ballworlds.ball
Class Ball
java.lang.Object
ballworlds.ball.Ball
- All Implemented Interfaces:
- Animate, Drawable, Relocatable
public abstract class Ball
- extends Object
- implements Drawable, Relocatable, Animate
A Ball is an abstract class that does nothing -- it is just a convenient name
for a "generic" ball, that is, any Drawable, Relocatable, Animate object.
Specific kinds of Balls are expected to do other things like move on their own,
bounce, shrink and grow in size, explode, and be draggable by the mouse.
Specific kinds of Balls should extend this class, simply so that
they can be declared to be a Ball in classes that refer to a generic Ball.
A Ball must have a constructor that:
- Takes a BallEnvironment object and
- Uses that BallEnvironment object to add the Ball to its World
(otherwise, the Ball is neither displayed nor asked to act).
Students: you should NOT add any code to this abstract Ball class.
Instead, write classes that extend this Ball class.
- Author:
- David Mutchler, Salman Azhar and others, January 2005.
Modified September, 2008.
Constructor Summary |
Ball(BallEnvironment ballEnvironment)
Adds itself to its World (otherwise, the Ball is neither displayed
nor asked to act). |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Ball
public Ball(BallEnvironment ballEnvironment)
- Adds itself to its World (otherwise, the Ball is neither displayed
nor asked to act).
This stub does nothing. Specific kinds of Balls should override
this constructor so that it accomplishes the above.
- Parameters:
ballEnvironment
- The BallEnvironment for all the Balls in this Ball's World.