[MTA] FFT

gistfile1.lua

local handl = nil
local sx,_ = guiGetScreenSize()
local colors = { tocolor(255,0,0),tocolor(0,255,0) }
 
function clientRenderFunc()
    if(handl) then
     	dxDrawRectangle(sx/2,0,1,256,tocolor(255,255,255,127))
      local bt = getSoundFFTData(handl,2048,257)
	     if(not bt) then return end
        for i=1,256 do
            bt[i] = math.sqrt(bt[i])*256 --scale it (sqrt to make low values more visible)
            dxDrawRectangle(sx/2-bt[i]/2,i-1,bt[i],1)
        end
    end
end
 
function clientSoundStopFunc(_)
    if(source == handl) then
    	removeEventHandler("onClientRender",root,clientRenderFunc)
    	removeEventHandler("onClientSoundStopped",root,clientSoundStopFunc)
    	handl = nil
    end
end
 
function musicStartFunc()
    if(not handl) then
        handl = playSound('nya.mp3')
        addEventHandler("onClientRender",root,clientRenderFunc)
	       addEventHandler("onClientSoundStopped",root,clientSoundStopFunc)
    end
end
 
function musicStopFunc()
    if(handl) then
        stopSound(handl)
        handl = nil
        removeEventHandler("onClientRender",root,clientRenderFunc)
	       removeEventHandler("onClientSoundStopped",root,clientSoundStopFunc)
    end
end
 
bindKey("9","down",musicStartFunc)
bindKey("0","down",musicStopFunc)