-;;; Gacela, a GNU Common Lisp 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/>.
-
-
-(eval-when (compile load eval)
- (when (not (find-package 'gacela)) (make-package 'gacela :nicknames '(gg) :use '(lisp)))
- (in-package 'gacela :nicknames '(gg) :use '(lisp)))
-
-
-;;; Sound
-
-(defun load-sound (filename &key static)
- (let ((key (make-resource-sound :filename filename)))
- (cond ((get-resource key) key)
- (t (true-load-sound filename static)))))
-
-(defun true-load-sound (filename static)
- (init-audio)
- (let ((key (make-resource-sound :filename filename))
- (sound (Mix_LoadWAV filename)))
- (cond ((/= sound 0)
- (set-resource key
- `(:id-sound ,sound)
- (lambda () (true-load-sound filename static))
- (lambda () (Mix_FreeChunk sound))
- :static static)
- key))))
-
-(defun play-sound (sound &optional (loops 0))
- (let ((id-sound (getf (get-resource sound) :id-sound)))
- (/= (Mix_PlayChannel -1 id-sound loops) -1)))
-
-
-;;; Music
-
-(defun load-music (filename &key static)
- (let ((key (make-resource-music :filename filename)))
- (cond ((get-resource key) key)
- (t (true-load-music filename static)))))
-
-(defun true-load-music (filename static)
- (init-audio)
- (let ((key (make-resource-music :filename filename))
- (music (Mix_LoadMUS filename)))
- (cond ((/= music 0)
- (set-resource key
- `(:id-music ,music)
- (lambda () (true-load-music filename static))
- (lambda () (Mix_FreeMusic music))
- :static static)
- key))))
-
-(defun playing-music? ()
- (/= (Mix_PlayingMusic) 0))
-
-(defun paused-music? ()
- (/= (Mix_PausedMusic) 0))
-
-(defun play-music (music &optional (loops -1))
- (cond ((not (playing-music?))
- (let ((id-music (getf (get-resource music) :id-music)))
- (/= (Mix_PlayMusic id-music loops) -1)))))
-
-(defun pause-music ()
- (cond ((and (playing-music?) (not (paused-music?)))
- (Mix_PauseMusic)
- t)))
-
-(defun resume-music ()
- (cond ((and (playing-music?) (paused-music?))
- (Mix_ResumeMusic)
- t)))
-
-(defun halt-music ()
- (cond ((playing-music?)
- (Mix_HaltMusic)
- t)))