Eu tenho esse script que cria walls de pedra controlando pelo ctrl. 

Eu quero deixar essa mesma função de controlar mas com uma magia que tire dano.

 

--<Script by Jhon992>--

local stonesId = {8633,8634,8635,8636} -- ids dos diferente tipos de stones.
local timeRemove = 10 -- tempo para dumir as pedras em segundos.

function createObject(cid, position, stonesPosition)
if (isPlayer(cid)) then
if getPlayerLookDir(cid) == 0 then
	positions = {x=position.x, y=position.y-1, z=position.z}
elseif getPlayerLookDir(cid) == 1 then
	positions = {x=position.x+1, y=position.y, z=position.z}
elseif getPlayerLookDir(cid) == 2 then
	positions = {x=position.x, y=position.y+1, z=position.z}
elseif getPlayerLookDir(cid) == 3 then
	positions = {x=position.x-1, y=position.y, z=position.z}
end

if isWalkable(positions) then
	createStone(stonesPosition, positions, stonesId[math.random(1,#stonesId)], cid)
	addEvent(createObject, 500, cid, positions, stonesPosition)
else
	addEvent(removeStones, timeRemove*1000, stonesPosition)
end
end
end

function createStone(stonesPosition, positions, stone, cid)
doCreateItem(stone, 1, positions)
stonesPosition[(#stonesPosition)+1] = {x=positions.x, y=positions.y, z=positions.z, stackpos=1}
end

function removeStones(stonesPosition)
for i=1, #stonesPosition do
for o=1, 2 do
	stonesPosition[i] = {x=stonesPosition[i].x, y=stonesPosition[i].y, z=stonesPosition[i].z, stackpos=o}
	if isInArray(stonesId, getThingfromPos(stonesPosition[i]).itemid) then
		doRemoveItem(getThingfromPos(stonesPosition[i]).uid)
	end
end
end
end

function isWalkable(pos, creature, pz, proj) -- nord
if getTileThingByPos({x = pos.x, y = pos.y, z = pos.z, stackpos = 0}).itemid == 0 then return false end
local creature = getTopCreature(pos)
if creature.type > 0 then	return false end
if getTilePzInfo(pos) and not pz then return false end
local n = not proj and 3 or 2
for i = 0, 255 do
	pos.stackpos = i
	local tile = getTileThingByPos(pos)
	if tile.itemid ~= 0 and not isCreature(tile.uid) then
		if hasProperty(tile.uid, n) or hasProperty(tile.uid, 7) then
			return false
		end
	end
end
return true
end

function onCastSpell(cid, var)
local stonesPosition = {}
local position = getPlayerPosition(cid)
createObject(cid, position, stonesPosition)
   return true
end

 

local stonesId = {8633,8634,8635,8636} -- ids dos diferentes tipos de stones.
local timeRemove = 10 -- tempo para remover as pedras em segundos.
local damageAmount = 50 -- Quantidade de dano que a magia causará.

function createObject(cid, position, stonesPosition)
    if (isPlayer(cid)) then
        if getPlayerLookDir(cid) == 0 then
            positions = {x=position.x, y=position.y-1, z=position.z}
        elseif getPlayerLookDir(cid) == 1 then
            positions = {x=position.x+1, y=position.y, z=position.z}
        elseif getPlayerLookDir(cid) == 2 then
            positions = {x=position.x, y=position.y+1, z=position.z}
        elseif getPlayerLookDir(cid) == 3 then
            positions = {x=position.x-1, y=position.y, z=position.z}
        end

        if isWalkable(positions) then
            createStone(stonesPosition, positions, stonesId[math.random(1,#stonesId)], cid)
            addEvent(createObject, 500, cid, positions, stonesPosition)
        else
            addEvent(removeStones, timeRemove*1000, stonesPosition)
            causarDanoMagia(cid, position, damageAmount) -- Chama a função causarDanoMagia com o dano especificado
        end
    end
end

function createStone(stonesPosition, positions, stone, cid)
    doCreateItem(stone, 1, positions)
    stonesPosition[(#stonesPosition)+1] = {x=positions.x, y=positions.y, z=positions.z, stackpos=1}
end

function removeStones(stonesPosition)
    for i=1, #stonesPosition do
        for o=1, 2 do
            stonesPosition[i] = {x=stonesPosition[i].x, y=stonesPosition[i].y, z=stonesPosition[i].z, stackpos=o}
            if isInArray(stonesId, getThingfromPos(stonesPosition[i]).itemid) then
                doRemoveItem(getThingfromPos(stonesPosition[i]).uid)
            end
        end
    end
end

function isWalkable(pos, creature, pz, proj) -- nord
    if getTileThingByPos({x = pos.x, y = pos.y, z = pos.z, stackpos = 0}).itemid == 0 then return false end
    local creature = getTopCreature(pos)
    if creature.type > 0 then	return false end
    if getTilePzInfo(pos) and not pz then return false end
    local n = not proj and 3 or 2
    for i = 0, 255 do
        pos.stackpos = i
        local tile = getTileThingByPos(pos)
        if tile.itemid ~= 0 and not isCreature(tile.uid) then
            if hasProperty(tile.uid, n) or hasProperty(tile.uid, 7) then
                return false
            end
        end
    end
    return true
end

function causarDanoMagia(cid, position, amount)
    local targetCreature = getTopCreature(position)
    if isPlayer(targetCreature) then
        doCreatureAddHealth(targetCreature, -amount) -- Isso causará dano ao jogador na posição
    end
end

function onCastSpell(cid, var)
    local stonesPosition = {}
    local position = getPlayerPosition(cid)
    createObject(cid, position, stonesPosition)
    return true
end