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Board.java
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/**
* @author Cecilia Watt
* Holds the information for a player's board in the game of Battleship.
*/
import java.lang.ArrayIndexOutOfBoundsException;
public class Board {
private int[][] board;
public Board()
{
/**
* instantiates a new 10x10 board.
*/
board = new int[10][10];
}
public void displaytoMe()
{
/**
* Displays the board to the player.
* O denotes parts of ships that have not yet been hit.
* X denotes where ships have been hit.
* - records enemy misses.
*/
System.out.println();
System.out.println("This is your board. O: your ships / X: where ships are hit / -: enemy misses");
System.out.println(" | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |");
System.out.println("--+---+---+---+---+---+---+---+---+---+---|");
for(int x=0; x<board.length; x++)
{
System.out.print(x + " |");
for(int y = 0; y<board.length; y++)
{
System.out.print(" ");
if(board[x][y] == 1 || board[x][y] == 2 || board[x][y] == 3 || board[x][y] == 4 | board[x][y] == 5)
{
System.out.print("O");
}
if(board[x][y] == 6)
{
System.out.print("X");
}
if(board[x][y] == 11)
{
System.out.print("-");
}
if(board[x][y] == 0)
{
System.out.print(" ");
}
System.out.print(" ");
System.out.print("|");
}
System.out.println();
System.out.println("--+---+---+---+---+---+---+---+---+---+---|");
}
}
public void displaytoEnemy()
{
/**
* Displays the board to the enemy.
* X denotes where the enemy has managed to hit a ship.
* - denotes where the enemy has hit and missed.
*/
System.out.println("This is the enemy board. X: hits / -: misses");
System.out.println(" | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |");
System.out.println("--+---+---+---+---+---+---+---+---+---+---|");
for(int x=0; x<board.length; x++)
{
System.out.print(x + " |");
for(int y = 0; y<board.length; y++)
{
System.out.print(" ");
if(board[x][y] == 1 || board[x][y] == 2 || board[x][y] == 3 || board[x][y] ==4 | board[x][y] == 5)
{
System.out.print(" ");
}
if(board[x][y] == 6)
{
System.out.print("X");
}
if(board[x][y] == 11)
{
System.out.print("-");
}
if(board[x][y] == 0)
{
System.out.print(" ");
}
System.out.print(" ");
System.out.print("|");
}
System.out.println();
System.out.println("--+---+---+---+---+---+---+---+---+---+---|");
}
}
public boolean checkAvailibility(boolean horizontal, int length, int startx, int starty)
/**
* Checks whether a ship can be placed at specific coordinates.
*
* @param horizontal Whether the user wants the ship to be horizontal/vertical.
* @param length Length of the ship.
* @param startx Starting location for the ship on the vertical axis.
* @param starty Starting location for the ship on the horizontal axis.
*
* @return valid Returns true when the ship can be placed, given these specifications.
*/
{
boolean valid = false;
try
{
if (horizontal == true)
{
for (int n=0; n<length; n++)
{
if (board[startx][starty+n] == 0)
{
valid = true;
}
else
{
valid = false;
break;
}
}
}
if (horizontal == false)
{
for (int n=0; n<length; n++)
{
if (board[startx+n][starty] == 0)
{
valid = true;
}
else
{
valid = false;
break;
}
}
}
}
catch (ArrayIndexOutOfBoundsException e)
{
valid = false;
}
return valid;
}
public void addShip(boolean horizontal, int length, int startx, int starty, int type)
/**
* Adds a ship to the grid at a specified location.
*
* @param horizontal Whether the user wants the ship to be horizontal/vertical.
* @param length Length of the ship.
* @param startx Starting location for the ship on the vertical axis.
* @param starty Starting location for the ship on the horizontal axis.
* @param type The type of ship.
*
*/
{
if (horizontal == true)
{
for(int n = 0; n<length; n++)
{
board[startx][starty+n] = type;
}
}
if (horizontal == false)
for(int n = 0; n<length; n++)
{
board[startx+n][starty] = type;
}
}
public int checkHit(Coordinates c)
/**
* Checks whether there is a ship at given coordinates.
*
* @param c Coordinates at which the enemy player has chosen to attack.
* @return int 0 - miss, 1-5 - hit ship
*/
{
int x = c.getX();
int y = c.getY();
int status = 0;
if (board[x][y] == 0)
{
board[x][y] = 7;
status = 0;
}
if (board[x][y] > 0 && board[x][y] < 6)
{
status = board[x][y];
}
return status;
}
public void receiveHit(Coordinates c)
/**
* Deals with when the player's ship has been hit.
*
* @param c - Coordinates that have been attacked.
*/
{
board[c.getX()][c.getY()] = 6;
}
public void receiveMiss(Coordinates c)
/**
* Deals with when the player's board has been hit, but the
* attack has missed a ship.
*
* @param c - Coordinates that have been attacked.
*/
{
board[c.getX()][c.getY()] = 11;
}
}