Overrides for no-path in autonavigation for bevy_input_focus
#22634
+284
−76
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Changes navigation to use a 3-state enum, distinguishing between "unset" neighbors, "explicitly removed" neighbors, and "known" neighbors. Unset neighbors can be overwritten by auto nav building, while explicitly removed slots cannot.
Documents surprising behavior when inputting a diagonal direction (ie. `NorthWest`) when one of the components are blocked (ie. `North`)
ickshonpe
reviewed
Jan 21, 2026
| pub enum NavNeighbor { | ||
| /// No neighbor explicitly set. | ||
| #[default] | ||
| Unset, |
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Doesn't this mean that it will be left to be determined automatically, so maybe Auto would be clearer?
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Renamed to Auto in latest commit.
| /// Do not find a neighbor. | ||
| Blocked, | ||
| /// The neighbor is known and set. | ||
| Neighbor(Entity), |
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NavNeighbor::Neighbor seems a bit redundant, maybe NavNeighbor::Set(Entity)?
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Renamed to Set in latest commit.
| .set(direction, b); | ||
| } | ||
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| /// Adds an edge blocking automatic naviation from an entity in a direction. |
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Suggested change
| /// Adds an edge blocking automatic naviation from an entity in a direction. | |
| /// Adds an edge blocking automatic navigation from an entity in a direction. |
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Thanks for catching that, fixed typo in latest commit.
kfc35
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Objective
bevy_input_focus: Ability to manually set “no navigation in a given direction” for an entity #22378 .Solution
Turn
NavNeighborsfrom storing an array ofOption<Entity>to an array ofNavNeighbor, an enum with 3 values:Unset(no explicitly set thing in this direction),Blocked(assume there is nothing in this direction to path to), andNeighbor(Entity).Testing
Changes tested using a new test,
test_respects_set_blocks, and manually using thedirectional_navigation_overrideexample. Each button on second page is restricted to left/right movement, as up/down are blocked.Showcase
I'm not quite sure how to showcase this, as it's a very input-oriented feature and the feature working means that nothing happens.