1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using Nini.Config;
using log4net;
namespace OpenSim.Region.Physics.Manager
{
/// <summary>
/// Description of MyClass.
/// </summary>
public class PhysicsPluginManager
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private Dictionary<string, IPhysicsPlugin> _PhysPlugins = new Dictionary<string, IPhysicsPlugin>();
private Dictionary<string, IMeshingPlugin> _MeshPlugins = new Dictionary<string, IMeshingPlugin>();
public PhysicsPluginManager()
{
}
public PhysicsScene GetPhysicsScene(string physEngineName, string meshEngineName, IConfigSource config)
{
if (String.IsNullOrEmpty(physEngineName))
{
return PhysicsScene.Null;
}
if (String.IsNullOrEmpty(meshEngineName))
{
return PhysicsScene.Null;
}
IMesher meshEngine = null;
if (_MeshPlugins.ContainsKey(meshEngineName))
{
m_log.Info("[PHYSICS]: creating meshing engine " + meshEngineName);
meshEngine = _MeshPlugins[meshEngineName].GetMesher();
}
else
{
m_log.WarnFormat("[PHYSICS]: couldn't find meshingEngine: {0}", meshEngineName);
throw new ArgumentException(String.Format("couldn't find meshingEngine: {0}", meshEngineName));
}
if (_PhysPlugins.ContainsKey(physEngineName))
{
m_log.Info("[PHYSICS]: creating " + physEngineName);
PhysicsScene result = _PhysPlugins[physEngineName].GetScene();
result.Initialise(meshEngine, config);
return result;
}
else
{
m_log.WarnFormat("[PHYSICS]: couldn't find physicsEngine: {0}", physEngineName);
throw new ArgumentException(String.Format("couldn't find physicsEngine: {0}", physEngineName));
}
}
public void LoadPlugins()
{
// Load "plugins", that are hard coded and not existing in form of an external lib
IMeshingPlugin plugHard;
plugHard = new ZeroMesherPlugin();
_MeshPlugins.Add(plugHard.GetName(), plugHard);
m_log.Info("[PHYSICS]: Added meshing engine: " + plugHard.GetName());
// And now walk all assemblies (DLLs effectively) and see if they are home
// of a plugin that is of interest for us
string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Physics");
string[] pluginFiles = Directory.GetFiles(path, "*.dll");
for (int i = 0; i < pluginFiles.Length; i++)
{
AddPlugin(pluginFiles[i]);
}
}
private void AddPlugin(string FileName)
{
// TODO / NOTE
// The assembly named 'OpenSim.Region.Physics.BasicPhysicsPlugin' was loaded from
// 'file:///C:/OpenSim/trunk2/bin/Physics/OpenSim.Region.Physics.BasicPhysicsPlugin.dll'
// using the LoadFrom context. The use of this context can result in unexpected behavior
// for serialization, casting and dependency resolution. In almost all cases, it is recommended
// that the LoadFrom context be avoided. This can be done by installing assemblies in the
// Global Assembly Cache or in the ApplicationBase directory and using Assembly.
// Load when explicitly loading assemblies.
Assembly pluginAssembly = null;
Type[] types = null;
try
{
pluginAssembly = Assembly.LoadFrom(FileName);
}
catch (Exception ex)
{
m_log.Error("Failed to load plugin from " + FileName, ex);
}
if (pluginAssembly != null)
{
try
{
types = pluginAssembly.GetTypes();
}
catch (ReflectionTypeLoadException ex)
{
m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + FileName + ": " +
ex.LoaderExceptions[0].Message, ex);
}
catch (Exception ex)
{
m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + FileName, ex);
}
if (types != null)
{
foreach (Type pluginType in types)
{
if (pluginType.IsPublic)
{
if (!pluginType.IsAbstract)
{
Type physTypeInterface = pluginType.GetInterface("IPhysicsPlugin", true);
if (physTypeInterface != null)
{
IPhysicsPlugin plug =
(IPhysicsPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
plug.Init();
if (!_PhysPlugins.ContainsKey(plug.GetName()))
{
_PhysPlugins.Add(plug.GetName(), plug);
m_log.Info("[PHYSICS]: Added physics engine: " + plug.GetName());
}
}
Type meshTypeInterface = pluginType.GetInterface("IMeshingPlugin", true);
if (meshTypeInterface != null)
{
IMeshingPlugin plug =
(IMeshingPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
if (!_MeshPlugins.ContainsKey(plug.GetName()))
{
_MeshPlugins.Add(plug.GetName(), plug);
m_log.Info("[PHYSICS]: Added meshing engine: " + plug.GetName());
}
}
physTypeInterface = null;
meshTypeInterface = null;
}
}
}
}
}
pluginAssembly = null;
}
//---
public static void PhysicsPluginMessage(string message, bool isWarning)
{
if (isWarning)
{
m_log.Warn("[PHYSICS]: " + message);
}
else
{
m_log.Info("[PHYSICS]: " + message);
}
}
//---
}
public interface IPhysicsPlugin
{
bool Init();
PhysicsScene GetScene();
string GetName();
void Dispose();
}
public interface IMeshingPlugin
{
string GetName();
IMesher GetMesher();
}
}
|
