lifeform.java

采用jibu实现的Java并行编程的一个例子。 演示的是生命游戏。

package gameoflife;

class Point
{
	public int x, y;

	public Point(int x, int y)
	{
		this.x = x;
		this.y = y;
	}	
}


/**************************************
 * Acts as a LifeForm factory. Can create three different life forms.
 **************************************/	
public abstract class LifeForm
{
	protected Point offset;
	protected Point[] points;

	public LifeForm(int x, int y)
	{
		offset = new Point(x,y);
	}

	public Point[] getPoints()
	{
		return points;
	}

	public Point getOffset()
	{
		return offset;
	}

	public static LifeForm createPulsar(int xOffset, int yOffset)
	{
		return new Pulsar(xOffset, yOffset);
	}

	public static LifeForm createGlider(int xOffset, int yOffset)
	{
		return new Glider(xOffset, yOffset);
	}

	public static LifeForm createLightweightSpaceship(int xOffset, int yOffset)
	{
		return new LightweightSpaceship(xOffset, yOffset);
	}

}

class Glider extends LifeForm
{
	public Glider(int x, int y)
	{
		super(x,y);

		points = new Point[] { new Point(1,0), new Point(1,1), new Point(2,1),
				new Point(0,2), new Point(2,2)
		};
		/** .xx
		 *  .xx
		    ..x    */
	}
}

class LightweightSpaceship extends LifeForm
{
	public LightweightSpaceship(int x, int y)
	{
		super(x,y);		
		
		points = new Point[] {  new Point(1,0), new Point(4,0),
				new Point(0,1), 
				new Point(0,2), new Point(4,2), new Point(0,3), new Point(1,3),
				new Point(2,3),new Point(3,3)
		};
		/**   .x.xx
		 *    x.xx.
		 *    ...xx
		      ...x.     */
	}
}

class Pulsar extends LifeForm
{
	public Pulsar(int x, int y)
	{
		super(x,y);		
		points = new Point[] { new Point(1,0), 
				new Point(0,1),new Point(1,1), new Point(2,1),
				new Point(0,2), new Point(2,2),
				new Point(0,3),new Point(1,3), new Point(2,3),
				new Point(1,4) }; 
	}
	/**  .xxx
	 *   xxxx
	 *   ..xx
	 *   ....
	     .x..      */
}