aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/Environment/Scenes/SceneCommunicationService.cs
blob: 9bd55e18112a3afb379ae4c02f663d122cde08a7 (plain)
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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
using System;
using System.Collections.Generic;
using System.Net;
using System.Text;
using libsecondlife;
using OpenSim.Framework;
using OpenSim.Framework.Console;
using OpenSim.Framework.Communications;


namespace OpenSim.Region.Environment.Scenes
{
    public class SceneCommunicationService //one instance per region
    {
        protected CommunicationsManager m_commsProvider;
        protected RegionInfo m_regionInfo;

        protected RegionCommsListener regionCommsHost;

        public event AgentCrossing OnAvatarCrossingIntoRegion;
        public event ExpectUserDelegate OnExpectUser;
        public event CloseAgentConnection OnCloseAgentConnection;

        public SceneCommunicationService(CommunicationsManager commsMan)
        {
            m_commsProvider = commsMan;
        }

        public void RegisterRegion(RegionInfo regionInfos)
        {
            m_regionInfo = regionInfos;
            regionCommsHost = m_commsProvider.GridService.RegisterRegion(m_regionInfo);
            if (regionCommsHost != null)
            {
                regionCommsHost.OnExpectUser += NewUserConnection;
                regionCommsHost.OnAvatarCrossingIntoRegion += AgentCrossing;
                regionCommsHost.OnCloseAgentConnection += CloseConnection;
            }
        }

        public void Close()
        {
            regionCommsHost.OnExpectUser -= NewUserConnection;
            regionCommsHost.OnAvatarCrossingIntoRegion -= AgentCrossing;
            regionCommsHost.OnCloseAgentConnection -= CloseConnection;
            //regionCommsHost.RemoveRegion(m_regionInfo); //TODO add to method to commsManager
            regionCommsHost = null;
        }

        #region CommsManager Event handlers
        /// <summary>
        /// 
        /// </summary>
        /// <param name="regionHandle"></param>
        /// <param name="agent"></param>
        protected void NewUserConnection(ulong regionHandle, AgentCircuitData agent)
        {
            if (OnExpectUser != null)
            {
                OnExpectUser(regionHandle, agent);
            }
        }

        protected void AgentCrossing(ulong regionHandle, LLUUID agentID, LLVector3 position, bool isFlying)
        {
            if (OnAvatarCrossingIntoRegion != null)
            {
                OnAvatarCrossingIntoRegion(regionHandle, agentID, position, isFlying);
            }
        }

        protected void CloseConnection(ulong regionHandle, LLUUID agentID)
        {
            if (OnCloseAgentConnection != null)
            {
                OnCloseAgentConnection(regionHandle, agentID);
            }
        }
        #endregion

        #region Inform Client of Neighbours
        private delegate void InformClientOfNeighbourDelegate(
            ScenePresence avatar, AgentCircuitData a, ulong regionHandle, IPEndPoint endPoint);

        private void InformClientOfNeighbourCompleted(IAsyncResult iar)
        {
            InformClientOfNeighbourDelegate icon = (InformClientOfNeighbourDelegate)iar.AsyncState;
            icon.EndInvoke(iar);
        }

        /// <summary>
        /// Async compnent for informing client of which neighbours exists
        /// </summary>
        /// <remarks>
        /// This needs to run asynchronesously, as a network timeout may block the thread for a long while
        /// </remarks>
        /// <param name="remoteClient"></param>
        /// <param name="a"></param>
        /// <param name="regionHandle"></param>
        /// <param name="endPoint"></param>
        private void InformClientOfNeighbourAsync(ScenePresence avatar, AgentCircuitData a, ulong regionHandle,
                                                  IPEndPoint endPoint)
        {
            MainLog.Instance.Notice("INTERGRID", "Starting to inform client about neighbours");
            bool regionAccepted = m_commsProvider.InterRegion.InformRegionOfChildAgent(regionHandle, a);

            if (regionAccepted)
            {
                avatar.ControllingClient.InformClientOfNeighbour(regionHandle, endPoint);
                avatar.AddNeighbourRegion(regionHandle);
                MainLog.Instance.Notice("INTERGRID", "Completed inform client about neighbours");
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public void EnableNeighbourChildAgents(ScenePresence avatar)
        {
            List<SimpleRegionInfo> neighbours =
                m_commsProvider.GridService.RequestNeighbours(m_regionInfo.RegionLocX, m_regionInfo.RegionLocY);
            if (neighbours != null)
            {
                for (int i = 0; i < neighbours.Count; i++)
                {
                    AgentCircuitData agent = avatar.ControllingClient.RequestClientInfo();
                    agent.BaseFolder = LLUUID.Zero;
                    agent.InventoryFolder = LLUUID.Zero;
                    agent.startpos = new LLVector3(128, 128, 70);
                    agent.child = true;

