Solved [TFS 1.2] Movement (If player then..)

[Caduceus]

If a player is on playerPositions, then next player that tries to enter gets message & teleportTo(fromPosition).
As of right now, nobody can enter the room, even if playerPos is nil.

local playerPositions = Position(603, 975, 15)

function onStepIn(creature, item, position, fromPosition)
    local player = creature:getPlayer()
    if not player then
        return false
    end

            if playerPositions == nil then
            return false
        else
            player:sendTextMessage(MESSAGE_INFO_DESCR, "This table is full.")
            player:teleportTo(fromPosition, false)
            player:getPosition():sendMagicEffect(CONST_ME_TELEPORT)
            return true
            end
        end

solution:

local playerPositions = Position(1002, 935, 10)

function onStepIn(creature, item, position, fromPosition)
    local player = creature:getPlayer()
    if not player then
        return false
    end
        local specs, spec = Game.getSpectators(playerPositions, false, false, 1, 1, 1, 1)
        for i = 1, #specs do
            spec = specs[i]
            if spec:isPlayer() then
                player:teleportTo(fromPosition, false)
                player:sendTextMessage(MESSAGE_STATUS_SMALL, "You Shall Not Pass.")
                return true
            end
        end
    end

 

[Zothion]

function onStepIn(creature, item, position, fromPosition)
local player = creature:getPlayer()
if not player then
return false
end
topCreature = Tile(position):getTopCreature()
if not Player(topCreature) or not Player(topCreature) or not topCreature:getPlayer() then
return true
else
player:sendTextMessage(MESSAGE_INFO_DESCR, "This table is full.")
fromPosition:sendMagicEffect(CONST_ME_TELEPORT)
return false
end
end

try if this code works, getTopCreature() is a tile metamethod function, ferrari forgot to use Tile(pos) for it
this will simply not allow moving to the stepIn position (position in func arguments) if there is a player on there