AnimSprite.java

/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  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.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.util.Collection;
import java.util.LinkedList;

public class AnimSprite extends ImageSprite {
	private Frame[] frames;
	private int fno, te;
	public static final Factory fact = new Factory() {
		public Sprite create(Owner owner, Resource res, Message sdt) {
			if (res.layer(Resource.animc) == null)
				return (null);
			return (new AnimSprite(owner, res, sdt));
		}
	};

	private static class Frame {
		Collection<Part> parts = new LinkedList<Part>();
		int dur;
		Object id;
	}

	private AnimSprite(Owner owner, Resource res, Message sdt) {
		super(owner, res, sdt);
		boolean[] flags = decflags(sdt);
		Collection<Part> stp = new LinkedList<Part>();
		for (Resource.Image img : res.layers(Resource.imgc)) {
			if ((img.id < 0) || ((img.id < flags.length) && flags[img.id]))
				stp.add(new ImagePart(img));
		}
		frames = null;
		for (Resource.Anim anim : res.layers(Resource.animc)) {
			if ((anim.id < 0) || ((anim.id < flags.length) && flags[anim.id])) {
				if (frames == null) {
					frames = new Frame[anim.f.length];
				} else {
					if (anim.f.length != frames.length)
						throw (new ResourceException("Attempting to combine animations of different lengths", res));
				}
				for (int i = 0; i < frames.length; i++) {
					Frame f;
					if (frames[i] == null) {
						f = frames[i] = new Frame();
						f.dur = anim.d;
						for (Part p : stp)
							f.parts.add(p);
						f.id = (res.name + ":" + res.ver + ":" + i).intern();
					}
					f = frames[i];
					for (int o = 0; o < anim.f[i].length; o++)
						f.parts.add(new ImagePart(anim.f[i][o]));
				}
			}
		}
		if (frames == null) {
			frames = new Frame[1];
			Frame f = frames[0] = new Frame();
			f.dur = 10000;
			f.parts = stp;
			f.id = (res.name + ":" + res.ver).intern();
		}
		fno = 0;
		te = 0;
		curf = frames[0].parts;
	}

	public boolean tick(int dt) {
		boolean rv = false;
		te += dt;
		while (te > frames[fno].dur) {
			te -= frames[fno].dur;
			if (++fno >= frames.length) {
				fno = 0;
				rv = true;
			}
		}
		curf = frames[fno].parts;
		return (rv);
	}

	public Object stateid() {
		return (frames[fno].id);
	}
}