java - 基于俄罗斯方 block 游戏创建的数组为 JTable 单元格着色

Question

我正在尝试创建俄罗斯方 block GUI。我 friend 写的后端。到目前为止，我们只是将俄罗斯方 block (或我在代码中提到的网格)打印到控制台窗口。在下面的代码中，我设置了一个 JTable 作为俄罗斯方 block 游戏的棋盘。我想知道如何让 JTable 根据从 Window 类顶部声明的俄罗斯方 block “游戏”传递的网格来渲染每个网格元素。该网格是一个整数值的二维数组，它引用 Pieces 类中枚举的颜色。有什么建议么？截至目前，它仅打印一种颜色。

我还发布了一些俄罗斯方 block 类的代码，以便您可以看到那里可用的方法和参数。

这是我的代码(希望在 SSCCE =p 中):

public class Window {
    JPanel cards;
    final static String SPLASHSCREEN = "SplashScreen";
    final static String MAINMENU = "MainMenu";
    final static String TETRIS = "Tetris";
    final static int GRID_ROW_HEIGHT = 30;
    final static int NUM_ROWS = 20;
    final static int NUM_COLS = 10;
    JTable table = new JTable(new MyTableModel());
    Tetris game = new Tetris(); 

    public void addComponentToWindow(Container pane) {
        // Create the "cards"
        .
        .
        .

        // SplashScreen setup
        .
        .
        .

        // MainMenu setup
        .
        .
        .

        // Tetris setup
        final JButton startGame = new JButton("START GAME");
        card3.setLayout(new GridBagLayout());
        GridBagConstraints gbc2 = new GridBagConstraints();
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.insets = new Insets(2, 2, 2, 2);
        card3.add(startGame, gbc2);
        gbc.gridy = 1;
        startGame.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {                
                table.setDefaultRenderer(Object.class, new MyRenderer());
                table.setRowHeight(GRID_ROW_HEIGHT);
                table.setFocusable(false);
                table.setRowSelectionAllowed(false);
                for (int i = 0; i < game.getNumCols(); i++) {
                    table.getColumnModel().getColumn(i).setPreferredWidth(table.getRowHeight());
                }

                card3.add(table);
                card3.remove(0); //Removes button
                card3.revalidate(); //Redraws graphics
            }
        });

        // Sets up layout
        cards = new JPanel(new CardLayout());
        cards.add(card1, SPLASHSCREEN);
        cards.add(card2, MAINMENU);
        cards.add(card3, TETRIS);

        // Creates the actual window
        pane.add(cards, BorderLayout.CENTER);
    }

    public Color getTableCellBackground(JTable table, int row, int col) {
        TableCellRenderer renderer = table.getCellRenderer(row, col);
        Component component = table.prepareRenderer(renderer, row, col);    
        return component.getBackground();
    }

    class MyRenderer implements TableCellRenderer {
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            JTextField editor = new JTextField();
            if (value != null) {
                editor.setText(value.toString());
            }
            if (game.getCur_color().getKey() == 0) {
                editor.setBackground(Color.WHITE);
            }
            else if (game.getCur_color().getKey() == 1) {
                editor.setBackground(Color.RED);
            }
            else if (game.getCur_color().getKey() == 2) {
                editor.setBackground(Color.GREEN);
            }
            else if (game.getCur_color().getKey() == 3) {
                editor.setBackground(Color.BLUE);
            }
            else if (game.getCur_color().getKey() == 4) {
                editor.setBackground(Color.YELLOW);
            }
            return editor;
        }
    }

    @SuppressWarnings("serial")
    class MyTableModel extends AbstractTableModel {
        public int getColumnCount() {
            return NUM_COLS;
        }
        public int getRowCount() {
            return NUM_ROWS;
        }        
        public Object getValueAt(int row, int col) {
            return null;
        }
    }
}

俄罗斯方 block 类:

public class Tetris 
{
    int NUM_ROWS = 20;
    int NUM_COLS = 10;

    int grid[][];
    int cur_row;
    int cur_col;
    Pieces cur_color;
    Style cur_style;
    Pieces next_color;
    Style next_style;
    boolean over;

    public Tetris()
    {
        grid = new int[10][20];

        for(int i = 0; i < 10; i ++)
        {
            for(int j = 0; j < 20; j ++)
            {
                grid[i][j] = Pieces.BLANK.getKey();
            }
        }

        next_color = Pieces.createColor();
        next_style = Style.createStyle();
        over = false;

        create_Piece();
    }

    public void createPiece(){...}
    public void setPiece(){...}
    public void removeRow(){...}
}

