Portal Funneling

Portal funneling is a game mechanic in the Portal series. It automatically corrects the positions of players and objects moving at a high speed towards a portal, so that they go perfectly into the portal rather than potentially hit the rim, much to the player's annoyance. It also appears to sometimes affect trajectory after the object goes through a portal. Note that players must be looking at a portal when funneling into it.

In Portal, funneling can be toggled in the options menu. In Portal 2 it can only be disabled by console command.

Related console commands and variables

sv_player_funnel_into_portals Enables funneling.

Todo: Effect description.

portal_funnel_debug Prints debugging info to the console when funnel code is triggered.

Todo: Effect description.

speed_funnelling_enabled Enables funneling when running on propulsion gel. (Note that the command spells "funneling" incorrectly.)

Todo: Effect description.

sv_player_funnel_gimme_dot When set to higher than 1, player trajectory will never be forced to be perpendicular to the portal after crossing it.

Todo: Effect description.

sv_player_funnel_height_adjust When the player is this far above a portal on the ground, funneling will occur. Below this height, none will happen.

Todo: Effect description.

sv_player_funnel_snap_threshold ^[Todo]

Todo: Effect description.

sv_player_funnel_speed_bonus ^[Todo]

Todo: Effect description.

sv_player_funnel_well_above ^[Todo]

Todo: Effect description.

sv_props_funnel_into_portals Enables funneling for objects such as prop_weighted_cubes.

Todo: Effect description.

sv_props_funnel_into_portals_deceleration ^[Todo]

Todo: Effect description.