/// <summary>
/// TryGetValue
/// </summary>
/// <param name="target">target MinValue = -3.402823E+38f</param>
/// <param name="node"></param>
/// <returns></returns>
public bool TryGetValue(float target, out AoiNode node)
{
node = null;
var cur = _header;
while (cur != null)
{
while (cur.Right != null && cur.Right.Value < target)
{
cur = cur.Right;
}
if (cur.Right != null && Math.Abs(cur.Right.Value - target) < _limit)
{
node = cur.Right;
while (node.Down != null)
{
node = node.Down;
}
return(true);
}
cur = cur.Down;
}
return(false);
}
/// <summary>
/// 更新节点
/// </summary>
/// <param name="node">Aoi节点</param>
/// <param name="area">区域距离</param>
/// <param name="x">X轴位置</param>
/// <param name="y">Y轴位置</param>
/// <returns></returns>
public AoiNode Update(AoiNode node, Vector2 area, float x, float y)
{
// 把新的AOI节点转移到旧的节点里
node.AoiInfo.MoveOnlySet = node.AoiInfo.MovesSet.Select(d => d).ToHashSet();
// 移动到新的位置
Move(node, x, y);
// 查找周围坐标
Find(node, area);
// 差集计算
node.AoiInfo.EntersSet = node.AoiInfo.MovesSet.Except(node.AoiInfo.MoveOnlySet).ToHashSet();
// 把自己添加到进入点的人
foreach (var enterNode in node.AoiInfo.EntersSet)
{
GetNode(enterNode).AoiInfo.MovesSet.Add(node.Id);
}
node.AoiInfo.LeavesSet = node.AoiInfo.MoveOnlySet.Except(node.AoiInfo.MovesSet).ToHashSet();
node.AoiInfo.MoveOnlySet = node.AoiInfo.MoveOnlySet.Except(node.AoiInfo.EntersSet)
.Except(node.AoiInfo.LeavesSet).ToHashSet();
return(node);
}
/// <summary>
/// 更新节点
/// </summary>
/// <param name="node">Aoi节点</param>
/// <param name="area">区域距离</param>
/// <param name="x">X轴位置</param>
/// <param name="y">Y轴位置</param>
/// <returns></returns>
public AoiNode UpdateNode(AoiNode node, Vector2 area, float x, float y)
{
// 把新的AOI节点转移到旧的节点里
node.AoiInfo.MoveOnlySet = node.AoiInfo.MovesSet.Select(d => d).ToHashSet();
// 移动到新的位置
Move(node, x, y);
// 查找周围坐标
FindAoi(node, area);
// 差集计算
node.AoiInfo.EntersSet = node.AoiInfo.MovesSet.Except(node.AoiInfo.MoveOnlySet).ToHashSet();
node.AoiInfo.LeavesSet = node.AoiInfo.MoveOnlySet.Except(node.AoiInfo.MovesSet).ToHashSet();
node.AoiInfo.MoveOnlySet = node.AoiInfo.MoveOnlySet.Except(node.AoiInfo.EntersSet)
.Except(node.AoiInfo.LeavesSet).ToHashSet();
return(node);
}
/// <summary>
/// Add node
/// </summary>
/// <param name="target">target MinValue = -3.402823E+38f</param>
/// <param name="entity"></param>
/// <returns></returns>
public AoiNode Add(float target, AoiEntity entity = null)
{
var rLayer = 1;
if (_header == null)
{
rLayer = _maxLayer;
var tempHeader = _header = new AoiNode(rLayer, target, entity);
for (var layer = _maxLayer - 1; layer >= 1; --layer)
{
_header = _header.Down = new AoiNode(layer, target, top: _header);
}
_header = tempHeader;
return(null);
}
while (rLayer < _maxLayer && _random.Next(2) == 0)
{
++rLayer;
}
AoiNode cur = _header, insertNode = null, lastLayerNode = null;
for (var layer = _maxLayer; layer >= 1; --layer)
{
while (cur.Right != null && cur.Right.Value < target)
{
cur = cur.Right;
}
if (layer <= rLayer)
