Help me improve this npc!

[murilow1]

Okay, i looked whole internet and ot forums for a npc which summons monster, but i all i got is broken scripts...

Im trying to start from scratch, but i got poor scrippiting skills

1) Its suppose to be a npc thats summon random monsters, only one per turn, in a 'x' location...
2) When the last summon dies, its summon another one (random) in random seconds...

All i have until here:

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function onCreatureAppear(cid)			npcHandler:onCreatureAppear(cid)			end
function onCreatureDisappear(cid)		npcHandler:onCreatureDisappear(cid)			end
function onCreatureSay(cid, type, msg)	npcHandler:onCreatureSay(cid, type, msg)	end
function onThink()						npcHandler:onThink()						end

npcHandler:addModule(FocusModule:new())

local position = {x=998, y=889, z=7}

function onCreatureAppear(cid)
	if getDistanceToCreature(cid) < 4 then
		doSummonCreature("Demon", position)
	end
end

its spamn demon everywhere :w00t:

any1?