Invisible Monster Attacker

local info = [[
Name: Invisible Monster Attacker
Description: Executes an AoE when monsters go invisible
Author: Cavitt Glover (Syntax)
Version: 1.0.00 (updated 04.25.2012)]]

local config = {
    attacks = {
        --[[
        runes/spells should be prioritized from top to bottom, eg: exori gran will be attempted before exori or exori mas.

        aggressive:
            0 = attack triggers when no players are in the area.
            1 = attack triggers when only war enemies and skulled players, noone else.
            2 = attack triggers when innocents are in the area but not when friendlies are.
            3 = attack triggers when friendlies are in the area but not when innocents are.
            4 = attack triggers without any regards to players in the area.
        ]]
        --{spell="exori gran", threshold=5, mana=50, radius=1, aggressive=0},
        {rune=3191, threshold=2, radius=5, aggressive=0},
        --{spell="exori mas", threshold =7, mana=80, radius=4, aggressive=0}
    }
}

local attack = false
local function think()
    local target = Creature.GetByID(Self.TargetID())
    if(target:isVisible() and target:isAlive() and target:isValid())then -- target is visible, record it
      attack = true
    elseif(not target:isVisible() and attack)then -- creature went invisible, attack it
      attack = false -- for next check
      for _, info in ipairs(config.attacks)do
          local check = getTargetsInArea(Self.Position(), info.radius, info.aggressiveness, true)
          if(check)then -- if it's not false from a security check, continue
              if(info.spell)then
                  Self.Cast(info.spell, info.mana)
              elseif(info.rune)then
                  Self.UseItemWithMyPosition(info.rune)
              end
              wait(2000,2500)
          end
      end
    end
end

print(info)
wait(5000)
while (true) do
    think()
    wait(500)
end