;;; Gacela, a GNU Guile extension for fast games development
-;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
+;;; Copyright (C) 2013 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
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-;;; Default values for Gacela
-(define *width-screen* 640)
-(define *height-screen* 480)
-(define *bpp-screen* 32)
-(define *frames-per-second* 20)
+(define-module (gacela gacela)
+ #:use-module (gacela system)
+ #:use-module (ice-9 threads)
+ #:use-module (srfi srfi-1)
+ #:export (make-world))
-;;; SDL Initialization Subsystem
-(let (initialized)
- (define (init-sdl)
- (cond ((null initialized) (set! initialized (SDL_Init SDL_INIT_EVERYTHING)))
- (#t initialized)))
+;;; Entities and components
- (define (quit-sdl)
- (set! initialized (SDL_Quit))))
+(define (make-world . entities)
+ (apply make-entity-set entities))
+(define entities-mutex (make-mutex))
+(define game-entities '())
+(define game-components '())
-;;; Video Subsystem
-(let (screen flags (current-width *width-screen*) (current-height *height-screen*) current-bpp)
- (defun init-video-mode (&key (width current-width) (height current-height) (bpp *bpp-screen*))
- (cond ((null screen)
- (init-sdl)
- (SDL_GL_SetAttribute SDL_GL_DOUBLEBUFFER 1)
- (setq flags (+ SDL_OPENGL SDL_GL_DOUBLEBUFFER SDL_HWPALETTE SDL_RESIZABLE
- (if (= (getf (SDL_GetVideoInfo) :hw_available) 0) SDL_SWSURFACE SDL_HWSURFACE)
- (if (= (getf (SDL_GetVideoInfo) :blit_hw) 0) 0 SDL_HWACCEL)))
- (setq screen (SDL_SetVideoMode width height bpp flags))
- (init-GL)
- (resize-screen-GL width height)
- (setq current-width width current-height height current-bpp bpp))
- (t t)))
+(define (entity . components)
+ (with-mutex entities-mutex
+ (let ((key (gensym)))
+ (set! game-entities
+ (acons key
+ (map (lambda (c) (list (get-component-type c) c)) components)
+ game-entities))
+ (set! game-components (register-components key components))
+ key)))
- (defun resize-screen (width height &optional (bpp current-bpp))
- (cond (screen (setq screen (SDL_SetVideoMode width height bpp flags))
- (resize-screen-GL width height)))
- (setq current-width width current-height height))
- (defun apply-mode-change ()
- (resize-screen-GL current-width current-height))
+(define* (register-components entity components #:optional (clist game-components))
+ (cond ((null? components) clist)
+ (else
+ (let* ((type (get-component-type (car components)))
+ (elist (assoc-ref clist type)))
+ (register-components entity (cdr components)
+ (assoc-set! clist type
+ (cond (elist
+ (lset-adjoin eq? elist entity))
+ (else
+ (list entity)))))))))
- (defun quit-video-mode ()
- (setq screen nil)))
-(defun set-2d-mode ()
- (cond ((not (3d-mode?))
- (init-video-mode)
- (glDisable GL_DEPTH_TEST)
- (apply-mode-change))))
+(define (get-entity key)
+ (with-mutex entities-mutex
+ (assoc key game-entities)))
-(defun set-3d-mode ()
- (cond ((3d-mode?)
- (init-video-mode)
- (glClearDepth 1)
- (glEnable GL_DEPTH_TEST)
- (glDepthFunc GL_LEQUAL)
- (apply-mode-change))))
-(defun 3d-mode? ()
- (eq (getf (get-game-properties) :mode) '3d))
-
-(defun 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)
-
-(defun init-lighting ()
- (init-video-mode)
- (glEnable GL_LIGHTING))
-
-(defun 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
- (t (let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
- (glOrtho -w w -h h 0 1))))
- (glMatrixMode GL_MODELVIEW)
- (glLoadIdentity)
- t))
-
-(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)
- (let ((loaded-image (IMG_Load image-file)))
- (cond ((= loaded-image 0) nil)
- (t (let ((optimized-image (SDL_DisplayFormat loaded-image)))
- (SDL_FreeSurface loaded-image)
- (cond ((= optimized-image 0) nil)
- ((null transparent-color) optimized-image)
- (t (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
-(let ((audio nil))
-
- (defun init-audio ()
- (cond ((null audio) (progn (init-sdl) (setq audio (Mix_OpenAudio 22050 MIX_DEFAULT_FORMAT 2 4096))))
- (t audio)))
-
- (defun quit-audio ()
- (setq audio (Mix_CloseAudio))))
-
-
-;;; Resources Manager
-(defstruct resource plist constructor destructor time)
-
-(defun make-resource-texture (&key filename min-filter mag-filter)
- `(:type texture :filename ,filename :min-filter ,min-filter :mag-filter ,mag-filter))
-
-(defun make-resource-font (&key filename encoding)
- `(:type font :filename ,filename :enconding ,encoding))
-
