Nfwu/Painter

Something new I wrote to help with my debugging. Feel free to use, with or without giving credit.

package nfwu;

import robocode.*;
import java.util.Vector;
import java.util.Iterator;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.event.KeyEvent;

// Credit goes to David Alves for basic structure from DrawingBot.
// Added multiple layers for drawing on.
//Event Handlers to call from bot...

/*
	public void run(){
		//I want 2 layers
		Painter.init(2);
		//Register first layer to key '1'
		Painter.setupLayer(0, "Enemy Position", java.awt.event.KeyEvent.VK_1); 
		//Register second layer to key 'w'
		Painter.setupLayer(1, "Waves", java.awt.event.KeyEvent.VK_W);
	//other stuff
	}

	public void onKeyPressed(java.awt.event.KeyEvent e){
		if (Painter.onKeyPressed(e)) return;
		// other stuff
	}

	public void onKeyReleased(java.awt.event.KeyEvent e){
		if (Painter.onKeyReleased(e)) return;
		// other stuff
	}

	public void onPaint(java.awt.Graphics2D g){ Painter.onPaint(g); }

*/

// Interactive Display Controls:
//   Holding "key" displays the relevant layer until the key is released.
//   Typing Shift+"key" toggles permanent display of a layer.
//   Holding "H" shows a list of layer names and their keycodes.

public class Painter {
	public final static int HELP_KEY = KeyEvent.VK_H; //The 'h' key.
	public final static float MAGIC_FONT_HEIGHT_VALUE = 12.0f;
	static boolean isDisplayingHelpMessage = true;
	static boolean isDisplayingLayersList = false;
	static boolean isShiftPressed = false;

//Setup stuff
	public static void init(int numberOfLayers){//Call before every round
		System.out.println("This bot has debugging graphics.");
		System.out.println("Hold the '"+KeyEvent.getKeyText(HELP_KEY)+"' key with Paint enabled for help.");
		overlays = new DebugOverlay[numberOfLayers];
		isDisplayingLayersList = false;
		isShiftPressed = false;
	}

	public static void setupLayer(int oid, String name, int key, boolean defaultDisp){ //key must be a valid VK_ code!!!
		overlays[oid] = new DebugOverlay(name, key, defaultDisp);
	}

	public static void setupLayer(int oid, String name, int key){
		setupLayer(oid, name, key, false);
	}

//Draw Stuff (oid = the layer id)
	public static void drawObject(int oid, Renderable r){
		overlays[oid].renderables.add(r);
	}

	public static void drawLineRect(int oid, Color color, double x1, double y1, double x2, double y2){ //Rectangular Coords as input
		drawObject(oid, new Line(x1, y1, x2, y2, color)); 
	}

	public static void drawLinePol(int oid, Color color, double x1, double y1, double len, double ang){ //Relative polar Coords as input
		double x2 = x1 + Math.sin(ang) * len; //NOTE: Robocode Angles... www
		double y2 = y1 + Math.cos(ang) * len; 
		drawObject(oid, new Line(x1, y1, x2, y2, color));
	}	

	public static void drawCircle(int oid, Color color, double x, double y, double radius){
		drawObject(oid, new Circle(x, y, radius, color));
	}

	public static void drawPoint(int oid, Color color, double x, double y){
		drawObject(oid, new Dot(x, y, color));
	}

	public static void drawText(int oid, Color color, double x, double y, String text){
		drawObject(oid, new Text(text, x, y, color));
	}


//Handler Stuff
	public static boolean onKeyPressed(KeyEvent e) {
		switch (e.getKeyCode()) {
		case KeyEvent.VK_SHIFT:
			isShiftPressed = true;
			return true;
		case HELP_KEY:
			if (isShiftPressed) isDisplayingHelpMessage = false;
			else isDisplayingLayersList = true;
			return true;
		}

		if (isShiftPressed) return false;
		for (int i=0;i<overlays.length;++i){
			if (overlays[i].key == e.getKeyCode()){
				overlays[i].displayed = true;
				return true;
			}
		}

		return false;
	}



	public static boolean onKeyReleased(KeyEvent e) {
		switch (e.getKeyCode()) {
		case KeyEvent.VK_SHIFT:
			isShiftPressed = false;
			return true;
		case HELP_KEY:
			if (isShiftPressed) isDisplayingHelpMessage = false;
			else isDisplayingLayersList = false;
			return true;
		}

		//Toggle whether or not shift is pressed
		for (int i=0;i<overlays.length;++i){
			if (overlays[i].key == e.getKeyCode()){
				overlays[i].displayed = !overlays[i].displayed;
				return true;
			}
		}

		return false;
	}



	public static void onPaint(Graphics2D g){
		g.setColor(Color.WHITE);
		if (isDisplayingHelpMessage) g.drawString("Hold the '"+KeyEvent.getKeyText(HELP_KEY)+"' key for help.", 0.0f, 0.0f);
		else if (isDisplayingLayersList) g.drawString("List of avaliable debug graphics layers:", 0.0f, 0.0f);

		for (int j=0;j<overlays.length;++j){
			if (isDisplayingLayersList){
				g.setColor(Color.WHITE);
				g.drawString((overlays[j].displayed?"*":"  ")+"["+KeyEvent.getKeyText(overlays[j].key)+"]: "+overlays[j].name, 0.0f, (j+1)*MAGIC_FONT_HEIGHT_VALUE);
			}

			if (!overlays[j].displayed) continue;
			Iterator i = overlays[j].renderables.iterator();
			while(i.hasNext()){
				Renderable r = (Renderable) i.next();
				r.render(g);
			}
			overlays[j].renderables.clear();
		}

		if (isDisplayingLayersList){
			g.setColor(Color.WHITE);
			g.drawString("Holding the key in brackets displays the layer", 0.0f, (overlays.length+1)*MAGIC_FONT_HEIGHT_VALUE);
			g.drawString("Typing Shift+key toggles permanent display of a layer", 0.0f, (overlays.length+2)*MAGIC_FONT_HEIGHT_VALUE);
		}
	}



//Implementation

	static DebugOverlay[] overlays;
	private static class DebugOverlay {
		DebugOverlay(String name, int key, boolean defaultDisp){
			this.name = name;
			this.key = key;
			this.displayed = defaultDisp;
		}
		Vector renderables = new Vector();
		boolean displayed;
		int key; //Keycode to toggle display mode
		String name;
	}



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

	

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

	

	private static class Dot extends Circle {
		public Dot(double x, double y, Color color){
			super(x, y, 2, color); //super(x, y, 2, colour);
		}
	}

	

	private static class Line extends Renderable {
		double x1, y1, x2, y2;
		Color color;
		public Line(double x1, double y1, double x2, double y2, Color color){
			this.x1 = x1; this.y1 = y1; this.x2 = x2; this.y2 = y2;
			this.color = color;
		}
		public void render(Graphics2D g) {
			g.setColor(color);
			g.drawLine((int)Math.round(x1), (int)Math.round(y1), (int)Math.round(x2), (int)Math.round(y2));
		}
	}

	

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

		}
	}
}