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Fixed in 2021.1.X

Fixed in 2020.2.X

Votes

0

Found in

2019.3.4f1

2019.4

2020.2

Issue ID

1281314

Regression

No

NavMeshPath partial path calculation gets stuck on NavMeshLink

AI Navigation

-

Reproduction steps:
1. Open attached project "NavMesh.zip" and scene "SampleScene"
2. Enter Play Mode and observe Character2 and Character1 GameObjects' movement
3. Exit Play Mode
4. In Hierarchy window, disable Issue_1/Issue_2/Issue_3/Issue_4/Issue_5/'NavMeshLink (19) ISSUE' GameObject
5. Enter Play Mode and observe Character2 and Character1 GameObjects' movement
6. Exit Play Mode
7. In Hierarchy window, enable 'NavMeshLink (19) ISSUE' and disable 'NavMeshLink (20) ISSUE' GameObjects
8. Enter Play Mode and observe Character2 and Character1 GameObjects' movement

Expected result: In all three Play Mode instances, the characters move through the NavMeshLinks uninterrupted
Actual result: The characters are stuck on 'NavMeshLink (19) ISSUE' and 'NavMeshLink (20) ISSUE' GameObjects

Reproducible with: 2019.4.12f1, 2020.1.8f1, 2020.2.0b6
Could not test with: 2018.4.27f1 (script compilation errors)

  1. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.0a3

    The observed issue is caused by a misconfiguration of the NavMeshLinks. The NavMeshLink cost modifier should either be:
    (a) -1, which instead uses the area type cost, or
    (b) Non-negative, which computes the cost as (cost modifier * distance).

  2. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.0b11

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