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--- 4rpl:commands:registerscript [2022/05/11 08:23] – typo fix Karsten75
+++ 4rpl:commands:registerscript [2022/05/12 12:01] (current) – Karsten75
@@ Line 1: / Line 1: @@
 ~~NOTOC~~
-<=[[4rpl:start| Index]]
+<=[[4rpl:start| Index]] \\
+<= [[4rpl:start#Messaging]]
 :!: Available in version 1.3 and later.
@@ Line 18: / Line 19: @@
 === 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" ...)
 <=[[4rpl:start| Index]]

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