public BSActorAvatarMove(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_velocityMotor = null;
m_walkingUpStairs = 0;
m_physicsScene.DetailLog("{0},BSActorAvatarMove,constructor", m_controllingPrim.LocalID);
}
BulletShape CreatePhysicalMesh(BSScene physicsScene, BSPhysObject prim, UInt64 newMeshKey,
PrimitiveBaseShape pbs, OMV.Vector3 size, float lod)
{
return BSShapeMesh.CreatePhysicalMeshShape(physicsScene, prim, newMeshKey, pbs, size, lod,
(w, iC, i, vC, v) =>
{
shapeInfo.Vertices = vC;
return physicsScene.PE.CreateMeshShape(w, iC, i, vC, v);
});
}
public static BulletShape CreatePhysicalNativeShape(BSScene physicsScene, BSPhysObject prim,
BSPhysicsShapeType shapeType, FixedShapeKey shapeKey)
{
BulletShape newShape;
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)
{
newShape = physicsScene.PE.BuildCapsuleShape(physicsScene.World, 1f, 1f, prim.Scale);
physicsScene.DetailLog("{0},BSShapeNative,capsule,scale={1}", prim.LocalID, prim.Scale);
}
else
{
newShape = physicsScene.PE.BuildNativeShape(physicsScene.World, nativeShapeData);
}
if (!newShape.HasPhysicalShape)
{
physicsScene.Logger.ErrorFormat("{0} BuildPhysicalNativeShape failed. ID={1}, shape={2}",
LogHeader, prim.LocalID, shapeType);
}
newShape.shapeType = shapeType;
newShape.isNativeShape = true;
newShape.shapeKey = (UInt64) shapeKey;
return newShape;
}
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(CreatePhysicalNativeShape(physicsScene, prim, shapeType, shapeKey));
}
public static string UsefulPrimInfo(BSScene pScene, BSPhysObject prim)
{
StringBuilder buff = new StringBuilder(prim.PhysObjectName);
buff.Append("/pos=");
buff.Append(prim.RawPosition);
if (pScene != null)
{
buff.Append("/rgn=");
buff.Append(pScene.PhysicsSceneName);
}
return buff.ToString();
}
// Get another reference to this shape. public abstract BSShape GetReference(BSScene pPhysicsScene, BSPhysObject pPrim);
public static BSShape GetReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
{
float lod;
UInt64 newMeshKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
physicsScene.DetailLog("{0},BSShapeGImpact,getReference,newKey={1},size={2},lod={3}", prim.LocalID,
newMeshKey.ToString("X"), prim.Size, lod);
BSShapeGImpact retGImpact;
lock (GImpacts)
{
if (GImpacts.TryGetValue(newMeshKey, out retGImpact))
{
// Teh mesh has already been created. Return a new reference to same.
retGImpact.IncrementReference();
}
else
{
retGImpact = new BSShapeGImpact(new BulletShape());
BulletShape newShape = retGImpact.CreatePhysicalGImpact(physicsScene, prim, newMeshKey,
prim.BaseShape, prim.Size, lod);
// Check to see if mesh was created (might require an asset).
newShape = VerifyMeshCreated(physicsScene, newShape, prim);
newShape.shapeKey = newMeshKey;
if (!newShape.isNativeShape || prim.AssetFailed())
{
// If a mesh was what was created, remember the built shape for later sharing.
// Also note that if meshing failed we put it in the mesh list as there is nothing
// else to do about the mesh.
GImpacts.Add(newMeshKey, retGImpact);
}
retGImpact.physShapeInfo = newShape;
}
}
return retGImpact;
}
public override bool Collide(uint collidingWith, BSPhysObject collidee,
OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth)
{
bool ret = false;
// Ask the linkset if it wants to handle the collision
if (!Linkset.HandleCollide(collidingWith, collidee, contactPoint, contactNormal, pentrationDepth))
{
// The linkset didn't handle it so pass the collision through normal processing
ret = base.Collide(collidingWith, collidee, contactPoint, contactNormal, pentrationDepth);
}
return ret;
}
public bool GetBodyAndShape(bool forceRebuild, BulletWorld sim, BSPhysObject prim)
{
return(GetBodyAndShape(forceRebuild, sim, prim, null));
}
// The simulation step is telling this object about a collision.
