1 files changed, 48 insertions, 0 deletions
diff --git a/src/game/CellImpl.h b/src/game/CellImpl.h
index ce5f6ed2ece..08182068af9 100644
--- a/src/game/CellImpl.h
+++ b/src/game/CellImpl.h
@@ -129,4 +129,52 @@ Cell::Visit(const CellLock<LOCK_TYPE> &l, TypeContainerVisitor<T, CONTAINER> &vi
         }
     }
 }
+
+template<class LOCK_TYPE,class T, class CONTAINER>
+inline void
+Cell::Visit(const CellLock<LOCK_TYPE> &l, TypeContainerVisitor<T, CONTAINER> &visitor, Map &m, float radius, float x_off, float y_off) const
+{
+    const CellPair &standing_cell = l.i_cellPair;
+    if (standing_cell.x_coord >= TOTAL_NUMBER_OF_CELLS_PER_MAP || standing_cell.y_coord >= TOTAL_NUMBER_OF_CELLS_PER_MAP)
+        return;
+
+    int left = 0, right = 0, upper = 0, lower = 0;
+
+    // Origin = (CENTER_GRID_CELL_OFFSET, CENTER_GRID_CELL_OFFSET)
+    if(CENTER_GRID_CELL_OFFSET - x_off < radius)
+        ++right;
+    if(CENTER_GRID_CELL_OFFSET + x_off < radius)
+        ++left;
+    if(CENTER_GRID_CELL_OFFSET - y_off < radius)
+        ++upper;
+    if(CENTER_GRID_CELL_OFFSET + y_off < radius)
+        ++lower;
+
+    if(!left && !right && !upper && !lower)
+    {
+        m.Visit(l, visitor);
+        return;
+    }                
+
+    CellPair begin_cell = standing_cell;
+    CellPair end_cell = standing_cell;
+
+    begin_cell << left; //note: need change << if left > 1
+    begin_cell -= lower;
+    end_cell >> right;
+    end_cell += upper;
+
+    // loop the cell range
+    for(uint32 x = begin_cell.x_coord; x <= end_cell.x_coord; x++)
+    {
+        for(uint32 y = begin_cell.y_coord; y <= end_cell.y_coord; y++)
+        {
+            CellPair cell_pair(x,y);
+            Cell r_zone(cell_pair);
+            r_zone.data.Part.nocreate = l->data.Part.nocreate;
+            CellLock<LOCK_TYPE> lock(r_zone, cell_pair);
+            m.Visit(lock, visitor);
+        }
+    }
+}
 #endif