imported>Dev akm |
imported>Dev akm |
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| What follows is essentially a long list of some common mistakes and their effects on players and/or the CS. Please suggest more ideas if you can.--[[User:Dev akm|Dev akm]] 17:56, 20 February 2007 (EST) | | What follows is essentially a long list of some common mistakes and their effects on players and/or the CS. Please suggest more ideas if you can.--[[User:Dev akm|Dev akm]] 17:56, 20 February 2007 (EST) |
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| = CTD (Crashes) =
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| == Nested If Versus And ==
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| Don't assume that if-tests stop at the first non hit. For example,
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| if (myref.isactor and myref.isincombat)
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| could cause a crash because myref.isincombat is always checked, even if myref isn't an actor. Use a nested IF statement instead.
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| == Existing Object Names as Variable Names ==
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| Don't use existing object names as variable names. The existing ones get priority. If you write:
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| ref bed
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| set bed to ThisBedref
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| player.moveto bed
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| this will probably cause a CTD because 'bed' is also a topic id and will get priority here.
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| Other possible mistake names: enemy, accept, contract, creatures, gift, help, inventory, positions, placeholder, tasks, themage.
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| == Quest Targets ==
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| Deleting a quest target will crash the CS. You can get around this by setting the conditions so that it's never displayed.
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| == Referencing Deleted Objects ==
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| It's easy to cause a crash by using a reference to an object that was deleted, or, in some cases to a dead actor.
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| For example, when using GetSelf in ScriptEffectUpdate or ScriptEffectFinish blocks for area of effect scripted spells, GetSelf can point to a dead body
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| This will cause a crash if you try a function that requires the object to be an actor, or even null if a summoned creature has been killed in the area.
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| == Bow Reach Bug ==
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| This bug is fairly well-known but still crops up on occasion. The game will CTD if a bow with Reach = 0 is equipped by anyone (player or NPC). Some of the vanilla Oblivion bows have this problem, so be sure not to replicate the error in your mod.
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| == Activate Self ==
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| When you script an object
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| #to [[Activate]] itself
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| #from a block that continously runs (i.e., [[GameMode]], [[MenuMode]], etc.)
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| #and not bypass the [[OnActivate]] block, as such:
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| <pre>begin GameMode
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| Activate player, 1
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| end
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| begin onActivate
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| ...
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| </pre>
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| you can cause an CTD. It seems that self-activation causes the entire script to run from the top, including the [[GameMode]] block, and so will [[Activate]] itself infinitely. You can prevent this by placing the [[OnActivate]] block before the self-activation, as such:
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| <pre>begin onActive
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| ...
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| end
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| begin GameMode
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| Activate player, 1
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| end</pre>
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| == Activating a Container (including NPC) ==
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| If you meet all of these conditions:
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| #[[Activate]] a [[Container]], so that you run it's [[OnActivate]] block, that is:
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| <pre>YourContainer.Activate player, 1</pre>
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| #from an [[Object scripts|Object Script]] (and maybe a [[Magic effect scripts|Magic Effect Script]], but a [[Quest scripts|Quest Script]] or direct activation would be safe)
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| #when a scripted item is in it (even a [[Scriptname]] declaration is too much)
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| you will get a CTD upon activation. The easiest way around it is to place the script on another object (an [[Activator]], etc.) and activate it instead of the container. You can also use a [[Quest scripts|Quest Script]] to activate the container, as such:
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| <pre>scn YourOpenerQuest
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| ref rContainerToOpen
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| float fQuestDelayTime
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|
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| begin GameMode
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| if (fQuestDelayTime != .01) ;to activate the container quicker
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| set fQuestDelayTime to .01
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| endif
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| rContainerToOpen.Activate player, 1
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| StopQuest YourOpenerQuest
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| end</pre>
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| and use this whenever you want to activate a container:
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| <pre>scn ActivatingScript
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| set YourOpenerQuest.rContainerToOpen to YourContainer
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| StartQuest YourOpenQuest</pre>
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| = Common Mistakes = | | = Common Mistakes = |