David Alves/DrawingBot

This code is free to use for any purpose whatsoever. Giving credit to me somewhere is nice, but not required.

package davidalves.sample;

import robocode.*; import java.util.*; import java.awt.*; import java.awt.geom.Point2D; import java.io.*;

public class DrawingBot extends TeamRobot{

	public DrawingBot(){
		renderables = new Vector();
	}

	private static abstract class Renderable{
	public abstract void render(Graphics2D g);

	private static class Circle extends Renderable{
		Point2D.Double center;
		double radius;
		Color color;
		public Circle(Point2D.Double center, double radius, Color color){
			this.center = center;
			this.radius = radius;
			this.color = color;
		}
		public void render(Graphics2D g) {
			g.setColor(color);
			g.drawOval(	(int)Math.round(center.x - radius),
						(int)Math.round(center.y - radius),
						(int)Math.round(2 * radius),
						(int)Math.round(2 * radius));
		}
	}

	private static class Dot extends Renderable{
		Point2D.Double point;
		double radius;
		Color color;
		public Dot(Point2D.Double point, Color color){
			this.point = point;
			this.radius = 2;
			this.color = color;
		}
		public void render(Graphics2D g) {
			g.setColor(color);
			g.fillOval(	(int)Math.round(point.x - radius),
						(int)Math.round(point.y - radius),
						(int)Math.round(2 * radius),
						(int)Math.round(2 * radius));
		}
	}

	private static class Line extends Renderable{
		Point2D.Double p1, p2;
		Color color;

		double radius;
		public Line(Point2D.Double p1, Point2D.Double p2, Color color){
			this.p1 = p1;
			this.p2 = p2;
			this.color = color;
		}
		public void render(Graphics2D g) {
			g.setColor(color);
			g.drawLine(	(int)Math.round(p1.x),
						(int)Math.round(p1.y),
						(int)Math.round(p2.x),
						(int)Math.round(p2.y));
		}
	}

	private static class Text extends Renderable{
		String text;
		double x, y;
		Color color;

		double radius;
		public Text(String text, double x, double y, Color color){
			this.text = text;
			this.x = x;
			this.y = y;
			this.color = color;
		}
		public void render(Graphics2D g) {
			g.setColor(color);
			g.drawString(text, (float)x, (float)y);
		}
	}
	}

	public static Vector renderables;

	public void onPaint(Graphics2D g){
		Iterator i = renderables.iterator();
		while(i.hasNext()){
			Renderable r = (Renderable) i.next();
			r.render(g);
		}
		renderables.clear();
	}

	public static void drawLine(Point2D.Double p1, Point2D.Double p2, Color color){
		renderables.add(new Renderable.Line(p1, p2, color));
	}

	public static void drawCircle(Point2D.Double center, double radius, Color color){
		renderables.add(new Renderable.Circle(center, radius, color));
	}

	public static void drawPoint(Point2D.Double p1, Color color){
		renderables.add(new Renderable.Dot(p1, color));
	}

	public static void drawText(String text, double x, double y, Color color){
		renderables.add(new Renderable.Text(text, x, y, color));
	}

}