Question

我遇到的问题是当我移动我的“碎片”时，其中一些失灵（我的意思是他们的x位置搞砸了）我无法找出原因。我已经尝试调整该块的大小，尝试更改Piece类中的fill方法，并尝试调整JFrame的大小。我将提供一张之前，期间和之后的图片（抱歉，我还无法嵌入图片）和所有代码。

Before，During，After。正如你所看到的那样，“碎片”的x位置是关闭的。我能看到的主要问题是：通过paintComponent方法中的Piece对象的ArrayList更新，我在其fill方法中移动Piece对象的方式这部分我尝试过更改 - ＆gt; （如果（x <-100）），actionTimer延迟2ms，我也尝试改变无效，或者我创建和添加“碎片”的方式。我还会提供我的所有代码here以防有可能帮助（并且您可以自己运行）。

我的轮盘小组类:(我正在删除一些不重要的代码）。

public class RoulettePanel extends JPanel implements ActionListener {

public ArrayList<Piece> pieces = new ArrayList<Piece>();

private Timer actionTimer, rollerTimer;

private int yValue = 70;
private int actionCount = 0;
private int rollerCount = 0;
private int waitSeconds = 5;

public RoulettePanel() {

    start = new JButton("Start");
    start.addActionListener(this);
    add(start);

    displayField = new JTextField(20);
    displayField.setEditable(false);
    add(displayField);

    addPieces();

    rollerTimer = new Timer(1000, new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            displayField.setText("Rolling in " + (waitSeconds-rollerCount) + "...");
            if(rollerCount==waitSeconds) {
                displayField.setText("Rolling...");
                rollerTimer.stop();
                playRound();
            }
            rollerCount++;
        }
    });

    actionTimer = new Timer(2, new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            actionCount++;
            int velocity = 1;
            if(actionCount < 400) {
                velocity = 3;
            } else if(actionCount < 1600) {
                velocity = 2;
            }
            for(int i=0; i<pieces.size(); i++) {
                pieces.get(i).move(-1*velocity);
            }
            if(actionCount == 1900) {
                actionTimer.stop();
                determineWinner();
            }
        }
    }); 
}

public void paintComponent(Graphics g) {
    super.paintComponent(g);

    Color temp = g.getColor();

    for(int i=0; i<pieces.size(); i++) {
        pieces.get(i).fill(g);
    }

    g.setColor(Color.WHITE);
    g.fillRect(getWidth()/2, yValue-10, 2, 50);
    g.setColor(temp);

    repaint();
}

@Override
public void actionPerformed(ActionEvent e) {
    Object source = e.getSource();
    if(source.equals(start)) {
        rollerCount=0;
        rollerTimer.start();
    } else if(source.equals(stop)) {
        actionTimer.stop();
        determineWinner();
    }
}

private void playRound() {
    actionCount=0;
    actionCount -= rand.nextInt(601);
    actionTimer.start();
}

private void determineWinner() {
    for(int i=0; i<pieces.size(); i++) {
        if(pieces.get(i).containsPoint(getWidth()/2)) {
            displayField.setText(pieces.get(i).toString());
            break;
        }
    }
}

private void addPieces() {
    int width = Piece.width;
    System.out.println(width);
    System.out.println(Main.GUI.getWidth()/15);
    pieces.add(new Piece(0, yValue, Color.GREEN));
    pieces.add(new Piece(width, yValue, Color.BLACK));
    pieces.add(new Piece(width*2, yValue, Color.RED));
    pieces.add(new Piece(width*3, yValue, Color.BLACK));
    pieces.add(new Piece(width*4, yValue, Color.RED));
    pieces.add(new Piece(width*5, yValue, Color.BLACK));
    pieces.add(new Piece(width*6, yValue, Color.RED));
    pieces.add(new Piece(width*7, yValue, Color.BLACK));
    pieces.add(new Piece(width*8, yValue, Color.RED));
    pieces.add(new Piece(width*9, yValue, Color.BLACK));
    pieces.add(new Piece(width*10, yValue, Color.RED));
    pieces.add(new Piece(width*11, yValue, Color.BLACK));
    pieces.add(new Piece(width*12, yValue, Color.RED));
    pieces.add(new Piece(width*13, yValue, Color.BLACK));
    pieces.add(new Piece(width*14, yValue, Color.RED)); 
}}

我的作品类：

public class Piece {

public int x;
public int y;
public static int width = Main.GUI.getWidth()/15+6;
public Color color;

public Piece(int x, int y, Color color) {
    this.x = x;
    this.y = y;
    this.color = color;
}

public void fill(Graphics g) {
    Color temp = g.getColor();
    g.setColor(color);
    if(x<-100) {
        x=Main.roulettePanel.getWidth();
    }
    g.fillRect(x, y, width, 30);
    g.setColor(temp);
}

public void move(int xAmount) {
    x += xAmount;
}

public boolean containsPoint(int x) {
    if(x>=this.x && x<=this.x+width) {
        return true;
    }
    return false;
}

public String toString() {
    if(color.equals(Color.BLACK)) {
        return "Black";
    } else if(color.equals(Color.RED)) {
        return "Red";
    } else if(color.equals(Color.GREEN)) {
        return "Green";
    }
    return null;
}

public int getX() {
    return x;
}

public void setX(int x) {
    this.x = x;
}

public int getY() {
    return y;
}

public void setY(int y) {
    this.y = y;
}}

我的主要课程：

public class Main {

public static JFrame GUI;
public static RoulettePanel roulettePanel;
public static Container pane;

public static void main(String[] args) {

    GUI = new JFrame("Roulette");
    GUI.setSize(1005, 800);
    GUI.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    pane = GUI.getContentPane();

    roulettePanel = new RoulettePanel();

    pane.add(roulettePanel);

    GUI.setVisible(true);

}}

Java Swing重绘（移动对象的xPosition麻烦）

0 个答案: