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recastnavigation

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Support and discussion group for Recast and Detour

https://github.com/recastnavigation/recastnavigation

If reporting an issue or requesting a feature, please do so using GitHub issues, following our contribution guidelines - you'll get a much faster response that way!

https://github.com/recastnavigation/recastnavigation/issues

https://github.com/recastnavigation/recastnavigation/blob/master/CONTRIBUTING.md

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8/14/25

Is there a way to merge navmesh

In my game logic, I need to active different navmesh when needed. I Want to merge them, But some

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Is there a way to merge navmesh

In my game logic, I need to active different navmesh when needed. I Want to merge them, But some

8/14/25

3/15/25

Is there a way to only merge coplanar triangle regions?

First off, I would like to say thank you for making Recast. It's really awesome. I had a question

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Is there a way to only merge coplanar triangle regions?

First off, I would like to say thank you for making Recast. It's really awesome. I had a question

3/15/25

6/17/24

CrowdAgent Priority

I have two teams of characters. I hope that the characters in team 1 can push each other, and the

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CrowdAgent Priority

I have two teams of characters. I hope that the characters in team 1 can push each other, and the

6/17/24

5/17/24

findNearestPoly failing

This is the output from my app: origin: 0, 0 mesh_top_right: 100, 100 mesh_bottom_left: 0, 0 Height:

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findNearestPoly failing

This is the output from my app: origin: 0, 0 mesh_top_right: 100, 100 mesh_bottom_left: 0, 0 Height:

5/17/24

Gabriel Garcia2

4/24/24

Contour simplification fails with holes generated by the layer partition method

I just realized I mixed the balls a bit here, when this is mentioned: "relies on the

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Contour simplification fails with holes generated by the layer partition method

I just realized I mixed the balls a bit here, when this is mentioned: "relies on the

4/24/24

Michael, Graham Pentheny2

1/17/24

Learning to use recast, python version

Hi Michael, There is no official python version of Recast, so any issues regarding that should be

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Learning to use recast, python version

Hi Michael, There is no official python version of Recast, so any issues regarding that should be

1/17/24

Alexei Andronov, Graham Pentheny3

7/3/23

Trying to learn recastnavigation

Thank you Graham! I have found my mistake to be that it was too small. Since agent was not set to 0

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Trying to learn recastnavigation

Thank you Graham! I have found my mistake to be that it was too small. Since agent was not set to 0

7/3/23

Hussein Khalil, … Bill Bierman12

6/27/23

Filtering of unreachable spans

I have done it Mikko's way in the past and had good results as well. And yeah, it's a bit

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Filtering of unreachable spans

I have done it Mikko's way in the past and had good results as well. And yeah, it's a bit

6/27/23

Victor Stone, Graham Pentheny2

6/22/23

What's more common? Erosion or pathfinding with radius?

In my experience, it's more common to have navmeshes that take into account agent radius than

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What's more common? Erosion or pathfinding with radius?

In my experience, it's more common to have navmeshes that take into account agent radius than

6/22/23

Silouane, Graham Pentheny2

5/20/23

Merging meshes generated with different parameters

Hi! Navmesh erosion is meant to push the edges of the navmesh away from obstacles by the agent's

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Merging meshes generated with different parameters

Hi! Navmesh erosion is meant to push the edges of the navmesh away from obstacles by the agent's

5/20/23

Douglas Holfve, Graham Pentheny2

5/20/23

Change the "ground" plane from XZ to YZ

Hi! Unfortunately there's some assumptions that are pretty deeply baked into recast. One of which

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Change the "ground" plane from XZ to YZ

Hi! Unfortunately there's some assumptions that are pretty deeply baked into recast. One of which

5/20/23

richard.g...@gmail.com, Graham Pentheny2

3/15/23

Tile Mesh Export not Including Off-Mesh Connections

The export/import code in RecastDemo is likely missing a ton of features and somewhat misleading.

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Tile Mesh Export not Including Off-Mesh Connections

The export/import code in RecastDemo is likely missing a ton of features and somewhat misleading.

3/15/23

文振宇, Graham Pentheny2

3/15/23

Problem for marking area type by vertices

You should generate a list of triangle area ID's from your input geometry and pass them as the

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Problem for marking area type by vertices

You should generate a list of triangle area ID's from your input geometry and pass them as the

3/15/23

PacaPop, Graham Pentheny2

3/15/23

Finding random point in specific area

There's an example of using these APIs in NavMeshTesterTool.cpp in RecastDemo. eg https://github.

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Finding random point in specific area

There's an example of using these APIs in NavMeshTesterTool.cpp in RecastDemo. eg https://github.

3/15/23

Jeff Weign, Graham Pentheny2

3/15/23

Given x-z coordinates, can navmesh returns the y value?

Hi, I'm not sure I fully understand what you're asking, but you can use dtNavMeshQuery::

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Given x-z coordinates, can navmesh returns the y value?

