bgm = { credit_roll = { gm3 = love.audio.newSource("res/bgm/tgm_credit_roll.mp3", "stream"), }, pacer_test = love.audio.newSource("res/bgm/pacer_test.mp3", "stream"), } local current_bgm = nil local bgm_locked = true function switchBGM(sound, subsound) if bgm_locked then return end if current_bgm ~= nil then current_bgm:stop() end if subsound ~= nil then current_bgm = bgm[sound][subsound] resetBGMFadeout() elseif sound ~= nil then current_bgm = bgm[sound] resetBGMFadeout() else current_bgm = nil end end function switchBGMLoop(sound, subsound) if bgm_locked then return end switchBGM(sound, subsound) current_bgm:setLooping(true) end function lockBGM() bgm_locked = true end local fading_bgm = false local fadeout_time = 0 local total_fadeout_time = 0 function fadeoutBGM(time) if fading_bgm == false then fading_bgm = true fadeout_time = time total_fadeout_time = time end end function resetBGMFadeout(time) current_bgm:setVolume(1) fading_bgm = false current_bgm:play() end function processBGMFadeout(dt) if fading_bgm then fadeout_time = fadeout_time - dt if fadeout_time < 0 then fadeout_time = 0 fading_bgm = false end current_bgm:setVolume(fadeout_time / total_fadeout_time) end end function pauseBGM() if current_bgm ~= nil then current_bgm:pause() end end function resumeBGM() if current_bgm ~= nil then current_bgm:play() end end