How to display the trajectory of a nav mesh agent in runtime ?

Question

Hi, I'm making a tactical rpg based on Divinity Orginal Sin 2 and to move the character I use Unity's pathfinding, but I'd like the player to see which path the character will take before moving. I attach an image of what it looks like in Civ 5 (It's not a tactical rpg but it works the same way). I have already tried to do it with the "render line" component but it was not working well. Thank you in advance for your help.

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Answer 1

I know you said you already tried the render line component, but that really seems to be the best way and I would try that a little more before giving up; I found a link that looks very straightforward for you to create a script with and attach to whatever you are trying to draw the path for:

https://gamedev.stackexchange.com/questions/67839/is-there-a-way-to-display-navmesh-agent-path-in-unity

I have edited the above code, add this code to a new script you would create for your object and you can even plug in each one through the inspector:

 public class Example: MonoBehaviour
 {
     public LineRenderer line; //to hold the line Renderer
     public Transform target; //to hold the transform of the target
     public NavMeshAgent agent; //to hold the agent of this gameObject
 
     public void GetPath()
     {
         line.SetPosition(0, transform.position); //set the line's origin
 
         agent.SetDestination(target.position); //create the path
         yield WaitForEndOfFrame(); //wait for the path to generate
 
         DrawPath(agent.path);
 
         agent.Stop();//add this if you don't want to move the agent
     }
 
     public void DrawPath(NavMeshPath path)
     {
         if(path.corners.Length < 2) //if the path has 1 or no corners, there is no need
             return;
 
         line.SetVertexCount(path.corners.Length); //set the array of positions to the amount of corners
 
         for(int i = 1; i < path.corners.Length; i++){
             line.SetPosition(i, path.corners[i]); //go through each corner and set that to the line renderer's position
         }
 }

I hate to say it but if that doesn't make sense then there wouldn't be a more straightforward way to do what you are trying to do and that is probably the easiest solution available to you and literally made to do what you are asking.

How to display the trajectory of a nav mesh agent in runtime ?

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