moveToQuadrant

/*
 * Copyright (c) 2014 kademika.com
 */
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
import javax.swing.text.AbstractDocument.LeafElement;

public class BattleFieldTemplate extends JPanel {
	boolean COLORDED_MODE = true;
	int desk_step = 64;
	int tank_move_step = 7;
	long tank_speed = 500;
	int tankX = 0;
	int tankY = 0;

	void runTheGame() throws Exception {
		tankX = desk_step * 5;
		tankY = desk_step * 5;
		moveToQuadrant("i", "9");
	}

	void moveToQuadrant(String v, String h) throws InterruptedException {
		String str_v = "abcdefghi";
		String currnetTankPos = getQuadrant(tankY, tankX);
		String movetoPos = v + "_" + h;
		int vCurrent = str_v.indexOf(currnetTankPos.substring(0, currnetTankPos.indexOf("_"))) + 1;
		int hCurrent = Integer.parseInt(currnetTankPos.substring(currnetTankPos.indexOf("_") + 1, currnetTankPos.length()));
		int vPurp = str_v.indexOf(v) + 1;
		int hPurp = Integer.parseInt(h);

		// moving UP-DOWN
		if (vCurrent != vPurp) {
			while (vCurrent != vPurp) {
				if (vCurrent < vPurp) {
					move(2);
				} else {
					move(1);
				}
				currnetTankPos = getQuadrant(tankY, tankX);
				vCurrent = str_v.indexOf(currnetTankPos.substring(0,
						currnetTankPos.indexOf("_"))) + 1;
				vPurp = str_v.indexOf(v) + 1;
				System.out.println(vCurrent + "    " + vPurp);
			}
		}

		// moving LEFT-RIGHT
		System.out.println(hCurrent);
		if (hCurrent != hPurp) {
			while (hCurrent != hPurp) {
				if (hCurrent < hPurp) {
					move(4);
				} else {
					move(3);
				}
				currnetTankPos = getQuadrant(tankY, tankX);
				hCurrent = Integer.parseInt(currnetTankPos.substring(
						currnetTankPos.indexOf("_") + 1,
						currnetTankPos.length()));
				hPurp = Integer.parseInt(h);
				System.out.println(hCurrent + "    " + hPurp);
			}
		}

	}

	void moveRandom() throws InterruptedException {
		while (true) {
			int i = getRandom();
			System.out.println(i);
			move(i);
			repaint();
			Thread.sleep(tank_speed);
		}
	}

	int getRandom() {
		String str = String.valueOf(System.currentTimeMillis());

		int y = 0;
		for (int i = 0; i < str.length() - 1; i++) {
			if ((i % 2) == 0) {
				y += Integer.parseInt(str.valueOf(str.charAt(i)));
				System.out.print(i + " ");
			} else {
				y -= Integer.parseInt(str.valueOf(str.charAt(i)));
				System.out.print(i + " ");
			}
		}
		y = (Math.abs(y) % 4 + 1);
		System.out.println("y: " + y);
		return y;
	}

	// 1 - UP, 2 - DOWN, 3 - LEFT, 4 - RIGHT;
	void move(int direction) throws InterruptedException {
		System.out.println("ready to move...");
		if (direction == 1) {
			if ((tankY - desk_step) < 0) {
				System.out.println("there is no way to move!");
			} else {
				tankY -= desk_step;
				System.out.println("move 1 step UP");
			}
			repaint();
		}

		if (direction == 2) {
			if ((tankY + desk_step) >= BF_HEIGHT) {
				tankY = BF_HEIGHT - desk_step;
				System.out.println("there is no way to move!");
			} else {
				tankY += desk_step;
				System.out.println("move 1 step DOWN");
			}
			repaint();
		}

		if (direction == 3) {
			if ((tankX - desk_step) < 0) {
				System.out.println("there is no way to move!");
			} else {
				tankX -= desk_step;
				System.out.println("move 1 step LEFT");
			}
			repaint();
		}

		if (direction == 4) {
			if ((tankX + desk_step) >= BF_WIDTH) {
				tankX = BF_WIDTH - desk_step;
				System.out.println("there is no way to move!");
			} else {
				tankX += desk_step;
				System.out.println("move 1 step RIGHT");
			}
			repaint();
		}
		Thread.sleep(tank_speed);
	}

	static String getQuadrant(String v, String h) {
		String str_v = "abcdefghi";
		return (str_v.indexOf(v) + 1) * 64 + "_" + (Integer.valueOf(h) * 64);
	}

	String getQuadrant(int x, int y) {
		String str_v = "abcdefghi";
		return str_v.charAt(x / desk_step) + "_" + ((y / 64) + 1);
	}

	// 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 + 14, BF_HEIGHT + 36));
		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(135, 206, 255);
					} 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(218, 112, 214));
		g.fillRect(tankX, tankY, 64, 64);
	}

}