breakout
Class DefaultBreakoutComponent

java.lang.Object
  breakout.DefaultBreakoutComponent

All Implemented Interfaces:

BreakoutComponent

Direct Known Subclasses:

Bumper, Wall

public abstract class DefaultBreakoutComponent

extends java.lang.Object

implements BreakoutComponent

abstract class DefaultBreakoutComponent provides a partial implementation of the BreakoutComponent interface. It manages the position, size, shape, death, and transient parts of the BreakoutComponent, leaving the implementation of paint and hitBy to the subclass. The shape is a rectangle.

Version:

$Id: DefaultBreakoutComponent.java,v 1.2 2004/03/26 20:39:33 gus Exp $

Author:

benmv@olin.edu

See Also:

BreakoutComponent, breakout.BenSimpleBrick

Constructor Summary

DefaultBreakoutComponent(java.awt.Point location, java.awt.Dimension size)
without world constructor.

DefaultBreakoutComponent(java.awt.Point location, java.awt.Dimension size, World w)
Default constructor creates the component at a given location and size.

Method Summary

java.awt.Point	getCenter() returns a point that corresponds to the center of the component.
java.awt.Point	getLocation() returns a new Point corresponding to the location of the component's upper-left corner.
java.awt.Shape	getShape() returns a Rectangle at location with size.
java.awt.Dimension	getSize() returns the Dimensions of the component.
abstract void	hitBy(BreakoutComponent striker) subclasses must implement the hitBy method to have the component react to being struck.
boolean	isDead() returns dead status of component.
boolean	isTransient() The default component is not transient.
void	kill() destroys this component
abstract void	paint(java.awt.Graphics g) subclasses must implement the paint method in order to draw their component.
void	setLocation(java.awt.Point location) changes the location of the component's upper left corner to the given location.
void	setWorld(World world) sets the world the component lives in

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBreakoutComponent

public DefaultBreakoutComponent(java.awt.Point location,
                                java.awt.Dimension size,
                                World w)

Default constructor creates the component at a given location and size.

Parameters:

location - Initial location of component.

size - Initial size of component.

w - World the component lives in.

DefaultBreakoutComponent

public DefaultBreakoutComponent(java.awt.Point location,
                                java.awt.Dimension size)

without world constructor.

Method Detail

getLocation

public java.awt.Point getLocation()

returns a new Point corresponding to the location of the component's upper-left corner. Changing the returned point will NOT result in the component's location changing. To change the location of this component, use setLocation.

Specified by:

getLocation in interface BreakoutComponent

Returns:

New Point corresponding to location of component.

setLocation

public void setLocation(java.awt.Point location)

changes the location of the component's upper left corner to the given location. Copies the given point, so subsequent changes to the Point provided will not affect the location of the compenent.

Specified by:

setLocation in interface BreakoutComponent

Parameters:

location - Point to locate the component at.

getCenter

public java.awt.Point getCenter()

returns a point that corresponds to the center of the component. getLocation() returns upper-left corner.

Specified by:

getCenter in interface BreakoutComponent

Returns:

Point located at the center of the component.

getSize

public java.awt.Dimension getSize()

returns the Dimensions of the component. Mutating the returned value will NOT change the size of the component.

Specified by:

getSize in interface BreakoutComponent

Returns:

Dimension of the component.

getShape

public java.awt.Shape getShape()

returns a Rectangle at location with size.

Specified by:

getShape in interface BreakoutComponent

Returns:

Shape Rectangle according to components location and size.

kill

public void kill()

Description copied from interface: BreakoutComponent

destroys this component

Specified by:

kill in interface BreakoutComponent

isDead

public boolean isDead()

Description copied from interface: BreakoutComponent

returns dead status of component.

Specified by:

isDead in interface BreakoutComponent

isTransient

public boolean isTransient()

The default component is not transient.

Specified by:

isTransient in interface BreakoutComponent

Returns:

false by default.

setWorld

public void setWorld(World world)

Description copied from interface: BreakoutComponent

sets the world the component lives in

Specified by:

setWorld in interface BreakoutComponent

paint

public abstract void paint(java.awt.Graphics g)

subclasses must implement the paint method in order to draw their component.

Specified by:

paint in interface BreakoutComponent

Parameters:

g - Graphics object used to draw with.

hitBy

public abstract void hitBy(BreakoutComponent striker)

subclasses must implement the hitBy method to have the component react to being struck.

Specified by:

hitBy in interface BreakoutComponent

Parameters:

striker - BreakoutComponent that struck this component