ballwar.model.strategy
Class MultiStrategy

java.lang.Object
  ballwar.model.strategy.ANoOpStrategy
      ballwar.model.strategy.MultiStrategy

All Implemented Interfaces:

IUpdateStrategy

public class MultiStrategy
extends ANoOpStrategy

An ANoOpStrategy-based strategy that is the composition of two IUpdateStrategies. All behaviors are delegated sequentially to each of the composees.

Field Summary

private IUpdateStrategy	_s1 First IUpdateStrategy composee
private IUpdateStrategy	_s2 Second IUpdateStrategy composee

Fields inherited from interface ballwar.model.IUpdateStrategy

NullObject

Constructor Summary

MultiStrategy(IUpdateStrategy s1, IUpdateStrategy s2)
Constructor for the class.

Method Summary

void	init(Ball context) Initializes the context with the first then the second composee.
void	kill(Ball context) Delegates the kill request to the first then the second composee.
void	updateCollision(Ball context, Ball target) Delegates first to the first composee and then to the second composee.
void	updateState(Ball context) Updates the state of the context with the first composee and then the second composee.

Methods inherited from class java.lang.Object

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

Field Detail

_s1

private IUpdateStrategy _s1

First IUpdateStrategy composee

_s2

private IUpdateStrategy _s2

Second IUpdateStrategy composee

Constructor Detail

MultiStrategy

public MultiStrategy(IUpdateStrategy s1,
                     IUpdateStrategy s2)

Constructor for the class.

Parameters:

s1 - The first IUpdateStrategy composee

s2 - The second IUpdateStrategy composee

Method Detail

updateState

public void updateState(Ball context)

Updates the state of the context with the first composee and then the second composee.

Specified by:

updateState in interface IUpdateStrategy

Overrides:

updateState in class ANoOpStrategy

Parameters:

context - This strategy's context.

init

public void init(Ball context)

Initializes the context with the first then the second composee.

Specified by:

init in interface IUpdateStrategy

Overrides:

init in class ANoOpStrategy

Parameters:

context - This strategy's context.

updateCollision

public void updateCollision(Ball context,
                            Ball target)

Delegates first to the first composee and then to the second composee.

Specified by:

updateCollision in interface IUpdateStrategy

Overrides:

updateCollision in class ANoOpStrategy

Parameters:

context - This strategy's context.

target - The ball the context collided with.

kill

public void kill(Ball context)

Delegates the kill request to the first then the second composee. Note that the first composee may call the context's doKill() method, removing it from the system. The context is not yet garbage collected, so the second composee can execute normally, though perhaps without effect.

Specified by:

kill in interface IUpdateStrategy

Overrides:

kill in class ANoOpStrategy

Parameters:

context - This strategy's context.