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Affectors are actuators which apply force to nodes. Applying forces from script or GUI is not trivial because physics runs at 2000FPS while Script/GUI are updated once per frame (roughly 100FPS). Until now there was 1 "slot" for a mouse-cursor grab force. Affectors are an extension of this system - you can add multiple forces this way and control them in various ways. The mouse grab system was remade using affectors.
Planned features (general status: alpha version):
noderef/nodex/nodey
, like aeroengines/screwprops. Status: stub.MSG_EDI_ADD/REMOVE_AFFECTOR_REQUESTED
with arguments-struct. This works (used in mouse grab).game.pushMessage(MSG_EDI_ADD/REMOVE_AFFECTOR_REQUESTED, {})
with a dictionary of params. Status: ADD is coded but not tested, REMOVE isn't coded yet.