103 lines
2.3 KiB
Lua
103 lines
2.3 KiB
Lua
local BGM={
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default=false,
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getList=function()error("Can't getList before initialized!")end,
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getCount=function()return 0 end,
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play=NULL,
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freshVolume=NULL,
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stop=NULL,
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--nowPlay=[str:playing ID]
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--playing=[src:playing SRC]
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}
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function BGM.setDefault(bgm)
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BGM.default=bgm
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end
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function BGM.init(list)
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BGM.init=nil
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local min=math.min
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local Sources={}function BGM.getList()return list end
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local count=#list function BGM.getCount()return count end
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local function fadeOut(src)
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while true do
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coroutine.yield()
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local v=src:getVolume()-.025*SETTING.bgm
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src:setVolume(v>0 and v or 0)
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if v<=0 then
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src:stop()
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return true
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end
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end
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end
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local function fadeIn(src)
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while true do
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coroutine.yield()
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local v=SETTING.bgm
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v=min(v,src:getVolume()+.025*v)
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src:setVolume(v)
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if v>=SETTING.bgm then
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return true
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end
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end
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end
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local function removeCurFadeOut(task,code,src)
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return task.code==code and task.args[1]==src
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end
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local function load(skip)
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for i=1,count do
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local file="media/BGM/"..list[i]..".ogg"
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if love.filesystem.getInfo(file)then
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Sources[list[i]]=love.audio.newSource(file,'stream')
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Sources[list[i]]:setLooping(true)
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Sources[list[i]]:setVolume(0)
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else
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LOG.print("No BGM file: "..list[i],5,'warn')
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end
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if not skip and i~=count then
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coroutine.yield()
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end
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end
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BGM.loadOne=nil
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function BGM.play(s)
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if not s then s=BGM.default end
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if SETTING.bgm==0 then
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BGM.nowPlay=s
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BGM.playing=Sources[s]
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return true
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end
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if s and Sources[s]then
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if BGM.nowPlay~=s then
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if BGM.nowPlay then TASK.new(fadeOut,BGM.playing)end
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TASK.removeTask_iterate(removeCurFadeOut,fadeOut,Sources[s])
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TASK.removeTask_code(fadeIn)
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TASK.new(fadeIn,Sources[s])
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BGM.nowPlay=s
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BGM.playing=Sources[s]
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BGM.playing:play()
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end
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return true
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end
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end
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function BGM.freshVolume()
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if BGM.playing then
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local v=SETTING.bgm
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if v>0 then
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BGM.playing:setVolume(v)
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BGM.playing:play()
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elseif BGM.nowPlay then
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BGM.playing:pause()
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end
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end
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end
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function BGM.stop()
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TASK.removeTask_code(fadeIn)
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if BGM.nowPlay then TASK.new(fadeOut,BGM.playing)end
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BGM.nowPlay,BGM.playing=nil
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end
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end
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BGM.loadOne=coroutine.wrap(load)
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function BGM.loadAll()load(true)end
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end
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return BGM |