Don't forget to change the rendering call in the Step function to use the new renderAtBodyPosition. Now even if you turn the debug draw display off (uncheck the 'Shapes' checkbox on in the control panel) your own rendering code still draws the ball at the correct position and rotation. Nov 24, 2014 WWE Impresario Vince McMahon Accused Of Demanding Sexual Favors From Male Wrestlers By Graham Gremore November 24, 2014 at 3:11pm 47 comments Former WWE pro wrestler James Harris hasn’t had. Sep 30, 2007 Note: As the ball also stands still when being at the top of the screen, we check if the ball is at the bottom of the desktop before bouncing it. Other Changes You may get some neat results by changing the physical properties like gravity/friction/speed.
Introduction
When I first started with C#, I thought about what I could do. This simple example came to my mind, as it is done in some different places, e.g. like the Direct X Browser. I just redid that and added some gravity and transparency.
Steps
1. Creating a Way to Display the Ball
We somehow need to display the ball/box we want to bounce around. One of the easiest ways is to create a new form, set its border style to none and draw it yourself.
2. Making the Ball Move
For moving the ball, I used my own Application loop, but you might as well just create a timer calling an OnTick method.
We move our ball by having two Vectors: The first one for the current position, the second one for the velocity.
3. Making the Ball Bounce
As a wall we will use the borders of the desktop; for the collision, simply check if the position of the ball exceeds them.
Bouncy Ball Noise Meter
I decrease both movement variables to create a more realistic movement, as a ball normally wouldn't bump endless times because of the friction.
4. Making the Ball Bounce Again after Standing Still
As we added friction, the ball will stand still after some time. Therefore we just give it another kick to let it start again.
Note: As the ball also stands still when being at the top of the screen, we check if the ball is at the bottom of the desktop before bouncing it.
Other Changes
You may get some neat results by changing the physical properties like gravity/friction/speed ...
How To Make Bouncy Ball
History
- 30th September, 2007: Initial post