_Delay (- time-per-frame frame-time)))))))) +(define (delay-frame) + (let ((frame-time (- (SDL_GetTicks) time))) + (cond ((< frame-time time-per-frame) + (SDL_Delay (- time-per-frame frame-time)))))) ;;; Drawing -(define get-current-color #f) -(define set-current-color #f) +(define current-color '(1 1 1 1)) -(let ((current-color '(1 1 1 1))) - (set! get-current-color - (lambda () - current-color)) +(define (get-current-color) + 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* (set-current-color red green blue #:optional (alpha 1)) + (set! current-color (list red green blue alpha)) + (glColor4f red green blue alpha)) (define-macro (with-color color . code) (cond (color @@ -269,7 +270,7 @@ (else (let ((zoomx (/ (+ width 0.5) old-width)) (zoomy (/ (+ height 0.5) old-height))) (zoomSurface surface zoomx zoomy 0)))))) -(define* (load-texture filename #:key (min-filter GL_LINEAR) (mag-filter GL_LINEAR)) +(define* (load-texture-without-cache filename #:key (min-filter GL_LINEAR) (mag-filter GL_LINEAR)) (progn-textures (receive (image real-w real-h) (load-image-for-texture filename) @@ -287,11 +288,19 @@ (set-texture-size! texture real-w real-h) texture)))))) -(define* (draw-texture texture #:optional (zoom 1)) +(define load-texture (use-cache-with load-texture-without-cache)) + +(define (get-texture-properties texture) + `((width . ,(texture-w texture)) (height . ,(texture-h texture)))) + +(define* (draw-texture texture #:key (zoom 1) (sprite '((0 0) (1 1)))) (cond (texture (let ((width (texture-w texture)) (height (texture-h texture))) - (draw-rectangle (* zoom width) (* zoom height) #:texture texture))))) + (draw-rectangle (* zoom width (- (caadr sprite) (caar sprite))) + (* zoom height (- (cadadr sprite) (cadar sprite))) + #:texture texture + #:texture-coord sprite))))) (define* (draw-line length #:optional color) (let ((l (/ length 2))) @@ -300,28 +309,29 @@ (else (draw (list 0 l) (list 0 (- l))))))) -(define* (draw-quad v1 v2 v3 v4 #:key texture color) +(define* (draw-quad v1 v2 v3 v4 #:key texture color (texture-coord '((0 0) (1 1)))) (cond (texture (progn-textures (glBindTexture GL_TEXTURE_2D texture) (begin-draw 4) - (draw-vertex v1 #:texture-coord '(0 0)) - (draw-vertex v2 #:texture-coord '(1 0)) - (draw-vertex v3 #:texture-coord '(1 1)) - (draw-vertex v4 #:texture-coord '(0 1)) + (draw-vertex v1 #:texture-coord (car texture-coord)) + (draw-vertex v2 #:texture-coord (list (caadr texture-coord) (cadar texture-coord))) + (draw-vertex v3 #:texture-coord (cadr texture-coord)) + (draw-vertex v4 #:texture-coord (list (caar texture-coord) (cadadr texture-coord))) (glEnd))) (color (with-color color (draw v1 v2 v3 v4))) (else (draw v1 v2 v3 v4)))) -(define* (draw-rectangle width height #:key texture color) +(define* (draw-rectangle width height #:key texture color texture-coord) (let ((w (/ width 2)) (h (/ height 2))) (draw-quad (list (- w) h 0) (list w h 0) (list w (- h) 0) (list (- w) (- h) 0) #:texture texture + #:texture-coord texture-coord #:color color))) (define* (draw-square #:key (size 1) texture color) @@ -339,11 +349,11 @@ (glNormal3f 0 1 0) (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) #:texture (or texture-3 texture) #:color (or color-3 color)) (glNormal3f 0 -1 0) - (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture (or texture-4 texture) #:color (or color-4 color)) + (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) #:texture (or texture-4 texture) #:color (or color-4 color)) (glNormal3f 1 0 0) - (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture (or texture-5 texture) #:color (or color-5 color)) + (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) #:texture (or texture-5 texture) #:color (or color-5 color)) (glNormal3f -1 0 0) - (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture (or texture-6 texture) #:color (or color-6 color))))) + (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) #:texture (or texture-6 texture) #:color (or color-6 color))))) (define* (translate x y #:optional (z 0)) (glTranslatef x y z)) @@ -366,43 +376,54 @@ (glLoadIdentity) (cond ((3d-mode?) (camera-look)))) +(define-macro (glmatrix-block . code) + `(let ((result #f)) + (glPushMatrix) + (set! result (begin ,@code)) + (glPopMatrix) + result)) + ;;; Lights -(define* (add-light #:key light position ambient (id GL_LIGHT1) (turn-on t)) - (init-lighting) - (and light (glLightfv id GL_DIFFUSE (first light) (second light) (third light) (fourth light))) - (and light position (glLightfv GL_POSITION (first position) (second position) (third position) (fourth position))) - (and ambient (glLightfv id GL_AMBIENT (first ambient) (second ambient) (third ambient) (fourth ambient))) - (and turn-on (glEnable id)) - id) +;; (define* (add-light #:key light position ambient (id GL_LIGHT1) (turn-on t)) +;; (init-lighting) +;; (and light (glLightfv id GL_DIFFUSE (car light) (cadr light) (caddr light) (cadddr light))) +;; (and light position (glLightfv GL_POSITION (car position) (cadr position) (caddr position) (cadddr position))) +;; (and ambient (glLightfv id GL_AMBIENT (car ambient) (cadr ambient) (caddr ambient) (cadddr ambient))) +;; (and turn-on (glEnable id)) +;; id) ;;; Camera -(define set-camera #f) -(define camera-look #f) +(define camera-eye '(0 0 0)) +(define camera-center '(0 0 -100)) +(define camera-up '(0 1 0)) -(let ((camera-eye '(0 0 0)) (camera-center '(0 0 -100)) (camera-up '(0 1 0))) - (set! set-camera - (lambda* (#:key eye center up) - (cond (eye (set! camera-eye eye))) - (cond (center (set! camera-center center))) - (cond (up (set! camera-up up))))) +(define* (set-camera #:key eye center up) + (cond (eye (set! camera-eye eye))) + (cond (center (set! camera-center center))) + (cond (up (set! camera-up up)))) - (set! camera-look - (lambda () - (apply gluLookAt (append camera-eye camera-center camera-up))))) +(define (camera-look) + (apply gluLookAt (append camera-eye camera-center camera-up))) ;;; Text and fonts -(define* (load-font font-file #:key (size 40) (encoding ft_encoding_unicode)) - (let ((font (ftglCreateTextureFont font-file))) +(define* (load-font-without-cache font-file #:key (size 40) (encoding ft_encoding_unicode)) + (let ((font (ftglCreateTextureFont font-file size))) (ftglSetFontFaceSize font size 72) (ftglSetFontCharMap font encoding) font)) +(define load-font (use-cache-with load-font-without-cache)) + (define* (render-text text font #:key (size #f)) - (cond (size (ftglSetFontFaceSize font size 72))) + (cond (size + (cond ((not (= (ftglGetFontFaceSize font) size)) + (ftglSetFontFaceSize font size 72)))) + ((not (= (ftglGetFontFaceSize font) (font-size font))) + (ftglSetFontFaceSize font (font-size font) 72))) (ftglRenderFont font text FTGL_RENDER_ALL))