Lua Script Error: [TalkAction Interface] Tfs 1.3

[Dorianek]

Lua Script Error: [TalkAction Interface]
data/talkactions/scripts/gamemaster/teleport_creature_here.luanSay
data/lib/core/creature.lua:22: attempt to index local 'tile' (a nil value)
stack traceback:
[C]: in function '__index'
data/lib/core/creature.lua:22: in function <data/lib/core/creature.lua:1>
(...tail calls...)
...alkactions/scripts/gamemaster/teleport_creature_here.lua:13: in function <...alkactions/scripts/gamemaster/teleport_creature_here.lua:1>


teleport_creature_here

function onSay(player, words, param)
    if not player:getGroup():getAccess() then
        return true
    end

    local creature = Creature(param)
    if not creature then
        player:sendCancelMessage("A creature with that name could not be found.")
        return false
    end

    local oldPosition = creature:getPosition()
    local newPosition = creature:getClosestFreePosition(player:getPosition(), false)
    if newPosition.x == 0 then
        player:sendCancelMessage("You can not teleport " .. creature:getName() .. ".")
        return false
    elseif creature:teleportTo(newPosition) then
        if not creature:isInGhostMode() then
            oldPosition:sendMagicEffect(CONST_ME_POFF)
            newPosition:sendMagicEffect(CONST_ME_TELEPORT)
        end
    end
    return false
end

Creature.lua

function Creature.getClosestFreePosition(self, position, maxRadius, mustBeReachable)
    maxRadius = maxRadius or 1

    -- backward compatability (extended)
    if maxRadius == true then
        maxRadius = 2
    end

    local checkPosition = Position(position)
    for radius = 0, maxRadius do
        checkPosition.x = checkPosition.x - math.min(1, radius)
        checkPosition.y = checkPosition.y + math.min(1, radius)

        local total = math.max(1, radius * 8)
        for i = 1, total do
            if radius > 0 then
                local direction = math.floor((i - 1) / (radius * 2))
                checkPosition:getNextPosition(direction)
            end

            local tile = Tile(checkPosition)
            if tile:getCreatureCount() == 0 and not tile:hasProperty(CONST_PROP_IMMOVABLEBLOCKSOLID) and
                (not mustBeReachable or self:getPathTo(checkPosition)) then
                return checkPosition
            end
        end
    end
    return Position()
end


function Creature.getMonster(self)
    return self:isMonster() and self or nil
end

function Creature.getPlayer(self)
    return self:isPlayer() and self or nil
end

function Creature.isItem(self)
    return false
end

function Creature.isMonster(self)
    return false
end

function Creature.isNpc(self)
    return false
end

function Creature.isPlayer(self)
    return false
end

function Creature.isTile(self)
    return false
end

function Creature:setMonsterOutfit(monster, time)
    local monsterType = MonsterType(monster)
    if not monsterType then
        return false
    end

    if self:isPlayer() and not (self:hasFlag(PlayerFlag_CanIllusionAll) or monsterType:isIllusionable()) then
        return false
    end

    local condition = Condition(CONDITION_OUTFIT)
    condition:setOutfit(monsterType:getOutfit())
    condition:setTicks(time)
    self:addCondition(condition)

    return true
end

function Creature:setItemOutfit(item, time)
    local itemType = ItemType(item)
    if not itemType then
        return false
    end

    local condition = Condition(CONDITION_OUTFIT)
    condition:setOutfit({
        lookTypeEx = itemType:getId()
    })
    condition:setTicks(time)
    self:addCondition(condition)

    return true
end

function Creature:addSummon(monster)
    local summon = Monster(monster)
    if not summon then
        return false
    end

    summon:setTarget(nil)
    summon:setFollowCreature(nil)
    summon:setDropLoot(false)
    summon:setSkillLoss(false)
    summon:setMaster(self)

    return true
end

function Creature:removeSummon(monster)
    local summon = Monster(monster)
    if not summon or summon:getMaster() ~= self then
        return false
    end

    summon:setTarget(nil)
    summon:setFollowCreature(nil)
    summon:setDropLoot(false)
    summon:setSkillLoss(false)
    summon:setMaster(nil)

    return true
end

function Creature:addDamageCondition(target, type, list, damage, period, rounds)
    if damage <= 0 or not target or target:isImmune(type) then
        return false
    end

    local condition = Condition(type)
    condition:setParameter(CONDITION_PARAM_OWNER, self:getId())
    condition:setParameter(CONDITION_PARAM_DELAYED, true)

    if list == DAMAGELIST_EXPONENTIAL_DAMAGE then
        local exponent, value = -10, 0
        while value < damage do
            value = math.floor(10 * math.pow(1.2, exponent) + 0.5)
            condition:addDamage(1, period or 4000, -value)

            if value >= damage then
                local permille = math.random(10, 1200) / 1000
                condition:addDamage(1, period or 4000, -math.max(1, math.floor(value * permille + 0.5)))
            else
                exponent = exponent + 1
            end
        end
    elseif list == DAMAGELIST_LOGARITHMIC_DAMAGE then
        local n, value = 0, damage
        while value > 0 do
            value = math.floor(damage * math.pow(2.718281828459, -0.05 * n) + 0.5)
            if value ~= 0 then
                condition:addDamage(1, period or 4000, -value)
                n = n + 1
            end
        end
    elseif list == DAMAGELIST_VARYING_PERIOD then
        for _ = 1, rounds do
            condition:addDamage(1, math.random(period[1], period[2]) * 1000, -damage)
        end
    elseif list == DAMAGELIST_CONSTANT_PERIOD then
        condition:addDamage(rounds, period * 1000, -damage)
    end

    target:addCondition(condition)
    return true
end