JFrame 中的矩形创建无缘无故右移

Question

我正在尝试使用 2D 数组为 JFrame 着色以创建网格，用于学校项目的“地图”。 问题是，在帧的 (0,0) 位置，会出现一个随机的灰色框，将所有内容推到右侧。它甚至将最后一个块推到 NEXT 行的第一个位置，这让我非常困惑。

我考虑到数组以索引“0”开头的事实，我想知道为什么它没有在 (0,0) 位置绘制一个黑框。

这是我的代码中的两个相关类：

public class Floor1Components extends JComponent {
  public void paintComponent(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;

    for (int y = 0; y < Map.floor1Schematics.length; y++) { //for every row

        for(int x = 0; x < Map.floor1Schematics[0].length; x++) {   //do something for every column
            Rectangle block = new Rectangle((x*50), (y*50), 50, 50);
            g2.draw(block);
            g2.fill(block);
            if(Map.floor1Schematics[y][x].equals("wl")) {
                g2.setColor(Color.BLACK);
            }
            if(Map.floor1Schematics[y][x].equals("gr")) {
                g2.setColor(Color.GREEN);
            }
            if(Map.floor1Schematics[y][x].equals("end")) {
                g2.setColor(Color.RED);
            }
            if(Map.floor1Schematics[y][x].equals("ch")) {
                g2.setColor(Color.YELLOW);
            }
            if(Map.floor1Schematics[y][x].equals("pv")) {
                g2.setColor(Color.GRAY);
            }
        }

    }   
}

}

public class Map {

public static boolean floor1 = true;
public static boolean floor2 = false;
public static boolean floor3 = false;

public static JFrame frame = new JFrame();

public static String floor1Schematics[][] = 
    {
{"wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl"},
{"wl","gr","gr","gr","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","gr","gr","gr","wl"},
{"wl","gr","ch","gr","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","gr","ch","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","wl","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","wl","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","pv","pv","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","pv","pv","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","wl"},
{"wl","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","pv","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","pv","pv","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","pv","pv","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","wl","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","wl","wl"},
{"wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl"},
{"wl","gr","ch","gr","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","gr","ch","gr","wl"},
{"wl","gr","gr","gr","wl","gr","gr","gr","gr","gr","gr","gr","gr","gr","pv","pv","gr","gr","gr","gr","gr","gr","gr","gr","gr","wl","gr","gr","gr","wl"},
{"wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl","wl"},

    };

public static void createFrame() {

    frame.setSize(1600,1600);
    frame.setTitle("Frame");
    frame.setResizable(false);
    //frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
    //PlayerModel player = new PlayerModel();
    //frame.add(player);
    //frame.setVisible(true);
    if (floor1 && !floor2 && !floor3) {
        Floor1Components floor1 = new Floor1Components();
        frame.add(floor1);
        frame.setVisible(true);
    }
}

public static void main(String[] args) {
    createFrame();
}

}

为 2D 阵列的暴行道歉，这是为了着色和检测你站在什么块上。但我很困惑为什么所有东西都被推到右边，然后再往下。我已经研究了一千次块创建和索引引用的数学。

Answer 1

我觉得你应该放

        g2.draw(block);
        g2.fill(block);

如果我没记错的话，在你的 setcolors 之后。

对于第一个元素，您正在绘制一个框，然后设置颜色。让我知道这是否有帮助。如果你有main方法代码，我愿意进一步帮助。