content: /**
   * This file is part of Aion-Lightning <aion-lightning.org>.
   *
   *  Aion-Lightning 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.
   *
   *  Aion-Lightning 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 Aion-Lightning.
   *  If not, see <http://www.gnu.org/licenses/>.
   */
  package com.aionemu.gameserver.services.svsservice;
  
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import com.aionemu.gameserver.model.svs.SvsLocation;
  import com.aionemu.gameserver.model.svs.SvsStateType;
  import com.aionemu.gameserver.services.SvsService;
  
  public abstract class Panesterra<PL extends SvsLocation> {
  
  	private boolean started;
  	private final PL svsLocation;
  
  	protected abstract void stopSvs();
  
  	protected abstract void startSvs();
  
  	private final AtomicBoolean finished = new AtomicBoolean();
  
  	public Panesterra(PL svsLocation) {
  		this.svsLocation = svsLocation;
  	}
  
  	public final void start() {
  		boolean doubleStart = false;
  		synchronized (this) {
  			if (started) {
  				doubleStart = true;
  			}
  			else {
  				started = true;
  			}
  		}
  		if (doubleStart) {
  			return;
  		}
  		startSvs();
  	}
  
  	public final void stop() {
  		if (finished.compareAndSet(false, true)) {
  			stopSvs();
  		}
  	}
  
  	protected void spawn(SvsStateType type) {
  		SvsService.getInstance().spawn(getSvsLocation(), type);
  	}
  
  	protected void despawn() {
  		SvsService.getInstance().despawn(getSvsLocation());
  	}
  
  	public boolean isFinished() {
  		return finished.get();
  	}
  
  	public PL getSvsLocation() {
  		return svsLocation;
  	}
  
  	public int getSvsLocationId() {
  		return svsLocation.getId();
  	}
  }
  