<< Mouse Motion Listener Application | Applications | Button Application >>

Here is some starter code for dueling robots.

Robot.java

public class Robot 
{
	//Probability to defend, hit, and heal
	private double defense, offense, healing;
	private int health;
	private String name;
	//other ideas for instance fields:
	// color, teamAffiliation
	public Robot(String n, double d, double o, double h){
		name=n;
		defense=d;
		offense=o;
		healing=h;
		health=100;
	}
	public Robot(){
		this("Bot",.1, .75, .1);
	}
	public Robot(String n){
		this(n,.5, .5, .5);
	}
	public String toString(){
		return name+": "+health+"%";
	}
	public int health(){
		return health;
	}
	public String name(){
		return name;
	}
	public boolean heal(int amt){
		boolean result=false;
		if (Math.random()<healing){
			health+=amt;
			result=true;
		}
		return result;
	}
	public boolean attack(Robot other){
		boolean result=false;
		if ( Math.random()<offense){
			result=other.hit(5);
		}
		return result;
	}
	private boolean hit(int amt) {
		boolean result=false;
		if (Math.random()>defense){
			health-=amt;
			result=true;
		}
		return result;
	}
}

DuelingRobots.java

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class DuelingRobots extends JPanel implements KeyListener
{
	public static int WIDTH=900;
	public static int HEIGHT=300;
    private Font titleFont, regularFont;
    private Robot[] contestant;
    private String message;
    private int roundNo;

    public DuelingRobots()
    {
    		//initialize variables here...
    		titleFont = new Font("Roman", Font.BOLD, 18);
    		regularFont = new Font("Sans", Font.PLAIN, 12);
    		contestant = new Robot[2];
    		contestant[0]=new Robot("bot 0");
    		contestant[1]=new Robot("bot 1");
    		message="New Game";
    		roundNo=0;
    }
	public static void main(String[] args) {
		DuelingRobots app= new DuelingRobots();
		JFrame window = new JFrame("Dueling Robots");
		window.setSize(WIDTH, HEIGHT);
		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		window.getContentPane().add(app);
		window.addKeyListener(app);
		window.setVisible(true);

	}
	public void paintComponent(Graphics g){
		super.paintComponent(g);
		g.setColor(Color.WHITE);
		g.fillRect(0, 0, getWidth(),getHeight());
		g.setColor(Color.BLUE);
		g.setFont(titleFont);
		g.drawString("Dueling Robots", 20, 20);
		g.drawString(contestant[0].toString(), 50, 100);
		g.fillRect(50, 60, contestant[0].health(), 20);
		g.setColor(Color.RED);
		g.drawString(contestant[1].toString(), 250, 100);
		g.fillRect(250, 60, contestant[1].health(), 20);

		g.setColor(Color.BLACK);
		g.drawString("Press a key for next turn", 20, 200);
		g.drawRect(50, 60, 100, 20);
		g.drawRect(250, 60, 100, 20);

		g.setColor(Color.BLUE);
		g.drawString("Round "+roundNo, 20, 130);
		g.drawString(message, 20, 150);
		g.setFont(regularFont);
		g.drawString("Version 1.0", 20, 40);
		g.setColor(Color.MAGENTA);



	}
	// update is a workaround to cure Windows screen flicker problem
	public void update(Graphics g){
		paint(g);
	}

	// These 3 methods need to be declares to implement the KeyListener Interface
	@Override
	public void keyTyped(KeyEvent e) {}

	@Override
	public void keyPressed(KeyEvent e) {
		if(contestant[0].health()>=0 && contestant[1].health()>=0){
			message=doTurn();
			roundNo++;
		}else message="Game Over";

		repaint();
	}

	private String doTurn() {
		String result=contestant[0].name()+"'s attack is ";
		if (!contestant[0].attack(contestant[1]) ){
			result+="not ";
		}
		result+="sucessful; "+contestant[1].name()+"'s attack is ";
	    if (!contestant[1].attack(contestant[0]) ){
	    		result+="not ";
		}
	    result+="sucessful. ";
	    for (Robot bot:contestant)
	    		if (bot.heal(1))
	    		result+=bot.name()+" heals. ";
		return result;
	}
	@Override
	public void keyReleased(KeyEvent e) {}

}