{
insertNode = new AoiNode(layer, target, entity: entity, left: cur, right: cur.Right);
if (cur.Right != null)
{
cur.Right.Left = insertNode;
}
cur.Right = insertNode;
if (lastLayerNode != null)
{
lastLayerNode.Down = insertNode;
insertNode.Top = lastLayerNode;
}
lastLayerNode = insertNode;
}
cur = cur.Down;
}
Count++;
return(insertNode);
}
/// <summary>
/// 根据指定范围查找周围的坐标
/// </summary>
/// <param name="node">Aoi节点</param>
/// <param name="area">区域距离</param>
public AoiNode Find(AoiNode node, Vector2 area)
{
node.AoiInfo.MovesSet.Clear();
for (var i = 0; i < 2; i++)
{
var cur = i == 0 ? node.Link.XNode.Next : node.Link.XNode.Previous;
while (cur != null)
{
if (Math.Abs(Math.Abs(cur.Value.Position.X) - Math.Abs(node.Position.X)) > area.X)
{
break;
}
else if (Math.Abs(Math.Abs(cur.Value.Position.Y) - Math.Abs(node.Position.Y)) <= area.Y)
{
if (Distance(node.Position, cur.Value.Position) <= area.X)
{
if (!node.AoiInfo.MovesSet.Contains(cur.Value.Id))
{
node.AoiInfo.MovesSet.Add(cur.Value.Id);
}
}
}
cur = i == 0 ? cur.Next : cur.Previous;
}
}
for (var i = 0; i < 2; i++)
{
var cur = i == 0 ? node.Link.YNode.Next : node.Link.YNode.Previous;
while (cur != null)
{
if (Math.Abs(Math.Abs(cur.Value.Position.Y) - Math.Abs(node.Position.Y)) > area.Y)
{
break;
}
else if (Math.Abs(Math.Abs(cur.Value.Position.X) - Math.Abs(node.Position.X)) <= area.X)
{
if (Distance(node.Position, cur.Value.Position) <= area.Y)
{
if (!node.AoiInfo.MovesSet.Contains(cur.Value.Id))
{
node.AoiInfo.MovesSet.Add(cur.Value.Id);
}
}
}
cur = i == 0 ? cur.Next :cur.Previous;
}
}
return(node);
}
/// <summary>
/// Circuit Breaker
/// </summary>
/// <param name="cur"></param>
private void CircuitBreaker(AoiNode cur)
{
if (cur.Left != null)
{
cur.Left.Right = cur.Right;
}
if (cur.Right != null)
{
cur.Right.Left = cur.Left;
}
cur.Left = null;
cur.Right = null;
}
/// <summary>
/// Remove
/// </summary>
/// <param name="node"></param>
public void Remove(AoiNode node)
{
var cur = node;
while (cur != null)
{
var tmp = cur;
CircuitBreaker(tmp);
cur = cur.Top;
}
Count--;
}
public AoiNode Add(float target, AoiEntity entity)
{
var rLevel = 1;
while (rLevel <= _level && _random.Next(2) == 0)
{
++rLevel;
}
if (rLevel > _level)
{
_level = rLevel;
_header = AoiPool.Instance.Fetch <AoiNode>().Init(_level, target, entity,
null, null, null, _header);
}
AoiNode cur = _header, last = null;
for (var l = _level; l >= 1; --l)
{
while (cur.Right != null && cur.Right.Value < target)
{
cur = cur.Right;
}
if (l <= rLevel)
{
cur.Right = AoiPool.Instance.Fetch <AoiNode>().Init(l, target, entity,
cur, cur.Right, null, null);
if (last != null)
{
last.Down = cur.Right;
cur.Right.Top = last;
}
last = cur.Right;
if (l == 1)
{
cur = cur.Right;
break;
}
}
cur = cur.Down;
}
Count++;
return(cur);
}
public void Recycle()
{
if (_isRecycle)
{
return;
}
X = null;
Y = null;
Key = 0;
ViewEntity.Clear();
ViewEntityBak.Clear();
_isRecycle = true;
}
public void Recycle()
{
if (_isRecycle)
{
return;
}
