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/*
* PlayerThread.java
*
*
* The Salamander Project - 2D and 3D graphics libraries in Java
* Copyright (C) 2004 Mark McKay
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on September 28, 2004, 10:07 PM
*/
package com.kitfox.svg.app;
import java.util.*;
/**
*
* @author kitfox
*/
public class PlayerThread implements Runnable
{
HashSet listeners = new HashSet();
double curTime = 0;
double timeStep = .2;
public static final int PS_STOP = 0;
public static final int PS_PLAY_FWD = 1;
public static final int PS_PLAY_BACK = 2;
int playState = PS_STOP;
Thread thread;
/** Creates a new instance of PlayerThread */
public PlayerThread()
{
thread = new Thread(this);
thread.start();
}
public void run()
{
while (thread != null)
{
synchronized (this)
{
switch (playState)
{
case PS_PLAY_FWD:
curTime += timeStep;
break;
case PS_PLAY_BACK:
curTime -= timeStep;
if (curTime < 0) curTime = 0;
break;
default:
case PS_STOP:
break;
}
fireTimeUpdateEvent();
}
try
{
Thread.sleep((long)(timeStep * 1000));
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
}
public void exit() { thread = null; }
public synchronized void addListener(PlayerThreadListener listener)
{
listeners.add(listener);
}
public synchronized double getCurTime() { return curTime; }
public synchronized void setCurTime(double time)
{
curTime = time;
}
public synchronized double getTimeStep() { return timeStep; }
public synchronized void setTimeStep(double time)
{
timeStep = time;
if (timeStep < .01) timeStep = .01;
}
public synchronized int getPlayState() { return playState; }
public synchronized void setPlayState(int playState)
{
this.playState = playState;
}
private void fireTimeUpdateEvent()
{
for (Iterator it = listeners.iterator(); it.hasNext();)
{
PlayerThreadListener listener = (PlayerThreadListener)it.next();
listener.updateTime(curTime, timeStep, playState);
}
}
}
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