local streamedOut = {}

addEventHandler("onClientPreRender", root,
	function ()
        local players = getElementsByType("player", root, true) -- table of sounds which will be transformed into 3D

        for k, v in ipairs(players) do
            -- Modify the sound's volume and pan to make it seem 3D, based on MTA source code
            
            local vecSoundPos = v.position
            local vecCamPos = Camera.position
            local fDistance = (vecSoundPos - vecCamPos).length
            local fMaxVol = v:getData("maxVol") or 1
            local fMinDistance = v:getData("minDist") or 5
            local fMaxDistance = v:getData("maxDist") or 25

            -- Limit panning when getting close to the min distance
            local fPanSharpness = 1.0
            if (fMinDistance ~= fMinDistance * 2) then
                fPanSharpness = math.max(0, math.min(1, (fDistance - fMinDistance) / ((fMinDistance * 2) - fMinDistance)))
            end

            local fPanLimit = (0.65 * fPanSharpness + 0.35)

            -- Pan
            local vecLook = Camera.matrix.forward.normalized
            local vecSound = (vecSoundPos - vecCamPos).normalized
            local cross = vecLook:cross(vecSound)
            local fPan = math.max(-fPanLimit, math.min(-cross.z, fPanLimit))

            local fDistDiff = fMaxDistance - fMinDistance;

            -- Transform e^-x to suit our sound
            local fVolume
            if (fDistance <= fMinDistance) then
                fVolume = fMaxVol
            elseif (fDistance >= fMaxDistance) then
                fVolume = 0.0
            else
                fVolume = math.exp(-(fDistance - fMinDistance) * (5.0 / fDistDiff)) * fMaxVol
            end
            setSoundPan(v, fPan)

            -- Additionally add a compressor effect if there's occlusion (something in the way of line of sight) (todo: make the volume change smoother)
            if isLineOfSightClear(localPlayer.position, vecSoundPos, true, true, false, true, false, true, true, localPlayer) then -- line of sight clear
                setSoundVolume(v, fVolume)
                setSoundEffectEnabled(v, "compressor", false)
            else
                local fVolume = fVolume * 0.5 -- reduce volume by half
                local fVolume = fVolume < 0.01 and 0 or fVolume -- treshold of 0.01 (anything below is forced to 0)
                setSoundVolume(v, fVolume)
                setSoundEffectEnabled(v, "compressor", true)
            end
        end
    end
, false)

addEventHandler("onClientElementStreamIn", root,
    function ()
        if source:getType() == "player" then
            triggerServerEvent("proximity-voice::broadcastUpdate", localPlayer, getElementsByType("player", root, true))
        end
    end
)

addEventHandler("onClientElementStreamOut", root,
    function ()
        if source:getType() == "player" then
            triggerServerEvent("proximity-voice::broadcastUpdate", localPlayer, getElementsByType("player", root, true))
            setSoundPan(source, 0)
            setSoundVolume(source, 0)
        end
    end
)

addEventHandler("onClientResourceStart", resourceRoot,
    function ()
        triggerServerEvent("proximity-voice::broadcastUpdate", localPlayer, getElementsByType("player", root, true)) -- request server to start broadcasting voice data once the resource is loaded (to prevent receiving voice data while this script is still downloading)
    end
, false)

-- Only remove the following lines if you provide credit another way like through an F1 panel or something.
addCommandHandler("sver",
    function ()
        outputConsole("[VOICE] Server is running (modified) proximity-voice by Addlibs. Licensed under https://creativecommons.org/licenses/by/4.0/")
    end
)