opensim – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections.Generic; |
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30 | using System.Reflection; |
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31 | |||
32 | using OpenSim.Framework; |
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33 | using OpenSim.Region.Framework.Scenes; |
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34 | using OpenSim.Services.Interfaces; |
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35 | using GridRegion = OpenSim.Services.Interfaces.GridRegion; |
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36 | |||
37 | using OpenMetaverse; |
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38 | using log4net; |
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39 | |||
40 | namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid |
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41 | { |
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42 | public class RegionCache |
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43 | { |
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44 | private static readonly ILog m_log = |
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45 | LogManager.GetLogger( |
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46 | MethodBase.GetCurrentMethod().DeclaringType); |
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47 | |||
48 | private Scene m_scene; |
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49 | private Dictionary<ulong, GridRegion> m_neighbours = new Dictionary<ulong, GridRegion>(); |
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50 | |||
51 | public string RegionName |
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52 | { |
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53 | get { return m_scene.RegionInfo.RegionName; } |
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54 | } |
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55 | |||
56 | public RegionCache(Scene s) |
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57 | { |
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58 | m_scene = s; |
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59 | m_scene.EventManager.OnRegionUp += OnRegionUp; |
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60 | } |
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61 | |||
62 | private void OnRegionUp(GridRegion otherRegion) |
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63 | { |
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64 | // This shouldn't happen |
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65 | if (otherRegion == null) |
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66 | return; |
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67 | |||
68 | m_log.DebugFormat("[REGION CACHE]: (on region {0}) Region {1} is up @ {2}-{3}", |
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69 | m_scene.RegionInfo.RegionName, otherRegion.RegionName, Util.WorldToRegionLoc((uint)otherRegion.RegionLocX), Util.WorldToRegionLoc((uint)otherRegion.RegionLocY)); |
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70 | |||
71 | m_neighbours[otherRegion.RegionHandle] = otherRegion; |
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72 | } |
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73 | |||
74 | public void Clear() |
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75 | { |
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76 | m_scene.EventManager.OnRegionUp -= OnRegionUp; |
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77 | m_neighbours.Clear(); |
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78 | } |
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79 | |||
80 | public List<GridRegion> GetNeighbours() |
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81 | { |
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82 | return new List<GridRegion>(m_neighbours.Values); |
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83 | } |
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84 | |||
85 | // Get a region given its base coordinates (in meters). |
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86 | // NOTE: this is NOT 'get a region by some point in the region'. The coordinate MUST |
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87 | // be the base coordinate of the region. |
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88 | // The snapping is technically unnecessary but is harmless because regions are always |
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89 | // multiples of the legacy region size (256). |
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90 | public GridRegion GetRegionByPosition(int x, int y) |
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91 | { |
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92 | uint xsnap = (uint)(x / Constants.RegionSize) * Constants.RegionSize; |
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93 | uint ysnap = (uint)(y / Constants.RegionSize) * Constants.RegionSize; |
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94 | ulong handle = Util.RegionWorldLocToHandle(xsnap, ysnap); |
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95 | |||
96 | if (m_neighbours.ContainsKey(handle)) |
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97 | return m_neighbours[handle]; |
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98 | |||
99 | return null; |
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100 | } |
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101 | } |
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102 | } |