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.dynamicportal;
  
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import com.aionemu.gameserver.model.dynamicportal.DynamicPortalLocation;
  import com.aionemu.gameserver.model.dynamicportal.DynamicPortalStateType;
  import com.aionemu.gameserver.services.DynamicPortalService;
  
  /**
   * @author Falke_34
   */
  public abstract class DynamicPortal<DL extends DynamicPortalLocation> {
  
  	private boolean started;
  	private final DL dynamicPortalLocation;
  	protected abstract void stopDynamicPortal();
  	protected abstract void startDynamicPortal();
  	private final AtomicBoolean closed = new AtomicBoolean();
  	
  	public DynamicPortal(DL dynamicPortalLocation) {
  		this.dynamicPortalLocation = dynamicPortalLocation;
  	}
  	
  	public final void start() {
  		boolean doubleStart = false;
  		synchronized (this) {
  			if (started) {
  				doubleStart = true;
  			} else {
  				started = true;
  			}
  		} if (doubleStart) {
  			return;
  		}
  		startDynamicPortal();
  	}
  	
  	public final void stop() {
  		if (closed.compareAndSet(false, true)) {
  			stopDynamicPortal();
  		}
  	}
  	
  	protected void spawn(DynamicPortalStateType type) {
  		DynamicPortalService.getInstance().spawn(getDynamicPortalLocation(), type);
  	}
  	
  	protected void despawn() {
  		DynamicPortalService.getInstance().despawn(getDynamicPortalLocation());
  	}
  	
  	public boolean isClosed() {
  		return closed.get();
  	}
  	
  	public DL getDynamicPortalLocation() {
  		return dynamicPortalLocation;
  	}
  	
  	public int getDynamicPortalLocationId() {
  		return dynamicPortalLocation.getId();
  	}
  }
  