1 files changed, 208 insertions, 0 deletions

diff --git a/OpenSim/Region/Physics/BulletSNPlugin/BSShapes.cs b/OpenSim/Region/Physics/BulletSNPlugin/BSShapes.cs
new file mode 100644
index 0000000..8ff0275
--- /dev/null
+++ b/OpenSim/Region/Physics/BulletSNPlugin/BSShapes.cs
@@ -0,0 +1,208 @@
+/*
+ * 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 copyrightD
+ *       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;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenSim.Region.Physics.BulletSNPlugin
+{
+public abstract class BSShape
+{
+    public Object ptr { get; set; }
+    public BSPhysicsShapeType type { get; set; }
+    public System.UInt64 key { get; set; }
+    public int referenceCount { get; set; }
+    public DateTime lastReferenced { get; set; }
+
+    public BSShape()
+    {
+        ptr = null;
+        type = BSPhysicsShapeType.SHAPE_UNKNOWN;
+        key = 0;
+        referenceCount = 0;
+        lastReferenced = DateTime.Now;
+    }
+
+    // Get a reference to a physical shape. Create if it doesn't exist
+    public static BSShape GetShapeReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
+    {
+        BSShape ret = null;
+
+        if (prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_CAPSULE)
+        {
+            // an avatar capsule is close to a native shape (it is not shared)
+            ret = BSShapeNative.GetReference(physicsScene, prim, BSPhysicsShapeType.SHAPE_CAPSULE,
+                                        FixedShapeKey.KEY_CAPSULE);
+            physicsScene.DetailLog("{0},BSShape.GetShapeReference,avatarCapsule,shape={1}", prim.LocalID, ret);
+        }
+
+        // Compound shapes are handled special as they are rebuilt from scratch.
+        // This isn't too great a hardship since most of the child shapes will already been created.
+        if (ret == null  && prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_COMPOUND)
+        {
+            // Getting a reference to a compound shape gets you the compound shape with the root prim shape added
+            ret = BSShapeCompound.GetReference(prim);
+            physicsScene.DetailLog("{0},BSShapeCollection.CreateGeom,compoundShape,shape={1}", prim.LocalID, ret);
+        }
+
+        if (ret == null)
+            ret = GetShapeReferenceNonSpecial(physicsScene, forceRebuild, prim);
+
+        return ret;
+    }
+    public static BSShape GetShapeReferenceNonSpecial(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
+    {
+        return null;
+    }
+    public static BSShape GetShapeReferenceNonNative(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
+    {
+        return null;
+    }
+
+    // Release the use of a physical shape.
+    public abstract void Dereference(BSScene physicsScene);
+
+    // All shapes have a static call to get a reference to the physical shape
+    // protected abstract static BSShape GetReference();
+
+    public override string ToString()
+    {
+        StringBuilder buff = new StringBuilder();
+        buff.Append("<p=");
+        buff.Append(ptr.ToString());
+        buff.Append(",s=");
+        buff.Append(type.ToString());
+        buff.Append(",k=");
+        buff.Append(key.ToString("X"));
+        buff.Append(",c=");
+        buff.Append(referenceCount.ToString());
+        buff.Append(">");
+        return buff.ToString();
+    }
+}
+
+public class BSShapeNull : BSShape
+{
+    public BSShapeNull() : base()
+    {
+    }
+    public static BSShape GetReference() { return new BSShapeNull();  }
+    public override void Dereference(BSScene physicsScene) { /* The magic of garbage collection will make this go away */ }
+}
+
+public class BSShapeNative : BSShape
+{
+    private static string LogHeader = "[BULLETSIM SHAPE NATIVE]";
+    public BSShapeNative() : base()
+    {
+    }
+    public static BSShape GetReference(BSScene physicsScene, BSPhysObject prim, 
+                    BSPhysicsShapeType shapeType, FixedShapeKey shapeKey) 
+    {
+        // Native shapes are not shared and are always built anew.
+        return new BSShapeNative(physicsScene, prim, shapeType, shapeKey);
+    }
+
+    private BSShapeNative(BSScene physicsScene, BSPhysObject prim,
+                    BSPhysicsShapeType shapeType, FixedShapeKey shapeKey)
+    {
+        ShapeData nativeShapeData = new ShapeData();
+        nativeShapeData.Type = shapeType;
+        nativeShapeData.ID = prim.LocalID;
+        nativeShapeData.Scale = prim.Scale;
+        nativeShapeData.Size = prim.Scale;
+        nativeShapeData.MeshKey = (ulong)shapeKey;
+        nativeShapeData.HullKey = (ulong)shapeKey;
+
+       
+        if (shapeType == BSPhysicsShapeType.SHAPE_CAPSULE)
+        {
+            ptr = BulletSimAPI.BuildCapsuleShape2(physicsScene.World.ptr, 1f, 1f, prim.Scale);
+            physicsScene.DetailLog("{0},BSShapeCollection.BuiletPhysicalNativeShape,capsule,scale={1}", prim.LocalID, prim.Scale);
+        }
+        else
+        {
+            ptr = BulletSimAPI.BuildNativeShape2(physicsScene.World.ptr, nativeShapeData);
+        }
+        if (ptr == null)
+        {
+            physicsScene.Logger.ErrorFormat("{0} BuildPhysicalNativeShape failed. ID={1}, shape={2}",
+                                    LogHeader, prim.LocalID, shapeType);
+        }
+        type = shapeType;
+        key = (UInt64)shapeKey;
+    }
+    // Make this reference to the physical shape go away since native shapes are not shared.
+    public override void Dereference(BSScene physicsScene)
+    {
+        // Native shapes are not tracked and are released immediately
+        physicsScene.DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,shape={1}", BSScene.DetailLogZero, this);
+        BulletSimAPI.DeleteCollisionShape2(physicsScene.World.ptr, ptr);
+        ptr = null;
+        // Garbage collection will free up this instance.
+    }
+}
+
+public class BSShapeMesh : BSShape
+{
+    private static string LogHeader = "[BULLETSIM SHAPE MESH]";
+    private static Dictionary<System.UInt64, BSShapeMesh> Meshes = new Dictionary<System.UInt64, BSShapeMesh>();
+
+    public BSShapeMesh() : base()
+    {
+    }
+    public static BSShape GetReference() { return new BSShapeNull();  }
+    public override void Dereference(BSScene physicsScene) { }
+}
+
+public class BSShapeHull : BSShape
+{
+    private static string LogHeader = "[BULLETSIM SHAPE HULL]";
+    private static Dictionary<System.UInt64, BSShapeHull> Hulls = new Dictionary<System.UInt64, BSShapeHull>();
+
+    public BSShapeHull() : base()
+    {
+    }
+    public static BSShape GetReference() { return new BSShapeNull();  }
+    public override void Dereference(BSScene physicsScene) { }
+}
+
+public class BSShapeCompound : BSShape
+{
+    private static string LogHeader = "[BULLETSIM SHAPE COMPOUND]";
+    public BSShapeCompound() : base()
+    {
+    }
+    public static BSShape GetReference(BSPhysObject prim) 
+    { 
+        return new BSShapeNull();
+    }
+    public override void Dereference(BSScene physicsScene) { }
+}
+}