159 lines
3.8 KiB
Lua
159 lines
3.8 KiB
Lua
local type,rem=type,table.remove
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local sfxList={}
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local packSetting={}
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local Sources={}
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local volume=1
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local stereo=1
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local noteName={
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C=1,c=1,
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D=3,d=3,
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E=5,e=5,
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F=6,f=6,
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G=8,g=8,
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A=10,a=10,
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B=12,b=12,
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}
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local function _getTuneHeight(tune)
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local octave=tonumber(tune:sub(-1,-1))
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if octave then
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local tuneHeight=noteName[tune:sub(1,1)]
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if tuneHeight then
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tuneHeight=tuneHeight+(octave-1)*12
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local s=tune:sub(2,2)
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if s=='s'or s=='#'then
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tuneHeight=tuneHeight+1
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elseif s=='f'or s=='b'then
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tuneHeight=tuneHeight-1
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end
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return tuneHeight
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end
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end
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end
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local SFX={}
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function SFX.init(list)
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assert(type(list)=='table',"Initialize SFX lib with a list of filenames!")
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for i=1,#list do table.insert(sfxList,list[i])end
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end
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function SFX.load(path)
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local c=0
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for i=1,#sfxList do
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local fullPath=path..sfxList[i]..'.ogg'
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if love.filesystem.getInfo(fullPath)then
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Sources[sfxList[i]]={love.audio.newSource(fullPath,'static')}
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c=c+1
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else
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LOG("No SFX: "..sfxList[i]..'.ogg',.1)
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end
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end
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LOG(c.."/"..#sfxList.." SFX files loaded")
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end
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function SFX.loadSample(pack)
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assert(type(pack)=='table',"Usage: SFX.loadsample([table])")
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assert(pack.name,"No field: name")
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assert(pack.path,"No field: path")
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packSetting[pack.name]={
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base=(_getTuneHeight(pack.base)or 37)-1,
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}
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local num=1
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while love.filesystem.getInfo(pack.path..'/'..num..'.ogg')do
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Sources[pack.name..num]={love.audio.newSource(pack.path..'/'..num..'.ogg','static')}
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num=num+1
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end
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LOG((num-1).." "..pack.name.." samples loaded")
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end
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function SFX.getCount()
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return #sfxList
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end
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function SFX.setVol(v)
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assert(type(v)=='number'and v>=0 and v<=1)
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volume=v
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end
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function SFX.setStereo(v)
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assert(type(v)=='number'and v>=0 and v<=1)
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stereo=v
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end
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function SFX.playSample(pack,...)--vol-2, sampSet1, vol-3, sampSet2, vol-1
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if ... then
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local arg={...}
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local vol
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if type(arg[#arg])=='number'then vol=rem(arg)end
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for i=1,#arg do
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if type(arg[i])=='number'then
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vol=arg[i]
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else
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local tune=arg[i]
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tune=_getTuneHeight(tune)-packSetting[pack].base
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SFX.play(pack..tune,vol)
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end
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end
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end
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end
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function SFX.play(name,vol,pos)
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if volume==0 or vol==0 then return end
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local S=Sources[name]--Source list
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if not S then return end
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local n=1
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while S[n]:isPlaying()do
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n=n+1
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if not S[n]then
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S[n]=S[1]:clone()
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S[n]:seek(0)
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break
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end
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end
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S=S[n]--AU_SRC
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if S:getChannelCount()==1 then
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if pos then
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pos=pos*stereo
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S:setPosition(pos,1-pos^2,0)
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else
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S:setPosition(0,0,0)
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end
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end
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S:setVolume(((vol or 1)*volume)^1.626)
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S:play()
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end
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function SFX.fplay(name,vol,pos)
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local S=Sources[name]--Source list
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if not S then return end
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local n=1
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while S[n]:isPlaying()do
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n=n+1
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if not S[n]then
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S[n]=S[1]:clone()
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S[n]:seek(0)
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break
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end
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end
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S=S[n]--AU_SRC
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if S:getChannelCount()==1 then
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if pos then
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pos=pos*stereo
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S:setPosition(pos,1-pos^2,0)
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else
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S:setPosition(0,0,0)
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end
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end
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S:setVolume(vol^1.626)
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S:play()
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end
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function SFX.reset()
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for _,L in next,Sources do
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if type(L)=='table'then
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for i=#L,1,-1 do
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if not L[i]:isPlaying()then
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rem(L,i)
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end
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end
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end
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end
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end
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return SFX
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