Category:Filters

Many entities can use a filter: an entity that examines each potential activation/activator and discards it unless it matches certain criteria. A list of all filter entities is lower down this page.

Tip:Filters can be combined using filter_multi.

Examples

• Filter Applications
• wiseDoorFilter.zip, an example map using filters to lock and unlock a door by detection of the presence of crates and barrels.

For Programmers

Programmers do not need to use filter entities, since they already have direct access to all of the requisite data. Source's C++ filter classes are instead used to decide where data should be sent.

• CRecipientFilter
• Todo: More…

Quirks

Filters can't be disabled by other entities' Outputs, only killed.