View source for How to Control Junctions in Sessions

The screenshots shown below give examples of how junction settings can be used to control the operation of a session.

='''Application 1: Presetting Junctions'''=

==The Scenario==

When a consist reaches a trigger, the junctions ahead are set and locked into position.

==Rules Used==

*'''[[Session_Rule_List_with_Parameters#Trigger_Check_Rule|Trigger Check Rule]]''' to trigger the event.
*'''[[Session_Rule_List_with_Parameters#Set_Junctions_Rule|Set Junctions Rule]]''' to set junctions.

==Session Rules Screenshot==
<table>
<tr>
<td>[[file:SetJunctions.JPG]]</td>
</tr>
</table>

==Example Explanation==

*'''Line 1: Trigger Check''' The event is triggered when the consist reaches a trigger. This executes the following rule. 
**'''Line 2: Set Junctions''' Sets selected junctions to set directions and specifies the level of control by the users and AI.
<table>
<tr>
<td>[[file:SetJunctionsList.JPG]]</td>
</tr>
</table>

='''Application 2: Asking the User to Set Junctions'''=

==The Scenario==

A consist has been halted at a trigger placed in front of a junction. The user will be asked to set that junction and the following junction before the consist can proceed. 

==Preconditions==
*'''[[Session_Rule_List_with_Parameters#Navigation_Display_Rule|Navigation Display Rule]]''' to create a navigation point set.

==Rules Used==

*'''[[Session_Rule_List_with_Parameters#Wait_on_Navigation_Point_Rule|Wait on Navigation Point Rule]]''' to trigger the event.
*'''[[Session_Rule_List_with_Parameters#Message_Popup_Rule|Message Popup Rule]]''' to open a message window on the screen.
*'''[[Session_Rule_List_with_Parameters#Multiple_Junction_Alignment_Check_Rule|Multiple Junction Alignment Check Rule]]''' to test if specified junctions are set correctly.

==Session Rules Screenshot==
<table>
<tr>
<td>[[file:TestJunctions.JPG]]</td>
</tr>
</table>

==Example Explanation==

*'''Line 1: Wait on Navigation Point''' The event is triggered when the consist halts at the navigation point assigned to the trigger. This executes the following rules simultaneously 
**'''Line 2: Message Popup''' Displays a message window asking that the next two junctions be manually set.
**'''Line 3: Multiple Junction Alignment Check''' tests the switch directions of the next two junctions and waits until they are aligned as specified.
<table>
<tr>
<td>[[file:JunctionSettings.JPG]]</td>
</tr>
<tr>
<td>Checking junction switch settings</td>
</tr>
</table>

The following line is executed only if the junctions are set correctly
*'''Line 4: Message Popup''' Displays a message window stating that the junctions are now correctly set.
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='''Trainz Wiki'''=
*'''<span class="plainlinks">[http://online.ts2009.com/mediaWiki/index.php/HowTo How to Guides]</span>'''
*'''[[Session Rule List with Parameters|Session Rules List (Alphabetical) with Parameters]]'''
*'''[[Session Rules By Categories With Properties|Session Rules List (Categories) With Parameters]]'''
<font size="3">'''Route Creation Tutorials:'''</font>
<div style="column-count:2;-moz-column-count:2;-webkit-column-count:2">
*'''[[How to Use Layers]]'''
</div>
<font size="3">'''Session Creation Tutorials:'''</font>
<div style="column-count:2;-moz-column-count:2;-webkit-column-count:2">
*'''[[How to Create a HTML Asset]]'''
*'''[[How to Control Signals in Sessions]]'''
*'''[[How to Use Message Popup Rule]]
*'''[[How to Use Message Popup Rule (Applications)]]
*'''[[How to Use Navigation Point Rules]]'''
*'''[[How to Use Navigation Point Rules (Applications)]]'''
*'''[[How to Use Parent and Child Rules]]'''
*'''[[How to Use Track Triggers]]'''
*'''[[How to Use Variables in Sessions (Examples)]]'''
*'''[[Parent Rule List|List of Parent Rules]]'''
</div>

[[Category:How-to guides]]