no more infinite trees

Game/Assets/Scripts/TreeSpawner.cs

@@ -9,19 +9,23 @@ public class TreeSpawner : MonoBehaviour
 
     void Update()
     {
-
-        Debug.Log("TreeSpawner running");
-
-        if (hasSpawned) return;
-
+        if (hasSpawned == false)
+        {
             if (player.position.y < transform.position.y - 3f)
             {
                 hasSpawned = true;
 
                 float treeHeight = GetComponent<SpriteRenderer>().bounds.size.y;
-            Vector3 spawnPos = (transform.position + Vector3.down * treeHeight) - new Vector3(0,-0.2f,0);
+                Vector3 spawnPos = transform.position + Vector3.down * treeHeight + new Vector3(0, 0.2f, 0);
 
                 Instantiate(treePrefab, spawnPos, Quaternion.identity);
             }
         }
+
+        // Delete trees that are far above the player
+        if (player.position.y < transform.position.y - 40f)
+        {
+            Destroy(gameObject);
+        }
+    }
 }