// MoveToClickPoint.cs
using UnityEngine;
using UnityEngine.AI;

// As found at https://docs.unity3d.com/Manual/nav-MoveToClickPoint.html

public class MoveToClickPoint : MonoBehaviour
{
    NavMeshAgent agent;

    void Start()
    {
        agent = GetComponent<NavMeshAgent>();
    }

    void Update()
    {
        if( Input.GetMouseButtonDown( 0 ) )
        {
            RaycastHit hit;

            if( Physics.Raycast( Camera.main.ScreenPointToRay( Input.mousePosition ), out hit, 100 ) )
            {
                agent.destination = hit.point;
            }
        }
    }
}