/// <summary>Gets a leaf node from a given point.</summary>
/// <param name="pt">the point to retrieve the parent node from</param>
/// <returns>the node which contains the given point; null if the point is invalid</returns>
internal ZoneSpacePartitionNode GetLeafFromPoint(ref Vector3 pt)
{
if (IsLeaf)
{
if (m_bounds.Contains(ref pt))
{
return(this);
}
return(null);
}
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Contains(ref pt))
{
return(child.GetLeafFromPoint(ref pt));
}
}
}
return(null);
}
/// <summary>Iterates over all objects in this Node.</summary>
/// <param name="predicate">Returns whether to continue iteration.</param>
/// <returns>Whether Iteration was not cancelled (usually indicating that we did not find what we were looking for).</returns>
internal bool Iterate(ref BoundingSphere sphere, Func <WorldObject, bool> predicate, uint phase)
{
if (IsLeaf)
{
if (HasObjects)
{
foreach (WorldObject worldObject in m_objects.Values)
{
Vector3 position = worldObject.Position;
if (sphere.Contains(ref position) && worldObject.IsInPhase(phase) && !predicate(worldObject))
{
return(false);
}
}
}
}
else
{
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Intersects(ref sphere).HasAnyFlag(IntersectionType.Touches) &&
!child.Iterate(ref sphere, predicate, phase))
{
return(false);
}
}
}
}
return(true);
}
/// <summary>Adds an object to the node.</summary>
/// <param name="obj">the object to add</param>
/// <returns>whether or not the object was added successfully</returns>
internal bool AddObject(WorldObject obj)
{
if (IsLeaf)
{
if (m_objects.ContainsKey(obj.EntityId))
{
throw new ArgumentException(string.Format(
"Tried to add Object \"{0}\" with duplicate EntityId {1} to Map.", obj,
obj.EntityId));
}
m_objects.Add(obj.EntityId, obj);
obj.Node = this;
return(true);
}
Vector3 position = obj.Position;
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Contains(ref position))
{
return(child.AddObject(obj));
}
}
}
return(false);
}
/// <summary>
/// Partitions the node, dividing it into subnodes until the desired depth is reached.
/// </summary>
/// <param name="maxLevels">the maximum depth to partition</param>
/// <param name="startingDepth">the depth to start partitioning from</param>
internal void PartitionSpace(ZoneSpacePartitionNode parent, int maxLevels, int startingDepth)
{
float num1 = Length / 2f;
float num2 = Width / 2f;
if (startingDepth < maxLevels && num1 > (double)MinNodeLength &&
num2 > (double)MinNodeLength)
{
m_children = new ZoneSpacePartitionNode[2, 2];
m_children[1, 0] = new ZoneSpacePartitionNode(new BoundingBox(
new Vector3(m_bounds.Min.X, m_bounds.Min.Y, m_bounds.Min.Z),
new Vector3(m_bounds.Min.X + num1, m_bounds.Min.Y + num2, m_bounds.Max.Z)));
m_children[0, 0] = new ZoneSpacePartitionNode(new BoundingBox(
new Vector3(m_bounds.Min.X, m_bounds.Min.Y + num2, m_bounds.Min.Z),
new Vector3(m_bounds.Min.X + num1, m_bounds.Max.Y, m_bounds.Max.Z)));
m_children[1, 1] = new ZoneSpacePartitionNode(new BoundingBox(
new Vector3(m_bounds.Min.X + num1, m_bounds.Min.Y, m_bounds.Min.Z),
new Vector3(m_bounds.Max.X, m_bounds.Min.Y + num2, m_bounds.Max.Z)));
m_children[0, 1] = new ZoneSpacePartitionNode(new BoundingBox(
new Vector3(m_bounds.Min.X + num1, m_bounds.Min.Y + num2, m_bounds.Min.Z),
new Vector3(m_bounds.Max.X, m_bounds.Max.Y, m_bounds.Max.Z)));
++startingDepth;
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
m_children[index1, index2].PartitionSpace(this, maxLevels, startingDepth);
}
}
}
else
{
m_objects = new Dictionary <EntityId, WorldObject>(0);
}
}
/// <summary>
/// Partitions the node, dividing it into subnodes until the desired depth is reached.
