(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))))
-
;;; Audio Subsystem
+++ /dev/null
-;;; Gacela, a GNU Guile extension for fast games development
-;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
-;;;
-;;; This program is free software: you can redistribute it and/or modify
-;;; it under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation, either version 3 of the License, or
-;;; (at your option) any later version.
-;;;
-;;; This program is distributed in the hope that it will be useful,
-;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-(define-macro (with-color color . code)
- (cond (color
- `(let ((original-color (get-current-color))
- (result #f))
- (apply set-current-color ,color)
- (set! result (begin ,@code))
- (apply set-current-color original-color)
- result))
- (else `(begin ,@code))))
-
-(define-macro (progn-textures . code)
- `(let ((result #f))
- (init-video-mode)
- (glEnable GL_TEXTURE_2D)
- (set! result (begin ,@code))
- (glDisable GL_TEXTURE_2D)
- result))
-
-(define (draw . vertexes)
- (begin-draw (length vertexes))
- (draw-vertexes vertexes)
- (glEnd))
-
-(define (begin-draw number-of-points)
- (cond ((= number-of-points 2) (glBegin GL_LINES))
- ((= number-of-points 3) (glBegin GL_TRIANGLES))
- ((= number-of-points 4) (glBegin GL_QUADS))))
-
-(define (draw-vertexes vertexes)
- (cond ((not (null? vertexes))
- (draw-vertex (car vertexes))
- (draw-vertexes (cdr vertexes)))))
-
-(define* (draw-vertex vertex #:key texture-coord)
- (cond ((list? (car vertex))
- (with-color (car vertex)
- (apply simple-draw-vertex (cadr vertex))))
- (else
- (cond (texture-coord (apply glTexCoord2f texture-coord)))
- (apply simple-draw-vertex vertex))))
-
-(define* (simple-draw-vertex x y #:optional (z 0))
- (cond ((3d-mode?) (glVertex3f x y z))
- (else (glVertex2f x y))))
-
-(define (load-image filename)
- (init-sdl)
- (let ((image (IMG_Load filename)))
- (cond (image
- (SDL_DisplayFormatAlpha image)))))
-
-(define (load-image-for-texture filename)
- (init-sdl)
- (let ((image (load-image filename)))
- (cond (image
- (let* ((width (surface-w image)) (height (surface-h image))
- (power-2 (nearest-power-of-two (min width height)))
- (resized-image #f))
- (cond ((and (= width power-2) (= height power-2)) (values image width height))
- (else (set! resized-image (resize-surface image power-2 power-2))
- (if resized-image (values resized-image width height))))))
- (else
- (values #f 0 0)))))
-
-(define (resize-surface surface width height)
- (let ((old-width (surface-w surface)) (old-height (surface-h surface)))
- (cond ((and (= width old-width) (= height old-height)) surface)
- (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))
- (let* ((key (list filename min-filter mag-filter))
- (res (get-resource-from-cache key)))
- (cond (res res)
- (else
- (progn-textures
- (receive
- (image real-w real-h) (load-image-for-texture filename)
- (cond (image
- (let ((width (surface-w image)) (height (surface-h image))
- (byteorder (if (= SDL_BYTEORDER SDL_LIL_ENDIAN)
- (if (= (surface-format-BytesPerPixel image) 3) GL_BGR GL_BGRA)
- (if (= (surface-format-BytesPerPixel image) 3) GL_RGB GL_RGBA)))
- (texture (car (glGenTextures 1))))
-
- (glBindTexture GL_TEXTURE_2D texture)
- (glTexImage2D GL_TEXTURE_2D 0 4 width height 0 byteorder GL_UNSIGNED_BYTE (surface-pixels image))
- (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
- (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
- (set-texture-size! texture real-w real-h)
- (insert-resource-into-cache key texture)
- texture)))))))))
-
-(define* (draw-image filename #:optional (zoom 1))
- (let ((texture (load-texture filename)))
- (cond (texture (draw-texture texture zoom)))))
-
-(define* (draw-texture texture #:optional (zoom 1))
- (cond (texture
- (let ((width (texture-w texture))
- (height (texture-h texture)))
- (draw-rectangle (* zoom width) (* zoom height) #:texture texture)))))
-
-(define* (draw-line length #:optional color)
- (let ((l (/ length 2)))
- (cond (color
- (with-color color (draw (list 0 l) (list 0 (- l)))))
- (else
- (draw (list 0 l) (list 0 (- l)))))))
-
-(define* (draw-quad v1 v2 v3 v4 #:key texture color)
- (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))
- (glEnd)))
- (color
- (with-color color (draw v1 v2 v3 v4)))
- (else
- (draw v1 v2 v3 v4))))
-
-(define* (draw-rectangle width height #:key texture color)
- (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
- #:color color)))
-
-(define* (draw-square #:key (size 1) texture color)
