/// <summary>
/// A visualization method called in OnDrawGizmos - only used for debugging.
/// </summary>
public void DebugRender()
{
if (_grid == null)
{
return;
}
Vector3 extraHeight = new Vector3(0f, 0.01f, 0f);
foreach (var c in _cellDirsSet)
{
Vector3 pos = c.Key + extraHeight;
VectorFieldCell fieldCell = c.Value;
if (fieldCell.pathPortalIndex == -1)
{
Gizmos.color = Color.white;
}
else
{
Gizmos.color = Color.blue;
}
Gizmos.DrawSphere(pos, 0.25f);
Vector3 fieldCellDirection = fieldCell.direction.normalized;
Gizmos.DrawLine(pos, pos + fieldCellDirection);
}
}
private void SmoothFields()
{
// loop through all the cells that have been fast marched...
foreach (var pair in _fastMarchedCellsSet)
{
Vector3 pos = pair.Key;
var cell = _grid.GetCell(pos);
int smoothVectors = 1;
Vector3 smoothVector = pair.Value;
// get all cell neighbours, if there are no unwalkable (or missing neighbours, if built-in containment is true)
bool noUnwalkables = GetCellNeighboursAndUnwalkability(cell, _tempWalkableNeighbours, !_allowDiagonals);
if (noUnwalkables)
{
// visit all the neighbours and smooth out using their directions
int walkableNeighboursCount = _tempWalkableNeighbours.count;
for (int i = 0; i < walkableNeighboursCount; i++)
{
var neighbour = _tempWalkableNeighbours[i];
Vector3 neighbourPos = neighbour.position;
Vector3 dir = GetFastMarchedCellAtPos(neighbourPos);
if (dir.sqrMagnitude == 0f)
{
// if the neighbour has not been visited, then ignore it
continue;
}
smoothVectors++;
smoothVector += dir;
}
smoothVector /= smoothVectors;
}
// set the vector field cell direction
_cellDirsSet[pos] = new VectorFieldCell(smoothVector);
}
}
private void SmoothFields()
{
// iterate over all fast marched cells - this uses an enumerator and thus allocates a small amount of memory
foreach (var pair in _fastMarchedCellsSet)
{
Vector3 pos = pair.Key;
var cell = GetCellAtPos(pos);
int smoothVectors = 1;
PlaneVector smoothVector = pair.Value;
// get all cell neighbours, if there are no unwalkable (or missing neighbours, if built-in containment is true)
bool noUnwalkables = GetCellNeighboursAndUnwalkability(cell, _tempWalkableNeighbours, !_allowDiagonals);
if (noUnwalkables)
{
int walkableNeighboursCount = _tempWalkableNeighbours.count;
for (int i = 0; i < walkableNeighboursCount; i++)
{
var neighbour = _tempWalkableNeighbours[i];
Vector3 neighbourPos = neighbour.position;
PlaneVector dir = GetFastMarchedCellAtPos(neighbourPos);
if (dir.sqrMagnitude == 0f)
{
// if the neighbour has not been fast marched, then ignore it
continue;
}
smoothVectors++;
smoothVector += dir;
}
smoothVector /= smoothVectors;
}
// set the vector field cell direction
_cellDirsSet[pos] = new VectorFieldCell(smoothVector);
}
}
private void HandlePortals()
{
// loop through all nodes in the path, except the first and last - as they can never be portals
int pathCount = _currentPath.count - 1;
for (int i = 1; i < pathCount; i++)
{
var node = _currentPath[i] as PortalCell;
if (node == null)
{
// if the node is not a portal cell, then ignore it
continue;
}
// find all the portal neighbour nodes
int neighbourCount = node.neighbourNodes.Length;
for (int j = 0; j < neighbourCount; j++)
{
var neighbour = node.neighbourNodes[j];
Vector3 neighbourPos = neighbour.position;
if (!_groupBounds.Contains(neighbourPos))
{
// ignore portal neighbour nodes that lie outside of the group bounds area
continue;
}
