GamePanel.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.game;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.geom.AffineTransform;
 
import javax.swing.JPanel;
 
import de.lathanda.eos.base.MutableColor;
import de.lathanda.eos.base.Picture2D;
 
/*package*/ class GamePanel extends JPanel
    implements KeyEventDispatcher, MouseListener, MouseMotionListener {
 
    private static final long serialVersionUID = -2303718998046834449L;
    private Game game;
    
    private Picture2D p;
    double fps;
    private int prefHeight;
    private int prefWidth;
 
    public GamePanel(Game game, double width, double height)  {
        this(game, 30, MutableColor.WHITE, width, height);
    }
 
    public GamePanel(Game game, int fps, double width, double height) {
        this(game, fps, MutableColor.WHITE, width, height);
    }
    
    public GamePanel(Game game, int fps, MutableColor background, double width, double height) {
        KeyboardFocusManager.getCurrentKeyboardFocusManager()
        .addKeyEventDispatcher(this);
        this.p = new Picture2D(width, height, this);
        prefHeight = p.mm2pixel(height);
        prefWidth  = p.mm2pixel(width);
        this.game = game;
        this.fps = fps;
        setForeground(MutableColor.BLACK.getColor());
        setBackground(background.getColor());
        // add events
        addMouseListener(this);
        addMouseMotionListener(this);
    }
    @Override
    public Dimension getPreferredSize() {
        return new Dimension(prefWidth, prefHeight);
    }
    public void mouseClicked(MouseEvent e) {
        // no action
    }
 
    public void mousePressed(MouseEvent e) {
        game.mouseDown(e.getButton());
    }
 
    public void mouseReleased(MouseEvent e) {
        game.mouseUp(e.getButton());
    }
 
    public void mouseEntered(MouseEvent e) {
        // no action
    }
 
    public void mouseExited(MouseEvent e) {
        // no action
    }
 
    // MouseMotionListener
    public void mouseDragged(MouseEvent e) {
        game.mousePosition(p.pointFromPixel(e.getX(), e.getY()));
    }
 
    public void mouseMoved(MouseEvent e) {
        game.mousePosition(p.pointFromPixel(e.getX(), e.getY()));
    }
 
    public boolean dispatchKeyEvent(KeyEvent k) {
        switch (k.getID()) {
        case KeyEvent.KEY_PRESSED:
            game.keyDown(k.getKeyCode());
            break;
        case KeyEvent.KEY_RELEASED:
            game.keyUp(k.getKeyCode());
            break;
        }
 
        return false;
    }
    public void addSprite(Sprite sprite) {
        game.addSprite(sprite);
    }
 
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        AffineTransform af = ((Graphics2D)g).getTransform();
        p.setGraphics((Graphics2D)g);
        game.render(p);
        ((Graphics2D)g).setTransform(af);       
    }
}