TanksRandom.java

package tanks;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
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 direction = 0;
	
	
	void runTheGame() throws Exception {
		moveRandom();
	}

	void moveRandom() throws Exception {
		while (true) {
			move(random());
		}
	}

	int random() throws Exception {
		String str = String.valueOf(System.currentTimeMillis());
		int result = Integer.parseInt(str.substring(12));
		if (result==1 || result==2 || result==3){
			direction = 1;
		}
		else if (result==4 || result==5){
			direction = 2;
		}
		else if (result==6 || result==7){
			direction = 3;
		}
		else if (result==8 || result==9 || result == 0){
			direction = 4;
		}
		return direction;
		
	}
		void move(int direction) throws Exception {
			int step = 1;
			int moveTop = tankY - 64;
			int moveRight = tankX + 64;
			int moveBottom = tankY + 64;
			int moveLeft = tankX - 64;
						
			if (direction == 1) {
				if (tankY <= 0) {
					System.out.println("UPS! THE WALL!");
				}
				else {
					System.out.println("Go up");
					while (tankY > moveTop) {
						tankY -= step;
						repaint();
						Thread.sleep(speed);
					}
				}
			}
			else if (direction == 2) {
				if (tankY >= 8*64) {
					System.out.println("UPS! THE WALL!");
				}
				else {
					System.out.println("Go down");
					while (tankY < moveBottom) {
						tankY += step;
						repaint();
						Thread.sleep(speed);
					}
				}			
			}
			else if (direction == 3) {
				if (tankX <= 0) {
					System.out.println("UPS! THE WALL!");
				}
				else {
					System.out.println("to left");
					while (tankX > moveLeft) {
						tankX -= step;
						repaint();
						Thread.sleep(speed);
					}
				}			
			}
			else if (direction == 4) {
				if (tankX >= 8*64) {
					System.out.println("UPS! THE WALL!");
				}
				else {
					System.out.println("to right");
					while (tankX < moveRight) {
						tankX += step;
						repaint();
						Thread.sleep(speed);
					}
					}
				}			
			}
				
		
	

	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, BF_HEIGHT + 22));
		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);
	}

}