/* *  Simbad - Robot Simulator *  Copyright (C) 2004 Louis Hugues * *  This program is free software; you can redistribute it and/or modify *  it under the terms of the GNU 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 General Public License for more details. * *  You should have received a copy of the GNU 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 * ----------------------------------------------------------------------------- * $Author: sioulseuguh $  * $Date: 2005/02/05 11:05:27 $ * $Revision: 1.7 $ * $Source: /cvsroot/simbad/src/simbad/gui/AgentFollower.java,v $ */package simbad.gui;import simbad.sim.*;/** * The AgentFollower class is a helper class for the AgentInspector. It updates cyclically the world view point. * in order to follow agent movements.   *   */class AgentFollower implements Runnable {    World world;    SimpleAgent agent;    Thread thread;    boolean stopped;    boolean changed;    int viewPointType;    AgentFollower(World world, SimpleAgent agent) {        this.agent = agent;        this.world = world;        viewPointType = World.VIEW_ABOVE_AGENT;        stopped = true;        thread = new Thread(this);        thread.start();    }    public void run() {        while (true) {            changed= false;            if (!stopped)            			world.changeViewPoint(viewPointType, agent);            try {                // don't need precise time tick                // do multiple sleep to diminish ui latency                for (int i=0;i<30;i++){                    Thread.sleep(100);                    if (changed) break;                }            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }    protected void setViewPointType(int type){        viewPointType = type;    }    protected void suspend() {        stopped = true;        changed= true;    }    protected void resume() {        stopped = false;        changed= true;    }}