ballwar.model.strategy
Class AUpdateStrategy

java.lang.Object
  ballwar.model.strategy.AUpdateStrategy

All Implemented Interfaces:

IUpdateStrategy

Direct Known Subclasses:

Change1Strategy, Change2Strategy, DrunkenStrategy, StraightStrategy

public abstract class AUpdateStrategy
extends Object
implements IUpdateStrategy

Abstract strategy that provides random initialization of a ball.

Field Summary

private static int	_MaxRadius The maximum radius that a ball can have.
private static int	_MaxSpeed The maximum speed a ball may have.
private Rectangle	_MaxVel The minimum and maximum values of a ball's velocityl.
private static int	_MinRadius The minimum radius that a ball can have.
private static IRandomizer	_Rand Randomizer to generate desired random value.

Fields inherited from interface ballwar.model.IUpdateStrategy

NullObject

Constructor Summary

AUpdateStrategy()

Method Summary

void	init(Ball context) Initializes the ball with a random radius, velocity, location (within the bounds of the ball's environment) and color.
void	kill(Ball context) Calls the context's doKill() method to remove it from the system.
void	updateCollision(Ball context, Ball target) No-op.
abstract void	updateState(Ball context) Abstract behavior relegated to concrete subclass.

Methods inherited from class java.lang.Object

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

Field Detail

_Rand

private static final IRandomizer _Rand

Randomizer to generate desired random value.

_MaxRadius

private static final int _MaxRadius

The maximum radius that a ball can have.

See Also:

Constant Field Values

_MinRadius

private static final int _MinRadius

The minimum radius that a ball can have.

See Also:

Constant Field Values

_MaxSpeed

private static final int _MaxSpeed

The maximum speed a ball may have.

See Also:

Constant Field Values

_MaxVel

private Rectangle _MaxVel

The minimum and maximum values of a ball's velocityl.

Constructor Detail

AUpdateStrategy

public AUpdateStrategy()

Method Detail

updateState

public abstract void updateState(Ball context)

Abstract behavior relegated to concrete subclass.

Specified by:

updateState in interface IUpdateStrategy

Parameters:

context - The ball to update.

init

public void init(Ball context)

Initializes the ball with a random radius, velocity, location (within the bounds of the ball's environment) and color. The ball's mass is set to be equal to its area.

Specified by:

init in interface IUpdateStrategy

Parameters:

context - The ball to initialize.

updateCollision

public void updateCollision(Ball context,
                            Ball target)

No-op.

Specified by:

updateCollision in interface IUpdateStrategy

Parameters:

context - not used

target - not used

kill

public void kill(Ball context)

Calls the context's doKill() method to remove it from the system.

Specified by:

kill in interface IUpdateStrategy

Parameters:

context - The ball to kill.