-- this a global table within the script
local killTable = {}
local timer = 30 -- time in seconds

function populate(cid, target, seconds)
    locla ip = getPlayerIp(target)
    if not killTable[cid] == ip then
        killTable[cid] = ip
        addEvent(
            function(cid)
                killTable[cid] = 0
            end,
            seconds * 1000,
            cid
        )
        return true
    end
    return false
end


-- 2nd script
function onKill(cid, target, lastHit)
    if cid ~= target and isPlayer(target)  then
        if getPlayerIp(cid) == getPlayerIp(target) then
            doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_RED, 'You will be punished for killing a player of the same IP and will not recieve the reward.')
        else
            if populate(cid, target, timer) then
                doPlayerAddItem(cid, 2159, 1)
            end
        end
    end
    return true
end