TFS 0.X Spell get creature back

[sabodden]

I have this spell, to teleport player to a target

<instant name="Jump Target" words="jump target" range="5" maglv="11" mana="100" prem="0" aggressive="0" needtarget="1" params="0" exhaustion="2000" needlearn="0" event="script" value="attack/jump target.lua">
        <vocation id="1"/>
        <vocation id="5"/>
    </instant>

local config = {
    effect = 65, -- efeito
}

function onCastSpell(cid, var)
    local target = variantToNumber(var)

    if isCreature(cid) and isCreature(target) then
        local lookingDirection = getCreatureLookDirection(target)
        print(lookingDirection)


        doSendMagicEffect(getThingPos(cid), config.effect)
        doTeleportThing(cid, getThingPos(target))
        doSendMagicEffect(getThingPos(cid), config.effect)
    end
    return true
end

But i would like to make some changes...
It teleport player to target position, i would like to teleport player to the target back

lookingDirection prints:
0 north, 2 south, 1 east, 3 west

But how to detect back target position, if is valid to teleport and teleport if it is?

 

[owned]

local config = {
    effect = 65, -- efeito
    dir = {
        [0] = 2,
        [1] = 3,
        [2] = 0,
        [3] = 1
    }
}

local function isWalkable(cid, pos)
    if isCreature(getTopCreature(pos).uid) then
        return true
    end

    if not pos or type(pos) ~= "table" then
        return false
    end
    pos.stackpos = 0
    if not getThingFromPos(pos) then
        return false
    end
    if getTileThingByPos(pos).uid ~= 0 then
    local n = getTileInfo(pos)
        if (doTileQueryAdd(cid, pos) == 1) then
            return true
        end
    return false
    end
    if getThingFromPos(pos) and getThingFromPos(pos).uid > 0 and getThingFromPos(pos).itemid > 0 then
        if hasProperty(getThingFromPos(pos).uid, 2) then
            return false
        end
    end
    if getThingFromPos(pos) and getThingFromPos(pos).uid > 0 and getThingFromPos(pos).itemid > 0 then
        if getTilePzInfo(pos) then  
            return false
        end
    end
    return true
end

function onCastSpell(cid, var)
local target = variantToNumber(var)
    if isCreature(cid) and isCreature(target) then
    local lookDir = getCreatureLookDirection(target)
    local jPos = getPositionByDirection(getThingPos(target), config.dir[lookDir], 1)
        if isWalkable(cid, jPos) then
            doSendMagicEffect(getThingPos(cid), config.effect)
            doTeleportThing(cid, jPos)
        end
    end
    return true
end

 

[sabodden]

local config = {
    effect = 65, -- efeito
    dir = {
        [0] = 2,
        [1] = 3,
        [2] = 0,
        [3] = 1
    }
}

local function isWalkable(cid, pos)
    if isCreature(getTopCreature(pos).uid) then
        return true
    end

    if not pos or type(pos) ~= "table" then
        return false
    end
    pos.stackpos = 0
    if not getThingFromPos(pos) then
        return false
    end
    if getTileThingByPos(pos).uid ~= 0 then
    local n = getTileInfo(pos)
        if (doTileQueryAdd(cid, pos) == 1) then
            return true
        end
    return false
    end
    if getThingFromPos(pos) and getThingFromPos(pos).uid > 0 and getThingFromPos(pos).itemid > 0 then
        if hasProperty(getThingFromPos(pos).uid, 2) then
            return false
        end
    end
    if getThingFromPos(pos) and getThingFromPos(pos).uid > 0 and getThingFromPos(pos).itemid > 0 then
        if getTilePzInfo(pos) then 
            return false
        end
    end
    return true
end

function onCastSpell(cid, var)
local target = variantToNumber(var)
    if isCreature(cid) and isCreature(target) then
    local lookDir = getCreatureLookDirection(target)
    local jPos = getPositionByDirection(getThingPos(target), config.dir[lookDir], 1)
        if isWalkable(cid, jPos) then
            doSendMagicEffect(getThingPos(cid), config.effect)
            doTeleportThing(cid, jPos)
        end
    end
    return true
end

it's working guys, perfect man, thank you so much!