Dave Hoover
b68e799106
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@881 ed5b42cb-e716-0410-a449-f6a68f950b19
131 lines
4.3 KiB
Java
131 lines
4.3 KiB
Java
//
|
|
// $Id$
|
|
//
|
|
// Nenya library - tools for developing networked games
|
|
// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
|
|
// http://www.threerings.net/code/nenya/
|
|
//
|
|
// 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
|
|
|
|
package com.threerings.jme.model;
|
|
|
|
import java.io.IOException;
|
|
|
|
import java.util.Properties;
|
|
|
|
import com.jme.math.Vector3f;
|
|
import com.jme.scene.Controller;
|
|
import com.jme.scene.Spatial;
|
|
import com.jme.util.export.JMEExporter;
|
|
import com.jme.util.export.JMEImporter;
|
|
import com.jme.util.export.InputCapsule;
|
|
import com.jme.util.export.OutputCapsule;
|
|
|
|
import com.threerings.jme.util.JmeUtil;
|
|
|
|
/**
|
|
* A procedural animation that moves a node along a straight line at a constant velocity (then
|
|
* either repeats or moves it in the other direction).
|
|
*/
|
|
public class Translator extends ModelController
|
|
{
|
|
@Override
|
|
public void configure (Properties props, Spatial target)
|
|
{
|
|
super.configure(props, target);
|
|
_from = JmeUtil.parseVector3f(props.getProperty("from", "0, 0, 0"));
|
|
_to = JmeUtil.parseVector3f(props.getProperty("to", "10, 0, 0"));
|
|
_duration = Float.parseFloat(props.getProperty("duration", "1"));
|
|
_repeatType = JmeUtil.parseRepeatType(props.getProperty("repeat_type"),
|
|
Controller.RT_WRAP);
|
|
}
|
|
|
|
// documentation inherited
|
|
public void update (float time)
|
|
{
|
|
if (!isActive()) {
|
|
return;
|
|
}
|
|
_elapsed += (time / _duration);
|
|
float alpha;
|
|
if (_repeatType == Controller.RT_CLAMP) {
|
|
alpha = Math.min(_elapsed, 1f);
|
|
} else if (_repeatType == Controller.RT_WRAP) {
|
|
alpha = (_elapsed - (int)_elapsed);
|
|
} else { // _repeatType == Controller.RT_CYCLE
|
|
int ipart = (int)_elapsed;
|
|
float fpart = (_elapsed - ipart);
|
|
alpha = (ipart % 2 == 0) ? fpart : (1f - fpart);
|
|
}
|
|
_target.getLocalTranslation().interpolate(_from, _to, alpha);
|
|
}
|
|
|
|
@Override
|
|
public Controller putClone (
|
|
Controller store, Model.CloneCreator properties)
|
|
{
|
|
Translator tstore;
|
|
if (store == null) {
|
|
tstore = new Translator();
|
|
} else {
|
|
tstore = (Translator)store;
|
|
}
|
|
super.putClone(tstore, properties);
|
|
tstore._from = _from;
|
|
tstore._to = _to;
|
|
tstore._duration = _duration;
|
|
tstore._repeatType = _repeatType;
|
|
return tstore;
|
|
}
|
|
|
|
@Override
|
|
public void read (JMEImporter im)
|
|
throws IOException
|
|
{
|
|
super.read(im);
|
|
InputCapsule capsule = im.getCapsule(this);
|
|
_from = (Vector3f)capsule.readSavable("from", null);
|
|
_to = (Vector3f)capsule.readSavable("to", null);
|
|
_duration = capsule.readFloat("duration", 1f);
|
|
_repeatType = capsule.readInt("repeatType", Controller.RT_WRAP);
|
|
}
|
|
|
|
@Override
|
|
public void write (JMEExporter ex)
|
|
throws IOException
|
|
{
|
|
super.write(ex);
|
|
OutputCapsule capsule = ex.getCapsule(this);
|
|
capsule.write(_from, "from", null);
|
|
capsule.write(_to, "to", null);
|
|
capsule.write(_duration, "duration", 1f);
|
|
capsule.write(_repeatType, "repeatType", Controller.RT_WRAP);
|
|
}
|
|
|
|
/** The beginning and end of the path. */
|
|
protected Vector3f _from, _to;
|
|
|
|
/** The duration of the path. */
|
|
protected float _duration;
|
|
|
|
/** What to do after reaching the destination. */
|
|
protected int _repeatType;
|
|
|
|
/** The accumulated amount of time elapsed. */
|
|
protected transient float _elapsed;
|
|
|
|
private static final long serialVersionUID = 1;
|
|
}
|