// all portal neighbour nodes within the group bounds point to the same index in the path, the index where the portal is
VectorFieldCell fieldCell;
if (_cellDirsSet.TryGetValue(neighbourPos, out fieldCell))
{
// ignore nodes not in the vector field
_cellDirsSet[neighbourPos] = new VectorFieldCell(fieldCell.direction, i);
}
}
}
}
private void HandlePortals()
{
// loop through all nodes in the path, except the first and last - as they can never be portals
int pathCount = _currentPath.count - 1;
for (int i = 1; i < pathCount; i++)
{
var node = _currentPath[i] as PortalCell;
if (node == null)
{
// if the node is not a portal cell, then ignore it
continue;
}
// find all the portal neighbour nodes
int neighbourCount = node.neighbourNodes.Length;
for (int j = 0; j < neighbourCount; j++)
{
var neighbour = node.neighbourNodes[j];
Vector3 neighbourPos = neighbour.position;
if (!_groupBounds.Contains(neighbourPos))
{
// ignore portal neighbour nodes that lie outside of the group bounds area
continue;
}
// all portal neighbour nodes within the group bounds point to the same index in the path, the index where the portal is
VectorFieldCell fieldCell;
if (_cellDirsSet.TryGetValue(neighbourPos, out fieldCell))
{
// ignore nodes not in the vector field
_cellDirsSet[neighbourPos] = new VectorFieldCell(fieldCell.direction, i);
}
}
}
}
private void SmoothFields()
{
// iterate over all fast marched cells - this uses an enumerator and thus allocates a small amount of memory
foreach (var pair in _fastMarchedCellsSet)
{
Vector3 pos = pair.Key;
var cell = _grid.GetCell(pos);
int smoothVectors = 1;
PlaneVector smoothVector = pair.Value;
// get all cell neighbours, if there are no unwalkable (or missing neighbours, if built-in containment is true)
bool noUnwalkables = GetCellNeighboursAndUnwalkability(cell, _tempWalkableNeighbours, !_allowDiagonals);
if (noUnwalkables)
{
int walkableNeighboursCount = _tempWalkableNeighbours.count;
for (int i = 0; i < walkableNeighboursCount; i++)
{
var neighbour = _tempWalkableNeighbours[i];
Vector3 neighbourPos = neighbour.position;
PlaneVector dir = GetFastMarchedCellAtPos(neighbourPos);
if (dir.sqrMagnitude == 0f)
{
// if the neighbour has not been fast marched, then ignore it
continue;
}
smoothVectors++;
smoothVector += dir;
}
smoothVector /= smoothVectors;
}
// set the vector field cell direction
_cellDirsSet[pos] = new VectorFieldCell(smoothVector);
}
}
private void SmoothFields()
{
// loop through all the cells that have been fast marched...
foreach (var pair in _fastMarchedCellsSet)
{
Vector3 pos = pair.Key;
var cell = _grid.GetCell(pos);
int smoothVectors = 1;
Vector3 smoothVector = pair.Value;
// get all cell neighbours, if there are no unwalkable (or missing neighbours, if built-in containment is true)
bool noUnwalkables = GetCellNeighboursAndUnwalkability(cell, _tempWalkableNeighbours, !_allowDiagonals);
if (noUnwalkables)
{
// visit all the neighbours and smooth out using their directions
int walkableNeighboursCount = _tempWalkableNeighbours.count;
for (int i = 0; i < walkableNeighboursCount; i++)
{
var neighbour = _tempWalkableNeighbours[i];
Vector3 neighbourPos = neighbour.position;
Vector3 dir = GetFastMarchedCellAtPos(neighbourPos);
if (dir.sqrMagnitude == 0f)
{
// if the neighbour has not been visited, then ignore it
continue;
}
smoothVectors++;
smoothVector += dir;
}
smoothVector /= smoothVectors;
}
// set the vector field cell direction
_cellDirsSet[pos] = new VectorFieldCell(smoothVector);
}
}