```lua
local playerInfo = {}

--Create a new index into player info about the player.
function PopulatePlayerInfo(index)
    if NetworkIsPlayerActive(id) and GetPlayerPed(i) ~= PlayerPedId() then
        local serverId = GetPlayerServerId(i)
        local player = GetPlayerFromServerId(serverId)
        playerInfo[i] = {
            pid = i,
            sid = serverId,
            ped = GetPlayerPed(player),
            blip = -1
        }
    end
end

Citizen.CreateThread(function()
    local slots = GetConvarInt('sv_maxclients', 32)
    while true do
        for i = 0, slots do

            -- Wew, we found a new player.
            if playerInfo == nil then
                PopulatePlayerInfo(i)
            end

            -- If the server ID differs, then the slot got reassigned probably.
            if playerInfo[i].sid != GetPlayerServerId(i) then
                PopulatePlayerInfo(i)
            end
        end

        -- Do update thingies.
        UpdateRadar()
        Citizen.Wait(1000)
    end
end)

function UpdateRadar()
    if RadarEnabled then
        for i=1, #playerInfo, 1 do
            local player = playerInfo[i]

            -- Get the distance between player and target.
            local playerCoords = GetEntityCoords(PlayerPedId())
            local targetCoords = GetEntityCoords(player.ped)
            local distance = Abs(#(playerCoords - targetCoords))

            if distance < 200 then
                -- We don't have a blip yet, create one.
                if player.blip == -1 then
                    local blipId = createBlip(serverId);
                    player.blip = blipId
                    playerInfo[i] = player
                else
                    SetBlipCoords(player.blip, targetCoords)
                end
            else
                -- Out of reach, remove the blip.
                RemoveBlip(player.blip)
                player.blip = -1
                playerInfo[i] = player
            end
        end
    end

    Citizen.Wait(100)
end
```