// Return 'true' if a collision was processed and should be sent up.
// Return 'false' if this object is not enabled/subscribed/appropriate for or has already seen this collision.
// Called at taint time from within the Step() function
public virtual bool Collide(uint collidingWith, BSPhysObject collidee,
OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth)
{
bool ret = false;
bool p2col = true;
// We only need to test p2 for 'jump crouch purposes'
if (TypeName == "BSCharacter" && collidee is BSPrim)
{
// Testing if the collision is at the feet of the avatar
if ((Position.Z - contactPoint.Z) < (Size.Z * 0.5f))
p2col = false;
}
// The following lines make IsColliding(), CollidingGround() and CollidingObj work
if (p2col)
CollidingStep = PhysicsScene.SimulationStep;
TrueCollidingStep = PhysicsScene.SimulationStep;
CollisionAccumulation++;
// For movement tests, remember if we are colliding with an object that is moving.
ColliderIsMoving = collidee != null ? (collidee.RawVelocity != OMV.Vector3.Zero) : false;
ColliderIsVolumeDetect = collidee != null ? (collidee.IsVolumeDetect) : false;
// If someone has subscribed for collision events log the collision so it will be reported up
if (SubscribedEvents())
{
CollisionCollection.AddCollider(collidingWith,
new ContactPoint(contactPoint, contactNormal, pentrationDepth, (ActorTypes)PhysicsActorType));
DetailLog(
"{0},{1}.Collison.AddCollider,call,with={2},point={3},normal={4},depth={5},colliderMoving={6}",
LocalID, TypeName, collidingWith, contactPoint, contactNormal, pentrationDepth, ColliderIsMoving);
ret = true;
}
return ret;
}
public BSActorLockAxis (BSScene physicsScene, BSPhysObject pObj, string actorName)
: base (physicsScene, pObj, actorName)
{
m_physicsScene.DetailLog ("{0},BSActorLockAxis,constructor", m_controllingPrim.LocalID);
LockAxisConstraint = null;
}
public BSActorSetTorque(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_torqueMotor = null;
m_physicsScene.DetailLog("{0},BSActorSetTorque,constructor", m_controllingPrim.LocalID);
}
public BSActorLockAxis(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_physicsScene.DetailLog("{0},BSActorLockAxis,constructor", m_controllingPrim.LocalID);
LockAxisConstraint = null;
}
public BSActorMoveToTarget(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_targetMotor = null;
m_physicsScene.DetailLog("{0},BSActorMoveToTarget,constructor", m_controllingPrim.LocalID);
}
public static BSShape GetReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
{
float lod;
UInt64 newHullKey = BSShape.ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
BSShapeHull retHull;
bool foundHull = false;
lock (Hulls)
foundHull = Hulls.TryGetValue (newHullKey, out retHull);
if (foundHull)
{
// The mesh has already been created. Return a new reference to same.
retHull.IncrementReference();
}
else
{
retHull = new BSShapeHull(new BulletShape());
// An instance of this mesh has not been created. Build and remember same.
BulletShape newShape = retHull.CreatePhysicalHull(physicsScene, prim, newHullKey, prim.BaseShape, prim.Size, lod);
// Check to see if hull was created (might require an asset).
newShape = VerifyMeshCreated(physicsScene, newShape, prim);
if (!newShape.isNativeShape || prim.AssetFailed())
{
// If a mesh was what was created, remember the built shape for later sharing.
lock(Hulls)
Hulls.Add(newHullKey, retHull);
}
retHull.physShapeInfo = newShape;
}
physicsScene.DetailLog("{0},BSShapeHull,getReference,hull={1},size={2},lod={3}", prim.LocalID, retHull,
prim.Size, lod);
return retHull;
}
bool CreateGeom(bool forceRebuild, BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
PrimitiveBaseShape pbs = prim.BaseShape;
// Kludge to create the capsule for the avatar.
