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Fixed in 2020.1

Fixed in 2018.4, 2019.2, 2019.3

Votes

0

Found in

2017.4.0f1

2018.2.20f1

2018.4.1f1

2019.1.0a1

2019.2.0a1

2019.3.0a1

Issue ID

1154946

Regression

No

[NavMesh] NavMesh fails to create all portals connecting two tiles when having obstacles aligned on the tile borders

AI

-

To reproduce:
1. Open QA attached project "1154946-NavMeshObstacleRepro.zip", scene City
2. Observe the area between two Nav Mesh Obstacles

Result: NavMesh path is calculated incorrectly due to obstacle positioning breaking the NavMesh tile borders

Reproduced in: 2018.2.21f1, 2018.4.1f1, 2019.1.4f1, 2019.2.0b3, 2019.3.0a4

Note: changing the positions of obstacles will yield different results (correct / incorrect) which depend on their positioning

  1. Response avatar

    Resolution Note (fix version 2020.1):

    Additional proposed workaround fairly easy to achieve for when the disconnected polygon edge is not on the tile border:

    When two obstacles tend to align their edges with one another the user can try and very slightly offset or rotate one of them in order to avoid creating an edge between the obstacles that aligns perfectly with them both. (That edge leads to imprecise calculations later in the algorithm.)

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