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authorJustin Clark-Casey (justincc)2014-05-20 23:48:10 +0100
committerJustin Clark-Casey (justincc)2014-05-20 23:52:07 +0100
commit9479f647781184d39d174fd708650da1e847c18c (patch)
tree3faee1543e1c1614efc3034f802ee45093014688 /OpenSim/Region/Framework/Scenes
parentOn verbose groups messaging logging, count all operations in reported time wh... (diff)
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Fix issue where avatar and script chat could sometimes be heard from anywhere in neighbouring regions.
This was due to a silent uint overflow in ScenePresence.UpdateChildAgent() corrupting child agent positions when the child agent was in a region with a greater x or y map co-ord than the root agent region Probably introduced in beeec1c. This still will not function properly with very high region map co-ords (in the millions) but other parts of the code don't handle this properly anyway. Looks to address http://opensimulator.org/mantis/view.php?id=7163
Diffstat (limited to 'OpenSim/Region/Framework/Scenes')
-rw-r--r--OpenSim/Region/Framework/Scenes/ScenePresence.cs11
1 files changed, 8 insertions, 3 deletions
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index dd4bbe9..28b5b46 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -3777,10 +3777,15 @@ namespace OpenSim.Region.Framework.Scenes
3777 if (!IsChildAgent) 3777 if (!IsChildAgent)
3778 return; 3778 return;
3779 3779
3780 //m_log.Debug(" >>> ChildAgentPositionUpdate <<< " + rRegionX + "-" + rRegionY); 3780// m_log.DebugFormat(
3781// "[SCENE PRESENCE]: ChildAgentPositionUpdate for {0} in {1}, tRegion {2},{3}, rRegion {4},{5}, pos {6}",
3782// Name, Scene.Name, tRegionX, tRegionY, rRegionX, rRegionY, cAgentData.Position);
3783
3781 // Find the distance (in meters) between the two regions 3784 // Find the distance (in meters) between the two regions
3782 uint shiftx = Util.RegionToWorldLoc(rRegionX - tRegionX); 3785 // XXX: We cannot use Util.RegionLocToHandle() here because a negative value will silently overflow the
3783 uint shifty = Util.RegionToWorldLoc(rRegionY - tRegionY); 3786 // uint
3787 int shiftx = (int)(((int)rRegionX - (int)tRegionX) * Constants.RegionSize);
3788 int shifty = (int)(((int)rRegionY - (int)tRegionY) * Constants.RegionSize);
3784 3789
3785 Vector3 offset = new Vector3(shiftx, shifty, 0f); 3790 Vector3 offset = new Vector3(shiftx, shifty, 0f);
3786 3791