// TODO: Remove/redo this when BSShapeAvatar is working!!
BSCharacter theChar = prim as BSCharacter;
if (theChar != null)
{
DereferenceExistingShape(prim, shapeCallback);
switch (BSParam.AvatarShape)
{
case AvatarShapeCapsule:
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_CAPSULE,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeCube:
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeOvoid:
// Saddly, Bullet doesn't scale spheres so this doen't work as an avatar shape
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeMesh:
break;
default:
break;
}
}
// If the prim attributes are simple, this could be a simple Bullet native shape
// Native shapes work whether to object is static or physical.
if (!haveShape && nativeShapePossible && pbs != null && PrimHasNoCuts(pbs) &&
(!pbs.SculptEntry || (pbs.SculptEntry && !BSParam.ShouldMeshSculptedPrim)))
{
// Get the scale of any existing shape so we can see if the new shape is same native type and same size.
OMV.Vector3 scaleOfExistingShape = OMV.Vector3.Zero;
if (prim.PhysShape.HasPhysicalShape)
{
scaleOfExistingShape = PhysicsScene.PE.GetLocalScaling(prim.PhysShape.physShapeInfo);
}
if (DDetail)
{
DetailLog(
"{0},BSShapeCollection.CreateGeom,maybeNative,force={1},primScale={2},primSize={3},primShape={4}",
prim.LocalID, forceRebuild, prim.Scale, prim.Size, prim.PhysShape.physShapeInfo.shapeType);
}
// It doen't look like Bullet scales native spheres so make sure the scales are all equal
if ((pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1) &&
pbs.Scale.X == pbs.Scale.Y && pbs.Scale.Y == pbs.Scale.Z)
{
haveShape = true;
if (forceRebuild || prim.PhysShape.ShapeType != BSPhysicsShapeType.SHAPE_SPHERE)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_SPHERE);
ret = true;
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},rebuild={2},shape={3}",
prim.LocalID, forceRebuild, ret, prim.PhysShape);
}
}
// If we didn't make a sphere, maybe a box will work.
if (!haveShape && pbs.ProfileShape == ProfileShape.Square && pbs.PathCurve == (byte)Extrusion.Straight)
{
haveShape = true;
if (forceRebuild || prim.Scale != scaleOfExistingShape ||
prim.PhysShape.ShapeType != BSPhysicsShapeType.SHAPE_BOX)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_BOX);
ret = true;
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},rebuild={2},shape={3}", prim.LocalID,
forceRebuild, ret, prim.PhysShape);
}
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
if (!haveShape && pbs != null)
{
ret = CreateGeomMeshOrHull(prim, shapeCallback);
}
return(ret);
}
BulletShape CreatePhysicalHull(BSScene physicsScene, BSPhysObject prim, UInt64 newHullKey,
PrimitiveBaseShape pbs, OMV.Vector3 size, float lod)
{
BulletShape newShape = new BulletShape();
IMesh meshData;
List<List<OMV.Vector3>> allHulls = null;
lock (physicsScene.mesher)
{
// Pass true for physicalness as this prevents the creation of bounding box which is not needed
meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod, true /* isPhysical */,
false /* shouldCache */);
// If we should use the asset's hull info, fetch it out of the locked mesher
if (meshData != null && BSParam.ShouldUseAssetHulls)
{
Meshmerizer realMesher = physicsScene.mesher as Meshmerizer;
if (realMesher != null)
{
allHulls = realMesher.GetConvexHulls(size);
}
if (allHulls == null)
{
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,assetHulls,noAssetHull", prim.LocalID);
}
}
}
// If there is hull data in the mesh asset, build the hull from that
if (allHulls != null && BSParam.ShouldUseAssetHulls)
{
int hullCount = allHulls.Count;
shapeInfo.HullCount = hullCount;
int totalVertices = 1; // include one for the count of the hulls
// Using the structure described for HACD hulls, create the memory structure
// to pass the hull data to the creater.
