Implement enemy spawning and following waypoints

Assets/Scripts/Components/NavMeshComponent.cs

@@ -0,0 +1,76 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using Sirenix.OdinInspector;
+using UnityEngine.AI;
+using UnityEngine.Events;
+
+[RequireComponent(typeof(NavMeshAgent))]
+public class NavMeshComponent : MonoBehaviour
+{
+    [SerializeField]
+    [ReadOnly]
+    public int currentWaypointIndex = 0;
+
+    [SerializeField]
+    [ReadOnly]
+    public WaypointsGroup waypointGroup;
+
+    [SerializeField]
+    [ReadOnly]
+    private NavMeshAgent agent;
+
+    [SerializeField]
+    private UnityEvent<float> onVelocityChanged;
+
+    private void Awake()
+    {
+        agent = GetComponent<NavMeshAgent>();
+    }
+
+    public void MoveTo(WaypointsGroup waypointGroup)
+    {
+        this.waypointGroup = waypointGroup;
+        
+        MoveToNext();
+    }
+
+    private void MoveToNext()
+    {
+        currentWaypointIndex++;
+        agent.destination = waypointGroup.waypoints[currentWaypointIndex]
+            .GetPosition();
+    }
+
+    private void Update()
+    {
+        var velocity = agent.velocity.magnitude / agent.speed;
+        onVelocityChanged.Invoke(velocity);
+
+        if (waypointGroup == null)
+            return;
+
+        if (ReachedDestinationOrGaveUp())
+        {
+            if (currentWaypointIndex != waypointGroup.waypoints.Count - 1)
+            {
+                MoveToNext();
+            }
+        }
+    }
+
+    private bool ReachedDestinationOrGaveUp()
+    {
+        
+        if (agent.pathPending)
+            return false;
+
+        if (agent.remainingDistance > agent.stoppingDistance)
+            return false;
+
+        if (!(!agent.hasPath || agent.velocity.sqrMagnitude == 0f)) 
+            return false;
+
+        return true;
+    }
+}