- (draw-rectangle size size #:texture texture #:color color))
-
-(define* (draw-cube #:key (size 1)
- texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6
- color color-1 color-2 color-3 color-4 color-5 color-6)
- (let ((-size (- size)))
- (progn-textures
- (glNormal3f 0 0 1)
- (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) #:texture (or texture-1 texture) #:color (or color-1 color))
- (glNormal3f 0 0 -1)
- (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) #:texture (or texture-2 texture) #:color (or color-2 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-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))
- (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))
- (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)))))
-
-(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* (translate x y #:optional (z 0))
- (glTranslatef x y z))
-
-(define* (rotate #:rest rot)
- (cond ((3d-mode?) (apply 3d-rotate rot))
- (else (apply 2d-rotate rot))))
-
-(define (3d-rotate xrot yrot zrot)
- (glRotatef xrot 1 0 0)
- (glRotatef yrot 0 1 0)
- (glRotatef zrot 0 0 1))
-
-(define (2d-rotate rot)
- (glRotatef rot 0 0 1))
-
-(define (to-origin)
- (glLoadIdentity)
- (cond ((3d-mode?) (camera-look))))
-
-(define set-camera #f)
-(define camera-look #f)
-
-(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)))))
-
- (set! camera-look
- (lambda ()
- (apply gluLookAt (append camera-eye camera-center camera-up)))))
+++ /dev/null
-;;; Gacela, a GNU Guile extension for fast games development
-;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
-;;;
-;;; This program is free software: you can redistribute it and/or modify
-;;; it under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation, either version 3 of the License, or
-;;; (at your option) any later version.
-;;;
-;;; This program is distributed in the hope that it will be useful,
-;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-(define-module (gacela ttf)
- #:use-module (gacela ftgl)
- #:use-module (ice-9 optargs)
- #:export (load-font
- render-text))
-
-(define* (load-font font-file #:key (size 40) (encoding ft_encoding_unicode))
- (let* ((key (list font-file))
- (font (get-resource-from-cache key)))
- (cond ((not font)
- (set! font (ftglCreateTextureFont font-file))
- (insert-resource-into-cache key font)))
- (ftglSetFontFaceSize font size 72)
- (ftglSetFontCharMap font encoding)
- font))
-
-(define* (render-text text font #:key (size #f))
- (cond (size (ftglSetFontFaceSize font size 72)))
- (ftglRenderFont font text FTGL_RENDER_ALL))
--- /dev/null
+;;; Gacela, a GNU Guile extension for fast games development
+;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
+;;;
+;;; This program is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (gacela video)
+ #:use-module (gacela sdl)
+ #:use-module (gacela gl)
+ #:use-module (gacela ftgl)
+ #:use-module (ice-9 optargs)
+ #:use-module (ice-9 receive)
+ #:export (with-color
+ progn-textures
+ draw
+ load-image
+ resize-surface
+ load-texture
+ draw-texture
+ draw-line
+ draw-quad
+ draw-rectangle
+ draw-square
+ draw-cube
+ add-light
+ translate
+ rotate
+ to-origin
+ set-camera
+ camera-look
+ load-font
+ render-text))
+
+
+(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-macro (with-color color . code)
+ (cond (color
+ `(let ((original-color (get-current-color))
+ (result #f))
+ (apply set-current-color ,color)
+ (set! result (begin ,@code))
+ (apply set-current-color original-color)
+ result))
+ (else `(begin ,@code))))
+
+(define-macro (progn-textures . code)
+ `(let ((result #f))
+ (glEnable GL_TEXTURE_2D)
+ (set! result (begin ,@code))
+ (glDisable GL_TEXTURE_2D)
+ result))
+
+(define (draw . vertexes)
+ (begin-draw (length vertexes))
+ (draw-vertexes vertexes)
+ (glEnd))
+
+(define (begin-draw number-of-points)
+ (cond ((= number-of-points 2) (glBegin GL_LINES))
+ ((= number-of-points 3) (glBegin GL_TRIANGLES))
+ ((= number-of-points 4) (glBegin GL_QUADS))))
+
+(define (draw-vertexes vertexes)
+ (cond ((not (null? vertexes))
+ (draw-vertex (car vertexes))
+ (draw-vertexes (cdr vertexes)))))
+
+(define* (draw-vertex vertex #:key texture-coord)
+ (cond ((list? (car vertex))
+ (with-color (car vertex)
+ (apply simple-draw-vertex (cadr vertex))))
+ (else
+ (cond (texture-coord (apply glTexCoord2f texture-coord)))
+ (apply simple-draw-vertex vertex))))
+
+(define* (simple-draw-vertex x y #:optional (z 0))
+ (cond ((3d-mode?) (glVertex3f x y z))
+ (else (glVertex2f x y))))
+
+(define (load-image filename)
