Nav Mesh issue

jamesfootlight · April 2016

Hi,

My player doesn't seem to walk to the edge of a nav mesh, and instead stops at his waist rather than stopping at his feet and using the full space of the nav mesh.

Rather than extending the nav mesh to an area that is not natural for the scene, am I doing something wrong with my player that is stopping him using the full nav mesh?

Tx

klarax · April 2016

might have something to do with a collider on the player? maybe you dont have it to be trigger?

jamesfootlight · April 2016

It is set to Is trigger and is down on his feet, but still has the issue

ChrisIceBox · April 2016

It could be that your Destination accuracy slider in the Settings Manager is too low. Raising this value will mean your characters move more closely to their intended destination.

jamesfootlight · April 2016

I tried that but still my character seems to walk outside of my nav mesh - see screenshots:

https://www.dropbox.com/sh/5du3nr42met118u/AAAXk9y7xcQw510PQy6b1yCUa?dl=0

ChrisIceBox · April 2016

What's the context of the first shot? It looks like there's a Path (blue line) and two Markers (arrows) that are outside the NavMesh - if you're explicitly telling a character to move outside a NavMesh like this, then they'll leave it.

jamesfootlight · April 2016

My character leaves the nav mesh regardless of choosing the markers, it is as if it is the middle of the player that is the boundary rather than his feet?

ChrisIceBox · April 2016

Have you checked if this is the case, then? What position is the 3D cursor at when he is selected and in Pivot mode?

jamesfootlight · April 2016

I wasn't sure where the pivot mode is , here are screenshots;

https://www.dropbox.com/sh/ku6dnivaeb9cy68/AAAorgP72r7XhQhjoIi66PK9a?dl=0

Eastman · April 2016

Looks like it's a case of the sprite that is parented to the character isn't properly aligned? You should be able to fix this by selecting and moving the sprite up so the feet align with the parent's pivot, or making sure the character sprites' pivots in the inspector is set to Bottom.

It should look something like this, where the character's pivot is at the feet:

While yours is currently like this, making the lower half of the character's sprite go outside the nav mesh:

ChrisIceBox · April 2016

Pivot mode:
http://docs.unity3d.com/Manual/Toolbar.html

jamesfootlight · April 2016

I see. I have a little problem with setting this up though, i have head, body, legs etc all with different pivot points. Would I need to put my pivot point at the bottom of the parent (this has no sprite renderer though). I have about 30 animations I would therefore have to change?

See how my character is set up:

https://www.dropbox.com/sh/ku6dnivaeb9cy68/AAAorgP72r7XhQhjoIi66PK9a?dl=0

So I am therefore slightly unsure how to ensure that the pivot point is at the bottom of all my animations etc as some of them need to be at the top etc.

Thank!s

ChrisIceBox · April 2016

The first shot suggests that the pivot is correct - it's how the cursor looks when the root gameobject is selected that's important.

Is this issue specific to just this NavMesh, or is it down to the Player? If you move an NPC about (or a different Player prefab), does the issue still occur? What is the scale/position of the NavMesh's Transform? There used to be a bug related to NavMeshes that were scaled up, but that should have been fixed quite some time ago.

jamesfootlight · April 2016

Screenshot of cursor with root gameobject attached.

https://www.dropbox.com/s/0keh6yenszpc847/Screen Shot 2016-04-18 at 07.33.22.png?dl=0

jamesfootlight · April 2016

And of the inspector for root when clicked on:

https://www.dropbox.com/s/n82kcxe8thhrm25/Screen Shot 2016-04-18 at 07.38.32.png?dl=0

jamesfootlight · April 2016

With pivot view selected;

https://www.dropbox.com/s/f449nxlmhc1gwqu/Screen Shot 2016-04-18 at 07.40.16.png?dl=0

jamesfootlight · April 2016

But in my scene, i have to raise the height position of the nav mesh as the players boundary is still in the middle of the player rather than the feet.

See here:

https://www.dropbox.com/s/y3xylhwh1sev66b/Screen Shot 2016-04-18 at 07.43.07.png?dl=0

Same in this scene (all navmeshes are 1 x1 scale)

https://www.dropbox.com/s/xmih4jnobg5bvd8/Screen Shot 2016-04-18 at 07.45.01.png?dl=0

ChrisIceBox · April 2016

That the Audio icon is in the centre of the player during gameplay suggests that the Player sprite itself is changing position at runtime - check that the Sprite child is at position (0,0,0) both in the prefab and when the game is running. If it's changing during gameplay, it could be that you've animated the sprite's position by accident in your Idle animation - you should remove this channel from the animation if this is the case.

jamesfootlight · April 2016

Hi,

Please see animations in motion and positions in this video, I am a bit unsure how to sort this:

https://www.dropbox.com/s/homk75ej3fwqkt7/NAV MESH ISSUE.mov?dl=0

The positions seems to be at 0,0,0 whilst game is running

ChrisIceBox · April 2016

Does it work if you temporarily disable the sorting map, and are the pivots of the original sprites set to the bottom? By default, they'll be at the centre of the sprite, so you have to actively set them to be at the bottom. If they are already, PM me the character files and I shall take a closer look.

jamesfootlight · April 2016

Thanks, I will try this out and if not i will PM character files to you ASAP

Nav Mesh issue

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Nav Mesh issue

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