function init()
  connect(g_game, { onClientVersionChange = updateFeatures })
end

function terminate()
  disconnect(g_game, { onClientVersionChange = updateFeatures })
end

function updateFeatures(version)
    g_game.resetFeatures()
    if version <= 0 then
      return
    end
    
    -- you can add custom features here, list of them is in the modules\gamelib\const.lua
    g_game.enableFeature(GameBot)
    --g_game.enableFeature(GameExtendedOpcode)
    --g_game.enableFeature(GameMinimapLimitedToSingleFloor) -- it will generate minimap only for current floor
    --g_game.enableFeature(GameSpritesAlphaChannel)
    
    if(version >= 770) then
        g_game.enableFeature(GameLooktypeU16)
        g_game.enableFeature(GameMessageStatements)
        g_game.enableFeature(GameLoginPacketEncryption)
    end

    if(version >= 780) then
        g_game.enableFeature(GamePlayerAddons)
        g_game.enableFeature(GamePlayerStamina)
        g_game.enableFeature(GameNewFluids)
        g_game.enableFeature(GameMessageLevel)
        g_game.enableFeature(GamePlayerStateU16)
        g_game.enableFeature(GameNewOutfitProtocol)
    end

    if(version >= 790) then
        g_game.enableFeature(GameWritableDate)
    end

    if(version >= 840) then
        g_game.enableFeature(GameProtocolChecksum)
        g_game.enableFeature(GameAccountNames)
        g_game.enableFeature(GameDoubleFreeCapacity)
    end

    if(version >= 841) then
        g_game.enableFeature(GameChallengeOnLogin)
        g_game.enableFeature(GameMessageSizeCheck)
        g_game.enableFeature(GameTileAddThingWithStackpos)
    end

    if(version >= 854) then
        g_game.enableFeature(GameCreatureEmblems)
    end

    if(version >= 860) then
        g_game.enableFeature(GameAttackSeq)
    end

    if(version >= 862) then
        g_game.enableFeature(GamePenalityOnDeath)
    end

    if(version >= 870) then
        g_game.enableFeature(GameDoubleExperience)
        g_game.enableFeature(GamePlayerMounts)
        g_game.enableFeature(GameSpellList)
    end

    if(version >= 910) then
        g_game.enableFeature(GameNameOnNpcTrade)
        g_game.enableFeature(GameTotalCapacity)
        g_game.enableFeature(GameSkillsBase)
        g_game.enableFeature(GamePlayerRegenerationTime)
        g_game.enableFeature(GameChannelPlayerList)
        g_game.enableFeature(GameEnvironmentEffect)
        g_game.enableFeature(GameItemAnimationPhase)
    end

    if(version >= 940) then
        g_game.enableFeature(GamePlayerMarket)
    end

    if(version >= 953) then
        g_game.enableFeature(GamePurseSlot)
        g_game.enableFeature(GameClientPing)
    end

    if(version >= 960) then
        g_game.enableFeature(GameSpritesU32)
        g_game.enableFeature(GameOfflineTrainingTime)
    end

    if(version >= 963) then
        g_game.enableFeature(GameAdditionalVipInfo)
    end

    if(version >= 972) then
        g_game.enableFeature(GameDoublePlayerGoodsMoney)
    end

    if(version >= 980) then
        g_game.enableFeature(GamePreviewState)
        g_game.enableFeature(GameClientVersion)
    end

    if(version >= 981) then
        g_game.enableFeature(GameLoginPending)
        g_game.enableFeature(GameNewSpeedLaw)
    end

    if(version >= 984) then
        g_game.enableFeature(GameContainerPagination)
        g_game.enableFeature(GameBrowseField)
    end

    if(version >= 1000) then
        g_game.enableFeature(GameThingMarks)
        g_game.enableFeature(GamePVPMode)
    end

    if(version >= 1035) then
        g_game.enableFeature(GameDoubleSkills)
        g_game.enableFeature(GameBaseSkillU16)
    end

    if(version >= 1036) then
        g_game.enableFeature(GameCreatureIcons)
        g_game.enableFeature(GameHideNpcNames)
    end

    if(version >= 1038) then
        g_game.enableFeature(GamePremiumExpiration)
    end

    if(version >= 1050) then
        g_game.enableFeature(GameEnhancedAnimations)
    end

    if(version >= 1053) then
        g_game.enableFeature(GameUnjustifiedPoints)
    end

    if(version >= 1054) then
        g_game.enableFeature(GameExperienceBonus)
    end

    if(version >= 1055) then
        g_game.enableFeature(GameDeathType)
    end

    if(version >= 1057) then
        g_game.enableFeature(GameIdleAnimations)
    end

    if(version >= 1061) then
        g_game.enableFeature(GameOGLInformation)
    end

    if(version >= 1071) then
        g_game.enableFeature(GameContentRevision)
    end

    if(version >= 1072) then
        g_game.enableFeature(GameAuthenticator)
    end

    if(version >= 1074) then
        g_game.enableFeature(GameSessionKey)
    end

    if(version >= 1080) then
        g_game.enableFeature(GameIngameStore)
    end

    if(version >= 1092) then
        g_game.enableFeature(GameIngameStoreServiceType)
    end

    if(version >= 1093) then
        g_game.enableFeature(GameIngameStoreHighlights)
    end

    if(version >= 1094) then
        g_game.enableFeature(GameAdditionalSkills)
    end
    
    if(version >= 1100) then
        g_game.enableFeature(GamePrey)    
    end
    
    if(version >= 1200) then
      -- TFS keeps Adler checksums for OTClient connections.
      g_game.enableFeature(GameDoubleHealth)
      g_game.enableFeature(GamePlayerStateU32)
      g_game.enableFeature(GameTibia12Protocol)
    end
    
    modules.game_things.load()
end