X = null;
Y = null;
Key = 0;
ViewEntity.Clear();
ViewEntityBak.Clear();
_isRecycle = true;
AoiPool.Instance.Recycle(this);
}
/// <summary>
/// 新加入AOI
/// </summary>
/// <param name="id">一般是角色的ID等其他标识ID</param>
/// <param name="x">X轴位置</param>
/// <param name="y">Y轴位置</param>
/// <returns></returns>
public AoiNode Enter(long id, float x, float y)
{
if (_nodes.TryGetValue(id, out var node))
{
return(node);
}
node = new AoiNode().Init(id, x, y);
_xLinks.Insert(node);
_yLinks.Insert(node);
_nodes[node.Id] = node;
return(node);
}
public AoiNode Update(AoiNode node, Vector2 area)
{
return(Update(node, area, node.Position.X, node.Position.Y));
}
/// <summary>
/// 移动
/// </summary>
/// <param name="node">Aoi节点</param>
/// <param name="x">X轴位置</param>
/// <param name="y">Y轴位置</param>
private void Move(AoiNode node, float x, float y)
{
#region 移动X轴
if (Math.Abs(node.Position.X - x) > 0)
{
if (x > node.Position.X)
{
var cur = node.Link.XNode.Next;
while (cur != null)
{
if (x < cur.Value.Position.X)
{
_xLinks.Remove(node.Link.XNode);
node.Position.X = x;
node.Link.XNode = _xLinks.AddBefore(cur, node);
break;
}
else if (cur.Next == null)
{
_xLinks.Remove(node.Link.XNode);
node.Position.X = x;
node.Link.XNode = _xLinks.AddAfter(cur, node);
break;
}
cur = cur.Next;
}
}
else
{
var cur = node.Link.XNode.Previous;
while (cur != null)
{
if (x > cur.Value.Position.X)
{
_xLinks.Remove(node.Link.XNode);
node.Position.X = x;
node.Link.XNode = _xLinks.AddAfter(cur, node);
break;
}
else if (cur.Previous == null)
{
_xLinks.Remove(node.Link.XNode);
node.Position.X = x;
node.Link.XNode = _xLinks.AddAfter(cur, node);
break;
}
cur = cur.Previous;
}
}
}
#endregion
#region 移动Y轴
if (Math.Abs(node.Position.Y - y) > 0)
{
if (y > node.Position.Y)
{
var cur = node.Link.YNode.Next;
while (cur != null)
{
if (y < cur.Value.Position.Y)
{
_yLinks.Remove(node.Link.YNode);
node.Position.Y = y;
node.Link.YNode = _yLinks.AddBefore(cur, node);
break;
}
else if (cur.Next == null)
{
_yLinks.Remove(node.Link.YNode);
node.Position.Y = y;
node.Link.YNode = _yLinks.AddAfter(cur, node);
break;
}
cur = cur.Next;
}
}
else
{
var cur = node.Link.YNode.Previous;
while (cur != null)
{
if (y > cur.Value.Position.Y)
{
_yLinks.Remove(node.Link.YNode);
node.Position.Y = y;
node.Link.YNode = _yLinks.AddBefore(cur, node);
break;
}
else if (cur.Previous == null)
{
_yLinks.Remove(node.Link.YNode);
node.Position.Y = y;
node.Link.YNode = _yLinks.AddAfter(cur, node);
break;
}
cur = cur.Previous;
}
}
}
#endregion
node.SetPosition(x, y);
}
/// <summary>
/// Move
/// </summary>
/// <param name="node"></param>
/// <param name="target"></param>
public void Move(AoiNode node, ref float target)
{
var cur = node;
#region Left
if (target > cur.Value)
{
while (cur != null)
{
if (cur.Right != null && target > cur.Right.Value)
{
var findNode = cur;
// Find the target node to be moved to.
while (findNode.Right != null && findNode.Right.Value < target)
{
findNode = findNode.Right;
}
// Fuse the current node.
