Planet.java

public class Planet implements Cloneable {
    // Initializes a planet.
    public Planet(int planetID,
                  int owner,
		  int numShips,
		  int growthRate,
		  double x,
		  double y) {
	this.planetID = planetID;
	this.owner = owner;
	this.numShips = numShips;
	this.growthRate = growthRate;
	this.x = x;
	this.y = y;
    }

    // Accessors and simple modification functions. These should be mostly
    // self-explanatory.
    public int PlanetID() {
	return planetID;
    }

    public int Owner() {
	return owner;
    }

    public int NumShips() {
	return numShips;
    }

    public int GrowthRate() {
	return growthRate;
    }

	// coordinates in the space
    public double X() {
	return x;
    }

    public double Y() {
	return y;
    }

    public void Owner(int newOwner) {
	this.owner = newOwner;
    }
    
    // Not allowed for now
    /*
    public void NumShips(int newNumShips) {
	this.numShips = newNumShips;
    }
    */
	
    public void AddShips(int amount) {
	numShips += amount;
    }

    public void RemoveShips(int amount) {
	numShips -= amount;
    }

    private int planetID;
    private int owner;
    private int numShips;
    private int growthRate;
    private double x, y;

    private Planet (Planet _p) {
	planetID = _p.planetID;
	owner = _p.owner;
	numShips = _p.numShips;
	growthRate = _p.growthRate;
	x = _p.x;
	y = _p.y;
    }

    public Object clone() {
	return new Planet(this);
    }
}