/// </summary>
/// <param name="maxLevels">the maximum depth to partition</param>
/// <param name="startingDepth">the depth to start partitioning from</param>
internal void PartitionSpace(ZoneSpacePartitionNode parent, int maxLevels, int startingDepth)
{
var width = Length / Two;
var height = Width / Two;
if (startingDepth < maxLevels && width > MinNodeLength && height > MinNodeLength)
{
m_children = new ZoneSpacePartitionNode[Two, Two];
// Bottom left
m_children[SOUTH, WEST] =
new ZoneSpacePartitionNode(
new BoundingBox(new Vector3(m_bounds.Min.X, m_bounds.Min.Y, m_bounds.Min.Z),
new Vector3(m_bounds.Min.X + width, m_bounds.Min.Y + height, m_bounds.Max.Z)));
// Top left
m_children[NORTH, WEST] =
new ZoneSpacePartitionNode(
new BoundingBox(new Vector3(m_bounds.Min.X, m_bounds.Min.Y + height, m_bounds.Min.Z),
new Vector3(m_bounds.Min.X + width, m_bounds.Max.Y, m_bounds.Max.Z)));
// Bottom right
m_children[SOUTH, EAST] =
new ZoneSpacePartitionNode(
new BoundingBox(new Vector3(m_bounds.Min.X + width, m_bounds.Min.Y, m_bounds.Min.Z),
new Vector3(m_bounds.Max.X, m_bounds.Min.Y + height, m_bounds.Max.Z)));
// Top right
m_children[NORTH, EAST] =
new ZoneSpacePartitionNode(
new BoundingBox(new Vector3(m_bounds.Min.X + width, m_bounds.Min.Y + height, m_bounds.Min.Z),
new Vector3(m_bounds.Max.X, m_bounds.Max.Y, m_bounds.Max.Z)));
// Set the next level's depth
startingDepth++;
// Partition any further depths
for (var i0 = 0; i0 < Two; i0++)
{
for (var i1 = 0; i1 < Two; i1++)
{
var node = m_children[i0, i1];
node.PartitionSpace(this, maxLevels, startingDepth);
}
}
}
else
{
m_objects = new Dictionary <EntityId, WorldObject>(0);
}
}
//private static Dictionary<int, ZoneSpacePartitionNode[,]> m_raster = new Dictionary<int, ZoneSpacePartitionNode[,]>();
// private static Dictionary<int, ZoneSpacePartitionNode[,]> m_raster = new Dictionary<int, ZoneSpacePartitionNode[,]>();
///// <summary>
///// Partitions the node, dividing it into subnodes until the desired depth is reached.
///// </summary>
///// <param name="maxLevels">the maximum depth to partition</param>
///// <param name="startingDepth">the depth to start partitioning from</param>
//internal void PartitionSpace(int maxLevels, int startingDepth, int nodeY, int nodeX, int nodesCountAtCurrentDepth)
//{
// float incX = Length / 2;
// float incY = Width / 2;
// if (!m_raster.ContainsKey(startingDepth))
// {
// m_raster.Add(startingDepth, new ZoneSpacePartitionNode[nodesCountAtCurrentDepth, nodesCountAtCurrentDepth]);
// }
// if (m_raster[startingDepth][nodeY, nodeX] != null)
// {
// throw new Exception();
// }
// m_raster[startingDepth][nodeY, nodeX] = this;
// if (startingDepth < maxLevels)
// {
// m_children = new ZoneSpacePartitionNode[2, 2];
// // Bottom left
// m_children[SOUTH, WEST] =
// new ZoneSpacePartitionNode(
// new BoundingBox(new Vector3(m_bounds.Min.X, m_bounds.Min.Y, m_bounds.Min.Z),
// new Vector3(m_bounds.Min.X + incX, m_bounds.Min.Y + incY, m_bounds.Max.Z)));
// // Top left
// m_children[NORTH, WEST] =
// new ZoneSpacePartitionNode(
// new BoundingBox(new Vector3(m_bounds.Min.X, m_bounds.Min.Y + incY, m_bounds.Min.Z),
// new Vector3(m_bounds.Min.X + incX, m_bounds.Max.Y, m_bounds.Max.Z)));
// // Bottom right
// m_children[SOUTH, EAST] =
// new ZoneSpacePartitionNode(
// new BoundingBox(new Vector3(m_bounds.Min.X + incX, m_bounds.Min.Y, m_bounds.Min.Z),
// new Vector3(m_bounds.Max.X, m_bounds.Min.Y + incY, m_bounds.Max.Z)));
// // Top right
// m_children[NORTH, EAST] =
// new ZoneSpacePartitionNode(
// new BoundingBox(new Vector3(m_bounds.Min.X + incX, m_bounds.Min.Y + incY, m_bounds.Min.Z),
// new Vector3(m_bounds.Max.X, m_bounds.Max.Y, m_bounds.Max.Z)));
// // Set the next level's depth
// startingDepth++;
// int newNodesCount = nodesCountAtCurrentDepth * 2;
// m_children[SOUTH, WEST].PartitionSpace(maxLevels, startingDepth, nodeY * 2 + SOUTH, nodeX * 2 + WEST, newNodesCount);
// m_children[NORTH, WEST].PartitionSpace(maxLevels, startingDepth, nodeY * 2 + NORTH, nodeX * 2 + WEST, newNodesCount);
// m_children[SOUTH, EAST].PartitionSpace(maxLevels, startingDepth, nodeY * 2 + SOUTH, nodeX * 2 + EAST, newNodesCount);
// m_children[NORTH, EAST].PartitionSpace(maxLevels, startingDepth, nodeY * 2 + NORTH, nodeX * 2 + EAST, newNodesCount);
// //// Partition any further depths
// //foreach (var node in m_children)
// //{
// // node.PartitionSpace(maxLevels, startingDepth, nodesCountAtCurrentDepth * 2);
// //}
// //FindNeighbors(parent, 0, 0);
// }
// else
// {
// m_objects = new Dictionary<EntityId, WorldObject>();
// }
//}
///// <summary>
///// Partitions the space of the zone.
