Resolved the obstacle spawning issue

Assets/Scripts/Pooling/MultiPrefabPool.cs

@@ -100,7 +100,7 @@ namespace Pooling
         /// <returns>An object ready to use</returns>
         public virtual T Get(int prefabIndex)
         {
-            T obj;
+            T obj = null;
             
             // Track usage frequency
             if (prefabUsageCount.ContainsKey(prefabIndex))
@@ -112,27 +112,71 @@ namespace Pooling
                 prefabUsageCount[prefabIndex] = 1;
             }
             
+            // Try to get a valid object from the pool, cleaning up any destroyed objects
             if (pooledObjects.ContainsKey(prefabIndex) && pooledObjects[prefabIndex].Count > 0)
             {
-                obj = pooledObjects[prefabIndex].Pop();
-                totalPooledCount--;
+                Debug.Log($"[{GetType().Name}] Found {pooledObjects[prefabIndex].Count} objects in pool for prefab index {prefabIndex}");
+                
+                // Keep trying until we find a valid object or the pool is empty
+                while (pooledObjects[prefabIndex].Count > 0)
+                {
+                    obj = pooledObjects[prefabIndex].Pop();
+                    totalPooledCount--;
+                    
+                    // Check if the object is still valid (not destroyed)
+                    if (obj != null && obj.gameObject != null)
+                    {
+                        Debug.Log($"[{GetType().Name}] Retrieved valid object {obj.name} from pool, current active state: {obj.gameObject.activeInHierarchy}");
+                        break; // Found a valid object
+                    }
+                    else
+                    {
+                        // Object was destroyed, continue looking
+                        Debug.LogWarning($"[{GetType().Name}] Found destroyed object in pool, removing it");
+                        obj = null;
+                    }
+                }
             }
             else
             {
-                // Create new object without adding to pool
-                T prefab = prefabs[prefabIndex];
-                obj = Instantiate(prefab, transform);
+                Debug.Log($"[{GetType().Name}] No objects in pool for prefab index {prefabIndex}, creating new one");
             }
             
+            // If we couldn't find a valid object in the pool, create a new one
+            if (obj == null)
+            {
+                T prefab = prefabs[prefabIndex];
+                obj = Instantiate(prefab, transform);
+                Debug.Log($"[{GetType().Name}] Created new object {obj.name} from prefab, active state: {obj.gameObject.activeInHierarchy}");
+            }
+            
+            // Ensure the object is valid before proceeding
+            if (obj == null || obj.gameObject == null)
+            {
+                Debug.LogError($"[{GetType().Name}] Failed to create valid object for prefab index {prefabIndex}");
+                return null;
+            }
+            
+            // CRITICAL FIX: Reset position to safe location BEFORE activation
+            // This prevents off-screen checks from triggering during spawn process
+            Vector3 originalPosition = obj.transform.position;
+            obj.transform.position = new Vector3(0f, -1000f, 0f);
+            Debug.Log($"[{GetType().Name}] Moved object {obj.name} from {originalPosition} to safe position before activation");
+            
+            Debug.Log($"[{GetType().Name}] About to activate object {obj.name}, current state: {obj.gameObject.activeInHierarchy}");
             obj.gameObject.SetActive(true);
+            Debug.Log($"[{GetType().Name}] After SetActive(true), object {obj.name} state: {obj.gameObject.activeInHierarchy}");
             
             // Call OnSpawn for IPoolable components
             IPoolable poolable = obj.GetComponent<IPoolable>();
             if (poolable != null)
             {
+                Debug.Log($"[{GetType().Name}] Calling OnSpawn for object {obj.name}");
                 poolable.OnSpawn();
+                Debug.Log($"[{GetType().Name}] After OnSpawn, object {obj.name} state: {obj.gameObject.activeInHierarchy}");
             }
             
+            Debug.Log($"[{GetType().Name}] Returning object {obj.name} with final state: {obj.gameObject.activeInHierarchy}");
             return obj;
         }
         
@@ -152,33 +196,61 @@ namespace Pooling
                 poolable.OnDespawn();
             }
             
-            // Check if we're under the maximum pool size for this prefab type
-            bool keepObject = totalPooledCount < totalMaxPoolSize;
+            // Always deactivate and parent the object
+            obj.gameObject.SetActive(false);
+            obj.transform.SetParent(transform);
             
-            // Additional constraint: don't keep too many of any single prefab type
-            if (pooledObjects.ContainsKey(prefabIndex) && 
-                pooledObjects[prefabIndex].Count >= maxPerPrefabPoolSize)
+            // Initialize stack if it doesn't exist
+            if (!pooledObjects.ContainsKey(prefabIndex))
             {
-                keepObject = false;
+                pooledObjects[prefabIndex] = new Stack<T>();
             }
             
-            if (keepObject)
+            // Check if we need to trim this specific prefab type's pool
+            if (pooledObjects[prefabIndex].Count >= maxPerPrefabPoolSize)
             {
-                obj.gameObject.SetActive(false);
-                obj.transform.SetParent(transform);
-                
-                if (!pooledObjects.ContainsKey(prefabIndex))
+                // Remove the oldest object from this prefab's pool to make room
+                if (pooledObjects[prefabIndex].Count > 0)
                 {
-                    pooledObjects[prefabIndex] = new Stack<T>();
+                    T oldestObj = pooledObjects[prefabIndex].Pop();
+                    if (oldestObj != null && oldestObj.gameObject != null)
+                    {
+                        Destroy(oldestObj.gameObject);
+                        totalPooledCount--;
+                    }
+                }
+            }
+            
+            // Check global pool limit
+            if (totalPooledCount >= totalMaxPoolSize)
+            {
+                // Find the prefab type with the most pooled objects and remove one
+                int maxCount = 0;
+                int prefabToTrim = -1;
+                
+                foreach (var kvp in pooledObjects)
+                {
+                    if (kvp.Value.Count > maxCount)
+                    {
+                        maxCount = kvp.Value.Count;
+                        prefabToTrim = kvp.Key;
+                    }
                 }
                 
-                pooledObjects[prefabIndex].Push(obj);
-                totalPooledCount++;
-            }
-            else
-            {
-                Destroy(obj.gameObject);
+                if (prefabToTrim >= 0 && pooledObjects[prefabToTrim].Count > 0)
+                {
+                    T oldestObj = pooledObjects[prefabToTrim].Pop();
+                    if (oldestObj != null && oldestObj.gameObject != null)
+                    {
+                        Destroy(oldestObj.gameObject);
+                        totalPooledCount--;
+                    }
+                }
             }
+            
+            // Now add the current object to the pool
+            pooledObjects[prefabIndex].Push(obj);
+            totalPooledCount++;
         }
         
         /// <summary>