/*
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver;

import java.util.logging.Logger;

import net.sf.l2j.Config;
import net.sf.l2j.gameserver.model.L2Object;
import net.sf.l2j.gameserver.model.Location;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.pathfinding.Node;
import net.sf.l2j.util.Point3D;

/**
 *
 * @author  -Nemesiss-
 */
public class GeoData
{
	private static Logger _log = Logger.getLogger(GeoData.class.getName());
	private static GeoData _instance;

	public static GeoData getInstance()
    {
        if(_instance == null)
        {
        	if (Config.GEODATA > 0)
        		_instance = GeoEngine.getInstance();
        	else
        	{
        		_instance = new GeoData();
        		_log.info("Geodata Engine: Disabled.");
        	}
        }
        return _instance;
    }

    // Public Methods
    /**
     * @param x
     * @param y
     * @return Geo Block Type
     */
    public short getType  (int x, int y)
    {
        return 0;
    }
    /**
     * @param x
     * @param y
     * @param z
     * @return Nearles Z
     */
    public short getHeight(int x, int y, int z)
    {
        return (short)z;
    }
    /**
     * @param x
     * @param y
     * @param zmin
     * @param zmax
     * @param spawnid
     * @return
     */
    public short getSpawnHeight(int x, int y, int zmin, int zmax, int spawnid)
    {
        return (short)zmin;
    }
    /**
     * @param x
     * @param y
     * @return
     */
    public String geoPosition(int x, int y)
    {
    	return "";
    }

    /**
     * @param cha
     * @param target
     * @return True if cha can see target (LOS)
     */
    public boolean canSeeTarget(L2Object cha, L2Object target)
    {
    	//If geo is off do simple check :]
    	//Don't allow casting on players on different dungeon lvls etc
        return (Math.abs(target.getZ() - cha.getZ()) < 1000);
    }
    
    public boolean canSeeTarget(L2Object cha, Point3D worldPosition)
    {
        //If geo is off do simple check :]
        //Don't allow casting on players on different dungeon lvls etc
        return Math.abs(worldPosition.getZ() - cha.getZ()) < 1000;
    }

	public boolean canSeeTarget(int x, int y, int z, int tx, int ty, int tz)
	{
		// If geo is off do simple check :]
		// Don't allow casting on players on different dungeon lvls etc
		return (Math.abs(z - tz) < 1000);
	}
    /**
     * @param cha
     * @param target
     * @return True if cha can see target (LOS) and send usful info to PC
     */
    public boolean canSeeTargetDebug(L2PcInstance gm, L2Object target)
    {
        return true;
    }
    /**
     * @param x
     * @param y
     * @param z
     * @return Geo NSWE (0-15)
     */
    public short getNSWE(int x, int y, int z)
    {
        return 15;
    }
    /**
     * @param x
     * @param y
     * @param z
     * @param tx
     * @param ty
     * @param tz
     * @param instanceId
     * @return Last Location (x,y,z) where player can walk - just before wall
     */
    public Location moveCheck(int x, int y, int z, int tx, int ty, int tz, int instanceId)
    {
        return new Location(tx,ty,tz);
    }
    public boolean canMoveFromToTarget(int x, int y, int z, int tx, int ty, int tz, int instanceId)
    {
    	return true;
    }
    /**
     * @param gm
     * @param comment
     */
    public void addGeoDataBug(L2PcInstance gm, String comment)
    {
    	//Do Nothing
    }
    public static void unloadGeodata(byte rx, byte ry)
	{

	}

    public static boolean loadGeodataFile(byte rx, byte ry)
    {
    	return false;
    }
    
    public boolean hasGeo(int x, int y)
    {
    	return false;
    }
    
    public Node[] getNeighbors(Node n)
    {
    	return null;
    }
    
}
