我正在编写一个4x4记忆游戏的程序。在这16个盒子中将是一对0-7的整数。我已将所有这些已经随机化并正确编码。现在我想弄清楚每次鼠标点击盒子时如何将颜色与相应的整数配对。
这里的大部分代码。我知道这个游戏的逻辑尚未开始，但我现在更专注于displayHit方法和setColor方法。只是张贴整个代码，因为我可能搞砸了其他地方。
/*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 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)
{
buildBoard(temp);
setColor(g);
centerHit(xMouse, xMouse);
g.fillOval(xMouse, yMouse, 40, 40);
}
public void setColor(Graphics g)
{
switch(temp)
{
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;
}
}
}
答案 0 :(得分：0)
从您的代码中可以看到您在那里所做的事情并不多，
但我想你应该尝试以下方法：
1）确保你有一个组件说我们称之为cmp。
2）确保每次单击该框时都会调用cmp.repaint（）
3）确保从cmp的paintComponent（Graphics g）中调用displayHit（g）函数
应该做
此外，temp被操纵在哪里？
这应该是有帮助的：
public class ColorChanger extends JFrame implements MouseListener {
private Color c = Color.black;
private JPanel p = new JPanel () {
public void paintComponent(Graphics g) {
g.setColor(c );
g.drawRect(100, 100, 100, 100);
}
};
public ColorChanger() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setPreferredSize(new Dimension(1024, 700));
addMouseListener(this);
this.getContentPane().add(p);
pack();
setVisible(true);
}
public static void main (String arg[]) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new ColorChanger();
}
});
}
@Override
public void mouseClicked(MouseEvent arg0) {
randomizeColor();
p.repaint();
}
private void randomizeColor() {
switch ((int)(3*Math.random())) {
case 0:c=Color.red;return;
case 1:c=Color.blue;return;
case 2:c=Color.green;return;
}
}
@Override
public void mouseEntered(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent arg0) {
// TODO Auto-generated method stub
}
}