ballwar.model.strategy
Class MoveStrategy

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

All Implemented Interfaces:

IUpdateStrategy

public class MoveStrategy
extends ANoOpStrategy

An ANoOpStrategy-based strategy that modifies the velocity of the context ball through user key presses.

Field Summary

private int

_delta The amount the ball's velocity is changed in the requested direction each time a key press is registered.

Fields inherited from interface ballwar.model.IUpdateStrategy

NullObject

Constructor Summary

MoveStrategy()

Method Summary

void	init(Ball context) Initializes the context such that the movement keys of the currently selected player are registered with the environment.
void	updateState(Ball context) If the increment value (delta) is greater than 1, decrement the increment value.

Methods inherited from class ballwar.model.strategy.ANoOpStrategy

updateCollision, updateKill

Methods inherited from class java.lang.Object

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

Field Detail

_delta

private int _delta

The amount the ball's velocity is changed in the requested direction each time a key press is registered.

Constructor Detail

MoveStrategy

public MoveStrategy()

Method Detail

updateState

public void updateState(Ball context)

If the increment value (delta) is greater than 1, decrement the increment value. This will slowly return the sensitivity of the keyboard control back to its beginning value (1).

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 such that the movement keys of the currently selected player are registered with the environment. The movement keys will increment the velocity in the appropriate direction by the set amount (delta) when the respective key is pressed. The stop key will cause the velocity to become zero. Every time a key is pressed, the velocity increment is incremented. This causes the keys to appear to become more sensitivee the longer and more often the keys are pressed.

Specified by:

init in interface IUpdateStrategy

Overrides:

init in class ANoOpStrategy

Parameters:

context - This strategy's context.