filter_activator_class
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 class hierarchy
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CFilterClass defined in filters.cpp
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filter_activator_class
is a point entity available in all 
Source games. It is a filter that checks the classname (keyvalue) of the activator.
Tip:Using the AddOutput input, it is possible to change the classname of an entity. This changes what filters see, but not the functionality of the entity, as long as the player does not save and reload the map after changing the classname.Keyvalues
Targetname:
- Name
(targetname)<string> - The targetname that other entities refer to this entity by.
- Filter Classname
(filterclass)<string> - The classname to filter by.
BaseFilter:
- Filter mode
(Negated)<boolean> - Inverts the filter, making the specified criteria fail and all others pass.
Inputs
BaseFilter:
TestActivator- Tests the entity that called the input (the
!activator) against the filter, and fires either theOnPassorOnFailoutput. 
Bug:Calling this input will cause the server to crash if the !activatorentity no longer exists. Do not use this input to test any entities which may be asynchronously deleted, such as players or projectiles, or in an i/o chain which might be initiated by entity deletion, such as theOnEndTouchoutput of a trigger.
Outputs
BaseFilter:
OnPass
OnFail- One of these will fire when
TestActivatorinput is sent, depending on if the activator is allowed by the filter or not.