+ (let ((image (IMG_Load filename)))
+ (cond (image
+ (SDL_DisplayFormatAlpha image)))))
+
+(define (load-image-for-texture filename)
+ (init-sdl)
+ (let ((image (load-image filename)))
+ (cond (image
+ (let* ((width (surface-w image)) (height (surface-h image))
+ (power-2 (nearest-power-of-two (min width height)))
+ (resized-image #f))
+ (cond ((and (= width power-2) (= height power-2)) (values image width height))
+ (else (set! resized-image (resize-surface image power-2 power-2))
+ (if resized-image (values resized-image width height))))))
+ (else
+ (values #f 0 0)))))
+
+(define (resize-surface surface width height)
+ (let ((old-width (surface-w surface)) (old-height (surface-h surface)))
+ (cond ((and (= width old-width) (= height old-height)) surface)
+ (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))
+ (let* ((key (list filename min-filter mag-filter))
+ (res (get-resource-from-cache key)))
+ (cond (res res)
+ (else
+ (progn-textures
+ (receive
+ (image real-w real-h) (load-image-for-texture filename)
+ (cond (image
+ (let ((width (surface-w image)) (height (surface-h image))
+ (byteorder (if (= SDL_BYTEORDER SDL_LIL_ENDIAN)
+ (if (= (surface-format-BytesPerPixel image) 3) GL_BGR GL_BGRA)
+ (if (= (surface-format-BytesPerPixel image) 3) GL_RGB GL_RGBA)))
+ (texture (car (glGenTextures 1))))
+
+ (glBindTexture GL_TEXTURE_2D texture)
+ (glTexImage2D GL_TEXTURE_2D 0 4 width height 0 byteorder GL_UNSIGNED_BYTE (surface-pixels image))
+ (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
+ (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
+ (set-texture-size! texture real-w real-h)
+ (insert-resource-into-cache key texture)
+ texture)))))))))
+
+;; (define* (draw-image filename #:optional (zoom 1))
+;; (let ((texture (load-texture filename)))
+;; (cond (texture (draw-texture texture zoom)))))
+
+(define* (draw-texture texture #:optional (zoom 1))
+ (cond (texture
+ (let ((width (texture-w texture))
+ (height (texture-h texture)))
+ (draw-rectangle (* zoom width) (* zoom height) #:texture texture)))))
+
+(define* (draw-line length #:optional color)
+ (let ((l (/ length 2)))
+ (cond (color
+ (with-color color (draw (list 0 l) (list 0 (- l)))))
+ (else
+ (draw (list 0 l) (list 0 (- l)))))))
+
+(define* (draw-quad v1 v2 v3 v4 #:key texture color)
+ (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))
+ (glEnd)))
+ (color
+ (with-color color (draw v1 v2 v3 v4)))
+ (else
+ (draw v1 v2 v3 v4))))
+
+(define* (draw-rectangle width height #:key texture color)
+ (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
+ #:color color)))
+
+(define* (draw-square #:key (size 1) texture color)
+ (draw-rectangle size size #:texture texture #:color color))
+
+(define* (draw-cube #:key (size 1)
+ texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6
+ color color-1 color-2 color-3 color-4 color-5 color-6)
+ (let ((-size (- size)))
+ (progn-textures
+ (glNormal3f 0 0 1)
+ (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) #:texture (or texture-1 texture) #:color (or color-1 color))
+ (glNormal3f 0 0 -1)
+ (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) #:texture (or texture-2 texture) #:color (or color-2 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-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))
+ (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))
+ (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)))))
+
+(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* (translate x y #:optional (z 0))
+ (glTranslatef x y z))
+
+(define* (rotate #:rest rot)
+ (cond ((3d-mode?) (apply 3d-rotate rot))
+ (else (apply 2d-rotate rot))))
+
+(define (3d-rotate xrot yrot zrot)
+ (glRotatef xrot 1 0 0)
+ (glRotatef yrot 0 1 0)
+ (glRotatef zrot 0 0 1))
+
+(define (2d-rotate rot)
+ (glRotatef rot 0 0 1))
+
+(define (to-origin)
+ (glLoadIdentity)
+ (cond ((3d-mode?) (camera-look))))
+
+(define set-camera #f)
+(define camera-look #f)
+
+(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)))))
+
+ (set! camera-look
+ (lambda ()
+ (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* ((key (list font-file))
+ (font (get-resource-from-cache key)))
+ (cond ((not font)
+ (set! font (ftglCreateTextureFont font-file))
+ (insert-resource-into-cache key font)))
+ (ftglSetFontFaceSize font size 72)
+ (ftglSetFontCharMap font encoding)
+ font))
+
+(define* (render-text text font #:key (size #f))
+ (cond (size (ftglSetFontFaceSize font size 72)))
+ (ftglRenderFont font text FTGL_RENDER_ALL))
projects / gacela.git / commitdiff