1 files changed, 25 insertions, 49 deletions

diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index c6cabf1..980d3cc 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -2183,10 +2183,6 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
  
         // Given a world position, get the GridRegion info for
         //   the region containing that point.
-        // Not needed on 0.9 grids
-        // 'pSizeHint' is the size of the source region but since the destination point can be anywhere
-        //     the size of the target region is unknown thus the search area might have to be very large.
-        // Return 'null' if no such region exists.
         protected GridRegion GetRegionContainingWorldLocation(IGridService pGridService, UUID pScopeID,
                             double px, double py, uint pSizeHint)
         {
@@ -2194,11 +2190,6 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             GridRegion ret = null;
             const double fudge = 2.0;
 
-            // One problem with this routine is negative results. That is, this can be called lots of times
-            //   for regions that don't exist. m_notFoundLocationCache remembers 'not found' results so they
-            //   will be quick 'not found's next time.
-            // NotFoundLocationCache is an expiring cache so it will eventually forget about 'not found' and
-            //   thus re-ask the GridService about the location.
             if (m_notFoundLocationCache.Contains(px, py))
             {
 //                m_log.DebugFormat("{0} GetRegionContainingWorldLocation: Not found via cache. loc=<{1},{2}>", LogHeader, px, py);
@@ -2207,60 +2198,45 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
             // As an optimization, since most regions will be legacy sized regions (256x256), first try to get
             //   the region at the appropriate legacy region location.
-            uint possibleX = (uint)Math.Floor(px);
-            possibleX -= possibleX % Constants.RegionSize;
-            uint possibleY = (uint)Math.Floor(py);
-            possibleY -= possibleY % Constants.RegionSize;
+            // this is all that is needed on 0.9 grids
+            uint possibleX = (uint)px & 0xffffff00u;
+            uint possibleY = (uint)py & 0xffffff00u;
             ret = pGridService.GetRegionByPosition(pScopeID, (int)possibleX, (int)possibleY);
             if (ret != null)
             {
 //                m_log.DebugFormat("{0} GetRegionContainingWorldLocation: Found region using legacy size. rloc=<{1},{2}>. Rname={3}",
 //                                    LogHeader, possibleX, possibleY, ret.RegionName);
+                return ret;
             }
 
-            if (ret == null)
+            // for 0.8 regions just make a BIG area request. old code whould do it plus 4 more smaller on region open edges
+            // this is what 0.9 grids now do internally
+            List<GridRegion> possibleRegions = pGridService.GetRegionRange(pScopeID,
+                        (int)(px - Constants.MaximumRegionSize), (int)(px + 1), // +1 bc left mb not part of range
+                        (int)(py - Constants.MaximumRegionSize), (int)(py + 1));
+//          m_log.DebugFormat("{0} GetRegionContainingWorldLocation: possibleRegions cnt={1}, range={2}",
+//                       LogHeader, possibleRegions.Count, range);
+            if (possibleRegions != null && possibleRegions.Count > 0)
             {
-                // If the simple lookup failed, search the larger area for a region that contains this point
-                double range = (double)pSizeHint + fudge;
-                while (ret == null && range <= (Constants.MaximumRegionSize + Constants.RegionSize))
+                // If we found some regions, check to see if the point is within
+                foreach (GridRegion gr in possibleRegions)
                 {
-                    // Get from the grid service a list of regions that might contain this point.
-                    // The region origin will be in the zero direction so only subtract the range.
-                    List<GridRegion> possibleRegions = pGridService.GetRegionRange(pScopeID,
-                                        (int)(px - range), (int)(px),
-                                        (int)(py - range), (int)(py));
-//                    m_log.DebugFormat("{0} GetRegionContainingWorldLocation: possibleRegions cnt={1}, range={2}",
-//                                        LogHeader, possibleRegions.Count, range);
-                    if (possibleRegions != null && possibleRegions.Count > 0)
-                    {
-                        // If we found some regions, check to see if the point is within
-                        foreach (GridRegion gr in possibleRegions)
-                        {
-//                           m_log.DebugFormat("{0} GetRegionContainingWorldLocation: possibleRegion nm={1}, regionLoc=<{2},{3}>, regionSize=<{4},{5}>",
-//                                                LogHeader, gr.RegionName, gr.RegionLocX, gr.RegionLocY, gr.RegionSizeX, gr.RegionSizeY);
-                            if (px >= (double)gr.RegionLocX && px < (double)(gr.RegionLocX + gr.RegionSizeX)
+//                  m_log.DebugFormat("{0} GetRegionContainingWorldLocation: possibleRegion nm={1}, regionLoc=<{2},{3}>, regionSize=<{4},{5}>",
+//                               LogHeader, gr.RegionName, gr.RegionLocX, gr.RegionLocY, gr.RegionSizeX, gr.RegionSizeY);
+                    if (px >= (double)gr.RegionLocX && px < (double)(gr.RegionLocX + gr.RegionSizeX)
                                 && py >= (double)gr.RegionLocY && py < (double)(gr.RegionLocY + gr.RegionSizeY))
-                            {
-                                // Found a region that contains the point
-                                ret = gr;
-//                                m_log.DebugFormat("{0} GetRegionContainingWorldLocation: found. RegionName={1}", LogHeader, ret.RegionName);
-                                break;
-                            }
-                        }
+                    {
+                        // Found a region that contains the point
+                        return gr;
+//                      m_log.DebugFormat("{0} GetRegionContainingWorldLocation: found. RegionName={1}", LogHeader, ret.RegionName);
                     }
-                    // Larger search area for next time around if not found
-                    range *= 2;
                 }
             }
 
-            if (ret == null)
-            {
-                // remember this location was not found so we can quickly not find it next time
-                m_notFoundLocationCache.Add(px, py);
-//                m_log.DebugFormat("{0} GetRegionContainingWorldLocation: Not found. Remembering loc=<{1},{2}>", LogHeader, px, py);
-            }
-
-            return ret;
+            // remember this location was not found so we can quickly not find it next time
+            m_notFoundLocationCache.Add(px, py);
+//          m_log.DebugFormat("{0} GetRegionContainingWorldLocation: Not found. Remembering loc=<{1},{2}>", LogHeader, px, py);
+            return null;
         }
 
         private void InformClientOfNeighbourCompleted(IAsyncResult iar)