NavMesh - Off Mesh Link - Velocity Control

I am using off mesh links to move an object between my nav meshes. However, I cannot seem to control the speed at which it crosses. I wish it to move at the same speed I have configured for my agent. I do not have animations. The movement itself is the operator sees. (Note. This is not for a game, but more of a simulation software)

The only thing I have seen that had some impact was to do the following:

Code (CSharp):

1.         if (agent.isOnOffMeshLink)
2.         {
3.             agent.speed = baseSpeed / 2;
4.             Debug.Log(agent.velocity);
5.         }
6.         else
7.         {
8.             agent.speed = baseSpeed;
9.         }

This is still not a smooth solution. Is there any way to accomplish my goal?

 

You could handle the OnOffMeshLink movement yourself - turn off Auto Traverse Off Mesh link in the inspector of the
Here is some Pseudo-code - the idea is to kick-off a co-routine to handle moving across a mesh link.

Code (CSharp):

1.  
2.  
3. if(agent.isOnOffMeshLink && !MoveAcrossNavMeshesStarted){
4.     StartCoRoutine(MoveAcrossNavMeshLink());
5.     MoveAcrossNavMeshesStarted=true;
6. }
7.  
8. IEnumerator MoveAcrossNavMeshLink()
9. {
10.         OffMeshLinkData data = agent.currentOffMeshLinkData;
11.         agent.updateRotation = false;
12.  
13.         Vector3 startPos = agent.transform.position;
14.         Vector3 endPos = data.endPos + Vector3.up * agent.baseOffset;
15.         float duration = (endPos-startPos).magnitude/agent.Velocity.magnitude;
16.         float t = 0.0f;
17.         float tStep = 1.0f/duration;
18.         while(t<1.0f){
19.             transform.position = Vector3.Lerp(startPos,endPos,t);
20.             agent.destination = transform.position;
21.             t+=tStep*Time.deltaTime;
22.             yield return null;
23.         }
24.         transform.position = endPos;
25.         agent.updateRotation = true;
26.         agent.CompleteOffMeshLink();
27.         MoveAcrossNavMeshesStarted= false;
28.  
29. }

 

Thanks. This works for me.

 

wouldn't this only work for one way though?

 

It has been a while since I wrote the pseudo-code , but I would assume it would work both ways - or if not , you have to do tweaks to data.endPos. it depends how Unity has set up the system. The best way is to do a test and see what happens.

 

Thanks - this works really well, both ways. You might want to store agent.destination in a temp Vector3 before starting the transition and reapply after completing the link, so it can continue on to whatever it's original destination was.