From 7137b1349850030171509d0096b8cf9283fadf86 Mon Sep 17 00:00:00 2001
From: Teravus Ovares <teravus@gmail.com>
Date: Fri, 6 Jun 2008 13:24:40 +0000
Subject: [PATCH] * This limits avatar to the heightfield height if they
 teleport or cross a border to a position below it.  After teleporting, you
 can go under the terrain if you like as usual.

---
 OpenSim/Region/Environment/Scenes/ScenePresence.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/OpenSim/Region/Environment/Scenes/ScenePresence.cs b/OpenSim/Region/Environment/Scenes/ScenePresence.cs
index aca0f9dd9a..2215850e5d 100644
--- a/OpenSim/Region/Environment/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Environment/Scenes/ScenePresence.cs
@@ -592,7 +592,12 @@ namespace OpenSim.Region.Environment.Scenes
 //                 Name, UUID, m_scene.RegionInfo.RegionName);
 
             m_isChildAgent = false;
-
+            float posZLimit = (float)m_scene.GetLandHeight((int)pos.X, (int)pos.Y);
+            float newPosZ = posZLimit + m_avHeight;
+            if (posZLimit >= (pos.Z -(m_avHeight/2)) && !(Single.IsInfinity(newPosZ) && Single.IsNaN(newPosZ)))
+            {
+                pos.Z = newPosZ;
+            }
             AbsolutePosition = pos;
 
             AddToPhysicalScene();