此游戏使用2d数组（7x7），并使用两个数组列表来存储飞船（长度为2,3,4）和用户猜测。用户首先键入每艘船的行和列以及方向（向下或向右延伸）。然后将空白板打印到控制台，用户将猜测行和列。如果那个地方有一艘船“命中！”打印到控制台，否则“未命中！”打印。每次猜测之后，将打印新的棋盘状态，其中每个命中为“ X”，每个未命中为“ M”。还将每个猜测添加到猜测数组列表中。一旦用户猜到了飞船的每个元素在哪里，游戏就结束了，并且打印了猜谜历史。我的代码似乎可以正常工作，但是我无法结束游戏。它永远不会脱离主循环的while循环。这是我的代码，我在做错什么或需要更改吗？
================================================ =========================== 我的代码：
class Ship {
int x;
int y;
//String orient;
public Ship (int x, int y) {
super();
this.x = x;
this.y = y;
//this.orient = orient;
}
}
class Guess {
int row;
int col;
public Guess (int row, int col) {
super();
this.row = row;
this.col = col;
}
}
public class CS125_Project5
{
//create the 2d arrays for the realBoard where the user will add the ships
// and the guessBoard which will update when user makes guesses
/////////what i had at first but kept getting nullpointerexception
//static String realBoard[][];
//static String guessBoard[][];
//with these i get the thing printed but it says null for all values
static String gameBoard[][] = new String[7][7];
static String guessBoard[][] = new String[7][7];
//creating the arrayList for both ships and guesses
static ArrayList<Ship> ships = new ArrayList<>();
static ArrayList<Guess> guesses = new ArrayList<>();
////////////////////////////////////////////////////////
////// Constructor
////////////////////////////////////////////////////////
public CS125_Project5() {
//initializing the arrays to have a fixed size of 7x7
//realBoard = new String[7][7];
//guessBoard = new String[7][7];
ships = new ArrayList<>();
guesses = new ArrayList<>();
//adding a '-' to each element of the 2d arrays for both boards
for (int i = 0; i < 7; i++) {
for (int j = 0; j < 7; j++) {
gameBoard[i][j] = "-";
guessBoard[i][j] = "-";
}
}
}
////////////////////////////////////////////////////////
/////// Method to Print the game maker board
////////////////////////////////////////////////////////
public static void printGameMakerBoard(){
System.out.print("r\\c\t");
//printing the column numbers
for(int i=0;i<7;i++){
System.out.print(i+"\t");
}
//printing the row numbers
System.out.println();
//printing the gameMaker board to show user what the board looks like
for(int i=0;i<7;i++){
System.out.print(i+"\t");
for(int j=0;j<7;j++){
System.out.print(gameBoard[i][j] +"\t");
}
System.out.println();
}
}
public static void updateBoard(int row, int col, String orient, int length) {
//if statement to determine orientation of ship
if (orient.contains("r")) {
int updateCol;
for (int j = 0; j < length; j++) {
updateCol = j + col;
gameBoard[row][updateCol] = "S";
}
} else {
int updateRow;
for (int j = 0; j < length; j++) {
updateRow = row + j;
gameBoard[updateRow][col] = "S";
}
}
printBoard(gameBoard);
}
public static void printBoard(String[][] board) {
System.out.print("r\\c"+"\t");
//printing the column numbers
for(int i=0;i<7;i++){
System.out.print(i+"\t");
}
System.out.println();
//printing the row numbers
// printing the guess board
for(int i=0;i<7;i++){
System.out.print(i+"\t");
for(int j=0;j<7;j++){
System.out.print(board[i][j] +"\t");
}
System.out.println();
}
}
private static void addShip(int x, int y, int length, String orient) {
gameBoard[x][y] = "S";
if (length == 2 || length == 3 || length == 4) {
if (orient.contains("d")) {
for (int i = 0; i < length; i++) {
Ship ship = new Ship(x, y+i);
ships.add(ship);
}
} else { //orient.contains("s")
for (int j = 0; j < length; j++) {
Ship ship = new Ship(x+j, y);
ships.add(ship);
}
}
}
// Ship ship = new Ship(x, y);
// ships.add(ship);
}
public void guess(int x, int y) {
//adding user guesses to ArrayList
Guess g = new Guess(x , y);
guesses.add(g);
//check to see if hit or miss, if hit replace user guess with 'X'
// else if its a miss replace guess with 'M'
if (gameBoard[x][y] == "S") {
guessBoard[x][y] = "X";
System.out.println("Hit!");
//now remove the ship from the list
for(int i = 0; i < ships.size(); i++) {
Ship ship = ships.get(i);
if (ship.x== x && ship.y == y){
ships.remove(i);
break;
}
}
} else {
guessBoard[x][y] = "M";
System.out.println("Miss!");
}
}
public static boolean gameOver() {
if(ships.size() == 0) {
return true;
} return false;
}
public static void printGuesses() {
System.out.println("Guess || Row Col");
System.out.println("=====================");
for(int i = 0; i < guesses.size(); i++) {
Guess g = guesses.get(i);
System.out.println(" " + i + " || " + g.row + " " + g.col);
}
}
////////////////////////////////////////////////////////
////// Main
////////////////////////////////////////////////////////
public static void main(String[] args)
{
// Your program should always output your name and the project number.
// DO NOT DELETE OR COMMENT OUT. Replace with relevant info.
System.out.println("Mason Sarna");
System.out.println("Project 5");
System.out.println("");
// Your code should go below this line
System.out.println("------------Welcome to BattleShip------------");
//printGameMakerBoard();
CS125_Project5 userShip = new CS125_Project5();
//CS125_Project5.printGameMakerBoard();
printBoard(guessBoard);
// create scanner
Scanner sc = new Scanner(System.in);
//initializing variables
int row = 0;
int col = 0;
String orient = "";
int length = 0;
/////////////////////
// Getting user input for row, col, and orientation of 3 different ships, updates/prints the board after each ship input
for (int i = 2; i < 5; i++) {
System.out.println("Please enter coordinates for ship of length "+ i);
System.out.println("Starting Row (0-6):");
row = sc.nextInt();
System.out.println("Starting column (0-6):");
col = sc.nextInt();
System.out.println("From the starting point, extend down or right? (d/r):");
orient = sc.next().toLowerCase();
length = i;
//CS125_Project5.updateBoard(row, col, orient, length);
updateBoard(row,col,orient,length);
CS125_Project5.addShip(row,col, i, orient);
}
System.out.println();
System.out.println("------------Final Game Maker Board------------");
CS125_Project5.printGameMakerBoard();
System.out.println();
System.out.println();
System.out.println("------------GAME STARTING NOW------------");
printBoard(guessBoard);
while(!gameOver()) {
System.out.println("Enter guess in row/col:");
int r = sc.nextInt();
int c = sc.nextInt();
if (guesses.contains(r) && guesses.contains(c)) {
System.out.println("r\\c = " + r + "\\" + c + " has already been guessed");
} else {
userShip.guess(r, c);
CS125_Project5.printBoard(guessBoard);
}
System.out.println("---------------------------------------------------");
}
System.out.println("------------Game Over------------");
CS125_Project5.printGuesses();
}