-- This file is part of Jiddo's advanced NpcSystem v3.0x. This npcsystem is free to use by anyone, for any purpuse.
-- Initial release date: 2007-02-21
-- Credits: Jiddo, honux(I'm using a modified version of his Find function).
-- Please include full credits whereever you use this system, or parts of it.
-- For support, questions and updates, please consult the following thread:
-- http://otfans.net/showthread.php?t=67810
if(NpcSystem == nil) then

-- Loads the underlying classes of the npcsystem.
dofile('data/npc/scripts/lib/npcsystem/keywordhandler.lua')
dofile('data/npc/scripts/lib/npcsystem/queue.lua')
dofile('data/npc/scripts/lib/npcsystem/npchandler.lua')
dofile('data/npc/scripts/lib/npcsystem/modules.lua')


-- Global npc constants:

-- Keyword nestling behavior. For more information look at the top of keywordhandler.lua
KEYWORD_BEHAVIOR = BEHAVIOR_NORMAL_EXTENDED

-- Gerrting and unGreeting keywords. For mor information look at the top of modules.lua
FOCUS_GREETWORDS = {'hi', 'hello'}
FOCUS_FAREWELLWORDS = {'bye', 'farewell', 'cya'}


-- The word for accepting/declining an offer. CAN ONLY CONTAIN ONE FIELD! For more information look at the top of modules.lua
SHOP_YESWORD = {'yes'}
SHOP_NOWORD = {'no'}

-- Pattern used to get the amount of an item a player wants to buy/sell.
PATTERN_COUNT = '%d+'

-- Talkdelay behavior. For mor information, look at the top of npchandler.lua.
NPCHANDLER_TALKDELAY = TALKDELAY_ONTHINK

-- Constant strings defining the keywords to replace in the default messages.
-- For more information, look at the top of npchandler.lua...
TAG_PLAYERNAME = '|PLAYERNAME|'
TAG_ITEMCOUNT = '|ITEMCOUNT|'
TAG_TOTALCOST = '|TOTALCOST|'
TAG_ITEMNAME = '|ITEMNAME|'
TAG_QUEUESIZE = '|QUEUESIZE|'





NpcSystem = {
  --
 }

-- Gets an npcparameter with the specified key. Returns nil if no such parameter is found.
function NpcSystem.getParameter(key)
 local ret = getNpcParameter(tostring(key))
 if((type(ret) == 'number' and ret == 0) or ret == nil) then
  return nil
 else
  return ret
 end
end

-- Parses all known parameters for the npc. Also parses parseable modules.
function NpcSystem.parseParameters(npcHandler)

 local ret = NpcSystem.getParameter('idletime')
 if(ret ~= nil) then
  npcHandler.idleTime = tonumber(ret)
 end

 local ret = NpcSystem.getParameter('talkradius')
 if(ret ~= nil) then
  npcHandler.talkRadius = tonumber(ret)
 end

 local ret = NpcSystem.getParameter('talkdelaytime')
 if(ret ~= nil) then
  npcHandler.talkDelayTime = tonumber(ret)
 end

 local ret = NpcSystem.getParameter('message_greet')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_GREET, ret)
 end
 local ret = NpcSystem.getParameter('message_farewell')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_FAREWELL, ret)
 end
 local ret = NpcSystem.getParameter('message_buy')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_BUY, ret)
 end
 local ret = NpcSystem.getParameter('message_sell')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_SELL, ret)
 end
 local ret = NpcSystem.getParameter('message_onbuy')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_ONBUY, ret)
 end
 local ret = NpcSystem.getParameter('message_onsell')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_ONSELL, ret)
 end
 local ret = NpcSystem.getParameter('message_needmoremoney')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_NEEDMOREMONEY, ret)
 end
 local ret = NpcSystem.getParameter('message_nothaveitem')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_NOTHAVEITEM, ret)
 end
 local ret = NpcSystem.getParameter('message_idletimeout')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_IDLETIMEOUT, ret)
 end
 local ret = NpcSystem.getParameter('message_walkaway')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_WALKAWAY, ret)
 end
 local ret = NpcSystem.getParameter('message_alreadyfocused')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_ALREADYFOCUSED, ret)
 end
 local ret = NpcSystem.getParameter('message_placedinqueue')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_PLACEDINQUEUE, ret)
 end
 local ret = NpcSystem.getParameter('message_decline')
 if(ret ~= nil) then
  npcHandler:setMessage(MESSAGE_DECLINE, ret)
 end

 -- Parse modules.
 for parameter, module in pairs(Modules.parseableModules) do
  local ret = NpcSystem.getParameter(parameter)
  if(ret ~= nil) then
   local number = tonumber(ret)
   if(number ~= 0 and module.parseParameters ~= nil) then
 local instance = module:new()
 npcHandler:addModule(instance)
 instance:parseParameters()
   end
  end
 end

end
end