Adding trick spawn and movement to Experiment scene

Assets/Scripts/Spawner.cs

@@ -1,4 +1,5 @@
 using System.Collections;
+using System.Collections.Generic;
 using UnityEngine;
 
 public class Spawner : MonoBehaviour
@@ -7,6 +8,9 @@ public class Spawner : MonoBehaviour
     [SerializeField] private GameObject objectToSpawn;
     // Time interval between spawns
     public float spawnInterval = 1f;
+    [SerializeField] private int maxAlive = 0;
+
+    private readonly List<GameObject> spawned = new List<GameObject>();
 
     void Start()
     {
@@ -21,8 +25,32 @@ public class Spawner : MonoBehaviour
         {
             // Wait for the specified interval
             yield return new WaitForSeconds(spawnInterval);
+            if (objectToSpawn == null)
+            {
+                continue;
+            }
+
+            if (maxAlive > 0 && CountAlive() >= maxAlive)
+            {
+                continue;
+            }
+
             // Spawn the object at the spawner's position and rotation
-            Instantiate(objectToSpawn, transform.position, Quaternion.identity);
+            var instance = Instantiate(objectToSpawn, transform.position, Quaternion.identity);
+            spawned.Add(instance);
         }
     }
+
+    private int CountAlive()
+    {
+        for (var i = spawned.Count - 1; i >= 0; i--)
+        {
+            if (spawned[i] == null)
+            {
+                spawned.RemoveAt(i);
+            }
+        }
+
+        return spawned.Count;
+    }
 }