Difference between revisions of "User:DavidJCobb/Stack dumping"

User:DavidJCobb/Stack dumping (edit)

Revision as of 03:35, 2 March 2015

101 bytes removed , 03:35, 2 March 2015

code snippet for BF

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imported>DavidJCobb

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 ** For OnItemAdded and OnItemRemoved, I list some additional methods for avoiding stack dumping [[Talk:OnItemAdded - ObjectReference#Facts about OnItemAdded|here]].
 ** OnItemAdded and OnItemRemoved don't appear to be able to run concurrently with themselves, so their stacks will be suspended as a matter of course.
-== Things to investigate ==
-=== How do update events work? ===
-*'''Possibility 1:''' when you call RegisterForSingleUpdate(''x''), Skyrim queues an update event to fire in ''x'' seconds. No new stacks are created.
-*'''Possibility 2:''' when you call RegisterForSingleUpdate(''x''), Skyrim immediately creates a call stack for OnUpdate, and suspends it for ''x'' seconds.
-**If this one is the case, then you would not be able to use update events to minimize generated stacks. Like, I seriously doubt it, but AFAIK this sort of thing is documented ''so little.''
-*'''Test procedure:''' RegisterForSingleUpdate(20.0), and then DumpPapyrusStacks using the debug console. See if an OnUpdate stack is dumped.
 == Miscellaneous facts ==
 * RegisterForSingleUpdate(''n'') does ''not'' create a stack and suspend it for ''n'' seconds. I have confirmed this experimentally.
+== Code snippets ==
+=== Process a task OnHit, and don't re-process for X seconds ===
+<source lang="Papyrus">
+Bool Property pbBusy = False Auto Hidden
+Bool Property pbProcessed = False Auto Hidden
+Event OnHit(ObjectReference akAggressor, Form akSource, Projectile akProjectile, Bool abPowerAttack, Bool abSneakAttack, Bool abBashAttack, Bool abHitBlocked)
+   If pbBusy || pbProcessed
+      Return
+   EndIf
+   pbBusy = True
+   ;
+   ; Do your processing here.
+   ;
+   pbProcessed = True
+   RegisterForSingleUpdate(x)
+   pbBusy = False
+EndEvent
+Event OnUpdate()
+   pbProcessed = False
+EndEvent
+</source>