Thank you Flyte Xevious for Mantis #3361 - Implementation of llEdgeOfWorld

2 files changed, 61 insertions, 2 deletions

diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 82babb7..722360b 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -58,6 +58,7 @@ Patches
 * Godfrey
 * Grumly57
 * Fly-Man
+* Flyte Xevious
 * jhurliman
 * jimbo2120 (IBM)
 * John R Sohn (XenReborn)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 9819ce0..3c1b87f 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -4991,8 +4991,66 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public LSL_Integer llEdgeOfWorld(LSL_Vector pos, LSL_Vector dir)
         {
             m_host.AddScriptLPS(1);
-            NotImplemented("llEdgeOfWorld");
-            return 0;
+
+            // edge will be used to pass the Region Coordinates offset
+            // we want to check for a neighboring sim
+            LSL_Vector edge = new LSL_Vector(0, 0, 0);
+            
+            if (dir.x == 0)
+            {
+                if (dir.y == 0)
+                {
+                        // Direction vector is 0,0 so return
+                        // false since we're staying in the sim
+                    return 0;
+                }
+                else
+                {
+                        // Y is the only valid direction
+                        edge.y = dir.y / Math.Abs(dir.y);
+                }
+            }
+            else
+            {
+                LSL_Float mag;
+                if (dir.x > 0)
+                {
+                    mag = (Constants.RegionSize - pos.x) / dir.x;  
+                }
+                else
+                {
+                    mag = (pos.x/dir.x);
+                }
+
+                mag = Math.Abs(mag);
+
+                edge.y = pos.y + (dir.y * mag);
+
+                if (edge.y > Constants.RegionSize || edge.y < 0)
+                {
+                        // Y goes out of bounds first
+                    edge.y = dir.y / Math.Abs(dir.y);
+                }
+                else
+                {
+                    // X goes out of bounds first or its a corner exit
+                    edge.y = 0;
+                    edge.x = dir.x / Math.Abs(dir.x);
+                }
+            }
+            
+                List<SimpleRegionInfo> neighbors = World.CommsManager.GridService.RequestNeighbours(World.RegionInfo.RegionLocX, World.RegionInfo.RegionLocY);
+            
+                uint neighborX = World.RegionInfo.RegionLocX + (uint)dir.x;
+                uint neighborY = World.RegionInfo.RegionLocY + (uint)dir.y;
+                
+                foreach (SimpleRegionInfo sri in neighbors)
+                {
+                        if (sri.RegionLocX == neighborX && sri.RegionLocY == neighborY)
+                                return 0;
+                }
+            
+                return 1;
         }
 
         /// <summary>