CODEWITHSUNDEEP
javaswinguser-interfacelayout
user1850008
user1850008

Reputation: 23

Create a 2D array of panels that each draw their own shape based on the classes designed previously

I am creating a game that allows one player to move around a board with user input by the arrow keys on the keyboard. The objective is to collect the gems on the board and avoid the monsters that move around randomly. I am having issues just getting my board to be drawn in the GUI. Each "tile", "item", and "character" are drawn with simple, generic draw methods like drawRect and drawOval. However, I don't know how to get these to be drawn in an array of panels.

Is my issue in the constructor or the paint method? Help!

public class LevelPanel extends JPanel {
    private static Player player;
    private Level level;
    private JLabel gemLabel, scoreLabel, healthLabel;
    private JPanel[][] squares;
    private JPanel boardPanel;
    private JOptionPane optionPane = new JOptionPane();

    public LevelPanel() {
        this.player = player;
        setPreferredSize(new Dimension(300,300));
    setBackground(Color.white);
    setLayout(new GridLayout(10,10));

    gemLabel = new JLabel("Gems Left: 0");
    scoreLabel = new JLabel("Score: 0");
    healthLabel = new JLabel("Health: 100");

    for(int i = 0; i < 10; i++) {
        for(int j = 0; j < 10; j++) {
        squares[i][j] = new JPanel();
        squares[i][j].setBackground(Color.white);
        boardPanel.add(squares[i][j]);
        }
    }

    add(gemLabel);
    add(scoreLabel);
    add(healthLabel);
    add(boardPanel);
    }

    public void paint(Graphics g) {
        super.paint(g);
    level.draw(g);
    }

    private class KeyHandler extends KeyAdapter {
        public void keyPressed (KeyEvent e) {
        int keyCode = e.getKeyCode();
        switch(keyCode) { 
            case KeyEvent.VK_UP:
            player.move(-1,0);
            break;
            case KeyEvent.VK_DOWN:
            player.move(1,0);
            break;
            case KeyEvent.VK_LEFT:
            player.move(0,-1);
            break;
            case KeyEvent.VK_RIGHT: 
            player.move(0,1);
            break;
        }
        gemLabel.setText("Gems Left: " + level.getNumGems());
        scoreLabel.setText("Score: " + player.getScore());
        healthLabel.setText("Health: " + player.getHealth());
        repaint();
    }
}

Upvotes: 2

Views: 1009

Answers (2)

Reimeus
Reimeus

Reputation: 159844

You never instantiate squares or boardPanel:

private JPanel[][] squares = new JPanel[10][10];
private JPanel boardPanel = new JPanel();

Also level in class LevelPanel does not appear to be instantiated. In this class also, you are assigning an undefined reference to player

public LevelPanel() {
    this.player = player;

You could pass in a Player reference:

public LevelPanel(Player player) {
    this.player = player;

Upvotes: 1

vels4j
vels4j

Reputation: 11298

Instead of having JPanel[] you can use JButton[] without any name with background color.

Here is an game example which is similar to your 2D Array need Shuffling JButton in CardLayout

Upvotes: 0

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