~~NOTOC~~
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<= [[4rpl:start#Messaging]] 

:!: Available in version 1.3 and later.
====== RegisterScript======
RegisterScript(<-name)

===== Description =====
Registers the current script instance with a name. This name can be used with [[GetRegisteredScriptVar]]. If the same name is used as another script instance, this call will deregister the other script instance and replace it with the new one. A script on a unit is a unique instance. Each global script instance is also unique. 

:!: Note that registering a script is NOT persistent. It will not be saved in a save game file. You must reregister a script.

===== Examples =====
<code 4rpl>
RegisterScript("MyScript")
</code>

=== See Also ===
[[DeregisterScript]]

=== Discussion ===
This was added to CW4 as an attempt to give a similar API to what was in CW3.  Messaging is likely the better option in most cases.

This works a lot like messaging.  There is a global map and RegisterScript adds an entry into that map with the name you specify and the script it is called from.  So it stores a named reference to a script instance in a global map,  Get/SetRegiseredScriptVar looks up that instance in the map and then Gets/Sets a var on it.  So if you have a Foo script attached to Unit A and Foo calls RegisterScript("AName"), that will be a problem if another instance of Unit A runs Foo and it does the same thing.  So Foo would more likely call RegisterScript("AName:" self concat) or something like that.  And the only reason it would ever call RegisterScript would be so some other script could get/set some variable on it 

It makes most sense in a scenario where there is a single global script.  Maybe "MapController".  That script calls RegisterScript("MapController").  Then other scripts anywhere can call Get/SetRegisteredScriptVar("MapController" ...)

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