2D NavMesh PathFinding......

Hi @vhman, yes it is a tile map. As mentioned, I already tried to tweak the agent radius and the voxels but there is still a problem in some concave areas, like these two below circled in red.
It is weird because you can see how the concave section in gree seems to be baked correctly.


Finally, this is my setup.

 

@chunky_octopus

Looks kind of crazy. Try set default area "non-walkable" and add "navmeshmodifier" to tilemap with "override area" - "walkable".

If you have isolated project with this issue send me PM, I will take a look.

 

Ah! Stupid error on my side, I inadvertently used a brush to "delete" some tiles so I added "walls" that just look like the ground.

The Nav surface was doing its job but I just couldn't see the walls.
Now it's fixed, thanks for the tip to invert the navmap and look at the non-walkables.

 

HI, does this work with just 2d sprites or does it need a tilemap?

I would like to make a sprite based game and use either 2d or 3d colliders to generate the nav mesh. Is this possible, if so, what is the best approach?

Thanks,

Adam

 

Hello @bz_apps
It works with sprites in tile map, squares, sprites or colliders.
Here is the list of scene samples:
https://github.com/h8man/RedHotSweetPepper/tree/master/Assets/Scenes

 

Ah amazing, thanks!

Another question that may not be directly related an more of a NavMesh thing, but do you know how to make the mesh tighter? At the moment, there is quite a lot of space around my sprites, I would ideally like the mesh to reach the edges of the sprites.

Thanks.

 

@bz_apps

You miss the point of how navmesh shown. It not where the edge of Agent are, but its center can be.
Check this issue and references there to clear all confusions.
https://github.com/h8man/NavMeshPlus/issues/67

 

Hello All,

Just made a small update that will not work in Unity 2019, so I made a branch https://github.com/h8man/NavMeshPlus/tree/unity-2019

this branch can be used in package manager for older unity versions

 

@bz_apps hello , if i have the bake scene to generate the "NavMesh-NavMesh" data. and can i use this asset to other runtime scene ??

 

@ChiuanWei I believe so, but never tried.

Need some time to investigate.

 

Hello All,

I found that navmeshsurface is 0 expandable, so I started implementation of navmesh extensions system
https://github.com/h8man/NavMeshPlus/tree/navmesh-extensions

So instead of writing new navmeshsurface2d we can extend navmeshsurface to navmeshsurface2d with navmeshcollectsources2d component.
https://github.com/h8man/RedHotSweetPepper/tree/navmesh-extensions

I will merge it to master somewhere during this weekend. So everyone can leave a feedback before that.

 

because the BIG world was created and generate the navmesh. but runtime the world is loaded with many separates. i and by the way . if two scenes were loaded, can i switch the camera and swtich the active navmesh ?

 

https://github.com/Unity-Technologies/NavMeshComponents/tree/master/Assets/Examples/Scenes there is a lot of samples, 4_sliding_window_infinite and 7b_dungeon_tile_prefabs. Check this samples and how they work,

NavMeshPlus is a "fork", so any sample from NavMeshComponents will work

 

good to know!!! thanks

 

All,

as for https://github.com/h8man/NavMeshPlus/tree/navmesh-extensions, I found few shortcomings in design, so I will take another week for development and redesign.

 

Is it possible to get it to work with tilesets & colliders at the same time?

In the attached picture I have a Startship object that uses a physics collider but I also have a grid with ground and wall tilesets. I already tried different combinations like adding the grid as a child to the navmesh object but it didnt work.

Thanks

 

Hello @ronald_ES

Yes, its possible. Just add tilemap 2d collider to tilemap, and move it as a child for navmesh.

n this weekend I'm planning to finish extensions system that will have more flexibility.

 

Great it works thank you

 

Is there a way to know if the builder is currently building when using the NavMeshSurface2d.BuildNavMeshAsync() operation? The unity docs says theres an isRunning static bool in the NavMeshBuilder class but doesn't exist when I try to use it.

 

Not quite sure why you need it. AsyncOperation has 'isDone' and 'progress' fields.

But in docs there is a note Note: There are two classes with the name NavMeshBuilder. They are declared in two different namespaces: UnityEngine.AI and UnityEditor.AI.

 

Hello All,

My weekly update is here. So I refactored code a bit, added extensions provider abstraction layer and introduced extension where we can specify root sources of navmesh. I will try to add caching extensions for efficient navmesh runtime update and will merge to master.. or I will get lazy and just pull everything as is)
https://github.com/h8man/NavMeshPlus/tree/navmesh-extensions

Regards,

 

Weekly update! Extensions system are in master. No cache implementation right now. System pretty fresh and fragile, new updates are comming.

 

Hi! Is there any way to make somehow layered navmesh? I have a map that has several layers and generated navmesh looks not very fitting due to obstacles placed on different layers. I simply wonder how someone would make that.

 

Hmm, it seems I got this, maybe I should use layer option in NavMeshSurface and then change navmeshes according to layer. But maybe there is more effective way?

 

@sinketita ,

Layers and NavMeshSurface layers is the way to go. But than you should connect navmesh layers together and handle navmesh links.

I don't have a sample for this case, nor wiki page or guidelines.

take a look at https://github.com/Unity-Technologies/NavMeshComponents it has more samples. (navmesh plus if a fork)

 

Is the sampling method compatible? I tried using it here. First it detects the Tilemap2d collider which it does properly, then I pass the collider position and the area mask to the method. Can't get it to go to line 68 where it detects unwalkable areas.

 

@ronald_ES, Yes. it just extension of NavMesh system.

But I have some idea - you can not sample point on unwalkable area (as it not part of navmesh). So check in opposite and reverse if condition:

Code (CSharp):

1. mask = -1 ~ (1 << areaIndex);

 

Hello All,

Thread will be continued on https://forum.unity.com/threads/2d-navmesh-plus-components-and-extensions-system.1280117/