Scratch

WindowsExplorer · 2012-12-01 11:21:04

I know this should go in advanced topics,but this is just a quick question and i will delete it once i get help. I have code, but the KeyEvent part isnt being called.

Code:

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.util.Random;

import javax.swing.JFrame;

public class main {

    public static Random rand = new Random();

    public static String gameTitle = "Game";
    public static String gameVersion = "1.0 Alpha";

    public static Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();

    public static JFrame window = new JFrame(gameTitle);

    public static int windowsize = 500;
    public static int k = KeyEvent.KEY_PRESSED;
    public static int up = KeyEvent.VK_UP;
    public static int down = KeyEvent.VK_DOWN;
    public static int right = KeyEvent.VK_RIGHT;
    public static int left = KeyEvent.VK_LEFT;

    public static void main(String[] args) {
        window.setDefaultLookAndFeelDecorated(true);
        int x = (dim.width) / 2 - windowsize / 2;
        int y = (dim.height) / 2 - windowsize / 2;
        window.setLocation(x, y);
        window.setSize(windowsize, windowsize);
        window.setResizable(false);
        window.setVisible(true);
        
        drawPanel();
    }

    public static void drawPanel() {
        window.add(new graphics());
        if (k == up) {
            gameVersion = "UP";
        } else {
            gameVersion = "NONE";
        }
        window.invalidate();
        window.validate();
        window.repaint();
        drawPanel();
    }
}

muppetds · 2012-12-01 13:08:53

I have no idea if this is right but arent you setting the keys to be pressed at the beginning?

WindowsExplorer · 2012-12-01 13:19:18

muppetds wrote:
I have no idea if this is right but arent you setting the keys to be pressed at the beginning?

Nope, because I made the method the keydown is checked for is infinite.

muppetds · 2012-12-01 13:53:33

WindowsExplorer wrote:
muppetds wrote:
I have no idea if this is right but arent you setting the keys to be pressed at the beginning?
Nope, because I made the method the keydown is checked for is infinite.

hmm ok - just make sure it is done correctly as i have been asked something similar before

GeonoTRON2000 · 2012-12-01 14:18:00

I don't believe you're going about this in the right way. Here's what will work (guaranteed.)

Code:

import java.awt.event.*;
...
window.addKeyListener(new KeyListener() {

  public void keyPressed(KeyEvent e) {
    // do stuff here
  }

  public void keyReleased(KeyEvent e) {
    // do more stuff here
  }

  public void keyTyped(KeyEvent e) {
    // don't do stuff here
    // it's required by the listener, but never called
  }

});
...

WindowsExplorer · 2012-12-01 15:09:38

thanks ill check if it works later dont close topic mods.

throughthefire · 2012-12-13 01:39:38

Or you could add "implements KeyListener" to the end of your class declaration, and then implement the necessary methods into your main class.

technoguyx · 2012-12-13 09:26:28

WindowsExplorer wrote:
I know this should go in advanced topics,

No it shouldn't, "Advanced Topics" is about advanced aspects of Scratch itself.

GeonoTRON's suggestion should work - I haven't used Java in ages (I believe it's too complex of a language for most purposes), but I do remember that the KeyListener object is used to, well, listen to key-press events. tongue

Scratch

archived forums

#1 2012-12-01 11:21:04

Java Help

Code:

#2 2012-12-01 13:08:53

Re: Java Help

#3 2012-12-01 13:19:18

Re: Java Help

muppetds wrote:

#4 2012-12-01 13:53:33

Re: Java Help

WindowsExplorer wrote:

muppetds wrote:

#5 2012-12-01 14:18:00

Re: Java Help

Code:

#6 2012-12-01 15:09:38

Re: Java Help

#7 2012-12-13 01:39:38

Re: Java Help

#8 2012-12-13 09:26:28

Re: Java Help

WindowsExplorer wrote:

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