Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (491)
Games in Android Showcase (112)
games submitted by our members
Games in WIP (556)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
   Home   Help   Search   Login   Register   
  Show Posts
Pages: [1]
1  Game Development / Newbie & Debugging Questions / Recreating a bouncy ball effect in Java on: 2007-05-28 08:27:17
Hi,

does anyone know how to recreate the bouncy ball effect in this game (Tangerines):

http://www.kontraband.com/show/show...rating=nsfw_sfw


The most I can do at the moment is Pong-like rebounds off the wall...

Kind regards,

Hendrick
2  Game Development / Newbie & Debugging Questions / Problem: movement of Asteroids clone Ship on: 2007-05-27 11:41:01
Hi,

I'm in the process of making a 2D Asteroids clone.

I've managed to rotate and translate (move with the correct orientation) the ship with:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
   public void paintComponent(Graphics g){
      super.paintComponent(g);
      setBackground(Color.black);

      // Cast Graphics to Graphics2D
      Graphics2D g2d = (Graphics2D)g;

      [b]//Moves ship[/b]
     g2d.translate(shipVelocity.x, shipVelocity.y);

      [b]//Rotates ship[/b]
     g2d.rotate(rotate.getTheta(), ship.getX(), ship.getY());



My problem is that I want the ship to continue moving (translating) without further input from the up arrow. I need to do it with the
1  
public void actionPerformed(ActionEvent e)
method and a Timer object. Would anyone know how to do this? I also tried placing AffineTransform() methods into the public void actionPerformed(ActionEvent e) method but I don't think that it was the right approach.

I've come close to achieving the movement of the ship with updating the polygons of the ship:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
   public void actionPerformed(ActionEvent e) {
            if (up && t.isRunning()) {
             [b] ship.move(shipVelocity.x, shipVelocity.y);[/b]
                      }
             repaint();
             }
        public void keyPressed(KeyEvent e) {
            t.start();
            if (e.getKeyCode() == KeyEvent.VK_UP) {
              [b]shipVelocity.x += SHIP_THRUST_SPEED * Math.cos(rotate.getTheta());
                         shipVelocity.y += SHIP_THRUST_SPEED * Math.sin(rotate.getTheta());[/b]
                      }
              }

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
//Ship class:

public void [b]move[/b](double dx, double dy) {
x += dx;
y += dy;

// updates the already constructed polygons

hull = new Polygon();
hull.addPoint( 0+x, 15+y );
hull.addPoint( -10+x, -15+y );
hull.addPoint( -5+x, -10+y );
hull.addPoint( 5+x, -10+y );
hull.addPoint( 10+x, -15+y );
hull.addPoint( 0+x, 15+y );

cockpit = new Polygon();
cockpit.addPoint( 0+x, 6+y );
cockpit.addPoint( -4+x, -6+y );
cockpit.addPoint( 0+x, -8+y );
cockpit.addPoint ( 4+x, -6+y );

thrust = new Polygon();
thrust.addPoint( -5+x, -10+y );
thrust.addPoint( -0+x, -20+y );
thrust.addPoint( 5+x, -10+y );




The only thing is the movement is warped and doesn't move like the g2d.translate(shipVelocity.x, shipVelocity.y); method.

Also, any ideas on that effect in Asteroids where when you move the ship to the side of one screen boundary it gets translated to the opposite end of the screen?

Kind regards,

Hendrick
Pages: [1]
 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

Nickropheliac (15 views)
2014-08-31 22:59:12

TehJavaDev (23 views)
2014-08-28 18:26:30

CopyableCougar4 (33 views)
2014-08-22 19:31:30

atombrot (41 views)
2014-08-19 09:29:53

Tekkerue (40 views)
2014-08-16 06:45:27

Tekkerue (35 views)
2014-08-16 06:22:17

Tekkerue (25 views)
2014-08-16 06:20:21

Tekkerue (37 views)
2014-08-16 06:12:11

Rayexar (72 views)
2014-08-11 02:49:23

BurntPizza (49 views)
2014-08-09 21:09:32
List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!