PinBallDomain
Class Target

java.lang.Object
  PinBallDomain.Target

All Implemented Interfaces:

Obstacle

public class Target
extends java.lang.Object
implements Obstacle

The goal in the PinBallDomain.

Author:

George Konidaris (gdk at cs dot umass dot edu)

Constructor Summary

Target(Point P, double rad)
Create a new target.

Method Summary

boolean	collision(Ball b) Determine whether a collision takes place with the ball.
double[]	collisionEffect(Ball b) Compute collision effect with the ball.
static Target	create(java.lang.String line) Create a new target given a line of config file text.
Point	getCenter() Get the center of the target.
Point	getIntercept() Get a point of intersection.
double	getRadius() Get the target's radius.
double	getX() Get the target's X coordinate.
double	getY() Get the target's Y coordinate.
boolean	inside(Point p) Determine whether a point is inside the target.
static boolean	matchTag(java.lang.String line) Determine whether a line of the config file refers to the target.
void	write(java.io.FileWriter f) Write the target object to a file.

Methods inherited from class java.lang.Object

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

Constructor Detail

Target

public Target(Point P,
              double rad)

Create a new target.

Parameters:

P - center

rad - radius

Method Detail

collisionEffect

public double[] collisionEffect(Ball b)

Compute collision effect with the ball.

Specified by:

collisionEffect in interface Obstacle

Parameters:

b - the ball

Returns:

the effect: (0, 0) since the target is absorbing

getCenter

public Point getCenter()

Get the center of the target.

Returns:

the center point

collision

public boolean collision(Ball b)

Determine whether a collision takes place with the ball.

Specified by:

collision in interface Obstacle

Parameters:

b - the ball

Returns:

true if there has been a collision, false otherwise

inside

public boolean inside(Point p)

Determine whether a point is inside the target.

Specified by:

inside in interface Obstacle

Parameters:

p - point to check

Returns:

true if p lies within the target, false otherwise.

matchTag

public static boolean matchTag(java.lang.String line)

Determine whether a line of the config file refers to the target.

Parameters:

line - the line of config file text

Returns:

true if the line matches, false if it doesn't

create

public static Target create(java.lang.String line)

Create a new target given a line of config file text.

Parameters:

line - the config file line

Returns:

a newly created Target object

write

public void write(java.io.FileWriter f)
           throws java.io.IOException

Write the target object to a file.

Specified by:

write in interface Obstacle

Parameters:

f - the file

Throws:

java.io.IOException

getIntercept

public Point getIntercept()

Get a point of intersection.

Specified by:

getIntercept in interface Obstacle

Returns:

null, always

getX

public double getX()

Get the target's X coordinate.

Returns:

the X coordinate

getY

public double getY()

Get the target's Y coordinate.

Returns:

the Y coordinate

getRadius

public double getRadius()

Get the target's radius.

Returns:

the radius