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.IO; |
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31 | using System.Reflection; |
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32 | using Nini.Config; |
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33 | using log4net; |
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34 | using OpenSim.Framework; |
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35 | using OpenMetaverse; |
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36 | |||
37 | namespace OpenSim.Region.Physics.Manager |
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38 | { |
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39 | /// <summary> |
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40 | /// Description of MyClass. |
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41 | /// </summary> |
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42 | public class PhysicsPluginManager |
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43 | { |
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44 | private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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45 | |||
46 | private Dictionary<string, IPhysicsPlugin> _PhysPlugins = new Dictionary<string, IPhysicsPlugin>(); |
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47 | private Dictionary<string, IMeshingPlugin> _MeshPlugins = new Dictionary<string, IMeshingPlugin>(); |
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48 | |||
49 | /// <summary> |
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50 | /// Constructor. |
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51 | /// </summary> |
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52 | public PhysicsPluginManager() |
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53 | { |
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54 | // Load "plugins", that are hard coded and not existing in form of an external lib, and hence always |
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55 | // available |
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56 | IMeshingPlugin plugHard; |
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57 | plugHard = new ZeroMesherPlugin(); |
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58 | _MeshPlugins.Add(plugHard.GetName(), plugHard); |
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59 | |||
60 | m_log.Info("[PHYSICS]: Added meshing engine: " + plugHard.GetName()); |
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61 | } |
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62 | |||
63 | /// <summary> |
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64 | /// Get a physics scene for the given physics engine and mesher. |
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65 | /// </summary> |
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66 | /// <param name="physEngineName"></param> |
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67 | /// <param name="meshEngineName"></param> |
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68 | /// <param name="config"></param> |
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69 | /// <returns></returns> |
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70 | public PhysicsScene GetPhysicsScene(string physEngineName, string meshEngineName, |
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71 | IConfigSource config, string regionName, Vector3 regionExtent) |
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72 | { |
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73 | if (String.IsNullOrEmpty(physEngineName)) |
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74 | { |
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75 | return PhysicsScene.Null; |
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76 | } |
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77 | |||
78 | if (String.IsNullOrEmpty(meshEngineName)) |
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79 | { |
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80 | return PhysicsScene.Null; |
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81 | } |
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82 | |||
83 | IMesher meshEngine = null; |
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84 | if (_MeshPlugins.ContainsKey(meshEngineName)) |
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85 | { |
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86 | m_log.Info("[PHYSICS]: creating meshing engine " + meshEngineName); |
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87 | meshEngine = _MeshPlugins[meshEngineName].GetMesher(config); |
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88 | } |
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89 | else |
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90 | { |
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91 | m_log.WarnFormat("[PHYSICS]: couldn't find meshingEngine: {0}", meshEngineName); |
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92 | throw new ArgumentException(String.Format("couldn't find meshingEngine: {0}", meshEngineName)); |
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93 | } |
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94 | |||
95 | if (_PhysPlugins.ContainsKey(physEngineName)) |
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96 | { |
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97 | m_log.Info("[PHYSICS]: creating " + physEngineName); |
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98 | PhysicsScene result = _PhysPlugins[physEngineName].GetScene(regionName); |
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99 | result.Initialise(meshEngine, config, regionExtent); |
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100 | return result; |
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101 | } |
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102 | else |
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103 | { |
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104 | m_log.WarnFormat("[PHYSICS]: couldn't find physicsEngine: {0}", physEngineName); |
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105 | throw new ArgumentException(String.Format("couldn't find physicsEngine: {0}", physEngineName)); |
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106 | } |
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107 | } |
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108 | |||
109 | /// <summary> |
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110 | /// Load all plugins in assemblies at the given path |
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111 | /// </summary> |
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112 | /// <param name="pluginsPath"></param> |
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113 | public void LoadPluginsFromAssemblies(string assembliesPath) |
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114 | { |
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115 | // Walk all assemblies (DLLs effectively) and see if they are home |
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116 | // of a plugin that is of interest for us |
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117 | string[] pluginFiles = Directory.GetFiles(assembliesPath, "*.dll"); |
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118 | |||
119 | for (int i = 0; i < pluginFiles.Length; i++) |
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120 | { |
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121 | LoadPluginsFromAssembly(pluginFiles[i]); |
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122 | } |
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123 | } |
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124 | |||
125 | /// <summary> |
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126 | /// Load plugins from an assembly at the given path |
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127 | /// </summary> |
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128 | /// <param name="assemblyPath"></param> |
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129 | public void LoadPluginsFromAssembly(string assemblyPath) |
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130 | { |
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131 | // TODO / NOTE |
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132 | // The assembly named 'OpenSim.Region.Physics.BasicPhysicsPlugin' was loaded from |