-(defun make-resource-sound (&key filename)
- `(:type sound :filename ,filename))
-
-(defun make-resource-music (&key filename)
- `(:type music :filename ,filename))
-
-(defmacro get-rtime (key)
- `(resource-time (gethash ,key resources-table)))
-
-(defmacro get-rplist (key)
- `(resource-plist (gethash ,key resources-table)))
-
-(defmacro get-rconstructor (key)
- `(resource-constructor (gethash ,key resources-table)))
-
-(defmacro get-rdestructor (key)
- `(resource-destructor (gethash ,key resources-table)))
-
-(let ((resources-table (make-hash-table :test 'equal))
- (expiration-time 50000))
-
- (defun set-expiration-time (new-time)
- (setq expiration-time new-time))
-
- (defun set-resource (key plist constructor destructor &key static)
- (expire-resources)
- (setf (gethash key resources-table)
- (make-resource :plist plist
- :constructor constructor
- :destructor destructor
- :time (if static t (SDL_GetTicks)))))
-
- (defun get-resource (key)
- (cond ((null (gethash key resources-table)) nil)
- (t (let ((time (get-rtime key)))
- (cond ((null time) (funcall (get-rconstructor key)))
- ((numberp time) (setf (get-rtime key) (SDL_GetTicks))))
- (get-rplist key)))))
-
- (defun free-resource (key)
- (funcall (get-rdestructor key))
- (setf (get-rtime key) nil))
-
- (defun expire-resource (key &optional (now (SDL_GetTicks)))
- (let ((time (get-rtime key)))
- (cond ((and (numberp time) (> (- now time) expiration-time)) (free-resource key)))))
-
- (defun expire-resources ()
- (maphash (lambda (key res) (expire-resource key)) resources-table))
-
- (defun free-all-resources ()
- (maphash (lambda (key res) (free-resource key)) resources-table)))
-
-
-;;; Connection with Gacela Clients
-(let (server-socket clients)
- (defun start-server (port)
- (cond ((null server-socket) (setq server-socket (si::socket port :server #'check-connections)))))
-
- (defun check-connections ()
- (cond ((and server-socket (listen server-socket)) (setq clients (cons (si::accept server-socket) clients)))))
-
- (defun eval-from-clients ()
- (labels ((eval-clients (cli-socks)
- (cond (cli-socks
- (let ((cli (car cli-socks)))
- (cond ((si::listen cli)
- (secure-block cli (eval (read cli)))
- (si::close cli)
- (eval-clients (cdr cli-socks)))
- (t
- (cons cli (eval-clients (cdr cli-socks))))))))))
- (setq clients (eval-clients clients))))
-
- (defun stop-server ()
- (cond (server-socket (si::close server-socket) (setq server-socket nil)))
- (cond (clients
- (labels ((close-clients (cli-socks)
- (si::close (car cli-socks))
- (close-clients (cdr cli-socks))))
- (close-clients clients))
- (setq clients nil)))))
-
-
-;;; GaCeLa Functions
-(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)))))))
-
-
-(let ((ptitle "") (pwidth *width-screen*) (pheight *height-screen*) (pbpp *bpp-screen*) (pfps *frames-per-second*) (pmode '2d))
- (defun set-game-properties (&key title width height bpp fps mode)
- (init-video-mode)
- (when title (progn (setq ptitle title) (SDL_WM_SetCaption title "")))
- (when (or width height bpp)
- (progn
- (when width (setq pwidth width))
- (when height (setq pheight height))
- (when bpp (setq pbpp bpp))
- (resize-screen pwidth pheight pbpp)))
- (when fps (progn (setq pfps fps) (set-frames-per-second fps)))
- (when mode (progn (setq pmode mode) (if (eq mode '3d) (set-3d-mode) (set-2d-mode))))
- (get-game-properties))
-
- (defun get-game-properties ()
- (list :title ptitle :width pwidth :height pheight :bpp pbpp :fps pfps :mode pmode)))
-
-
-(defmacro run-game (&body code)
- `(let ((game-function (lambda () ,@code)))
- (init-video-mode)
- (set-game-code game-function)
- (cond ((not (game-running?))
- (game-loop)))))
-
-(let (running game-code)
- (defun game-loop ()
- (setq running t)
- (do () ((quit?))
- (init-frame-time)
- (check-connections)
- (eval-from-clients)
- (process-events)
- (cond ((not (quit?))
- (glClear (+ GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT))
- (to-origin)
- (refresh-active-objects)
- (when (functionp game-code) (funcall game-code))
- (render-objects)
- (SDL_GL_SwapBuffers)
- (delay-frame))))
- (setq running nil))
-
- (defun game-running? ()
- running)
-
- (defun set-game-code (game-function)
- (setq game-code game-function)))
-
-(defun quit-game ()
- (free-all-resources)
- (quit-audio)
- (quit-video-mode)
-; (quit-all-mobs)
- (kill-all-objects)
-; (clear-events)
-; (quit-events)
- (quit-sdl))
+(export entity
+ get-entity)
projects / gacela.git / blobdiff