Ben Watt

Thanks!

Is there way to have 2 keys being pressed at the same time and be able to have the prior action along with it?

I know that if you press down both keys at the same time, the effect will occur.

But I want to be able to walk a direction for an amount of time, then press and hold down the Shift key and have the character start running.



Any help?

I didn't know anywhere else to post this, so I'm sorry if its in the wrong spot.

I'm currently writing out the javadoc for a project and I want to find out how to set a Class description in the index.html file.

I think it's just a matter of where I place the code, but I don't know where. Any help is appreciated.

All of this has been very helpful.

I am a first year java programmer and have a hard time understanding much of what y'all are saying.

Here is the code I used for my program, hopefully this is more informative than my shoddy explanation to start with.



To repeat, All I want to do is reset the Thread and have it start again each time I click the Space key.


package Final; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.ImageIcon; import javax.swing.JFrame; public class Level1 extends JFrame implements KeyListener, MouseListener, Runnable{ static Thread clockThread; boolean keyRight = false; boolean keyLeft = false; boolean keySpace = false; boolean lastRight = false; boolean lastLeft = false; int t = 0; int xpos = 0; int ypos = 0; Image man = new ImageIcon("Stickman.png").getImage(); public Level1(){ //Code that sizes and sets all properties of the window and adds Listeners for Key and Mouse. clockThread = new Thread(this); } public static void main(String[] args){ Level1 window = new Level1(); window.setExtendedState(MAXIMIZED_BOTH); window.setVisible(true); window.repaint(); } public void paint(Graphics g){ super.paint(g); if(keyRight == true){ g.drawImage(man, xpos, ypos, null); xpos += 5; }else if(keyLeft == true){ g.drawImage(man, xpos, ypos, null); xpos -= 5; }else if(keySpace == true){ if(lastLeft == true){ /*Switch statement that relies on the values of 't' to determine which image to draw in a given direction. There is also a statement to set keySpace and lastRight to false.*/ }else if(lastRight == true){ /*Switch statement much like above, except the direction of the jump is changed. There is also a statement to set keySpace and lastRight to false.*/ } } keyRight = false; keyLeft = false; } public void keyPressed(KeyEvent e) { if(e.getKeyCode() == KeyEvent.VK_RIGHT){ keyRight = true; lastRight = true; repaint(); }else if(e.getKeyCode() == KeyEvent.VK_LEFT){ keyLeft = true; lastLeft = true; repaint(); }else if(e.getKeyCode() == KeyEvent.VK_SPACE){ keySpace = true; clockThread.start(); } } public void run() { while(t < 5){ try { clockThread.sleep(250); repaint(); } catch (InterruptedException e) { e.printStackTrace(); } t++; } t = 0; } }



And if there are any other general programming etiquette problems, I'd appreciate the help.

I have a thread that calls repaint() which draws a character jumping using certain images.

I press the space bar to make the character jump and whatnot.


I'm using a loop and a try-catch statement to keep track of which image I want drawn.

My problem is, I need the thread to stop going, so that when I move the character, I can jump again, but it says "IllegalThreadStateException" and highlights the "clockThread.start()" line of when I press the Space key.


It makes sense, because I never put a statement to stop it anywhere, and it can't start again.

I need to know where I can stop the thread, at what point?

And also - everywhere I put it, I get a "Supress warning for 'deprecation'"

Any help is appreciated. I can post code as well but it'll take about a day.

public FrontScreen(){
super("Start Game");
getContentPane().setBackground(Color.BLACK);
setExtendedState(MAXIMIZED_BOTH);
setUndecorated(true);
addMouseListener(this);
}

public static void main(String[] args){
FrontScreen window = new FrontScreen();
window.setVisible(true);
window.repaint();
}

public void paint(Graphics g){
super.paint(g);

Image title = new ImageIcon("Portal.png").getImage();
g.drawImage(title, 422, 200, null);

/* Get Images for menu buttons using the following method
*/
Image start = new ImageIcon("SGY.png").getImage();
g.drawImage(start, 500, 400, null);

Image option = new ImageIcon("O.png").getImage();
g.drawImage(option, 500, 500, null);

Image exit = new ImageIcon("EXIT.png").getImage();
g.drawImage(exit, 500, 600, null);

}

public void mouseClicked(MouseEvent e) {

xpos = e.getX();
ypos = e.getY();

if(xpos > 500 && xpos < 500 + 216 && ypos > 400 && ypos < 400 + 72){}
else if(xpos > 500 && xpos < 500 + 216 && ypos > 500 && ypos < 500 + 72){
System.exit(0);
OptionScreen option = new OptionScreen();
option.setExtendedState(MAXIMIZED_BOTH);
option.setVisible(true);
}
else if(xpos > 500 && xpos < 500 + 216 && ypos > 600 && ypos < 600 + 72){System.exit(0);}
}
}


(NEXT CLASS)


public class OptionScreen extends JFrame implements MouseListener{

public OptionScreen(){
super("Options");
getContentPane().setBackground(Color.BLACK);
setExtendedState(MAXIMIZED_BOTH);
setUndecorated(true);
addMouseListener(this);
}

public static void main(String[] args){
OptionScreen window = new OptionScreen();
window.setVisible(true);
}

}

I want to be able to:
1. click a button
2. close existing JFrame
3. run new class (which would result in opening a new JFrame)
4. bring the new class to the front.

I've tried all kind of methods, I'm kind of up against a wall right now.

I'm doing this for an independent study project so I might be on here relatively often from now till summer.

Any help is appreciated!!!