Class Ball

java.lang.Object
  Ball

All Implemented Interfaces:

SimThing

public class Ball

extends Object

implements SimThing

A small ball object that wanders randomly around a bounded area. CSE143 lecture demo Au01, Sp03, Sp04

Version:

10/18/01, 4/16/03, 4/12/04

Author:

Hal Perkins

Constructor Summary

Ball(int x, int y, int dx, int dy, Color c, int diameter, SimModel model)
Construct a new Ball with the given coordinates, initial direction, and model.

Method Summary

void	action() Perform an appropriate action on each cycle of the simulation, in this case advancing by dx,dy and reversing either direction if we hit an edge of the simulation.
void	paintComponent(Graphics g) Display this ball on the given graphics context

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Ball

public Ball(int x,
            int y,
            int dx,
            int dy,
            Color c,
            int diameter,
            SimModel model)

Construct a new Ball with the given coordinates, initial direction, and model.

Parameters:

x - initial x coordinate of center of the ball

y - initial y coordinate of center of the ball

dx - initial change in x value on each simulation cycle

dy - initial change in y value on each simulation cycle

c - color of the ball

diameter - diameter of the ball

model - the model that this Ball is a part of

Method Detail

action

public void action()

Perform an appropriate action on each cycle of the simulation, in this case advancing by dx,dy and reversing either direction if we hit an edge of the simulation.

Specified by:

action in interface SimThing

paintComponent

public void paintComponent(Graphics g)

Display this ball on the given graphics context

Specified by:

paintComponent in interface SimThing

Parameters:

g - the graphics context where this ball should be drawn