foreach (List<OMV.Vector3> hullVerts in allHulls)
{
totalVertices += 4; // add four for the vertex count and centroid
totalVertices += hullVerts.Count*3; // one vertex is three dimensions
}
float[] convHulls = new float[totalVertices];
convHulls[0] = (float) hullCount;
int jj = 1;
int hullIndex = 0;
foreach (List<OMV.Vector3> hullVerts in allHulls)
{
convHulls[jj + 0] = hullVerts.Count;
convHulls[jj + 1] = 0f; // centroid x,y,z
convHulls[jj + 2] = 0f;
convHulls[jj + 3] = 0f;
jj += 4;
foreach (OMV.Vector3 oneVert in hullVerts)
{
convHulls[jj + 0] = oneVert.X;
convHulls[jj + 1] = oneVert.Y;
convHulls[jj + 2] = oneVert.Z;
jj += 3;
}
shapeInfo.SetVerticesPerHull(hullIndex, hullVerts.Count);
hullIndex++;
}
// create the hull data structure in Bullet
newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,AssetHulls,hulls={1},totVert={2},shape={3}",
prim.LocalID, hullCount, totalVertices, newShape);
}
// If no hull specified in the asset and we should use Bullet's HACD approximation...
if (!newShape.HasPhysicalShape && BSParam.ShouldUseBulletHACD)
{
// Build the hull shape from an existing mesh shape.
// The mesh should have already been created in Bullet.
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,bulletHACD,entry", prim.LocalID);
var meshShape = BSShapeMesh.GetReference(physicsScene, true, prim);
if (meshShape.physShapeInfo.HasPhysicalShape)
{
HACDParams parms = new HACDParams();
parms.maxVerticesPerHull = BSParam.BHullMaxVerticesPerHull;
parms.minClusters = BSParam.BHullMinClusters;
parms.compacityWeight = BSParam.BHullCompacityWeight;
parms.volumeWeight = BSParam.BHullVolumeWeight;
parms.concavity = BSParam.BHullConcavity;
parms.addExtraDistPoints = BSParam.NumericBool(BSParam.BHullAddExtraDistPoints);
parms.addNeighboursDistPoints = BSParam.NumericBool(BSParam.BHullAddNeighboursDistPoints);
parms.addFacesPoints = BSParam.NumericBool(BSParam.BHullAddFacesPoints);
parms.shouldAdjustCollisionMargin = BSParam.NumericBool(BSParam.BHullShouldAdjustCollisionMargin);
parms.whichHACD = 0; // Use the HACD routine that comes with Bullet
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,hullFromMesh,beforeCall", prim.LocalID,
newShape.HasPhysicalShape);
newShape = physicsScene.PE.BuildHullShapeFromMesh(physicsScene.World, meshShape.physShapeInfo, parms);
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,hullFromMesh,shape={1}", prim.LocalID,
newShape);
// Now done with the mesh shape.
shapeInfo.HullCount = 1;
BSShapeMesh maybeMesh = meshShape as BSShapeMesh;
if (maybeMesh != null)
shapeInfo.SetVerticesPerHull(0, maybeMesh.shapeInfo.Vertices);
meshShape.Dereference(physicsScene);
}
physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,bulletHACD,exit,hasBody={1}", prim.LocalID,
newShape.HasPhysicalShape);
}
// If no other hull specifications, use our HACD hull approximation.
if (!newShape.HasPhysicalShape && meshData != null)
{
if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.Fetched)
{
// Release the fetched asset data once it has been used.
