Class Fireball

java.lang.Object

Fireball

public class Fireball
extends java.lang.Object

This class represents a Fireball that is ejected from a burning fire. When a Fireball hits the Hero, they lose the game. When a Fireball hits a Pant, those Pants are replaced by a new Fire.

This class should contain and use at least the following private fields:

• private Graphic graphic;
• private float speed;
• private boolean isAlive;

Constructor Summary

Constructors

Constructor and Description
Fireball(float x, float y, float directionAngle) This constructor initializes a new instance of Fireball at the specified location and facing a specific movement direction.

Method Summary

Modifier and Type	Method and Description
void	destroy() This helper method allows other classes (like Pant) to destroy a Fireball upon collision.
Graphic	getGraphic() This is a simple accessor for this object's Graphic, which may be used by other objects to check for collisions.
void	handleWaterCollisions(Water[] water) This method detects and handles collisions between any active (!= null) Water objects, and the current Fireball.
boolean	shouldRemove() This method communicates to the Level whether this Fireball is still in use versus ready to be removed from the Levels's ArrayList of Fireballs.
void	update(int time) This method is called repeatedly by the Level to draw and move the current Fireball.

Methods inherited from class java.lang.Object

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

Constructor Detail

Fireball

public Fireball(float x,
                float y,
                float directionAngle)

This constructor initializes a new instance of Fireball at the specified location and facing a specific movement direction. This Fireball should move with a speed of 0.2 pixels per millisecond.

Parameters:

x - the x-coordinate of this new Fireball's position

y - the y-coordinate of this new Fireball's position

directionAngle - the angle (in radians) from 0 to 2pi that this new Fireball should be both oriented and moving according to.

Method Detail

update

public void update(int time)

This method is called repeatedly by the Level to draw and move the current Fireball. When a Fireball moves more than 100 pixels beyond any edge of the screen, it should be destroyed and its shouldRemove() method should begin to return true instead of false.

Parameters:

time - is the amount of time in milliseconds that has elapsed since the last time this update was called.

getGraphic

public Graphic getGraphic()

This is a simple accessor for this object's Graphic, which may be used by other objects to check for collisions.

Returns:

a reference to this Fireball's Graphic object.

handleWaterCollisions

public void handleWaterCollisions(Water[] water)

This method detects and handles collisions between any active (!= null) Water objects, and the current Fireball. When a collision is found, the colliding water should be removed (array reference set to null), and this Fireball should also be removed from the game (its shouldRemove() should begin to return true when called). When this Fireball's shouldRemove method is already returning true, this method should not do anything.

Parameters:

water - is the Array of Water objects that have been launched by the Hero (ignore any null references within this array).

destroy

public void destroy()

This helper method allows other classes (like Pant) to destroy a Fireball upon collision. This method should ensure that the shouldRemove() methods only returns true after this method (destroy) has been called.

shouldRemove

public boolean shouldRemove()

This method communicates to the Level whether this Fireball is still in use versus ready to be removed from the Levels's ArrayList of Fireballs.

Returns:

true when this Fireball has either gone off the screen or collided with a Water or Pant object, and false otherwise.