Package jmri.jmrit.tracker

Class StoppingBlock

java.lang.Object

jmri.jmrit.tracker.StoppingBlock

public class StoppingBlock
extends Object

Stop a train in a block if required.

Watches a Block object that is passing around a Throttle object as its value. When the Block goes OCCUPIED, check whether a signal is telling the train to stop; if so, force the Throttle to zero speed.

This contains multiple SignalHead objects, each associated with a Path that contains one or more BeanSettings (e.g. Turnout positions) and directions. When needed, this consults the paths to see which one is active (has its Turnouts set) and corresponds to the current direction of the block. There should be exactly one of these, which will then identify which signal to monitor.

Limitations:

• Current implementation does not protect against changing direction and backing out of the block
• Should track speed at time of stop and restore it on restart (or should it not restart? Optional restart?)

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Block	block
(package private) int	direction
(package private) SignalHead	sig1
(package private) SignalHead	sig2

Constructor Summary

Constructors

Constructor	Description
StoppingBlock(Block b)

Method Summary

Modifier and Type	Method	Description
void	addSignal(SignalHead s, int dir)
void	addSignal(SignalHead s1, SignalHead s2, int dir)
(package private) void	doRestart()
(package private) void	doSlow()
(package private) void	doStop()	Perform the stop operation
(package private) int	fastestAppearance()
(package private) void	handleBlockChange(PropertyChangeEvent e)
(package private) void	handleSignalChange(PropertyChangeEvent e)
(package private) void	setSpeed(float speed, boolean f1, boolean f2, boolean f3)
void	setSpeeds(float s, float f)	Set speeds.

Methods inherited from class java.lang.Object

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

Field Details

block

Block block

sig1

SignalHead sig1

sig2

SignalHead sig2

direction

int direction

Constructor Details

StoppingBlock

public StoppingBlock(Block b)

Method Details

handleBlockChange

void handleBlockChange(PropertyChangeEvent e)

handleSignalChange

void handleSignalChange(PropertyChangeEvent e)

addSignal

public void addSignal(SignalHead s,
 int dir)

addSignal

public void addSignal(SignalHead s1,
 SignalHead s2,
 int dir)

fastestAppearance

int fastestAppearance()

doStop

void doStop()

Perform the stop operation

doSlow

void doSlow()

doRestart

void doRestart()

setSpeed

void setSpeed(float speed,
 boolean f1,
 boolean f2,
 boolean f3)

setSpeeds

public void setSpeeds(float s,
 float f)

Set speeds.

Parameters:

s - the slow speed, default 0.3

f - the fast speed, default 0.6