Analytical Perspectives in Game Design

 

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Class bvyy.smf.StateMachine 

java.lang.Object
   |
   +----bvyy.smf.StateMachine
public abstract class StateMachine
extends Object
implements Serializable, StateChangeListener
This is the class that allows a state change command to be created and then processed.

Intent

To allow the functioning of a state machine to appear as if it is just one class. This hides the internal represnetation of the state machine.

Motivation

I am not sure of the precise implementation of the state machine. This allows the interface to be defined, but the implementation to vary. For instance there is already a class for a linear state machine as opposed to a meshed-state state-machine.

Version:
1.0.2 24 May 1998
Author:
(c)1998 Brian Voon Yee Yap

Variable Index

o changes
o modifies
o myName
o vetos

Constructor Index

o StateMachine()
The default constructor for this bean.
o StateMachine(StringTokenizer)
Construct a state machine.

Method Index

o addModifiableChangeListener(ModifiableChangeListener)
Add a ModifiableListener to the listener list.
o addPropertyChangeListener(PropertyChangeListener)
Add a PropertyChangeListener to the listener list.
o addVetoableChangeListener(VetoableChangeListener)
Add a VetoableListener to the listener list.
o fireStateChange(ModifiableChangeEvent)
Change the state from the current state to a new state.
o getName()
Get the name of this state machine.
o getState()
Returns the current state of the state machine.
o getStateTransitions()
Gets the states that can be reached from the current state.
o removeModifiableChangeListener(ModifiableChangeListener)
Remove a ModifiableChangeListener from the listener list.
o removePropertyChangeListener(PropertyChangeListener)
Remove a PropertyChangeListener from the listener list.
o removeVetoableChangeListener(VetoableChangeListener)
Remove a VetoableChangeListener from the listener list.
o setName(String)
Set the name of this state machine.

Variables

o changes 
 protected PropertyChangeSupport changes
o vetos 
 protected VetoableChangeSupport vetos
o modifies 
 protected ModifiableChangeSupport modifies
o myName 
 protected String myName

Constructors

o StateMachine 
 public StateMachine()
The default constructor for this bean.

o StateMachine 
 public StateMachine(StringTokenizer specification)
Construct a state machine.

Methods

o getState 
 public abstract String getState()
Returns the current state of the state machine.

o getStateTransitions 
 public abstract String getStateTransitions()
Gets the states that can be reached from the current state. An array of new states is returned.

o addPropertyChangeListener 
 public void addPropertyChangeListener(PropertyChangeListener l)
Add a PropertyChangeListener to the listener list.

o removePropertyChangeListener 
 public void removePropertyChangeListener(PropertyChangeListener l)
Remove a PropertyChangeListener from the listener list.

o addVetoableChangeListener 
 public void addVetoableChangeListener(VetoableChangeListener l)
Add a VetoableListener to the listener list.

o removeVetoableChangeListener 
 public void removeVetoableChangeListener(VetoableChangeListener l)
Remove a VetoableChangeListener from the listener list.

o addModifiableChangeListener 
 public void addModifiableChangeListener(ModifiableChangeListener l)
Add a ModifiableListener to the listener list.

o removeModifiableChangeListener 
 public void removeModifiableChangeListener(ModifiableChangeListener l)
Remove a ModifiableChangeListener from the listener list.

o setName 
 public void setName(String newName)
Set the name of this state machine.

Parameters:
newName - The name that will replace the existing name.
o getName 
 public String getName()
Get the name of this state machine. 

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22/11/99

 

See also: [Role Playing Games] [Game Engine]
© 1998, 1999 Brian Yap. These pages are available under the GNU licence.