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133 | // 'file:///C:/OpenSim/trunk2/bin/Physics/OpenSim.Region.Physics.BasicPhysicsPlugin.dll' |
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134 | // using the LoadFrom context. The use of this context can result in unexpected behavior |
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135 | // for serialization, casting and dependency resolution. In almost all cases, it is recommended |
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136 | // that the LoadFrom context be avoided. This can be done by installing assemblies in the |
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137 | // Global Assembly Cache or in the ApplicationBase directory and using Assembly. |
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138 | // Load when explicitly loading assemblies. |
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139 | Assembly pluginAssembly = null; |
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140 | Type[] types = null; |
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141 | |||
142 | try |
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143 | { |
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144 | pluginAssembly = Assembly.LoadFrom(assemblyPath); |
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145 | } |
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146 | catch (Exception ex) |
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147 | { |
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148 | m_log.Error("[PHYSICS]: Failed to load plugin from " + assemblyPath, ex); |
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149 | } |
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150 | |||
151 | if (pluginAssembly != null) |
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152 | { |
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153 | try |
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154 | { |
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155 | types = pluginAssembly.GetTypes(); |
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156 | } |
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157 | catch (ReflectionTypeLoadException ex) |
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158 | { |
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159 | m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + assemblyPath + ": " + |
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160 | ex.LoaderExceptions[0].Message, ex); |
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161 | } |
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162 | catch (Exception ex) |
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163 | { |
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164 | m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + assemblyPath, ex); |
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165 | } |
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166 | |||
167 | if (types != null) |
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168 | { |
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169 | foreach (Type pluginType in types) |
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170 | { |
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171 | if (pluginType.IsPublic) |
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172 | { |
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173 | if (!pluginType.IsAbstract) |
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174 | { |
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175 | Type physTypeInterface = pluginType.GetInterface("IPhysicsPlugin", true); |
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176 | |||
177 | if (physTypeInterface != null) |
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178 | { |
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179 | IPhysicsPlugin plug = |
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180 | (IPhysicsPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString())); |
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181 | plug.Init(); |
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182 | if (!_PhysPlugins.ContainsKey(plug.GetName())) |
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183 | { |
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184 | _PhysPlugins.Add(plug.GetName(), plug); |
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185 | m_log.Info("[PHYSICS]: Added physics engine: " + plug.GetName()); |
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186 | } |
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187 | } |
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188 | |||
189 | Type meshTypeInterface = pluginType.GetInterface("IMeshingPlugin", true); |
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190 | |||
191 | if (meshTypeInterface != null) |
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192 | { |
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193 | IMeshingPlugin plug = |
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194 | (IMeshingPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString())); |
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195 | if (!_MeshPlugins.ContainsKey(plug.GetName())) |
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196 | { |
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197 | _MeshPlugins.Add(plug.GetName(), plug); |
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198 | m_log.Info("[PHYSICS]: Added meshing engine: " + plug.GetName()); |
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199 | } |
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200 | } |
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201 | |||
202 | physTypeInterface = null; |
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203 | meshTypeInterface = null; |
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204 | } |
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205 | } |
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206 | } |
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207 | } |
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208 | } |
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209 | |||
210 | pluginAssembly = null; |
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211 | } |
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212 | |||
213 | //--- |
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214 | public static void PhysicsPluginMessage(string message, bool isWarning) |
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215 | { |
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216 | if (isWarning) |
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217 | { |
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218 | m_log.Warn("[PHYSICS]: " + message); |
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219 | } |
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220 | else |
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221 | { |
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222 | m_log.Info("[PHYSICS]: " + message); |
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223 | } |
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224 | } |
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225 | |||
226 | //--- |
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227 | } |
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228 | |||
229 | public interface IPhysicsPlugin |
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230 | { |
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231 | bool Init(); |
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232 | PhysicsScene GetScene(String sceneIdentifier); |
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233 | string GetName(); |
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234 | void Dispose(); |
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235 | } |
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236 | |||
237 | public interface IMeshingPlugin |
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238 | { |
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239 | string GetName(); |
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240 | IMesher GetMesher(IConfigSource config); |
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241 | } |
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242 | } |