sounds = {
    bottom = love.audio.newSource("res/se/bottom.wav", "static"),
    lock = love.audio.newSource("res/se/lock.wav", "static"),
    erase = love.audio.newSource("res/se/erase.wav", "static"),
    fall = love.audio.newSource("res/se/fall.wav", "static"),
    ready = love.audio.newSource("res/se/ready.wav", "static"),
    promote = love.audio.newSource("res/se/promote.wav", "static"),
    demote = love.audio.newSource("res/se/demote.wav", "static"),
    autopromote = love.audio.newSource("res/se/autopromote.wav", "static"),
    bgm_firsthalf = love.audio.newSource("res/bgm/firsthalf.flac", "static"),
    bgm_secondhalf = love.audio.newSource("res/bgm/secondhalf.flac", "static"),
    bgm_title = love.audio.newSource("res/bgm/title.flac", "static")
}

function playSE(sound, subsound)
    if sound ~= nil then
        if subsound ~= nil then
            sounds[sound][subsound]:setVolume(0.4)
            if sounds[sound][subsound]:isPlaying() then
                sounds[sound][subsound]:stop()
            end
            sounds[sound][subsound]:play()
        else
            sounds[sound]:setVolume(0.4)
            if sounds[sound]:isPlaying() then
                sounds[sound]:stop()
            end
            sounds[sound]:play()
        end
    end
end

function playSEOnce(sound, subsound)
    if sound ~= nil then
        if subsound ~= nil then
            sounds[sound][subsound]:setVolume(0.4)
            if sounds[sound][subsound]:isPlaying() then
                return
            end
            sounds[sound][subsound]:play()
        else
            sounds[sound]:setVolume(0.4)
            if sounds[sound]:isPlaying() then
                return
            end
            sounds[sound]:play()
        end
    end
end