// SRVector Class
// SRVector.java

// Project 3, CIS 525
// Fall 2000
// By Terrence Burrows

// Imports
import java.awt.*;

/** This class extends the SpriteVector class and overrides the methods
    "isPointInside" and "collision".  This allows the program to distinguish
    which Sprite is being clicked (because of z-order it would by default
    indicate the "gun" Sprite) and eliminate Sprite collision detection.
    This class is taken directly from the book "Teach yourself
    Internet Game Programming with Java in 21 days" by Michael Morrison.
    See chapter 13 for details.  */
public class SRVector extends SpriteVector {
  public SRVector(Background back) {
    super(back);
  }

  /** This method is necessary to determine when and "Eye" class
      has been clicked by the mouse otherwise because of the z-ordering
      of bitmap images the "gun" image would always be returned. */
  Sprite isPointInside(Point pt) {
    // Iterate backward through the sprites, testing each
    for (int i = (size() - 1); i >= 0; i--) {
      Sprite s = (Sprite)elementAt(i);
      if ((s.getClass().getName().equals("Eyes")) &&
        s.isPointInside(pt))
        return s;
    }
    return null;
  }

  /** None of the Sprites need collision handling so this
      method is overridden to do nothing.  */
  protected boolean collision(int i, int iHit) {
    // Do nothing!
    return false;
  }
}