Player played time recording

local RequiredGameTime = 300 -- in seconds

local T = {}

do
    for _, pPlayer in pairs(GetPlayersInWorld()) do
        T[tostring(pPlayer)] = GetGameTime()
    end
end

local function LogIn(event, pPlayer)
    local str = tostring(pPlayer)
    if(not T[str]) then
        T[str] = GetGameTime()
    end
end
local function LogOut(event, pPlayer)
    T[tostring(pPlayer)] = nil
end

function EnoughPlayed(pPlayer)
    local str = tostring(pPlayer)
    if(not T[str]) then
        T[str] = GetGameTime(); return 0
    end
    local Time = GetGameTime()-T[str]
    if(Time < RequiredGameTime) then
        return RequiredGameTime-Time
    end
    return false
end

function ResetPlayedTime(pPlayer)
    T[tostring(pPlayer)] = GetGameTime()
end

RegisterServerHook(4, LogIn) -- SERVER_HOOK_ENTER_WORLD
RegisterServerHook(13, LogOut) -- SERVER_HOOK_LOGOUT


--[[
Example of use:

function Hello(pUnit, event, pPlayer)
    pUnit:GossipCreateMenu(1, pPlayer, 0)
    pUnit:GossipMenuAddItem(0, "Test1", 1, 0)
    local ReqTime = EnoughPlayed(pPlayer) -- Get needed time in seconds or false if ok to show
    if(not ReqTime) then -- This checks if the player has played 5 min for example
        pUnit:GossipMenuAddItem(0, "HAS PLAYED 5 MIN OR MORE", 2, 0)
    else
        pUnit:GossipMenuAddItem(0, "You still need to play "..(math.ceil(ReqTime/60)).." more minutes", 3, 0)
    end
    pUnit:GossipMenuAddItem(0, "Test2", 4, 0)
    pUnit:GossipSendMenu(pPlayer)
end

function Select(pUnit, event, pPlayer, id, intid, code)
    if(intid == 2) then
        -- do stuff
        pPlayer:SendBroadcastMessage("You have played 5 minutes and recieved a reward")
        ResetPlayedTime(pPlayer)
    elseif(intid == 3) then
        Hello(pUnit, event, pPlayer)
        return
    end
    pPlayer:GossipComplete()
end

RegisterUnitGossipEvent(190000, 1, Hello)
RegisterUnitGossipEvent(190000, 2, Select)
]]