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;;; Lisparuga
;;; Copyright © 2016 David Thompson <davet@gnu.org>
;;;
;;; Lisparuga 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.
;;;
;;; Lisparuga 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 Lisparuga. If not, see <http://www.gnu.org/licenses/>.
(define-module (lisparuga audio)
#:use-module (srfi srfi-1)
#:use-module (sly actor)
#:use-module (sly audio)
#:use-module (sly utils)
#:use-module (lisparuga config)
#:use-module (lisparuga enemies)
#:use-module (lisparuga explosions)
#:use-module (lisparuga player)
#:use-module (lisparuga world)
#:export (load-music*
load-sample*
loop-music
enemy-hit-sound
player-shoot-sound
player-death-sound
explosion-sound
play-sound-effects))
(define load-music*
(memoize
(lambda (file)
(load-music (string-append %datadir "/music/" file)))))
(define (loop-music music)
(play-music music #:loop? #t))
(define (load-sample* file)
(load-sample (string-append %datadir "/sounds/" file)))
(define (enemy-hit-sound world time)
(and (any (lambda (enemy)
(let ((hit-time (enemy-last-hit-time (actor-ref enemy))))
(and hit-time (= time hit-time))))
(world-enemies world))
'enemy-hit))
(define (player-shoot-sound world time)
(and (zero? (modulo time 5))
(player-shooting? (actor-ref (world-player world)))
'player-shoot))
(define (player-death-sound world time)
(and (let ((death-time (player-last-death-time
(actor-ref (world-player world)))))
(and death-time (= time death-time)))
'player-death))
(define (explosion-sound world time)
(and (any (lambda (explosion)
(let ((explode-time (explosion-time explosion)))
(= time explode-time)))
(world-explosions world))
'explosion))
(define (play-sound-effects sounds)
(for-each play-sample sounds))
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