import java.awt.*;

/**
 * Basic interface for objects in the simple simulation world.
 * Any object that implements this can be added to the simulation.
 *
 * CSE143 demo, Au01, Sp03, Wi05
 * 
 * @author Hal Perkins
 * @version 10/18/01, 4/16/03, 1/19/05
 */

public interface SimThing {
  /**
   * Perform desired action for one simulation cycle.
   */
  public void action( );
  
  /**
   * Return the current horizontal location of the center of this SimThing in
   * simulator coordinates
   * @return the current x coordinate of this SimThing
   */
  public int getX();
  
  /**
   * Return the current vertical location of the center of this SimThing in
   * simulator coordinates
   * @return the current y coordinate of this SimThin
   */
  public int getY();
  
  /**
   * Draw a graphical representation of this SimThing at the given coordinates.
   * @param g Graphics context where the drawing should occur
   * @param h Horizontal screen coordinate where the center of this SimThing should appear
   * @param v Vertical screen coordinate where the center of this SimThing should appear
   */
  public void render(Graphics g, int h, int v);
}