pbs.SculptData = new byte[0];
prim.PrimAssetState = BSPhysObject.PrimAssetCondition.Unknown;
}
int[] indices = meshData.getIndexListAsInt();
//format conversion from IMesh format to DecompDesc format
List<int> convIndices = new List<int>();
List<float3> convVertices = new List<float3>();
for (int ii = 0; ii < indices.GetLength(0); ii++)
{
convIndices.Add(indices[ii]);
}
// greythane - use the integer array instead of OS type vertex list
// List<OMV.Vector3> vertices = meshData.getVertexList();
// foreach (OMV.Vector3 vv in vertices)
// {
// convVertices.Add(new float3(vv.X, vv.Y, vv.Z));
// }
var vertices = meshData.getVertexListAsFloat();
var vertexCount = vertices.Length / 3;
for (int i = 0; i < vertexCount; i++)
{
convVertices.Add(new float3(vertices[3 * i + 0], vertices[3 * i + 1], vertices[3 * i + 2]));
}
uint maxDepthSplit = (uint) BSParam.CSHullMaxDepthSplit;
if (BSParam.CSHullMaxDepthSplit != BSParam.CSHullMaxDepthSplitForSimpleShapes)
{
// Simple primitive shapes we know are convex so they are better implemented with
// fewer hulls.
// Check for simple shape (prim without cuts) and reduce split parameter if so.
if (BSShapeCollection.PrimHasNoCuts(pbs))
{
maxDepthSplit = (uint) BSParam.CSHullMaxDepthSplitForSimpleShapes;
}
}
// setup and do convex hull conversion
m_hulls = new List<ConvexResult>();
DecompDesc dcomp = new DecompDesc();
dcomp.mIndices = convIndices;
dcomp.mVertices = convVertices;
dcomp.mDepth = maxDepthSplit;
dcomp.mCpercent = BSParam.CSHullConcavityThresholdPercent;
dcomp.mPpercent = BSParam.CSHullVolumeConservationThresholdPercent;
dcomp.mMaxVertices = (uint) BSParam.CSHullMaxVertices;
dcomp.mSkinWidth = BSParam.CSHullMaxSkinWidth;
ConvexBuilder convexBuilder = new ConvexBuilder(HullReturn);
// create the hull into the _hulls variable
convexBuilder.process(dcomp);
physicsScene.DetailLog(
"{0},BSShapeCollection.CreatePhysicalHull,key={1},inVert={2},inInd={3},split={4},hulls={5}",
BSScene.DetailLogZero, newHullKey, indices.GetLength(0), vertices.Length, maxDepthSplit,
m_hulls.Count);
// Convert the vertices and indices for passing to unmanaged.
// The hull information is passed as a large floating point array.
// The format is:
// convHulls[0] = number of hulls
// convHulls[1] = number of vertices in first hull
// convHulls[2] = hull centroid X coordinate
// convHulls[3] = hull centroid Y coordinate
// convHulls[4] = hull centroid Z coordinate
// convHulls[5] = first hull vertex X
// convHulls[6] = first hull vertex Y
// convHulls[7] = first hull vertex Z
// convHulls[8] = second hull vertex X
// ...
// convHulls[n] = number of vertices in second hull
// convHulls[n+1] = second hull centroid X coordinate
// ...
//
// TODO: is is very inefficient. Someday change the convex hull generator to return
// data structures that do not need to be converted in order to pass to Bullet.
// And maybe put the values directly into pinned memory rather than marshaling.
int hullCount = m_hulls.Count;
int totalVertices = 1; // include one for the count of the hulls
foreach (ConvexResult cr in m_hulls)
{
totalVertices += 4; // add four for the vertex count and centroid
totalVertices += cr.HullIndices.Count*3; // we pass just triangles
}
float[] convHulls = new float[totalVertices];
convHulls[0] = (float) hullCount;
int jj = 1;
foreach (ConvexResult cr in m_hulls)
{
// copy vertices for index access
float3[] verts = new float3[cr.HullVertices.Count];
int kk = 0;
foreach (float3 ff in cr.HullVertices)
{
verts[kk++] = ff;
}
// add to the array one hull's worth of data
convHulls[jj++] = cr.HullIndices.Count;
convHulls[jj++] = 0f; // centroid x,y,z
convHulls[jj++] = 0f;
convHulls[jj++] = 0f;
foreach (int ind in cr.HullIndices)
{
convHulls[jj++] = verts[ind].x;
convHulls[jj++] = verts[ind].y;
convHulls[jj++] = verts[ind].z;
}
}
// create the hull data structure in Bullet
newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
}
newShape.shapeKey = newHullKey;
return newShape;
}
// return 'true' if the prim's shape was changed.
