Maze-L1

MineField.java

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class MineField {

	public static int row;
	public static int col;

	public static void main(String[] args) {
		// Project: Escape the MineField

		char[][] array = new char[5][5];

		// fill array
		for (int row = 0; row < array.length; row++) {
			for (int col = 0; col < array[row].length; col++) {
				array[row][col] = '-';
			} // end row
		} // end col

		// Add the player in position 2,2
		array[2][2] = 'P';
		row=2;
		col=2;

		// Add 3 Bombs
		placeBomb(array);
		placeBomb(array);
		placeBomb(array);

		// Add 2 exits in the margins
		placeExit(array);
		placeExit(array);
		System.out.println("Original Board: ");
		printBoard(array);
		
		int count=0;
		while (count<8)
		{	
			// This changes row and col and erases the player from board
			movePlayer(array,row,col);
			
			if(checkBomb(array, row, col))
			{
				System.out.println("You hit a bomb!");
				break;
			}
			else if(checkExit(array, row, col))
			{
				System.out.println("You win! You found the Exit!!");
				break;
			}
			
			// Draw the player's new location
			array[row][col] = 'P';
			printBoard(array);
			count++;
		}

	}

	public static void printBoard(char[][] board)
	{
		// print array
		for (int row = 0; row < board.length; row++) {
			for (int col = 0; col < board[row].length; col++) {
				System.out.print(board[row][col]+" ");
			} // end row
			System.out.println();
		}
			// end col
	}
//===================================================
	public static void placeBomb(char[][] board) {
		Random rnd = new Random();
		int y = rnd.nextInt(board.length);
		int x = rnd.nextInt(board[y].length);

		while (board[y][x] != '-') {
			y = rnd.nextInt(board.length);
			x = rnd.nextInt(board[y].length);
		}

		board[y][x] = 'B';
	}
//=====================================================
	public static void placeExit(char[][] board) {
		Random rnd = new Random();

		int y = 0;
		int x = 0;
		y = rnd.nextInt(board.length);
		x = rnd.nextInt(board[y].length - 1);

		while (board[y][x] != '-' 
				|| (y >= 1 && y < board.length - 1 
				 && x >= 1 && x < board[y].length - 1))
		{
			y = rnd.nextInt(board.length);
			x = rnd.nextInt(board[y].length - 1);
		}

		board[y][x] = 'E';
	}
	//=====================================
	public static boolean checkBomb(char[][] board, 
							int row, int col) {
		if (board[row][col]=='B')
			return true;
		else 
			return false;
	}
	//=====================================
	public static boolean checkExit(char[][] board, 
								int row, int col) {
			if (board[row][col]=='E')
				return true;
			else 
				return false;
	}
	//=============================================
	public static void setRow(int myRow) {
		row=myRow;
	}
	//====================================
	public static void setCol(int myCol) {
		col=myCol;
	}
	// =======================================
	public static void movePlayer(char[][] board, 
							int row, int col) {
		Scanner kb = new Scanner(System.in);

		String allowedDirections = "";
		System.out.println("row: " + row + ", col: " + col);
		if (row > 0) 						allowedDirections += " N";
		if (row < board.length - 1) 		allowedDirections += " S";
		if (col > 0) 						allowedDirections += " W";
		if (col < board[row].length - 1) 	allowedDirections += " E";
		
		String move = "X";
		while (!allowedDirections.contains(move.toUpperCase())) {
			System.out.print("\nEnter a direction to move: " + 
							"\n" + allowedDirections + ": ");
			move = kb.next();
		}
		
		board[row][col]='-';
		
		if (move.equalsIgnoreCase("N")) {
			// move north
			setRow(--row);			
		} else if (move.equalsIgnoreCase("S")) {
			// move south
			setRow(++row);
		} else if (move.equalsIgnoreCase("E")) {
			// move east
			setCol(++col);
		} else if (move.equalsIgnoreCase("W")) {
			// move west
			setCol(--col);
		} 
		else {
			
		};
	}
}