SpaceInvaders
Class Ship

java.lang.Object
  |
  +--SpaceInvaders.Ship

public class Ship

extends java.lang.Object

Encapsulates the spaceship functionality.

Version:

1.2, 3 January 2002

Author:

Susan B. Cavanaugh

Field Summary

private static int	height spaceship image height in pixels
private Point	prevPos previous position of spaceship
private Point	screenPos position of spaceship on the screen
private static int	width spaceship image width in pixels

Constructor Summary

Ship()
Default constructor initializing spaceship's image position to (300, 430).

Ship(Point p)
Accepts screen coordinates for spaceship's image position.

Method Summary

void	draw(java.awt.Graphics g) Overwrites the previous move and leaves the actual spaceship image handling and drawing to the applet's paint method.
static int	getHeight() Gets the height of a spaceship image.
Point	getPosition() Gets the screen position.
static int	getWidth() Gets the width of a spaceship image.
void	move(boolean moveRight) Moves spaceship either right or left.
static void	setHeight(int h) Sets the height of a spaceship image.
void	setPosition(Point p) Sets the screen position of this spaceship image.
static void	setWidth(int w) Sets the width of a spaceship image.
Laser	shoot() Shoots a yellow laser from top of spaceship.

Methods inherited from class java.lang.Object

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

Field Detail

width

private static int width

spaceship image width in pixels

height

private static int height

spaceship image height in pixels

screenPos

private Point screenPos

position of spaceship on the screen

prevPos

private Point prevPos

previous position of spaceship

Constructor Detail

Ship

public Ship()

Default constructor initializing spaceship's image position to (300, 430).

Ship

public Ship(Point p)

Accepts screen coordinates for spaceship's image position.

Parameters:

p - screen location

Method Detail

setWidth

public static void setWidth(int w)

Sets the width of a spaceship image.

Parameters:

w - width in pixels

getWidth

public static int getWidth()

Gets the width of a spaceship image.

Returns:

width in pixels

setHeight

public static void setHeight(int h)

Sets the height of a spaceship image.

Parameters:

h - height in pixels

getHeight

public static int getHeight()

Gets the height of a spaceship image.

Returns:

height in pixels

setPosition

public void setPosition(Point p)

Sets the screen position of this spaceship image.

Parameters:

p - screen position

getPosition

public Point getPosition()

Gets the screen position.

Returns:

screen position

draw

public void draw(java.awt.Graphics g)

Overwrites the previous move and leaves the actual spaceship image handling and drawing to the applet's paint method.

Parameters:

g - the graphics context

move

public void move(boolean moveRight)

Moves spaceship either right or left.

Parameters:

moveRight - move spaceship right flag; true for right move

shoot

public Laser shoot()

Shoots a yellow laser from top of spaceship.

Returns:

a new Laser object.