refactor: begin to move attachments code into a region module

OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs

@@ -0,0 +1,141 @@
+/*
+ * 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 OpenSimulator 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.Reflection;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Region.CoreModules.Avatar.Attachments
+{        
+    public class AttachmentsModule : IAttachmentsModule, IRegionModule
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
+        protected Scene m_scene = null;
+
+        public void Initialise(Scene scene, IConfigSource source)
+        {
+            scene.RegisterModuleInterface<IAttachmentsModule>(this);
+            m_scene = scene;
+        }
+
+        public void PostInitialise()
+        {
+        }
+
+        public void Close()
+        {
+        }
+
+        public string Name
+        {
+            get { return "Attachments Module"; }
+        }
+
+        public bool IsSharedModule
+        {
+            get { return false; }
+        }
+
+        public bool AttachObject(
+            IClientAPI remoteClient, uint objectLocalID, uint AttachmentPt, Quaternion rot, Vector3 attachPos, bool silent)
+        {
+            SceneObjectGroup group = m_scene.GetGroupByPrim(objectLocalID);
+            if (group != null)
+            {
+                if (m_scene.Permissions.CanTakeObject(group.UUID, remoteClient.AgentId))
+                {
+                    // If the attachment point isn't the same as the one previously used
+                    // set it's offset position = 0 so that it appears on the attachment point
+                    // and not in a weird location somewhere unknown.
+                    if (AttachmentPt != 0 && AttachmentPt != (uint)group.GetAttachmentPoint())
+                    {
+                        attachPos = Vector3.Zero;
+                    }
+
+                    // AttachmentPt 0 means the client chose to 'wear' the attachment.
+                    if (AttachmentPt == 0)
+                    {
+                        // Check object for stored attachment point
+                        AttachmentPt = (uint)group.GetAttachmentPoint();
+                    }
+
+                    // if we still didn't find a suitable attachment point.......
+                    if (AttachmentPt == 0)
+                    {
+                        // Stick it on left hand with Zero Offset from the attachment point.
+                        AttachmentPt = (uint)AttachmentPoint.LeftHand;
+                        attachPos = Vector3.Zero;
+                    }
+
+                    group.SetAttachmentPoint((byte)AttachmentPt);
+                    group.AbsolutePosition = attachPos;
+
+                    // Saves and gets itemID
+                    UUID itemId;
+
+                    if (group.GetFromItemID() == UUID.Zero)
+                    {
+                        m_scene.attachObjectAssetStore(remoteClient, group, remoteClient.AgentId, out itemId);
+                    }
+                    else
+                    {
+                        itemId = group.GetFromItemID();
+                    }
+
+                    m_scene.AttachObject(remoteClient, AttachmentPt, itemId, group);
+
+                    group.AttachToAgent(remoteClient.AgentId, AttachmentPt, attachPos, silent);
+                    
+                    // In case it is later dropped again, don't let
+                    // it get cleaned up
+                    group.RootPart.RemFlag(PrimFlags.TemporaryOnRez);
+                    group.HasGroupChanged = false;
+                }
+                else
+                {
+                    remoteClient.SendAgentAlertMessage(
+                        "You don't have sufficient permissions to attach this object", false);
+                    
+                    return false;
+                }
+            }
+            else
+            {
+                m_log.DebugFormat("[SCENE GRAPH]: AttachObject found no such scene object {0}", objectLocalID);
+                return false;
+            }
+
+            return true;
+        }        
+    }
+}