/*
-----------------------------------------------------------------------------
This source file is part of OpenSpace3D
For the latest info, see http://www.openspace3d.com

Copyright (c) 2012 I-maginer

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt

-----------------------------------------------------------------------------
*/

fun deleteOb(inst, p)=  
  let p -> [state trm] in
  if (trm == nil) then nil else
    _deltimer trm;
  0;;


fun cbTrmFirstUser(trm, u)=
  _deltimer trm;
  //todo set a room item to know if there is a current first user
  let u -> [inst netstr p] in
  let p -> [state _] in 
  if (((netGetNbUsers netstr) > 1) || state) then
  (
    mutate p <- [_ nil];
    0;
  )
  else
  (
    mutate p <- [1 nil];
    SendPluginEvent inst "Become first" nil nil;
    0;
  );
  0;;


fun cbRoomChanged(inst, netstr, room, p)=
  let p -> [state trm] in
  if (trm != nil) then nil else
    mutate p <- [_ (_rfltimer _starttimer _channel 250 @cbTrmFirstUser [inst netstr p])];
  0;;


fun cbNbUsers(inst, netstr, nb, p)=  
  let p -> [state trm] in
  if (trm != nil) then nil else
    mutate p <- [_ (_rfltimer _starttimer _channel 250 @cbTrmFirstUser [inst netstr p])];
  0;;


fun cbIsFirst(inst, from, action, param, rep, p)=
  let p -> [state _] in
  if state then
    SendPluginEvent inst "is first" nil nil
  else    
    SendPluginEvent inst "is not first" nil nil;
  0;;


fun newOb(inst)=
  let [0 nil] -> p in
  (
    setPluginInstanceCbNetNbUsers inst mkfun4 @cbNbUsers p;
    setPluginInstanceCbNetRoomChanged inst mkfun4 @cbRoomChanged p;  
    PluginRegisterAction inst "Is first ?" mkfun6 @cbIsFirst p;
    setPluginInstanceCbDel inst mkfun2 @deleteOb p;
  );
  0;;


fun IniPlug(file)=
  PlugRegister @newOb nil;
  setPluginEditor @dynamicedit;
  0;;