109 lines
2.5 KiB
Lua
109 lines
2.5 KiB
Lua
local BGM={
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default=false,
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getList=function()error("Cannot getList before initialize!")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 Sources={}
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local simpList={}
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for _,v in next,list do
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table.insert(simpList,v.name)
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Sources[v.name]=v.path
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end
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table.sort(simpList)
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function BGM.getList()return simpList end
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local count=#simpList
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function BGM.getCount()return count end
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function BGM.loadAll()for name in next,Sources do load(name)end 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=math.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(name)
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if type(Sources[name])=='string'then
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if love.filesystem.getInfo(Sources[name])then
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Sources[name]=love.audio.newSource(Sources[name],'stream')
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Sources[name]:setLooping(true)
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Sources[name]:setVolume(0)
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return true
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else
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MES.new('warn',"No BGM file: "..Sources[name],5)
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end
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elseif Sources[name]then
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return true
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elseif name then
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MES.new('warn',"No BGM: "..name,5)
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end
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end
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function BGM.play(name)
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if not name then name=BGM.default end
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if not load(name)then return end
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if SETTING.bgm==0 then
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BGM.nowPlay=name
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BGM.playing=Sources[name]
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return true
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end
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if name and Sources[name]then
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if BGM.nowPlay~=name 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[name])
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TASK.removeTask_code(fadeIn)
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TASK.new(fadeIn,Sources[name])
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BGM.nowPlay=name
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BGM.playing=Sources[name]
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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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return BGM |