java - 内存游戏随机颜色

Question

大家好，我正在创建一个使用 4x4 2Darray 的内存游戏。

我在 4x4 中填充了一对 0-7 的整数，它们是随机分散的。我想为每一对分配一种颜色，因此当鼠标单击该方 block 时，分配的颜色将根据整数出现，您必须根据其相应的匹配颜色找到另一个整数。我的 setColor 方法遇到了一些问题。我将包含我的整个代码，以防我在其他地方搞砸，这就是原因。目前，如果我单击每个方 block 一次，我就会使用分配两次的所有 8 种颜色，但某些颜色与另一个图 block 上相同整数的位置不匹配。另外，当我多次单击同一个图 block 时，它会在 2-3 种颜色之间变化，我不确定我做错了什么。

我需要建议的部分是我分配的 setColor 方法及其背后的逻辑。

/*Sets the background of your memory board to black*/
public void init() 
{
    setSize(400,400);
    setBackground(Color.BLACK);
    buildBoard(4);

}   
/*This is main in java applets
    You may need to add (not 
    change) a couple things in this method
 */
public void paint(Graphics canvas)
{
    if(firstRun) //for the first run we need to build our random board
    {

        print2DArray(board);
        buildBoard(4);
        firstRun = false;
    } 
    else // once our board is built we will display the game
    {
        displayGame(canvas);
        if (mouseClicked) // if the mouse has been clicked
        {
            displayHit(canvas);//find which box the user clicked
            mouseClicked = false;
        }
    }
}

/*
    DO NOT change this method
    determines if the mouse has been pressed
    sets x and y Mouse to the location of the mouse arrow
    redraws the image
 */
public boolean mouseDown(Event e, int x, int y ) 
{
    mouseClicked = true; 
    xMouse = x;
    yMouse = y;
    repaint();
    return true;
}

/*DO NOT change this method
    redraws the scene
 */

public void update ( Graphics g ) 
{
    paint(g);
}

/*
    pre: none
    post: build an array that holds the memory values for a board of size x size
    the board will hold two of each int from 0 to size randomly placed in the array
 */

public static void fillRect(Graphics g, int x, int y, int width, int length)
{
    g.setColor(Color.BLACK);
    width = 100;
    length = 100;
    x = (int)xMouse/100;
    y = (int)yMouse/100;        
}

public void buildBoard(int s)

{
    int a = 4;
    for (int row = 0; row < a; row++)
        for (int column = 0; column < a; column++)
        {
            board[row][column] = count++ % 8;
        }
    for(int row = 0; row < 4; row++)

        for(int column = 0; column < 4; column ++) 
        {
            int x = (int)Math.floor(Math.random()*4);
            int y = (int)Math.floor(Math.random()*4);
            temp = board[row][column];
            board[row][column] = board[x][y];
            board[x][y] = temp;


        }
}
public static void print2DArray(int[][] arr)
{
    for (int row = 0; row < arr.length; row++)
    {
        for (int col = 0; col < arr[row].length; col++)
        {
            System.out.print(arr[row][col] + " ");
        }
        System.out.println();
    }
}





public void displayGame(Graphics canvas)
{
    canvas.setColor(Color.WHITE);

    for(int i =0; i < 400; i+= WIDTH)
        for(int j = 0; j < 400; j+= WIDTH)
            canvas.drawRect(i, j, WIDTH, WIDTH);
}

/*
    Pre: xMouse and yMouse have been initialized
    Post: A circle is displayed in the correct box on the screen
    Currently the circle is displayed at the mouse location
 */
public void displayHit(Graphics g)
{

    /*int xGuess = (int)xMouse/100;
    int yGuess = (int)yMouse/100;
    board[xGuess][yGuess] = guess1;
    int xGuess2 = (int)xMouse/100;
    int yGuess2 = (int)yMouse/100;
    board[xGuess2][yGuess2] = guess2;

    if (guess1 == guess2)
    {
        setColor(g);
        centerHit(xMouse, yMouse);
        g.fillOval(xMouse, yMouse, 40, 40);
    }
    else 
    g.fillRect(guess1, guess2, width, length);
    g.setColor(Color.BLACK);*/
    setColor(g);
    centerHit(xMouse, yMouse);
    g.fillOval(xMouse, yMouse, 40, 40);
}

public void setColor(Graphics g)
{

    centerClick(x1,y1);     
    //int x = xMouse;
    //int y = yMouse;
    colorIndex = board[row][column];
    board[row][column] = board[x1][y1];
    board[x1][y1] = colorIndex;


    switch(colorIndex)
    {
    case 0: g.setColor(Color.RED);
    break;
    case 1: g.setColor(Color.GREEN);
    break;
    case 2: g.setColor(Color.BLUE);
    break;
    case 3: g.setColor(Color.ORANGE);
    break;
    case 4: g.setColor(Color.CYAN);
    break;
    case 5: g.setColor(Color.MAGENTA);
    break;
    case 6: g.setColor(Color.PINK);
    break;
    case 7: g.setColor(Color.YELLOW);
    break;
    }

}
public void centerHit(int centerX, int centerY)
{
    {
        if ((xMouse > 0) && (xMouse <=100))
            xMouse = 33;
        else if ((xMouse > 100) && (xMouse <=200))
            xMouse = 133;
        else if ((xMouse > 200) && (xMouse <=300))
            xMouse = 233;
        else if ((xMouse > 300) && (xMouse <=400))
            xMouse = 333;
    }
    {
        if ((yMouse > 0) && (yMouse <=100))
            yMouse = 33;
        else if ((yMouse > 100) && (yMouse <=200))
            yMouse = 133;
        else if ((yMouse > 200) && (yMouse <=300))
            yMouse = 233;
        else if ((yMouse > 300) && (yMouse <=400))
            yMouse = 333;
    }
}
public void centerClick(int centerX, int centerY)
{
    {
        if ((xMouse > 0) && (xMouse <=100))
            x1 = 0;
        else if ((xMouse > 100) && (xMouse <=200))
            x1 = 1;
        else if ((xMouse > 200) && (xMouse <=300))
            x1 = 2;
        else if ((xMouse > 300) && (xMouse <=400))
            x1 = 3;
    }
    {
        if ((yMouse > 0) && (yMouse <=100))
            y1 = 0;
        else if ((yMouse > 100) && (yMouse <=200))
            y1 = 1;
        else if ((yMouse > 200) && (yMouse <=300))
            y1 = 2;
        else if ((yMouse > 300) && (yMouse <=400))
            y1 = 3;
    }
}

}

Answer 1

要防止颜色发生变化，请更改此代码

    colorIndex = board[row][column];
    board[row][column] = board[x1][y1];
    board[x1][y1] = colorIndex;

至

    colorIndex = board[x1][y1];

颜色匹配问题是因为您构建了板子两次:首先是在 paint 方法的firstRun 上打印数组，然后在 init 方法上打印数组板被覆盖，因此您会看到不同的值

要解决这个问题，您应该只在 init 方法中构建一次板，然后调用 print2DArray 来检查它，所以

 buildBoard(4);
 print2DArray(board); //<-- add this line to verify colors

并且您可以省略 firstRun 标志和所有关联的代码。

评论或删除此代码:

/*if(firstRun) //for the first run we need to build our random board
    {
        print2DArray(board);
        buildBoard(4);


        firstRun = false;
    } 
    else // once our board is built we will display the game
    {*/