bool CreateGeomMeshOrHull(BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
bool ret = false;
// Note that if it's a native shape, the check for physical/non-physical is not
// made. Native shapes work in either case.
if (prim.IsPhysical && BSParam.ShouldUseHullsForPhysicalObjects)
{
// Use a simple, single mesh convex hull shape if the object is simple enough
BSShape potentialHull = null;
PrimitiveBaseShape pbs = prim.BaseShape;
// Use a simple, one section convex shape for prims that are probably convex (no cuts or twists)
if (BSParam.ShouldUseSingleConvexHullForPrims && pbs != null && !pbs.SculptEntry && PrimHasNoCuts(pbs))
{
potentialHull = BSShapeConvexHull.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// use the GImpact shape if it is a prim that has some concaveness
if (potentialHull == null && BSParam.ShouldUseGImpactShapeForPrims && pbs != null && !pbs.SculptEntry)
{
potentialHull = BSShapeGImpact.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// If not any of the simple cases, just make a hull
if (potentialHull == null)
{
potentialHull = BSShapeHull.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape || potentialHull.ShapeType != prim.PhysShape.ShapeType ||
potentialHull.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialHull;
ret = true;
}
else
{
// The current shape on the prim is the correct one. We don't need the potential reference.
potentialHull.Dereference(PhysicsScene);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1}", prim.LocalID, prim.PhysShape);
}
}
else
{
// Non-physical objects should be just meshes.
BSShape potentialMesh = BSShapeMesh.GetReference(PhysicsScene, false /* forceRebuld */, prim);
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape || potentialMesh.ShapeType != prim.PhysShape.ShapeType ||
potentialMesh.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialMesh;
ret = true;
}
else
{
// We don't need this reference to the mesh that is already being using.
potentialMesh.Dereference(PhysicsScene);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1}", prim.LocalID, prim.PhysShape);
}
}
return(ret);
}
public override BSShape GetReference(BSScene physicsScene, BSPhysObject prim)
{
// Calling this reference means we want another handle to an existing shape
// (usually linksets) so return this copy.
IncrementReference();
return this;
}
// Called to update/change the body and shape for an object.
// First checks the shape and updates that if necessary then makes
// sure the body is of the right type.
// Return 'true' if either the body or the shape changed.
// 'shapeCallback' and 'bodyCallback' are, if non-null, functions called just before
// the current shape or body is destroyed. This allows the caller to remove any
// higher level dependencies on the shape or body. Mostly used for LinkSets to
// remove the physical constraints before the body is destroyed.
// Called at taint-time!!
public bool GetBodyAndShape(bool forceRebuild, BulletWorld sim, BSPhysObject prim, PhysicalDestructionCallback bodyCallback)
{
PhysicsScene.AssertInTaintTime("BSShapeCollection.GetBodyAndShape");
bool ret;
// This lock could probably be pushed down lower but building shouldn't take long
lock (m_collectionActivityLock)
{
// Do we have the correct geometry for this type of object?
// Updates prim.BSShape with information/pointers to shape.
// Returns 'true' of BSShape is changed to a new shape.
bool newGeom = CreateGeom(forceRebuild, prim, bodyCallback);
// If we had to select a new shape geometry for the object,
// rebuild the body around it.