以及所有字段的 moveLeft、moveRight、moveDown、rotateLeft、rotateRight、printGame 以及 getter 和 setter。 Tetris 类中的所有方法都在控制台中进行了测试并且工作正常。这是我到目前为止所得到的输出。每次颜色都不同，我很确定我知道原因，但我很难思考如何根据俄罗斯方 block 类中创建的网格数组为每个单元格着色。

Answer 1

这纯粹是一个概念证明。

基本上，您已经有了游戏板的模型。您需要能够将其建模回屏幕。

我会将您的电路板模型包装在 TableModel 中，并与 TableCellRenderer 一起使用，让两者协同工作。

您需要做的就是当棋盘数据发生变化时相应地更新表模型。

如果你正确地编写了关系，边框将通知表模型，表模型将通知表。

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;

public class TetrisTable {

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

    public TetrisTable() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private JTable table;
        private TetrisTabelModel model;
        private int currentRow = 0;
        private int blockHeight = 3;
        private int blockWidth = 3;

        public TestPane() {
            model = new TetrisTabelModel();
            table = new JTable(model);
            table.setDefaultRenderer(Integer.class, new TetrisTabelCellRenderer());
            table.setRowHeight(24);
            Enumeration<TableColumn> columns = table.getColumnModel().getColumns();
            while (columns.hasMoreElements()) {
                TableColumn column = columns.nextElement();
                column.setPreferredWidth(24);
                column.setMinWidth(24);
                column.setMaxWidth(24);
                column.setWidth(24);
            }
            setLayout(new GridBagLayout());
            add(table);

            Timer timer = new Timer(500, new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {

                    int col = (model.getColumnCount() - blockWidth) / 2;
                    int row = currentRow - blockHeight;
                    if (row + blockHeight >= model.getRowCount()) {
                        ((Timer) e.getSource()).stop();
                    } else {
                        drawShape(row, col, 0);
                        currentRow++;
                        row = currentRow - blockHeight;
                        drawShape(row, col, 3);
                    }

                }

                public void drawShape(int row, int col, int color) {

                    for (int index = 0; index < blockHeight; index++) {

                        if (row >= 0 && row < model.getRowCount()) {

                            switch (index) {
                                case 0:
                                case 1:
                                    model.setValueAt(color, row, col);
                                    break;
                                case 2:
                                    model.setValueAt(color, row, col);
                                    model.setValueAt(color, row, col + 1);
                                    model.setValueAt(color, row, col + 2);
                                    break;
                            }

                        }
                        row++;

                    }
                }
            });
            timer.setRepeats(true);
            timer.setCoalesce(true);
            timer.start();

        }
    }

    public class TetrisTabelModel extends AbstractTableModel {

        private int[][] values;

        public TetrisTabelModel() {
            values = new int[20][10];
        }

        @Override
        public int getRowCount() {
            return values.length;
        }

        @Override
        public int getColumnCount() {
            return values[0].length;
        }

        @Override
        public Class<?> getColumnClass(int columnIndex) {
            return Integer.class;
        }

        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            return values[rowIndex][columnIndex];
        }

        @Override
        public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
            values[rowIndex][columnIndex] = (int) aValue;
            fireTableCellUpdated(rowIndex, columnIndex);
        }
    }

    public class TetrisTabelCellRenderer extends DefaultTableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            super.getTableCellRendererComponent(table, "", false, false, row, column);
            setOpaque(true);
            if (value != null) {
                if (value == 0) {
                    setBackground(Color.WHITE);
                } else if (value == 1) {
                    setBackground(Color.RED);
                } else if (value == 2) {
                    setBackground(Color.GREEN);
                } else if (value == 3) {
                    setBackground(Color.BLUE);
                } else if (value == 4) {
                    setBackground(Color.YELLOW);
                }
            } else {
                setBackground(Color.DARK_GRAY);
            }
            return this;
        }
    }
}