ogb912/opensim
1
0
Fork 0
mirror of https://github.com/opensim/opensim.git synced 2026-08-08 18:25:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

- parcel blocking, region crossing blocking, teleport blocking

Browse Source 
Signed-off-by: Melanie <melanie@t-data.com>
This commit is contained in:
unknown
2010-03-08 01:19:45 -06:00
committed by Melanie
parent c135235000
commit 98f91a252c
12 changed files with 333 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

230
OpenSim/Region/Framework/Scenes/Scene.cs
View File

@@ -27,6 +27,7 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
@@ -3224,6 +3225,7 @@ namespace OpenSim.Region.Framework.Scenes
/// also return a reason.</returns>
public bool NewUserConnection(AgentCircuitData agent, uint teleportFlags, out string reason)
{
TeleportFlags tp = (TeleportFlags)teleportFlags;
//Teleport flags:
//
// TeleportFlags.ViaGodlikeLure - Border Crossing
@@ -3257,6 +3259,17 @@ namespace OpenSim.Region.Framework.Scenes
CapsModule.NewUserConnection(agent);
ILandObject land = LandChannel.GetLandObject(agent.startpos.X, agent.startpos.Y);
//On login or border crossing test land permisions
if (tp != TeleportFlags.Default)
{
if (land != null && !TestLandRestrictions(agent, land, out reason))
{
return false;
}
}
ScenePresence sp = m_sceneGraph.GetScenePresence(agent.AgentID);
if (sp != null)
{
@@ -3329,7 +3342,6 @@ namespace OpenSim.Region.Framework.Scenes
}
}
// Honor parcel landing type and position.
ILandObject land = LandChannel.GetLandObject(agent.startpos.X, agent.startpos.Y);
if (land != null)
{
if (land.LandData.LandingType == (byte)1 && land.LandData.UserLocation != Vector3.Zero)
@@ -3345,6 +3357,40 @@ namespace OpenSim.Region.Framework.Scenes
return true;
}
private bool TestLandRestrictions(AgentCircuitData agent, ILandObject land, out string reason)
{
bool banned = land.IsBannedFromLand(agent.AgentID);
bool restricted = land.IsRestrictedFromLand(agent.AgentID);
if (banned || restricted)
{
ILandObject nearestParcel = GetNearestAllowedParcel(agent.AgentID, agent.startpos.X, agent.startpos.Y);
if (nearestParcel != null)
{
//Move agent to nearest allowed
Vector3 newPosition = GetParcelCenterAtGround(nearestParcel);
agent.startpos.X = newPosition.X;
agent.startpos.Y = newPosition.Y;
}
else
{
if (banned)
{
reason = "Cannot regioncross into banned parcel.";
}
else
{
reason = String.Format("Denied access to private region {0}: You are not on the access list for that region.",
RegionInfo.RegionName);
}
return false;
}
}
reason = "";
return true;
}
/// <summary>
/// Verifies that the user has a presence on the Grid
/// </summary>
@@ -3476,6 +3522,18 @@ namespace OpenSim.Region.Framework.Scenes
return true;
}
private ILandObject GetParcelAtPoint(float x, float y)
{
foreach (var parcel in AllParcels())
{
if( parcel.ContainsPoint((int)x,(int)y))
{
return parcel;
}
}
return null;
}
/// <summary>
/// Update an AgentCircuitData object with new information
/// </summary>
@@ -4748,5 +4806,175 @@ namespace OpenSim.Region.Framework.Scenes
{
get { return m_allowScriptCrossings; }
}
public Vector3? GetNearestAllowedPosition(ScenePresence avatar)
{
//simulate to make sure we have pretty up to date positions
PhysicsScene.Simulate(0);
ILandObject nearestParcel = GetNearestAllowedParcel(avatar.UUID, avatar.AbsolutePosition.X, avatar.AbsolutePosition.Y);
if (nearestParcel != null)
{
Vector3 dir = Vector3.Normalize(Vector3.Multiply(avatar.Velocity, -1));
//Try to get a location that feels like where they came from
Vector3? nearestPoint = GetNearestPointInParcelAlongDirectionFromPoint(avatar.AbsolutePosition, dir, nearestParcel);
if (nearestPoint != null)
{
Debug.WriteLine("Found a sane previous position based on velocity, sending them to: " + nearestPoint.ToString());
return nearestPoint.Value;
}
//Sometimes velocity might be zero (local teleport), so try finding point along path from avatar to center of nearest parcel
Vector3 directionToParcelCenter = Vector3.Subtract(GetParcelCenterAtGround(nearestParcel), avatar.AbsolutePosition);
dir = Vector3.Normalize(directionToParcelCenter);
