(defvar *height-screen* 480)
(defvar *bpp-screen* 32)
(defvar *title-screen* "Happy Hacking!!")
-(defvar *gacela-freq* 30)
+(defvar *frames-per-second* 20)
(defvar *transparent-color* '(:red 0 :green 0 :blue 0))
(defvar *background-color* '(:red 0 :green 0 :blue 0))
-(defvar *zoom* -10)
;;; SDL Initialization Subsystem
(let (initialized)
(defun init-GL ()
+ (2d-mode)
(glShadeModel GL_SMOOTH)
(glClearColor 0 0 0 0)
(glClearDepth 1)
- (glEnable GL_DEPTH_TEST)
(glDepthFunc GL_LEQUAL)
; (glEnable GL_BLEND)
; (glBlendFunc GL_SRC_ALPHA GL_ONE)
(glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST)
t)
+(defmacro progn-textures (&body code)
+ `(let (values)
+ (init-video-mode)
+ (glEnable GL_TEXTURE_2D)
+ (setq values (multiple-value-list (progn ,@code)))
+ (glDisable GL_TEXTURE_2D)
+ (apply #'values values)))
+
(defun init-textures ()
(init-video-mode)
(glEnable GL_TEXTURE_2D))
(defun resize-screen-GL (width height)
(let ((ratio (if (= height 0) width (/ width height))))
- (glViewPort 0 0 width height)
+; (glViewPort 0 0 width height)
(glMatrixMode GL_PROJECTION)
(glLoadIdentity)
(let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
(glOrtho -w w -h h 0 1))
- (gluPerspective 45 ratio 0.1 100)
+; (gluPerspective 45 ratio 0.1 100)
(glMatrixMode GL_MODELVIEW)
(glLoadIdentity)
t))
-(defun copy-surface (source)
- (cond ((surface-p source)
- (let ((new-surface
- (make-surface :address (copy-SDL_Surface (surface-address source))
- :clip-w (surface-clip-w source)
- :clip-h (surface-clip-h source)
- :shape (surface-shape source))))
- (set-resource 'image new-surface (gentemp))
- new-surface))))
+(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)
(flip))
-(defun filled-circle (radius &optional (color '(:red 255 :green 255 :blue 255)))
- (init-video-mode)
- (let ((new-surface (create-surface (1+ (* radius 2)) (1+ (* radius 2)))))
- (sge_FilledCircle (surface-address new-surface)
- radius radius radius
- (getf color :red)
- (getf color :green)
- (getf color :blue))
- (setf (surface-shape new-surface)
- `((,radius ,radius) ,radius))
- new-surface))
-
-
-(defun filled-rect (width height &optional (color '(:red 255 :green 255 :blue 255)))
- (init-video-mode)
- (let ((new-surface (create-surface width height)))
- (sge_FilledRect (surface-address new-surface)
- 0 0 width height
- (getf color :red)
- (getf color :green)
- (getf color :blue))
- (setf (surface-shape new-surface)
- (make-rectangle 0 0 width height))
- new-surface))
-
-
;;; TTF Subsystem
(defstruct font address)
;;; Resources Manager
-(defstruct resource address free-function object)
+(defstruct resource plist free-function time)
+
+(defun make-texture (&key filename min-filter mag-filter)
+ `(:type texture :filename ,filename :min-filter ,min-filter :mag-filter ,mag-filter))
(let ((resources-table (make-hash-table :test 'equal)))
- (defun set-resource (type object &rest key)
- (let ((res
- (cond ((surface-p object)
- (make-resource :address (surface-address object)
- :free-function #'SDL_FreeSurface
- :object object))
- ((font-p object)
- (make-resource :address (font-address object)
- :free-function #'TTF_CloseFont
- :object object))
- ((cp-space-p object)
- (make-resource :address (cp-space-address object)
- :free-function #'cpSpaceFree
- :object object))
- ((cp-body-p object)
- (make-resource :address (cp-body-address object)
- :free-function #'cpBodyFree
- :object object))
- ((cp-shape-p object)
- (make-resource :address (cp-shape-address object)
- :free-function #'cpShapeFree
- :object object))
- (t nil))))
- (cond (res (setf (gethash `(,type ,@key) resources-table) res)))))
-
- (defun get-resource (type &rest key)
- (let ((resource (gethash `(,type ,@key) resources-table)))
+ (defun set-resource (key plist free-function &key static)
+ (setf (gethash key resources-table)
+ (make-resource :plist plist
+ :free-function free-function
+ :time (if static -1 (SDL_GetTicks)))))
+
+ (defun get-resource (key)
+ (let ((resource (gethash key resources-table)))
(cond ((null resource) nil)
- (t (resource-object resource)))))
+ (t (cond ((/= (resource-time resource) -1)
+ (setf (resource-time resource) (SDL_GetTicks))
+ (setf (gethash key resources-table) resource)))
+ (resource-plist resource)))))
(defun free-all-resources ()
(maphash (lambda (key res) (funcall (resource-free-function res) (resource-address res)))
;;; GaCeLa Functions
-;(defun game-loop (code)
-; (process-events)
-; (cond ((quit?) nil)
-; (t
-; (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
-; (glLoadIdentity)
-; (translate 0 0 *zoom*)
-; (funcall code)
-; (SDL_GL_SwapBuffers)
-; (SDL_Delay (- *gacela-freq* (rem (SDL_GetTicks) *gacela-freq*)))
-; (game-loop code))))
-
(let (commands)
(defun prog-command (command)
(setq commands (cons command commands)))
(eval (read-from-string (concatenate 'string "(progn " (car comlst) ")")))))))
(run-com running)))))))
+(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)))))))
+
+
(defmacro run-game (title &body code)
`(progn
(init-video-mode)
(SDL_WM_SetCaption ,title "")
+ (init-frame-time)
(process-events)
(do () ((quit?))
(glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
(glLoadIdentity)
- (translate 0 0 *zoom*)
,@code
(SDL_GL_SwapBuffers)
- (SDL_Delay (- *gacela-freq* (rem (SDL_GetTicks) *gacela-freq*)))
+ (delay-frame)
+ (init-frame-time)
(process-events)
(setq running nil))))
-;(defun run-game ()
-; (init-video-mode)
-; (SDL_WM_SetCaption *title-screen* "")
-; (refresh-active-procs)
-; (enjoy!)
-; (do () ((quit?))
-; (process-events)
-; (logic-procs)
-; (motion-procs)
-; (refresh-active-procs)
-; (refresh-screen)
-; (SDL_Delay (- *gacela-freq* (rem (SDL_GetTicks) *gacela-freq*)))))
-
(defun quit-game ()
; (free-all-resources)
; (quit-audio)
projects / gacela.git / blobdiff