RegionCache.cs 3.6 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.Collections.Generic;
  29. using System.Reflection;
  30. using OpenSim.Framework;
  31. using OpenSim.Region.Framework.Scenes;
  32. using OpenSim.Services.Interfaces;
  33. using GridRegion = OpenSim.Services.Interfaces.GridRegion;
  34. using OpenMetaverse;
  35. using log4net;
  36. namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
  37. {
  38. public class RegionCache
  39. {
  40. private static readonly ILog m_log =
  41. LogManager.GetLogger(
  42. MethodBase.GetCurrentMethod().DeclaringType);
  43. private Scene m_scene;
  44. private Dictionary<ulong, GridRegion> m_neighbours = new Dictionary<ulong, GridRegion>();
  45. public string RegionName
  46. {
  47. get { return m_scene.RegionInfo.RegionName; }
  48. }
  49. public RegionCache(Scene s)
  50. {
  51. m_scene = s;
  52. m_scene.EventManager.OnRegionUp += OnRegionUp;
  53. }
  54. private void OnRegionUp(GridRegion otherRegion)
  55. {
  56. // This shouldn't happen
  57. if (otherRegion == null)
  58. return;
  59. m_log.DebugFormat("[REGION CACHE]: (on region {0}) Region {1} is up @ {2}-{3}",
  60. m_scene.RegionInfo.RegionName, otherRegion.RegionName, otherRegion.RegionLocX, otherRegion.RegionLocY);
  61. m_neighbours[otherRegion.RegionHandle] = otherRegion;
  62. }
  63. public void Clear()
  64. {
  65. m_scene.EventManager.OnRegionUp -= OnRegionUp;
  66. m_neighbours.Clear();
  67. }
  68. public List<GridRegion> GetNeighbours()
  69. {
  70. return new List<GridRegion>(m_neighbours.Values);
  71. }
  72. public GridRegion GetRegionByPosition(int x, int y)
  73. {
  74. uint xsnap = (uint)(x / Constants.RegionSize) * Constants.RegionSize;
  75. uint ysnap = (uint)(y / Constants.RegionSize) * Constants.RegionSize;
  76. ulong handle = Utils.UIntsToLong(xsnap, ysnap);
  77. if (m_neighbours.ContainsKey(handle))
  78. return m_neighbours[handle];
  79. return null;
  80. }
  81. }
  82. }