jfreerails.controller
Class FlatTrackExplorer

java.lang.Object
  jfreerails.controller.FlatTrackExplorer

All Implemented Interfaces:

java.io.Serializable, GraphExplorer

public class FlatTrackExplorer
extends java.lang.Object
implements GraphExplorer, java.io.Serializable

GraphExplorer that explorers track, the ints it returns are encoded PositionOnTrack objects.

Author:

Luke

See Also:

Serialized Form

Field Summary

private boolean	beforeFirst
(package private) PositionOnTrack	currentBranch
private PositionOnTrack	currentPosition
private static long	serialVersionUID
private ReadOnlyWorld	w

Constructor Summary

FlatTrackExplorer(ReadOnlyWorld world, PositionOnTrack p)

Method Summary

int	getEdgeCost() Returns the cost of the current edge.
(package private) Step	getFirstVectorToTry()
int	getH()
int	getPosition() Return the current edge.
static PositionOnTrack[]	getPossiblePositions(ReadOnlyWorld w, ImPoint p)
int	getVertexConnectedByEdge() Returns the vertex that is connected to the current vertex by the current edge.
ReadOnlyWorld	getWorld()
boolean	hasNextEdge()
void	moveForward() Moves this GraphExplorer from the current vertex to the vertex that is connected to the current vertex by the current edge.
void	nextEdge() Sets the current edge to the current vertex's next edge.
void	setPosition(int i)

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

currentPosition

private PositionOnTrack currentPosition

currentBranch

final PositionOnTrack currentBranch

beforeFirst

private boolean beforeFirst

w

private final ReadOnlyWorld w

Constructor Detail

FlatTrackExplorer

public FlatTrackExplorer(ReadOnlyWorld world,
                         PositionOnTrack p)

Method Detail

getWorld

public ReadOnlyWorld getWorld()

setPosition

public void setPosition(int i)

Specified by:

setPosition in interface GraphExplorer

getPosition

public int getPosition()

Description copied from interface: GraphExplorer

Return the current edge.

Specified by:

getPosition in interface GraphExplorer

moveForward

public void moveForward()

Description copied from interface: GraphExplorer

Moves this GraphExplorer from the current vertex to the vertex that is connected to the current vertex by the current edge.

Specified by:

moveForward in interface GraphExplorer

nextEdge

public void nextEdge()

Description copied from interface: GraphExplorer

Sets the current edge to the current vertex's next edge. Throws a NoSuchElementException if the vertex does not have another edge.

Specified by:

nextEdge in interface GraphExplorer

getVertexConnectedByEdge

public int getVertexConnectedByEdge()

Description copied from interface: GraphExplorer

Returns the vertex that is connected to the current vertex by the current edge.

Specified by:

getVertexConnectedByEdge in interface GraphExplorer

getEdgeCost

public int getEdgeCost()

Description copied from interface: GraphExplorer

Returns the cost of the current edge.

Specified by:

getEdgeCost in interface GraphExplorer

hasNextEdge

public boolean hasNextEdge()

Specified by:

hasNextEdge in interface GraphExplorer

getPossiblePositions

public static PositionOnTrack[] getPossiblePositions(ReadOnlyWorld w,
                                                     ImPoint p)

Parameters:

p - location of track to consider.

Returns:

an array of PositionOnTrack objects describing the set of possible orientations at this position (heading towards the center of the tile)

getFirstVectorToTry

Step getFirstVectorToTry()

getH

public int getH()

Specified by:

getH in interface GraphExplorer