Disable NavigationMesh edge_max_length property by default
#79786
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Disables NavigationMesh edge_max_length property by default.
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Scony
approved these changes
Jul 22, 2023
YuriSizov
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Jul 25, 2023
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Disables NavigationMesh
edge_max_lengthproperty by default.This
edge_max_lengthis an optional ReCast 3D baking property that was set to12.0in ancient Godot times for arbitrary reasons.The value is so nonsensical low that basically every baking of a larger and flat surface would turn out as an inefficient and ugly navigation mesh that would also be bug-ridden in pathfinding due to the forced high density of long edges only in some areas.
Users could not connect this always unwanted result to this specific bake property so it should be disabled by default.
If
edge_max_lengthis set to0.0that optional feature is disabled in the ReCast baking process.It can still be enabled by user choice in the inspector or script manually.
The idea of this
edge_max_lengthproperty is that for pathfinding algorithms that travel through polygon centers or midpoints of edges it is better to keep the polygons and edges at a reasonable size to have a more accurate pathfinding result. It just does not work with large, flat and open areas.Godot pathfinding does not use such a cheap and bug-prone algorithm. The Godot pathfinding always travels through the calculated closest edge positions so the actual length of the edge or its midpoint does not really matter in this case.