CircuitBreaker(cur);
// Move to the target node location
cur.Left = findNode;
cur.Right = findNode.Right;
if (findNode.Right != null)
{
findNode.Right.Left = cur;
}
findNode.Right = cur;
}
cur.Value = target;
cur = cur.Top;
}
return;
}
#endregion
#region Right
while (cur != null)
{
if (cur.Left != null && target < cur.Left.Value)
{
// Find the target node to be moved to.
var findNode = cur;
while (findNode.Left != null && findNode.Left.Value > target)
{
findNode = findNode.Left;
}
// Fuse the current node.
CircuitBreaker(cur);
// Move to the target node location
cur.Right = findNode;
cur.Left = findNode.Left;
if (findNode.Left != null)
{
findNode.Left.Right = cur;
}
findNode.Left = cur;
}
cur.Value = target;
cur = cur.Top;
}
#endregion
}
public void Move(ref AoiNode node, ref float target)
{
var cur = node;
#region Left
if (target > cur.Value)
{
if (cur.Right == null || target <= cur.Right.Value)
{
while (cur != null)
{
cur.Value = target;
cur = cur.Top;
}
return;
}
while (cur != null)
{
var moveCur = cur;
moveCur.Value = target;
if (cur.Left != null || cur.Right != null)
{
if (cur.Right != null)
{
cur = cur.Right;
}
if (moveCur.Right != null)
{
moveCur.Right.Left = moveCur.Left;
if (moveCur.Left != null)
{
moveCur.Left.Right = moveCur.Right;
moveCur.Left = null;
}
moveCur.Right = null;
}
while (cur.Right != null && cur.Right.Value < target)
{
cur = cur.Right;
}
moveCur.Right = cur.Right;
moveCur.Left = cur;
if (cur.Right != null)
{
cur.Right.Left = moveCur;
}
cur.Right = moveCur;
}
cur = moveCur.Top;
}
return;
}
#endregion
#region Right
if (cur.Left == null || target >= cur.Left.Value)
{
while (cur != null)
{
cur.Value = target;
cur = cur.Top;
}
return;
}
while (cur != null)
{
var moveCur = cur;
moveCur.Value = target;
if (cur.Left != null || cur.Right != null)
{
if (cur.Left != null)
{
cur = cur.Left;
}
if (moveCur.Left != null)
{
moveCur.Left.Right = moveCur.Right;
if (moveCur.Right != null)
{
moveCur.Right.Left = moveCur.Left;
moveCur.Right = null;
}
moveCur.Left = null;
}
while (cur.Left != null && cur.Left.Value > target)
{
cur = cur.Left;
}
moveCur.Left = cur.Left;
moveCur.Right = cur;
if (cur.Left != null)
{
cur.Left.Right = moveCur;
}
cur.Left = moveCur;
}
cur = moveCur.Top;
}
#endregion
}
/// <summary>
/// Move
/// </summary>
/// <param name="node"></param>
/// <param name="target"></param>
public void Move(AoiNode node, ref float target)
{
var cur = node;
#region Left
if (target > cur.Value)
{
while (cur != null)
{
if (cur.Right != null && target > cur.Right.Value)
{
var findNode = cur;
// 寻找到需要移动到的目标节点。
while (findNode.Right != null && findNode.Right.Value < target)
{
findNode = findNode.Right;
}
// 熔断当前节点。
CircuitBreaker(cur);
// 移动到目标节点位置
cur.Left = findNode;
cur.Right = findNode.Right;
if (findNode.Right != null)
{
findNode.Right.Left = cur;
}
findNode.Right = cur;
}
cur.Value = target;
cur = cur.Top;
}
return;
}
#endregion
#region Right
while (cur != null)
{
if (cur.Left != null && target < cur.Left.Value)
{
// 寻找到需要移动到的目标节点。
var findNode = cur;
while (findNode.Left != null && findNode.Left.Value > target)
{
findNode = findNode.Left;
}
// 熔断当前节点。
CircuitBreaker(cur);
// 移动到目标节点位置。
cur.Right = findNode;
cur.Left = findNode.Left;
if (findNode.Left != null)
{
findNode.Left.Right = cur;
}
findNode.Left = cur;
}
cur.Value = target;
cur = cur.Top;
}
#endregion
}