local sounds = { }

function createSiren(thePlayer, seat)
    if (getVehicleSirensOn(source) and (seat==0)) then
        local x, y, z = getElementPosition(source)
        local px, py, pz = getElementPosition(localPlayer)
        
        if (getDistanceBetweenPoints3D(x, y, z, px, py, pz)<25) then
            local sound = playSound3D("siren.wav", x, y, z, true)
            setSoundVolume(sound, 0.6)
            
            for i = 1, 20 do
                if (sounds[i]==nil) then
                    sounds[i] = { }
                    sounds[i][1] = source
                    sounds[i][2] = sound
                    break
                end
            end
        end
    end
end
addEventHandler("onClientVehicleExit", getRootElement(), createSiren)

function destroySiren(thePlayer, seat)
    if (seat==0) then
        local key = 0
        for i = 1, 20 do
            if (sounds[i]~=nil) then
                if (sounds[i][1]==source) then
                    key = i
                    break
                end
            else
                break
            end
        end
        
        if (key>0) then
            local sound = sounds[key][2]
            stopSound(sound)
            table.remove(sounds, key)
        end
    end
end
addEventHandler("onClientVehicleEnter", getRootElement(), destroySiren)