nearestPoint = GetNearestPointInParcelAlongDirectionFromPoint(avatar.AbsolutePosition, dir, nearestParcel);
if (nearestPoint != null)
{
Debug.WriteLine("They had a zero velocity, sending them to: " + nearestPoint.ToString());
return nearestPoint.Value;
}
//Ultimate backup if we have no idea where they are
Debug.WriteLine("Have no idea where they are, sending them to: " + avatar.lastKnownAllowedPosition.ToString());
return avatar.lastKnownAllowedPosition;
}
//Go to the edge, this happens in teleporting to a region with no available parcels
Vector3 nearestRegionEdgePoint = GetNearestRegionEdgePosition(avatar);
//Debug.WriteLine("They are really in a place they don't belong, sending them to: " + nearestRegionEdgePoint.ToString());
return nearestRegionEdgePoint;
return null;
}
private Vector3 GetParcelCenterAtGround(ILandObject parcel)
{
Vector2 center = GetParcelCenter(parcel);
return GetPositionAtGround(center.X, center.Y);
}
private Vector3? GetNearestPointInParcelAlongDirectionFromPoint(Vector3 pos, Vector3 direction, ILandObject parcel)
{
Vector3 unitDirection = Vector3.Normalize(direction);
//Making distance to search go through some sane limit of distance
for (float distance = 0; distance < Constants.RegionSize * 2; distance += .5f)
{
Vector3 testPos = Vector3.Add(pos, Vector3.Multiply(unitDirection, distance));
if (parcel.ContainsPoint((int)testPos.X, (int)testPos.Y))
{
return testPos;
}
}
return null;
}
public ILandObject GetNearestAllowedParcel(UUID avatarId, float x, float y)
{
List<ILandObject> all = AllParcels();
float minParcelDistance = float.MaxValue;
ILandObject nearestParcel = null;
foreach (var parcel in all)
{
if (!parcel.IsEitherBannedOrRestricted(avatarId))
{
float parcelDistance = GetParcelDistancefromPoint(parcel, x, y);
if (parcelDistance < minParcelDistance)
{
minParcelDistance = parcelDistance;
nearestParcel = parcel;
}
}
}
return nearestParcel;
}
private List<ILandObject> AllParcels()
{
return LandChannel.AllParcels();
}
private float GetParcelDistancefromPoint(ILandObject parcel, float x, float y)
{
return Vector2.Distance(new Vector2(x, y), GetParcelCenter(parcel));
}
//calculate the average center point of a parcel
private Vector2 GetParcelCenter(ILandObject parcel)
{
int count = 0;
int avgx = 0;
int avgy = 0;
for (int x = 0; x < Constants.RegionSize; x++)
{
for (int y = 0; y < Constants.RegionSize; y++)
{
//Just keep a running average as we check if all the points are inside or not
if (parcel.ContainsPoint(x, y))
{
if (count == 0)
{
avgx = x;
avgy = y;
}
else
{
avgx = (avgx * count + x) / (count + 1);
avgy = (avgy * count + y) / (count + 1);
}
count += 1;
}
}
}
return new Vector2(avgx, avgy);
}
private Vector3 GetNearestRegionEdgePosition(ScenePresence avatar)
{
float xdistance = avatar.AbsolutePosition.X < Constants.RegionSize / 2 ? avatar.AbsolutePosition.X : Constants.RegionSize - avatar.AbsolutePosition.X;
float ydistance = avatar.AbsolutePosition.Y < Constants.RegionSize / 2 ? avatar.AbsolutePosition.Y : Constants.RegionSize - avatar.AbsolutePosition.Y;
//find out what vertical edge to go to
if (xdistance < ydistance)
{
if (avatar.AbsolutePosition.X < Constants.RegionSize / 2)
{
return GetPositionAtAvatarHeightOrGroundHeight(avatar, 0.0f, avatar.AbsolutePosition.Y);
}
else
{
return GetPositionAtAvatarHeightOrGroundHeight(avatar, Constants.RegionSize, avatar.AbsolutePosition.Y);
}
}
//find out what horizontal edge to go to
else
{
if (avatar.AbsolutePosition.Y < Constants.RegionSize / 2)
{
return GetPositionAtAvatarHeightOrGroundHeight(avatar, avatar.AbsolutePosition.X, 0.0f);
}
else
{
return GetPositionAtAvatarHeightOrGroundHeight(avatar, avatar.AbsolutePosition.X, Constants.RegionSize);
}
}
}
private Vector3 GetPositionAtAvatarHeightOrGroundHeight(ScenePresence avatar, float x, float y)
{
Vector3 ground = GetPositionAtGround(x, y);
if( avatar.AbsolutePosition.Z > ground.Z)
{
ground.Z = avatar.AbsolutePosition.Z;
}
return ground;
}
private Vector3 GetPositionAtGround(float x, float y)
{
return new Vector3(x, y, GetGroundHeight(x, y));
}
}
}