Emancipation Grid
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An Emancipation Grid (also Emancipation Grill or more commonly, Fizzler), is a special energy field in Portal 2 which resets the portal gun of any player (destroying both portals) and vaporizes other objects that touch it.
In Portal, the Emancipation Grid is composed of two models, a trigger-textured invisible trigger_portal_cleanser and a particle system emitter (info_particle_system).
In Portal 2, however, it is composed of an entity (trigger_portal_cleanser) combined with a pair of models (fizzler_mdl).
If a fizzler is in a stacked form, several entities should be used as the portal gun will make the field flash white when firing on it; For consistency, official maps use this approach.
External links
- Example map using this tutorial. VMF included.