/*
 * Licensed Materials - Property of Rogue Wave Software, Inc. 
 * © Copyright Rogue Wave Software, Inc. 2014, 2017 
 * © Copyright IBM Corp. 2009, 2014
 * © Copyright ILOG 1996, 2009
 * All Rights Reserved.
 *
 * Note to U.S. Government Users Restricted Rights:
 * The Software and Documentation were developed at private expense and
 * are "Commercial Items" as that term is defined at 48 CFR 2.101,
 * consisting of "Commercial Computer Software" and
 * "Commercial Computer Software Documentation", as such terms are
 * used in 48 CFR 12.212 or 48 CFR 227.7202-1 through 227.7202-4,
 * as applicable.
 */
package simulation;

import ilog.views.maps.defense.symbology.app6a.IlvApp6aSymbol;
import ilog.views.sdm.IlvSDMEngine;

/**
 * Class for enemy unit being targets of missiles.
 * 
 * @see Missile
 * 
 */
public class Target extends Mobile {
  private boolean clockwiseMovement;

  Target(IlvSDMEngine sym) {
    this("Target", sym); //$NON-NLS-1$
  }

  /**
   * Creates a target with a different symboloc tag.
   * 
   * @param tag
   *          tag (used in the CSS file)
   * @param sym
   *          symbology.
   */
  protected Target(String tag, IlvSDMEngine sym) {
    super(tag, sym, "SNAPCF-----CUS-");//$NON-NLS-1$
    if (SimulationContext.random() > 0.5) {
      double rnd = SimulationContext.random();
      String a;
      if (rnd > 0.75) {
        a = "A";//$NON-NLS-1$
      } else if (rnd > 0.5) {
        a = "P";//$NON-NLS-1$
      } else if (rnd > 0.25) {
        a = "F";//$NON-NLS-1$
      } else {
        a = "N";//$NON-NLS-1$
      }
      setSymbolProperty(IlvApp6aSymbol.ID_CODE, "S" + a + "APCF-----CUS-", true);//$NON-NLS-1$//$NON-NLS-2$
    }
    double lon0 = SimulationContext.getRandomLongitude();
    double lat0 = SimulationContext.getRandomLatitude();
    symbol.setLocation(null, lon0, lat0);
    setHorizontalSpeed(((int) (SimulationContext.random() * 20) + 10) * 5.0);
    setVerticalSpeed(SimulationContext.random() * 6.0 - 3.0);
    clockwiseMovement = (SimulationContext.random() > 0.5);
    updateLocation();
  }

  Override
  double getDirection() {
    double v = (getLastUpdateTime() / (10000 * getHorizontalSpeed() / SimulationContext.getTimeAcceleration()));
    double l = (v - Math.floor(v));
    if (!clockwiseMovement)
      l = -l;
    return l * 2 * Math.PI - Math.PI;
  }
}