Erro Npc Duel

local focus = 0
local max_distance = 10
local talk_start = 0
local conv = 0
local fighting = false
local challenger = 0
local afk_limit_time = 300    -- seconds
local afk_time = 0        -- don't change
local battle_turn = 1        -- don't change
local challenger_turn = 0    -- don't change

local pokemons = {
{name = "Sudowoodo", optionalLevel = 400, sex = SEX_MALE, nick = "", ball = "normal"},
{name = "Rhydon", optionalLevel = 300, sex = SEX_MALE, nick = "", ball = "normal"},   --alterado v1.3
{name = "Steelix", optionalLevel = 400, sex = SEX_MALE, nick = "", ball = "normal"},
{name = "Onix", optionalLevel = 300, sex = SEX_MALE, nick = "", ball = "normal"},
{name = "Shiny Golem", optionalLevel = 300, sex = SEX_MALE, nick = "", ball = "normal"},
}

local function doSummonGymPokemon(npc)
    local this = npc
    if not isCreature(this) then return true end
    if #getCreatureSummons(this) >= 1 or focus == 0 then return true end
    local it = pokemons[battle_turn]
    doSummonMonster(this, it.name)              
    local summon = getCreatureSummons(this)[1]
    local balleffect = pokeballs["normal"].effect
        if it.ball and pokeballs[it.ball] then
            balleffect = pokeballs[it.ball].effect
        end
    doSendMagicEffect(getThingPos(summon), balleffect)
    setPlayerStorageValue(summon, 10000, balleffect)
    setPlayerStorageValue(summon, 10001, gobackmsgs[math.random(#gobackmsgs)].back:gsub("doka", it.nick ~= "" and it.nick or it.name))
    setPlayerStorageValue(summon, 1007, it.nick ~= "" and it.nick or it.name)
    doSetMonsterGym(summon, focus)
    addEvent(adjustWildPoke, 15, summon, it.optionalLevel)
    local name = it.nick ~= "" and it.nick or getCreatureName(this).."s "..it.name    --alterado v1.3
    doCreatureSay(this, gobackmsgs[math.random(#gobackmsgs)].go:gsub("doka", getPlayerStorageValue(summon, 1007)), 1)
    fighting = true
    battle_turn = battle_turn + 1
end

local function doWinDuel(cid, npc)
    if not isCreature(cid) then return true end
    local this = npc
    local a = gymbadges[getCreatureName(this)] + 8
    doCreatureSay(npc, "You won the duel! Congratulations, take this "..getItemNameById(a - 8).." as a prize.", 1)
    local b = getPlayerItemById(cid, true, a)
    if b.uid > 0 then doTransformItem(b.uid, b.itemid - ? end
doPlayerSendCancel(cid, "#getBadges# "..getCreatureName(this).." "..getPlayerItemCount(cid, gymbadges[getCreatureName(this)]))
end

function onCreatureSay(cid, type, msg)

    local msg = string.lower(msg)

    if focus == cid then
        talk_start = os.clock()
    end

    if msgcontains(msg, 'hi') and focus == 0 and getDistanceToCreature(cid) <= 4 then
        focus = cid
        talk_start = os.clock()
        conv = 1
        selfSay("Ola "..getCreatureName(cid)..", meu nome e Brock e eu sou Lider de Ginasio de Pewter. Como posso ajudar?")
    return true
    end

    if isDuelMsg(msg) and conv == 1 and focus == cid then

        --if getPlayerItemCount(cid, gymbadges[getCreatureName(getThis())]) >= 1 then
        --    selfSay("You have already won my Boulder Badge, maybe some other day we can fight.")
        --    focus = 0
        --return true
        --end

        if not hasPokemon(cid) then
            selfSay("Para lutar contra um lider de ginasio, você precisa de pokemons.")
        return true
        end

        selfSay("You are challenging me to a battle. It will be a "..#pokemons.." pokemon limit battle, let's start?")
        conv = 2

    return true
    end

    if isConfirmMsg(msg) and conv == 2 and focus == cid then

        challenger = focus
        setPlayerStorageValue(cid, 990, 1)
        selfSay("Yea, let's fight!")
        talk_start = os.clock()
        addEvent(doSummonGymPokemon, 850, getThis())
        conv = 3

    return true
    end

    if isNegMsg(msg) and conv == 2 and focus == cid then

        focus = 0
        selfSay("It is better for you to refuse a battle against me!")

    return true
    end

    if msgcontains(msg, 'bye') and focus == cid then
        selfSay('Bye and do your best trainer!')
        setPlayerStorageValue(focus, 990, -1)
        focus = 0
    return true
    end
end

local afk_warning = false
local change = false

function onThink()

    if focus == 0 then
        selfTurn(2)
        fighting = false
        challenger = 0
        challenger_turn = 0
        battle_turn = 1
        afk_time = 0
        afk_warning = false

        if #getCreatureSummons(getThis()) >= 1 then
            setPlayerStorageValue(getCreatureSummons(getThis())[1], 1006, 0)
            doCreatureAddHealth(getCreatureSummons(getThis())[1], -getCreatureMaxHealth(getCreatureSummons(getThis())[1]))
        end

    return true
    else

    if not isCreature(focus) then
        focus = 0
    return true
    end

    if fighting then

        talk_start = os.clock()

        if not isCreature(getCreatureTarget(getThis())) then
            if #getCreatureSummons(challenger) >= 1 then
                if getCreatureOutfit(getCreatureSummons(challenger)[1]).lookType ~= 2 then --alterado v1.6
                  selfAttackCreature(getCreatureSummons(challenger)[1])
                  challenger_turn = challenger_turn + 1
                  afk_time = 0
                end
            else
                afk_time = afk_time + 0.5
                if change then
                    change = false
                    challenger_turn = challenger_turn + 1
                end
            end
        end

        if afk_time > afk_limit_time then
            setPlayerStorageValue(focus, 990, -1)
            focus = 0
            selfSay("I have waited too long, come back when you are ready!")
        return true
        end

        if not afk_warning and afk_time > afk_limit_time / 2 then
            selfSay("Where's your pokemon? Let's fight!")
            afk_warning = true
        end

        if #getCreatureSummons(getThis()) == 0 then
            if battle_turn > #pokemons then
                addEvent(doWinDuel, 1000, focus, getThis())
                setPlayerStorageValue(focus, 990, -1)
                focus = 0
            return true
            end
            addEvent(doSummonGymPokemon, 1000, getThis())
        end

        if not hasPokemon(challenger) or challenger_turn >= 7 or challenger_turn > #pokemons then
            selfSay("You lost our duel! Maybe some other time you'll defeat me.")
            setPlayerStorageValue(focus, 990, -1)
            focus = 0
        return true
        end

    end

        local npcpos = getThingPos(getThis())
        local focpos = getThingPos(focus)

        if npcpos.z ~= focpos.z then
            setPlayerStorageValue(focus, 990, -1)
            focus = 0
            selfSay("Bye then.")
        return true
        end

        if (os.clock() - talk_start) > 30 then
            selfSay("Good bye and keep training!")
            setPlayerStorageValue(focus, 990, -1)
            focus = 0
        end

        if getDistanceToCreature(focus) > max_distance then
            setPlayerStorageValue(focus, 990, -1)
            focus = 0
        return true
        end

        local dir = doRedirectDirection(getDirectionTo(npcpos, focpos))    
        selfTurn(dir)
    end
return true
end