Rescript of Spells

[Jordan_August]

I was curious if anyone could help me revamp these couple spells so they are compatible with 0.3.6. I'm pretty sure they are scripted for 1.0+ and id like to have a "ninja" voc on my 8.60. Just need a little help in doing so. They are originally located Spell - Ninja Vocation Spells if you would like to see how the spell is executed.

local function targetEffect(cid)
    local player = Player(cid)
    if not player then
        return
    end
    local effect =  CONST_ANI_REDSTAR
    local orig = player:getPosition()
    local d1, d2 = {z = orig.z}, {z = orig.z}
    d1.x = orig.x - 5
    d2.x = orig.x + 5
    for i = -2, 2 do
        d1.y = orig.y + i
        d2.y = d1.y
        orig:sendDistanceEffect(d1, effect)
        orig:sendDistanceEffect(d2, effect)
    end
    d1.y = orig.y - 3
    d2.y = orig.y + 3
    for i = -4, 4 do
        d1.x = orig.x + i
        d2.x = d1.x
        orig:sendDistanceEffect(d1, effect)
        orig:sendDistanceEffect(d2, effect)
    end
end
local function backOldPosition(cid, oldPosition)
    local player = Player(cid)
    if not player then
        return
    end
 
    player:teleportTo(oldPosition)
    player:setGhostMode(false)
end
local function jumpEffect(cid, target)
    local player = Player(cid)
    if not player then
        return
    end
    local target = Creature(target)
    if target then
        player:getPosition():sendDistanceEffect(target:getPosition(), CONST_ANI_EXPLOSION)
    end
end
local function jumpOnTarget(cid, target, targetCount, oldPosition)
    local player = Player(cid)
    if not player then
        return
    end
    local target = Creature(target)
    if target then
        addEvent(targetEffect, 100, cid)
        player:teleportTo(target:getPosition())
        player:setGhostMode(true)
        doTargetCombatHealth(cid, target, COMBAT_PHYSICALDAMAGE, -1, -100, CONST_ME_ASSASSIN)
        if targetCount == 0 then
            addEvent(backOldPosition, 400, cid, oldPosition)
        end
    end
end
local function extractRandomValuesFromTable(tbl) --By Printer(This will make sure not to select a value twice from the table)
    if #tbl == 0 then
        return false
    end
          return table.remove(tbl, math.random(#tbl))
end
function onCastSpell(creature, var)
    local targets = {}
    local playerPos = creature:getPosition()
    local spectators = Game.getSpectators(playerPos, false, false, 0, 10, 0, 10)
    for i = 1, #spectators do
        local specs = spectators[i]
        if specs ~= creature and not specs:isNpc() then
            targets[#targets+1] = specs
        end
    end
    if #targets == 0 then
        creature:sendCancelMessage('There is no targets in sight.')
        playerPos:sendMagicEffect(CONST_ME_POFF)
        return false
    end
    local targetCount = #targets
    for i = 1, #targets do
        local randTarget = extractRandomValuesFromTable(targets)
        addEvent(jumpOnTarget, i * 400, creature:getId(), randTarget:getId(), targetCount - i, playerPos)
        addEvent(jumpEffect, i * 300, creature:getId(), randTarget:getId())
    end
    return false
end

local function sendDistanceEffectDelay(cid, fromPos, toPos, effect)
    local player = Player(cid)
    if not player then
        return
    end
    fromPos:sendDistanceEffect(toPos, effect)
end
local function ninjaJumpDash(cid, target, oldPos, lastJump, back)
    local player = Player(cid)
    if not player then
        return
    end
    local target = Creature(target)
    if not target then
        player:setGhostMode(false)
        return
    end
 
    if lastJump then
        player:setGhostMode(false)
    end
    if back then
        player:teleportTo(oldPos)
    else
        player:teleportTo(target:getPosition())
    end
    doTargetCombatHealth(cid, target, COMBAT_PHYSICALDAMAGE, -1, -100, CONST_ME_THUNDER)
end
function onCastSpell(creature, var)
    local cid = creature:getId()
    local playerPos = creature:getPosition()
    creature:setGhostMode(true)
    addEvent(ninjaJumpDash, 0, cid, target:getId(), playerPos, false, false)
    addEvent(sendDistanceEffectDelay, 100, cid, playerPos, target:getPosition(), CONST_ANI_ENERGY)
    addEvent(sendDistanceEffectDelay, 300, cid, target:getPosition(), playerPos, CONST_ANI_ENERGY)
    addEvent(ninjaJumpDash, 400, cid, target:getId(), playerPos, false, true)
    addEvent(ninjaJumpDash, 600, cid, target:getId(), playerPos, false, false)
    addEvent(sendDistanceEffectDelay, 700, cid, playerPos, target:getPosition(), CONST_ANI_ENERGY)
    addEvent(sendDistanceEffectDelay, 1000, cid, target:getPosition(), playerPos, CONST_ANI_ENERGY)
    addEvent(ninjaJumpDash, 1100, cid, target:getId(), playerPos, false, true)
    addEvent(ninjaJumpDash, 1300, cid, target:getId(), playerPos, false, false)
    addEvent(sendDistanceEffectDelay, 1400, cid, playerPos, target:getPosition(), CONST_ANI_ENERGY)
    addEvent(sendDistanceEffectDelay, 1700, cid, target:getPosition(), playerPos, CONST_ANI_ENERGY)
    addEvent(ninjaJumpDash, 1800, cid, target:getId(), playerPos, true, true)
    return false
end