protected void CheckForBorderCrossing()
{
if (IsChildAgent)
return;
Vector3 pos2 = AbsolutePosition;
Vector3 vel = Velocity;
int neighbor = 0;
int[] fix = new int[2];
float timeStep = 0.1f;
pos2.X = pos2.X + (vel.X*timeStep);
pos2.Y = pos2.Y + (vel.Y*timeStep);
pos2.Z = pos2.Z + (vel.Z*timeStep);
if (!IsInTransit)
{
// Checks if where it's headed exists a region
bool needsTransit = false;
if (m_scene.TestBorderCross(pos2, Cardinals.W))
{
if (m_scene.TestBorderCross(pos2, Cardinals.S))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.SW, ref fix);
}
else if (m_scene.TestBorderCross(pos2, Cardinals.N))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.NW, ref fix);
}
else
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.W, ref fix);
}
}
else if (m_scene.TestBorderCross(pos2, Cardinals.E))
{
if (m_scene.TestBorderCross(pos2, Cardinals.S))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.SE, ref fix);
}
else if (m_scene.TestBorderCross(pos2, Cardinals.N))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.NE, ref fix);
}
else
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.E, ref fix);
}
}
else if (m_scene.TestBorderCross(pos2, Cardinals.S))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.S, ref fix);
}
else if (m_scene.TestBorderCross(pos2, Cardinals.N))
{
needsTransit = true;
neighbor = HaveNeighbor(Cardinals.N, ref fix);
}
// Makes sure avatar does not end up outside region
if (neighbor <= 0)
{
if (!needsTransit)
{
if (m_requestedSitTargetUUID == UUID.Zero)
{
Vector3 pos = AbsolutePosition;
if (AbsolutePosition.X < 0)
pos.X += Velocity.X;
else if (AbsolutePosition.X > Constants.RegionSize)
pos.X -= Velocity.X;
if (AbsolutePosition.Y < 0)
pos.Y += Velocity.Y;
else if (AbsolutePosition.Y > Constants.RegionSize)
pos.Y -= Velocity.Y;
AbsolutePosition = pos;
}
}
}
else if (neighbor > 0)
CrossToNewRegion();
}
else
{
RemoveFromPhysicalScene();
// This constant has been inferred from experimentation
// I'm not sure what this value should be, so I tried a few values.
timeStep = 0.04f;
pos2 = AbsolutePosition;
pos2.X = pos2.X + (vel.X * timeStep);
pos2.Y = pos2.Y + (vel.Y * timeStep);
pos2.Z = pos2.Z + (vel.Z * timeStep);
m_pos = pos2;
}
}
