frog.demo
Class CowSprite

java.lang.Object
  frog.demo.CowSprite

All Implemented Interfaces:

Sprite

public class CowSprite
extends Object
implements Sprite

Represents a single cow on the screen. CowSprites control the individual behavior of a cow which is to walk randomly about the bottom of the screen until a UFO begins to abduct the cow. CowSprite handles the animation and status of a cow as well as its position and image.

Author:

Team Better Recognize

Field Summary

static float	ABDUCT_SPEED Cow movement speed.
static int	ABDUCTED Status type.
static int	BEING_ABDUCTED Status type.
HashSet<UFOSprite>	chasers UFOs currently chasing this cow
static float	FALL_SPEED Cow movement speed.
static float	GROUND_Y Cow walking Y-position
static int	LEFT Direction type.
static int	RIGHT Direction type.
static float	SPEED Cow movement speed.
static int	STAND Direction type.
static int	WALKING Status type.

Constructor Summary

CowSprite(DemoGame game)
Creates a new CowSprite with a reference to the DemoGame that it is running within.

Method Summary

void	addChasingUFO(UFOSprite ufo) Adds an additional UFO to the list of chasing UFOs.
void	draw(Graphics g) Draws this sprite to the given Graphics context.
boolean	equals(Object other)
int	getState() Returns the current state of this cow.
float	getX() Returns the current X position of this cow.
float	getY() Returns the current Y position of this cow.
int	kill() Disables this sprite's draw method.
void	setState(int state) Sets the state of this cow to a new one.
void	setX(float x) Sets the current X position of this cow.
void	setY(float y) Sets the current Y position of this cow.
void	update() Causes this sprite update its current state.

Methods inherited from class java.lang.Object

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

Field Detail

SPEED

public static final float SPEED

Cow movement speed.

See Also:

Constant Field Values

ABDUCT_SPEED

public static final float ABDUCT_SPEED

Cow movement speed.

See Also:

Constant Field Values

FALL_SPEED

public static final float FALL_SPEED

Cow movement speed.

See Also:

Constant Field Values

GROUND_Y

public static final float GROUND_Y

Cow walking Y-position

See Also:

Constant Field Values

WALKING

public static final int WALKING

Status type.

See Also:

Constant Field Values

BEING_ABDUCTED

public static final int BEING_ABDUCTED

Status type.

See Also:

Constant Field Values

ABDUCTED

public static final int ABDUCTED

Status type.

See Also:

Constant Field Values

LEFT

public static final int LEFT

Direction type.

See Also:

Constant Field Values

RIGHT

public static final int RIGHT

Direction type.

See Also:

Constant Field Values

STAND

public static final int STAND

Direction type.

See Also:

Constant Field Values

chasers

public final HashSet<UFOSprite> chasers

UFOs currently chasing this cow

Constructor Detail

CowSprite

CowSprite(DemoGame game)

Creates a new CowSprite with a reference to the DemoGame that it is running within.

Parameters:

game - the DemoGame that this CowSprite appears in.

Method Detail

addChasingUFO

public void addChasingUFO(UFOSprite ufo)

Adds an additional UFO to the list of chasing UFOs. Chasing UFOs have targeted this cow for abduction. If this cow is abducted by a UFO, all UFOSprites are notified.

Parameters:

ufo - a UFO that is now chasing this cow.

draw

public void draw(Graphics g)

Description copied from interface: Sprite

Draws this sprite to the given Graphics context.

Specified by:

draw in interface Sprite

Parameters:

g - the Graphics context this sprite should draw itself to.

equals

public boolean equals(Object other)

Overrides:

equals in class Object

getState

public int getState()

Returns the current state of this cow. Possible values include:

• WALKING
• BEING_ABDUCTED
• ABDUCTED

Returns:

the current status of this cow.

getX

public float getX()

Returns the current X position of this cow.

Returns:

the current X position of this cow.

getY

public float getY()

Returns the current Y position of this cow.

Returns:

the current Y position of this cow.

setState

public void setState(int state)

Sets the state of this cow to a new one. Valid values are:

• WALKING
• BEING_ABDUCTED
• ABDUCTED

Parameters:

state - the state to set this cow to.

setX

public void setX(float x)

Sets the current X position of this cow.

Parameters:

x - a new X position for this cow.

setY

public void setY(float y)

Sets the current Y position of this cow.

Parameters:

y - a new Y position for this cow.

kill

public int kill()

Description copied from interface: Sprite

Disables this sprite's draw method. Performs any necessary clean up and displays any effects that need to appear upon this object's death. Some sprites may be worth points when they are killed. If this is the case, kill will return those points as an integer.

Specified by:

kill in interface Sprite

Returns:

number of points this sprite is worth, if any.

update

public void update()

Description copied from interface: Sprite

Causes this sprite update its current state. This may be moving by one step or adjusting it's current display picture.

Specified by:

update in interface Sprite