public static void Add(this AOIManagerComponent self, AOIEntity aoiEntity, float x, float y)
{
int cellX = (int)(x * 1000) / AOIManagerComponent.CellSize;
int cellY = (int)(y * 1000) / AOIManagerComponent.CellSize;
if (aoiEntity.ViewDistance == 0)
{
aoiEntity.ViewDistance = 1;
}
AOIHelper.CalcEnterAndLeaveCell(aoiEntity, cellX, cellY, aoiEntity.SubEnterCells, aoiEntity.SubLeaveCells);
// 遍历EnterCell
foreach (long cellId in aoiEntity.SubEnterCells)
{
Cell cell = self.GetCell(cellId);
aoiEntity.SubEnter(cell);
}
// 遍历LeaveCell
foreach (long cellId in aoiEntity.SubLeaveCells)
{
Cell cell = self.GetCell(cellId);
aoiEntity.SubLeave(cell);
}
// 自己加入的Cell
Cell selfCell = self.GetCell(AOIHelper.CreateCellId(cellX, cellY));
aoiEntity.Cell = selfCell;
selfCell.Add(aoiEntity);
// 通知订阅该Cell Enter的Unit
foreach (KeyValuePair <long, AOIEntity> kv in selfCell.SubsEnterEntities)
{
kv.Value.EnterSight(aoiEntity);
}
}
public static void Move(this AOIManagerComponent self, AOIEntity aoiEntity, int cellX, int cellY)
{
long newCellId = AOIHelper.CreateCellId(cellX, cellY);
if (aoiEntity.Cell.Id == newCellId) // cell没有变化
{
return;
}
// 自己加入新的Cell
Cell newCell = self.GetCell(newCellId);
Move(aoiEntity, newCell, aoiEntity.Cell);
AOIHelper.CalcEnterAndLeaveCell(aoiEntity, cellX, cellY, aoiEntity.enterHashSet, aoiEntity.leaveHashSet);
// 算出自己leave新Cell
foreach (long cellId in aoiEntity.leaveHashSet)
{
if (aoiEntity.SubLeaveCells.Contains(cellId))
{
continue;
}
Cell cell = self.GetCell(cellId);
aoiEntity.SubLeave(cell);
}
// 算出需要通知离开的Cell
aoiEntity.SubLeaveCells.ExceptWith(aoiEntity.leaveHashSet);
foreach (long cellId in aoiEntity.SubLeaveCells)
{
Cell cell = self.GetCell(cellId);
aoiEntity.UnSubLeave(cell);
}
// 这里交换两个HashSet,提高性能
ObjectHelper.Swap(ref aoiEntity.SubLeaveCells, ref aoiEntity.leaveHashSet);
// 算出自己看到的新Cell
foreach (long cellId in aoiEntity.enterHashSet)
{
if (aoiEntity.SubEnterCells.Contains(cellId))
{
continue;
}
Cell cell = self.GetCell(cellId);
aoiEntity.SubEnter(cell);
}
// 离开的Enter
aoiEntity.SubEnterCells.ExceptWith(aoiEntity.enterHashSet);
foreach (long cellId in aoiEntity.SubEnterCells)
{
Cell cell = self.GetCell(cellId);
aoiEntity.UnSubEnter(cell);
}
// 这里交换两个HashSet,提高性能
ObjectHelper.Swap(ref aoiEntity.SubEnterCells, ref aoiEntity.enterHashSet);
}