Question

我正在尝试创建一个Tetris GUI。我的朋友写了后端。到目前为止，我们只是将tetris board（或我在代码中引用它的网格）打印到控制台窗口。在下面的代码中，我正在设置一个JTable作为俄罗斯方块游戏的主板。我想知道如何让我的JTable根据从Window类顶部声明的Tetris'游戏'传递的网格渲染每个网格元素。此网格是一个整数值的2D数组，它指的是Pieces类中枚举的颜色。有什么建议？截至目前，它只打印一种颜色。

我还为Tetris课程发布了一些代码，以便您可以看到那里提供的方法和参数。

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;
        }
    }
}

俄罗斯方块类：

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(){...}
}

与所有字段的moveLeft，moveRight，moveDown，rotateLeft，rotateRight，printGame以及getter和setter一起使用。俄罗斯方块类中的所有方法都在控制台中进行了测试并正常工作。这是我到目前为止的输出。每次颜色不同，我很确定我知道为什么，但我很难想到如何根据俄罗斯方块类中创建的网格数组为每个单元格着色。

enter image description here

Answer 1

这纯粹是一个概念证明。

基本上，你已经有了游戏板的型号。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，让两者一起工作。

您需要做的就是在电路板数据发生变化时相应地更新表模型。

如果您正确地编写关系，边框将通知表模型，表模型将通知表。

enter image description here

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;
        }
    }
}

基于俄罗斯方块游戏创建的阵列着色JTable单元

1 个答案: