Java中的井字游戲

Question

我正在嘗試在Java上編寫井字游戲。

這是我到目前為止（有效）的代碼，我不太了解如何繪制圓圈而不是十字：

public static void main(String[] args) {
    //Declare variables
    int[][] board = new int[3][3];
    int turns = 0, x, y, mode, score = 0;
    String dec;
    Scanner s = new Scanner(System.in);
    //Constants
    final int EMPTY = 0;
    final int FILL_O = 1;
    final int FILL_X = 2;

    //Ask user for game type
    System.out.println("TicTacToe\n=========");
    System.out.print("(1) or (2) players? ");
    mode = s.nextInt();

    //Draw the board
    StdDraw.setScale(0, 3);
    StdDraw.setPenRadius(0.008);
    for (int c = 0; c <= 3; c++) {
        StdDraw.line(c, 0, c, 3);
    }
    for (int c = 0; c <= 3; c++) {
        StdDraw.line(0, c, 3, c);
    }

    //Two-player Game
    if (mode == 2) {
        //X goes first
        StdDraw.setPenColor(Color.BLUE);
        while (turns < 9) {
            //Draw Os on odd turns
            if (turns % 2 == 1) {
                if (StdDraw.mousePressed()) {
                    x = (int) Math.floor(StdDraw.mouseX());
                    y = (int) Math.floor(StdDraw.mouseY());
                    if (board[x][y] == EMPTY) {
                        StdDraw.circle(x + 0.5, y + 0.5, 0.5);
                        board[x][y] = FILL_O;
                        mode = FILL_O; //Since mode is no longer in use, I 
    reinstate it to track turns
                        StdDraw.show(500);
                        turns++;
                    }
                }
            }

Answer 1

而不是使用StdDraw.text(x, y, board[x][y] + ""); 測試board[x][y]的值，並調用一個在坐標x或y處繪制正方形或圓形的函數。

為了說明這一點，請替換

for (int x = 0; x < board.length; x++) {
    for (int y = 0; y < board[x].length; y++) {
        StdDraw.text(x, y, board[x][y] + "");
    }
}

與

for (int x = 0; x < board.length; x++) {
    for (int y = 0; y < board[x].length; y++) {
        if (board[x][y] == 'X') {
            StdDraw.filledSquare(x, y, 0.5 );
        }
        else if (board[x][y] == 'O') {
            StdDraw.filledCircle(x, y, 0.5 );
        }
    }
}

進行一些測試以找到合適的半徑值，0.5可能不是很好。

Answer 2

該API提供了方法filledCircle和filledRectangle 。

public static void  filledCircle(double x, double y, double r) ;

繪制以（x，y）為中心的半徑r的實心圓。

參數：
-x圓心的x坐標
-y圓心的y坐標
-r圓的半徑

public static void  filledRectangle(double x, double y, double halfWidth, double halfHeight);

繪制以（x，y）為中心的給定一半寬度和一半高度的填充矩形。

參數：
-x矩形中心的x坐標
-y矩形中心的y坐標
-HalfWidth是矩形寬度的一半
-HalfHeight是矩形高度的一半

或參見filledSquare ...基本上具有相同的思想，但參數中的值相同。

就像是

//CENTER
int x = (int) Math.floor(StdDraw.mouseX());
int y = (int) Math.floor(StdDraw.mouseY());
int r = 10; //radius
StdDraw.filledcircle(x, y, r);

和

//CENTER
int x = (int) Math.floor(StdDraw.mouseX());
int y = (int) Math.floor(StdDraw.mouseY());
int width = 10; 
int height = 10; 
//The method use the center of the shape and half of both "length"
StdDraw.filledRectangle(x, y, height  / 2, height / 2);