                    InformClientOfNeighbourDelegate d = InformClientOfNeighbourAsync;
                    d.BeginInvoke(avatar, agent, neighbours[i].RegionHandle, neighbours[i].ExternalEndPoint,
                                  InformClientOfNeighbourCompleted,
                                  d);
                }
            }
        }
        #endregion

        /// <summary>
        /// 
        /// </summary>
        /// <param name="regionHandle"></param>
        /// <returns></returns>
        public virtual RegionInfo RequestNeighbouringRegionInfo(ulong regionHandle)
        {
            return m_commsProvider.GridService.RequestNeighbourInfo(regionHandle);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="minX"></param>
        /// <param name="minY"></param>
        /// <param name="maxX"></param>
        /// <param name="maxY"></param>
        public virtual void RequestMapBlocks(IClientAPI remoteClient, int minX, int minY, int maxX, int maxY)
        {
            List<MapBlockData> mapBlocks;
            mapBlocks = m_commsProvider.GridService.RequestNeighbourMapBlocks(minX, minY, maxX, maxY);
            remoteClient.SendMapBlock(mapBlocks);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="remoteClient"></param>
        /// <param name="RegionHandle"></param>
        /// <param name="position"></param>
        /// <param name="lookAt"></param>
        /// <param name="flags"></param>
        public virtual void RequestTeleportToLocation(ScenePresence avatar, ulong regionHandle, LLVector3 position,
                                            LLVector3 lookAt, uint flags)
        {
            if (regionHandle == m_regionInfo.RegionHandle)
            {

                avatar.ControllingClient.SendTeleportLocationStart();
                avatar.ControllingClient.SendLocalTeleport(position, lookAt, flags);
                avatar.Teleport(position);

            }
            else
            {
                RegionInfo reg = RequestNeighbouringRegionInfo(regionHandle);
                if (reg != null)
                {
                    avatar.ControllingClient.SendTeleportLocationStart();
                    AgentCircuitData agent = avatar.ControllingClient.RequestClientInfo();
                    agent.BaseFolder = LLUUID.Zero;
                    agent.InventoryFolder = LLUUID.Zero;
                    agent.startpos = position;
                    agent.child = true;
                    avatar.Close();
                    m_commsProvider.InterRegion.InformRegionOfChildAgent(regionHandle, agent);
                    m_commsProvider.InterRegion.ExpectAvatarCrossing(regionHandle, avatar.ControllingClient.AgentId, position, false);
                    AgentCircuitData circuitdata = avatar.ControllingClient.RequestClientInfo();
                    string capsPath = Util.GetCapsURL(avatar.ControllingClient.AgentId);
                    avatar.ControllingClient.SendRegionTeleport(regionHandle, 13, reg.ExternalEndPoint, 4, (1 << 4), capsPath);
                    avatar.MakeChildAgent();
                    uint newRegionX = (uint)(regionHandle >> 40);
                    uint newRegionY = (((uint)(regionHandle)) >> 8);
                    uint oldRegionX = (uint)(m_regionInfo.RegionHandle >> 40);
                    uint oldRegionY = (((uint)(m_regionInfo.RegionHandle)) >> 8);
                    if (Util.fast_distance2d((int)(newRegionX - oldRegionX), (int)(newRegionY - oldRegionY)) > 3)
                    {
                        CloseChildAgentConnections(avatar);
                    }
                }
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="regionhandle"></param>
        /// <param name="agentID"></param>
        /// <param name="position"></param>
        public bool CrossToNeighbouringRegion(ulong regionhandle, LLUUID agentID, LLVector3 position, bool isFlying)
        {
            return m_commsProvider.InterRegion.ExpectAvatarCrossing(regionhandle, agentID, position, isFlying);
        }

        public void CloseChildAgentConnections(ScenePresence presence)
        {
            foreach (ulong regionHandle in presence.KnownChildRegions)
            {
                
                m_commsProvider.InterRegion.TellRegionToCloseChildConnection(regionHandle, presence.ControllingClient.AgentId);
                presence.RemoveNeighbourRegion(regionHandle);
            }
        }
    }
}