Hi, I'm not sure I fully understand what you're asking, but you can use dtNavMeshQuery::

3/15/23

mengu gulmen, Graham Pentheny2

3/15/23

Recast + Colyseus + Babylon.JS - agent position update problem

Hi, Firstly this seems like an issue with multiplayer state replication in your game, not anything

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Recast + Colyseus + Babylon.JS - agent position update problem

Hi, Firstly this seems like an issue with multiplayer state replication in your game, not anything

3/15/23

Jose Antonio, … Graham Pentheny3

3/15/23

Cluster Graph in Recast

Hi, Can you speak more about what your hope for this feature is exactly? Cluster graphs appear to be

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Cluster Graph in Recast

Hi, Can you speak more about what your hope for this feature is exactly? Cluster graphs appear to be

3/15/23

PaulS, Graham Pentheny2

3/15/23

Water under my terrain

Hey Paul. Hard to really know what the proper solution is without some more context/screenshots but

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Water under my terrain

Hey Paul. Hard to really know what the proper solution is without some more context/screenshots but

3/15/23

Gabriel Garcia, Graham Pentheny2

3/15/23

Why rcMarkConvexPolyArea uses an extruded xz-plane clamped intersection check instead of point-in-polygon?

Hey Gabriel. The intent of this function is to allow for marking arbitrary polygon-bounded areas of

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Why rcMarkConvexPolyArea uses an extruded xz-plane clamped intersection check instead of point-in-polygon?

Hey Gabriel. The intent of this function is to allow for marking arbitrary polygon-bounded areas of

3/15/23

Aresky Aresky, richard.g...@gmail.com2

12/6/22

How to raycast 3D check?

The way I've done it is to get the poly ref for the end point of the trace, and then add an extra

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How to raycast 3D check?

The way I've done it is to get the poly ref for the end point of the trace, and then add an extra

12/6/22

Patrick Pineda, … Vincent Lark6

11/23/22

Extract OBJ from navmesh '.bin' files?

Hey, just following this up again. I Got a working solution from recastjs, so this is great! It does

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Extract OBJ from navmesh '.bin' files?

Hey, just following this up again. I Got a working solution from recastjs, so this is great! It does

11/23/22

richard.g...@gmail.com

9/29/22

Refreshing off-mesh connections

Hi there! Is there an easy way to refresh off-mesh connections? Currently if I place some off-mesh

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Refreshing off-mesh connections

Hi there! Is there an easy way to refresh off-mesh connections? Currently if I place some off-mesh

9/29/22

8/27/22

Recast/Detour and procedural map generation

Hi, I'm making a multiplayer game with detour doing the pathfinding on the server side. I wanted

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Recast/Detour and procedural map generation

Hi, I'm making a multiplayer game with detour doing the pathfinding on the server side. I wanted

8/27/22

Enrique González Rodríguez, Mikko Mononen6

8/19/22

Wall and ceiling Nav Mesh in Unreal Engine

In Recast/Detour it is not possible to have multiple navmeshes connected together that have different

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Wall and ceiling Nav Mesh in Unreal Engine

In Recast/Detour it is not possible to have multiple navmeshes connected together that have different

8/19/22

Clarence, Mikko Mononen2

8/18/22

dtTileCache mesh generation

Tile cache assumes small tiles (around 32-64 squared) and does some tricks to make the update fast.

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dtTileCache mesh generation

Tile cache assumes small tiles (around 32-64 squared) and does some tricks to make the update fast.

8/18/22

5/22/22

Example streaming Tiles

Hello, It seems that there is a way to dynamically stream in Tiles into a NavMesh, but I cannot seem

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Example streaming Tiles

Hello, It seems that there is a way to dynamically stream in Tiles into a NavMesh, but I cannot seem

5/22/22

4/7/22

Problem with dtNavMeshQuery::findNearestPoly

Hello, I seem to have a problem with findNearestPoly which gives me a nearestPt (when displaying it,

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Problem with dtNavMeshQuery::findNearestPoly

Hello, I seem to have a problem with findNearestPoly which gives me a nearestPt (when displaying it,

4/7/22

lhhts...@gmail.com2

4/3/22

Is there a max tile size limit for dtTileCache?

And there is not even any error log? On Saturday, April 2, 2022 at 11:03:57 PM UTC-7 lhhts...@gmail.

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Is there a max tile size limit for dtTileCache?

And there is not even any error log? On Saturday, April 2, 2022 at 11:03:57 PM UTC-7 lhhts...@gmail.

4/3/22

8/8/21

Split large triangles

Hi, is there a way to limit the maximum size of triangles that doesn't involve lowering the tile

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Split large triangles

Hi, is there a way to limit the maximum size of triangles that doesn't involve lowering the tile

8/8/21

Work Life Balance Brian

7/30/21

Any idea to modify recast for generate mesh on the wall/90 degree geometry

Right now I have a spider style ai monster. and it has the ability to navigation in the level. I know

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Any idea to modify recast for generate mesh on the wall/90 degree geometry

Right now I have a spider style ai monster. and it has the ability to navigation in the level. I know

7/30/21

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