/**
 * A shambling undead terror, hungry for brains and the flesh of the living.
 *
 * @author Zach Tomaszewski
 * @version 12 Sept 2001
 */
public class Zombie {

  private int location = 10;   //distance down the hallway
  private int hitPoints = 10;  //how much damage this zombie can take


  /**
   * Instructs the zombie to move.  Currently, this means
   * the zombie advances one step down the hallway.
   */
  public void move() {
    this.location = this.location - 1;
  }


  /**
   * This zombie takes damage from the given book, provided
   * the book's range is sufficient to reach the zombie.
   * 
   * @return Whether the book actually hit the zombie.
   */
  public boolean takeDamage(Book book) {
    if (book.getRange() < this.location) {
      return false;  //book didn't make it
    }else {
      this.hitPoints = this.hitPoints - book.getDamage();
      return true;
    }    
  }


  /**
   * Query whether zombie is still mobile.
   */
  public boolean isAlive() {
    return (this.hitPoints > 0);
  }

  /**
   * Returns this zombie's current location.
   * Currently, this means the zombie's distance down the hallway.
   */
  public int getLocation() {
    return this.location;
  }

  /**
   * This zombie attacks the given victim zombie.
   * The zombie making the attack takes 1 point of damage,
   * while the victim takes 5 points.
   */
  public void attack(Zombie victim) {
    this.hitPoints = this.hitPoints - 1;
    victim.hitPoints = victim.hitPoints - 5;
  }
  
  /**
   * Returns a string representation of this zombie, 
   * including its current hit points.
   */
  public String toString() {
    return "zombie (" + this.hitPoints + "hp)";
  }

  
  /**
   * Creates two zombies, and has one attack the other.
   */
  public static void main(String[] args) {    
    //create two zombies
    Zombie z1 = new Zombie();
    Zombie z2 = new Zombie();
    
    System.out.println("zombie 1: " + z1);
    System.out.println("zombie 2: " + z2);
    
    System.out.println("The first zombie atttacks the second.");
    z1.attack(z2);
    System.out.println("zombie 1: " + z1);
    System.out.println("zombie 2: " + z2);

    System.out.println("Then the first zombie attacks himself.");
    z1.attack(z1);
    System.out.println("zombie 1: " + z1);
    System.out.println("zombie 2: " + z2);

  }
  
}//end Zombie