SurvivorShip.java

import java.awt.Color;

import ihs.apcs.spacebattle.BasicEnvironment;
import ihs.apcs.spacebattle.BasicSpaceship;
import ihs.apcs.spacebattle.ObjectStatus;
import ihs.apcs.spacebattle.Point;
import ihs.apcs.spacebattle.RadarResults;
import ihs.apcs.spacebattle.RegistrationData;
import ihs.apcs.spacebattle.commands.BrakeCommand;
import ihs.apcs.spacebattle.commands.IdleCommand;
import ihs.apcs.spacebattle.commands.RadarCommand;
import ihs.apcs.spacebattle.commands.RotateCommand;
import ihs.apcs.spacebattle.commands.ShipCommand;
import ihs.apcs.spacebattle.commands.ThrustCommand;

public class SurvivorShip extends BasicSpaceship {
	
	private RadarResults radar;
	
	@Override
	public ShipCommand getNextCommand(BasicEnvironment environment) {
		Point pos = environment.getShipStatus().getPosition();
		double speed = environment.getShipStatus().getSpeed();
		int orientation = environment.getShipStatus().getOrientation();

		if (environment.getRadar() != null)
			radar = environment.getRadar();
		
		if (radar == null) {
			System.out.println("No radar. Ping");
			return new RadarCommand(5);
		}
		
		// if anything is near me and in front of me, avoid it
		for (int i = 0; i < radar.getNumObjects(); i++) {
			ObjectStatus object = radar.get(i);
			double distToObject = object.getPosition().getDistanceTo(pos);
			if (distToObject < 100.0) {
				double angleToObject = 
						pos.getAngleTo(object.getPosition());
				double turn = angleToObject - orientation;
				
				if (turn > 0 && 
					turn < 60.0) {
					if (speed > 10) {
						System.out.println("Breaking to avoid " 
								+ object.getName());
						return new BrakeCommand(0.01);
					}

					// avoid
					System.out.println("Turning right to avoid " 
								+ object.getName());
					return new RotateCommand(-70);
				}
				else if (turn < 0 && 
						 turn > -60.0) {
					if (speed > 10) {
						System.out.println("Breaking to avoid " 
								+ object.getName());
						return new BrakeCommand(0.01);
					}
					
					System.out.println("Turning left to avoid " 
								+ object.getName());
					return new RotateCommand(70);
				}
			}
		}
		
		if (speed < 30) {
			System.out.println("Accelerating");
			return new ThrustCommand('B', 1.0, 0.9);
		}
		
		System.out.println("Ping");
		return new RadarCommand(5);
	}

	@Override
	public RegistrationData registerShip(
			int numImages, 
			int worldWidth,
			int worldHeight) {
	
		return new RegistrationData(
				"1stSurvivor", 
				new Color(128, 128, 128), 
				6);
	}

}