[Add] Chunk Limit

Assets/Scripts/WorldGen/InfiniteWorldGenerator.cs

@@ -60,7 +60,7 @@ namespace InfiniteWorld
             }
 
             lastGeneratedCenter = playerChunk;
-            GenerateAround(playerChunk);
+            UpdateActiveChunks(playerChunk);
         }
 
         private void EnsureSceneInfrastructure()
@@ -111,6 +111,12 @@ namespace InfiniteWorld
             return true;
         }
 
+        private void UpdateActiveChunks(Vector2Int centerChunk)
+        {
+            GenerateAround(centerChunk);
+            UnloadDistantChunks(centerChunk);
+        }
+
         private void GenerateAround(Vector2Int centerChunk)
         {
             for (int y = -generationRadius; y <= generationRadius; y++)
@@ -132,6 +138,47 @@ namespace InfiniteWorld
             }
         }
 
+        private void UnloadDistantChunks(Vector2Int centerChunk)
+        {
+            List<Vector2Int> coordsToRemove = new List<Vector2Int>();
+            foreach (KeyValuePair<Vector2Int, GeneratedChunk> pair in chunks)
+            {
+                if (IsWithinActiveRadius(pair.Key, centerChunk))
+                {
+                    continue;
+                }
+
+                coordsToRemove.Add(pair.Key);
+            }
+
+            for (int i = 0; i < coordsToRemove.Count; i++)
+            {
+                Vector2Int coord = coordsToRemove[i];
+                if (!chunks.TryGetValue(coord, out GeneratedChunk chunk))
+                {
+                    continue;
+                }
+
+                chunks.Remove(coord);
+                if (chunk.Root != null)
+                {
+                    Destroy(chunk.Root.gameObject);
+                }
+
+                RefreshNeighborBorders(coord + Vector2Int.up);
+                RefreshNeighborBorders(coord + Vector2Int.right);
+                RefreshNeighborBorders(coord + Vector2Int.down);
+                RefreshNeighborBorders(coord + Vector2Int.left);
+            }
+        }
+
+        private bool IsWithinActiveRadius(Vector2Int coord, Vector2Int centerChunk)
+        {
+            int dx = Mathf.Abs(coord.x - centerChunk.x);
+            int dy = Mathf.Abs(coord.y - centerChunk.y);
+            return dx <= generationRadius && dy <= generationRadius;
+        }
+
         private GeneratedChunk CreateChunk(Vector2Int coord)
         {
             GameObject chunkObject = new GameObject($"Chunk_{coord.x}_{coord.y}");