Init

Assets/ThirdParty/DestroyIt/Scripts/Runtime/Behaviors/EnableGravityAfter.cs

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+using UnityEngine;
+
+namespace DestroyIt
+{
+    /// <summary>
+    /// This script is used in conjunction with Object Pooling to enhance performance, in particular with mobile devices.
+    /// This script enables gravity on a game object's rigidbody over a small amount of time, so the physics load on the CPU is spaced out.
+    /// </summary>
+    public class EnableGravityAfter : MonoBehaviour
+    {
+        public float seconds;   // seconds to wait before enabling rigidbody gravity on this game object.
+        private float _timeLeft;
+        private bool _isInitialized;
+
+        void Start()
+        {
+            _timeLeft = seconds;
+            _isInitialized = true;
+        }
+
+        void OnEnable()
+        {
+            _timeLeft = seconds;
+        }
+
+        void Update()
+        {
+            if (!_isInitialized) return;
+
+            if (GetComponent<Rigidbody>() == null)
+            {
+                Destroy(this);
+                return;
+            }
+
+            _timeLeft -= Time.deltaTime;
+            if (_timeLeft <= 0)
+            {
+                GetComponent<Rigidbody>().useGravity = true;
+                Destroy(this);
+            }
+        }
+    }
+}