BattleFieldTemplate.java

package tank;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.util.concurrent.TimeUnit;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class BattleFieldTemplate extends JPanel {

	boolean COLORDED_MODE = true;
	
	int tankX = 0;
	int tankY = 0;
	
	long speed = 10;
	int time=1;
	
	int tankDirection;
	
	void runTheGame() throws Exception
	{	
		while(true)
		{
		    moveToQuadrant(random(),random());
		    
		    TimeUnit.SECONDS.sleep(3);
		}	
	}
	
	static String getQuadrant(int x,int y)
	{	
		return 64*(x-1)+"_"+64*(y-1);
	}
	
	void moveToQuadrant(int x,int y)throws Exception
	{
		System.out.println("x="+x+" y="+y);
		System.out.println(getQuadrant(x,y));
		
	   	 int x1=64*(x-1);
	   	 int y1=64*(y-1);
		
		while(tankX!=x1 || tankY!=y1)
		{
		   if(tankX<x1)
			   move(4);
		   else
			   if(tankX>x1)
			       move(3);
			   else 
		           if(tankY<y1)
			           move(2);
		           else
			          if(tankY>y1)
				          move(1);
		}
	}
	
    int random ()throws Exception
	{ 
   		 TimeUnit.NANOSECONDS.sleep(time++);
   		 
		 return((int)(System.nanoTime()%9+1));
	}
    
	void move(int direction)throws Exception
	{
		tankDirection=direction;
		
	    int i=1;
	    
		while(i<=64)
		{
		   if(direction==1 && tankY>0)
			 tankY--;
		   else
			   if(direction==2 && tankY<512)
				  tankY++;
			   else
				   if(direction==3 && tankX>0)
					  tankX--;
				   else
					   if(direction==4 && tankX<512)
						  tankX++;
		   
		   
		   repaint();
		   TimeUnit.MILLISECONDS.sleep(speed);
		   i++;
		}
	}

	
	// Magic bellow. Do not worry about this now, you will understand everything in this course.
	// Please concentrate on your tasks only.

	final int BF_WIDTH = 576;
	final int BF_HEIGHT = 576;
	
	public static void main(String[] args) throws Exception {
		BattleFieldTemplate bf = new BattleFieldTemplate();
		bf.runTheGame();
	}

	public BattleFieldTemplate() throws Exception {
		JFrame frame = new JFrame("BATTLE FIELD, DAY 2");
		frame.setLocation(500, 150);
		frame.setMinimumSize(new Dimension(BF_WIDTH+18, BF_HEIGHT + 40));
		frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
		frame.getContentPane().add(this);
		frame.pack();
		frame.setVisible(true);
	}

	@Override
	protected void paintComponent(Graphics g) {
		super.paintComponent(g);
		
		int i = 0;
		Color cc;
		for (int v = 0; v < 9; v++) {
			for (int h = 0; h < 9; h++) {
				if (COLORDED_MODE) {
					if (i % 2 == 0) {
						cc = new Color(252, 241, 177);
					} else {
						cc = new Color(233, 243, 255);
					}
				} else {
					cc = new Color(180, 180, 180);
				}
				i++;
				g.setColor(cc);
				g.fillRect(h * 64, v * 64, 64, 64);
			}
		}
		
		g.setColor(new Color(255, 0, 0));
		g.fillRect(tankX, tankY, 64, 64);
	}

}