///// </summary>
//public void PartitionSpace()
//{
// // Start partitioning the map space
// m_root.PartitionSpace(ZoneSpacePartitionNode.DefaultPartitionThreshold, 0, 0, 0, 1);
//}
/// <summary>
/// TODO: Find all intermediate neighbors
/// </summary>
/// <param name="parent"></param>
/// <param name="vertical"></param>
/// <param name="horizontal"></param>
internal void FindNeighbors(ZoneSpacePartitionNode parent, int vertical, int horizontal)
{
//m_neighbors = new ZoneSpacePartitionNode[3, 3];
//if (parent != null)
//{
// if (vertical == NORTH)
// {
// if (horizontal == EAST)
// {
// m_neighbors[VER_CENTER, HOR_WEST] = parent.m_children[NORTH, WEST];
// m_neighbors[VER_CENTER, HOR_WEST] = parent.m_children[NORTH, WEST];
// }
// }
//}
}
/// <summary>Gets all objects within a specified radius.</summary>
/// <typeparam name="T">the minimum type of the objects to retrieve</typeparam>
/// <param name="sphere">the area to search</param>
/// <param name="entities">the list to append retrieved objects to</param>
internal void GetEntitiesInArea <T>(ref BoundingSphere sphere, List <T> entities, Func <T, bool> filter,
uint phase, ref int limitCounter) where T : WorldObject
{
if (IsLeaf)
{
if (!HasObjects)
{
return;
}
foreach (WorldObject worldObject in m_objects.Values)
{
Vector3 position = worldObject.Position;
if (sphere.Contains(ref position) && worldObject.IsInPhase(phase) && worldObject is T)
{
T obj = worldObject as T;
if (filter(obj))
{
entities.Add(obj);
if (--limitCounter == 0)
{
break;
}
}
}
}
}
else
{
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Intersects(ref sphere).HasAnyFlag(IntersectionType.Touches))
{
child.GetEntitiesInArea(ref sphere, entities, filter, phase, ref limitCounter);
}
}
}
}
}
/// <summary>Removes an object from the node.</summary>
/// <param name="obj">the object to remove</param>
/// <returns>whether or not the object was removed successfully</returns>
internal bool RemoveObject(WorldObject obj)
{
if (IsLeaf)
{
return(m_objects.Remove(obj.EntityId));
}
Vector3 position = obj.Position;
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Contains(ref position))
{
return(child.RemoveObject(obj));
}
}
}
return(false);
}
/// <summary>Gets all objects within a specified radius.</summary>
/// <param name="box">the area to search</param>
/// <param name="entities">the list to append retrieved objects to</param>
/// <param name="filter">the type (in respect to the WoW client) that the object must be</param>
internal void GetEntitiesInArea(ref BoundingBox box, List <WorldObject> entities, ObjectTypes filter, uint phase,
ref int limitCounter)
{
if (IsLeaf)
{
if (!HasObjects)
{
return;
}
foreach (WorldObject worldObject in m_objects.Values)
{
Vector3 position = worldObject.Position;
if (box.Contains(ref position) && worldObject.IsInPhase(phase) &&
worldObject.Type.HasAnyFlag(filter))
{
entities.Add(worldObject);
if (--limitCounter == 0)
{
break;
}
}
}
}
else
{
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Intersects(ref box).HasAnyFlag(IntersectionType.Touches))
{
child.GetEntitiesInArea(ref box, entities, filter, phase, ref limitCounter);
}
}
}
}
}
/// <summary>Gets all objects within a specified radius.</summary>
/// <typeparam name="T">the specific type of the objects to retrieve</typeparam>
/// <param name="entities">the list to append retrieved objects to</param>
internal void GetObjectsOfSpecificType <T>(ref BoundingBox box, List <T> entities, uint phase,
ref int limitCounter) where T : WorldObject
{
if (IsLeaf)
{
if (!HasObjects)
{
return;
}
foreach (WorldObject worldObject in m_objects.Values)
{
Vector3 position = worldObject.Position;
if (box.Contains(ref position) && worldObject.IsInPhase(phase) &&
worldObject.GetType() == typeof(T))
{
entities.Add(worldObject as T);
if (--limitCounter == 0)
{
break;
}
}
}
}
else
{
for (int index1 = 0; index1 < 2; ++index1)
{
for (int index2 = 0; index2 < 2; ++index2)
{
ZoneSpacePartitionNode child = m_children[index1, index2];
if (child.Bounds.Intersects(ref box).HasAnyFlag(IntersectionType.Touches))
{
child.GetObjectsOfSpecificType(ref box, entities, phase, ref limitCounter);
}
}
}
}
}
/// <summary>TODO: Find all intermediate neighbors</summary>
/// <param name="parent"></param>
/// <param name="vertical"></param>
/// <param name="horizontal"></param>
internal void FindNeighbors(ZoneSpacePartitionNode parent, int vertical, int horizontal)
{
}