Homing.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;

public class Homing extends Moving {
	int tgt;
	Coord tc;
	int v;
	double dist;

	public Homing(Gob gob, int tgt, Coord tc, int v) {
		super(gob);
		this.tgt = tgt;
		this.tc = tc;
		this.v = v;
	}

	public Coord getc() {
		Coord tc = this.tc;
		Gob tgt = gob.glob.oc.getgob(this.tgt);
		if (tgt != null)
			tc = tgt.rc;
		Coord d = tc.add(gob.rc.inv());
		double e = gob.rc.dist(tc);
		return (gob.rc.add((int) ((d.x / e) * dist), (int) ((d.y / e) * dist)));
	}

	public void move(Coord c) {
		dist = 0;
	}

	public void ctick(int dt) {
		double da = ((double) dt / 1000) / 0.06;
		dist += (da * 0.9) * ((double) v / 100);
	}
}