# SoundManager

This is the simple sound manager that's used in bartbes and Nevon's game Volley Brawl.

    Copyright (c) 2011, Bart van Strien and Tommy Brunn
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in the
          documentation and/or other materials provided with the distribution.
        * Neither the name of the <organization> nor the
          names of its contributors may be used to endorse or promote products
          derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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    soundmanager = {}
    soundmanager.queue = {}
    soundmanager.playlist = {}
    soundmanager.currentsong = -1

    local function shuffle(a, b)
       return math.random(1, 2) == 1
    end

    --do the magic
    function soundmanager:play(sndData)
       --make a source out of the sound data
       local src = love.audio.newSource(sndData, "static")
       --put it in the queue
       table.insert(self.queue, src)
       --and play it
       love.audio.play(src)
    end

    --do the music magic
    function soundmanager:playMusic(first, ...)
       --stop all currently playing music
       for i, v in ipairs(self.playlist) do
          love.audio.stop(v)
       end
       --decide if we were passed a table or a vararg,
       --and assemble the playlist
       if type(first) == "table" then
          self.playlist = first
       else
          self.playlist = {first, ...}
       end
       self.currentsong = 1
       --play
       love.audio.play(self.playlist[1])
    end

    --do some shufflin'
    function soundmanager:shuffle(first, ...)
       local playlist
       if type(first) == "table" then
          playlist = first
       else
          playlist = {first, ...}
       end
       table.sort(playlist, shuffle)
       return unpack(playlist)
    end

    --update
    function soundmanager:update(dt)
       --check which sounds in the queue have finished, and remove them
       local removelist = {}
       for i, v in ipairs(self.queue) do
          if v:isStopped() then
             table.insert(removelist, i)
          end
       end
       --we can't remove them in the loop, so use another loop
       for i, v in ipairs(removelist) do
          table.remove(self.queue, v-i+1)
       end
       --advance the playlist if necessary
       if self.currentsong ~= -1 and self.playlist and self.playlist[self.currentsong]:isStopped() then
          self.currentsong = self.currentsong + 1
          if self.currentsong > #self.playlist then
             self.currentsong = 1
          end
          love.audio.play(self.playlist[self.currentsong])
       end
    end

Category:

- Snippets