// this is needed for non-convex parcels (example: rectangular parcel, and in the exact center
// another, smaller rectangular parcel). Both will have the same initial coordinates.
private void findPointInParcel(ILandObject land, ref uint refX, ref uint refY)
{
m_log.DebugFormat("[DATASNAPSHOT] trying {0}, {1}", refX, refY);
// the point we started with already is in the parcel
if (land.ContainsPoint((int)refX, (int)refY))
{
return;
}
// ... otherwise, we have to search for a point within the parcel
uint startX = (uint)land.LandData.AABBMin.X;
uint startY = (uint)land.LandData.AABBMin.Y;
uint endX = (uint)land.LandData.AABBMax.X;
uint endY = (uint)land.LandData.AABBMax.Y;
// default: center of the parcel
refX = (startX + endX) / 2;
refY = (startY + endY) / 2;
// If the center point is within the parcel, take that one
if (land.ContainsPoint((int)refX, (int)refY))
{
return;
}
// otherwise, go the long way.
for (uint y = startY; y <= endY; ++y)
{
for (uint x = startX; x <= endX; ++x)
{
if (land.ContainsPoint((int)x, (int)y))
{
// found a point
refX = x;
refY = y;
return;
}
}
}
}
//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? 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;
}
// this is needed for non-convex parcels (example: rectangular parcel, and in the exact center
// another, smaller rectangular parcel). Both will have the same initial coordinates.
private void findPointInParcel(ILandObject land, ref uint refX, ref uint refY)
{
m_log.DebugFormat("[DATASNAPSHOT] trying {0}, {1}", refX, refY);
// the point we started with already is in the parcel
if (land.ContainsPoint((int)refX, (int)refY)) return;
// ... otherwise, we have to search for a point within the parcel
uint startX = (uint)land.LandData.AABBMin.X;
uint startY = (uint)land.LandData.AABBMin.Y;
uint endX = (uint)land.LandData.AABBMax.X;
uint endY = (uint)land.LandData.AABBMax.Y;
// default: center of the parcel
refX = (startX + endX) / 2;
refY = (startY + endY) / 2;
// If the center point is within the parcel, take that one
if (land.ContainsPoint((int)refX, (int)refY)) return;
// otherwise, go the long way.
for (uint y = startY; y <= endY; ++y)
{
for (uint x = startX; x <= endX; ++x)
{
if (land.ContainsPoint((int)x, (int)y))
{
// found a point
refX = x;
refY = y;
return;
}
}
}
}
//calculate the average center point of a parcel
private Vector2 GetParcelCenter(ILandObject parcel)
{
int count = 0;
float avgx = 0;
float avgy = 0;
for (int x = 0; x < m_scene.RegionInfo.RegionSizeX; x++)
{
for (int y = 0; y < m_scene.RegionInfo.RegionSizeY; 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)
{
//Set this to 1 so that when we multiply down below, it doesn't lock to 0
if (x == 0)
x = 1;
if (y == 0)
y = 1;
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? GetNearestPointInParcelAlongDirectionFromPoint(Vector3 pos, Vector3 direction,
ILandObject parcel)
{
Vector3 unitDirection = Vector3.Normalize(direction);
//Making distance to search go through some sane limit of distance
int size = m_scene.RegionInfo.RegionSizeX > m_scene.RegionInfo.RegionSizeY
? m_scene.RegionInfo.RegionSizeX
: m_scene.RegionInfo.RegionSizeY;
for (float distance = 0; distance < size*2; distance += .5f)
{
Vector3 testPos = Vector3.Add(pos, Vector3.Multiply(unitDirection, distance));
if (parcel.ContainsPoint((int) testPos.X, (int) testPos.Y))
{
return GetPositionAtGround(testPos.X, testPos.Y);
}
}
return null;
}
// checks and enforces bans or restrictions
// returns true if enforced
public bool EnforceBans(ILandObject land, ScenePresence avatar)
{
Vector3 agentpos = avatar.AbsolutePosition;
float h = m_scene.GetGroundHeight(agentpos.X, agentpos.Y) + LandChannel.BAN_LINE_SAFETY_HEIGHT;
float zdif = avatar.AbsolutePosition.Z - h;
if (zdif > 0 )
{
forcedPosition.Remove(avatar.UUID);
avatar.lastKnownAllowedPosition = agentpos;
return false;
}
bool ban = false;
string reason = "";
if (land.IsRestrictedFromLand(avatar.UUID))
{
reason = "You do not have access to the parcel";
ban = true;
}
if (land.IsBannedFromLand(avatar.UUID))
{
if ( m_allowedForcefulBans)
{
reason ="You are banned from parcel";
ban = true;
}
else if(!ban)
{
if (forcedPosition.Contains(avatar.UUID))
avatar.ControllingClient.SendAlertMessage("You are banned from parcel, please leave by your own will");
forcedPosition.Remove(avatar.UUID);
avatar.lastKnownAllowedPosition = agentpos;
return false;
}
}
if(ban)
{
if (!forcedPosition.Contains(avatar.UUID))
avatar.ControllingClient.SendAlertMessage(reason);
if(zdif > -4f)
{
agentpos.Z = h + 4.0f;
ForceAvatarToPosition(avatar, agentpos);
return true;
}
if (land.ContainsPoint((int)avatar.lastKnownAllowedPosition.X,
(int) avatar.lastKnownAllowedPosition.Y))
{
Vector3? pos = m_scene.GetNearestAllowedPosition(avatar);
if (pos == null)
{
forcedPosition.Remove(avatar.UUID);
m_scene.TeleportClientHome(avatar.UUID, avatar.ControllingClient);
}
else
ForceAvatarToPosition(avatar, (Vector3)pos);
}
else
{
ForceAvatarToPosition(avatar, avatar.lastKnownAllowedPosition);
}
return true;
}
else
{
forcedPosition.Remove(avatar.UUID);
avatar.lastKnownAllowedPosition = agentpos;
return false;
}
}
public void EnforceBans(ILandObject land, ScenePresence avatar)
{
if (avatar.AbsolutePosition.Z > LandChannel.BAN_LINE_SAFETY_HIEGHT)
return;
if (land.IsEitherBannedOrRestricted(avatar.UUID))
{
if (land.ContainsPoint(Convert.ToInt32(avatar.lastKnownAllowedPosition.X), Convert.ToInt32(avatar.lastKnownAllowedPosition.Y)))
{
Vector3? pos = m_scene.GetNearestAllowedPosition(avatar);
if (pos == null)
m_scene.TeleportClientHome(avatar.UUID, avatar.ControllingClient);
else
ForceAvatarToPosition(avatar, (Vector3)pos);
}
else
{
ForceAvatarToPosition(avatar, avatar.lastKnownAllowedPosition);
}
}
}