// Updates prim.BSBody with information/pointers to requested body
// Returns 'true' if BSBody was changed.
bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World, bodyCallback);
ret = newGeom || newBody;
}
DetailLog("{0},BSShapeCollection.GetBodyAndShape,taintExit,force={1},ret={2},body={3},shape={4}",
prim.LocalID, forceRebuild, ret, prim.PhysBody, prim.PhysShape);
return ret;
}
public static BSShape GetReference(BSPhysObject prim)
{
return new BSShapeNull();
}
public bool GetBodyAndShape(bool forceRebuild, BulletWorld sim, BSPhysObject prim)
{
return GetBodyAndShape(forceRebuild, sim, prim, null);
}
// The creation of a mesh or hull can fail if an underlying asset is not available.
// There are two cases: 1) the asset is not in the cache and it needs to be fetched;
// and 2) the asset cannot be converted (like failed decompression of JPEG2000s).
// The first case causes the asset to be fetched. The second case requires
// us to not loop forever.
// Called after creating a physical mesh or hull. If the physical shape was created,
// just return.
public static BulletShape VerifyMeshCreated(BSScene physicsScene, BulletShape newShape, BSPhysObject prim)
{
// If the shape was successfully created, nothing more to do
if (newShape.HasPhysicalShape)
return newShape;
// VerifyMeshCreated is called after trying to create the mesh. If we think the asset had been
// fetched but we end up here again, the meshing of the asset must have failed.
// Prevent trying to keep fetching the mesh by declaring failure.
if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.Fetched)
{
prim.PrimAssetState = BSPhysObject.PrimAssetCondition.FailedMeshing;
physicsScene.Logger.WarnFormat("{0} Fetched asset would not mesh. prim={1}, texture={2}",
LogHeader, UsefulPrimInfo(physicsScene, prim), prim.BaseShape.SculptTexture);
physicsScene.DetailLog("{0},BSShape.VerifyMeshCreated,setFailed,prim={1},tex={2}",
prim.LocalID, UsefulPrimInfo(physicsScene, prim), prim.BaseShape.SculptTexture);
}
else
{
// If this mesh has an underlying asset and we have not failed getting it before, fetch the asset
if (prim.BaseShape.SculptEntry
&& prim.PrimAssetState != BSPhysObject.PrimAssetCondition.FailedAssetFetch
&& prim.PrimAssetState != BSPhysObject.PrimAssetCondition.Waiting
&& prim.BaseShape.SculptTexture != OMV.UUID.Zero
)
{
physicsScene.DetailLog("{0},BSShapeCollection.VerifyMeshCreated,fetchAsset", prim.LocalID);
// Multiple requestors will know we're waiting for this asset
prim.PrimAssetState = BSPhysObject.PrimAssetCondition.Waiting;
BSPhysObject xprim = prim;
Util.FireAndForget(delegate
{
BSPhysObject yprim = xprim; // probably not necessary, but, just in case.
physicsScene.Scene.AssetService.Get(yprim.BaseShape.SculptTexture.ToString(), null,
delegate(string id, Object sender, AssetBase asset)
{
bool assetFound = false;
string mismatchIDs = String.Empty; // DEBUG DEBUG
if (asset != null && yprim.BaseShape.SculptEntry)
{
if (yprim.BaseShape.SculptTexture == asset.ID)
{
yprim.BaseShape.SculptData = asset.Data;
// This will cause the prim to see that the filler shape is not the right
// one and try again to build the object.
// No race condition with the normal shape setting since the rebuild is at taint time.
yprim.ForceBodyShapeRebuild(false /* inTaintTime */);
assetFound = true;
}
else
{
mismatchIDs = yprim.BaseShape.SculptTexture + "/" + asset.ID;
}
}
if (assetFound)
yprim.PrimAssetState = BSPhysObject.PrimAssetCondition.Fetched;
else
yprim.PrimAssetState = BSPhysObject.PrimAssetCondition.FailedAssetFetch;
physicsScene.DetailLog("{0},BSShapeCollection,fetchAssetCallback,found={1},isSculpt={2},ids={3}",
yprim.LocalID, assetFound, yprim.BaseShape.SculptEntry, mismatchIDs);
});
});
}
else
{
if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.FailedAssetFetch)
{
physicsScene.Logger.WarnFormat("{0} Mesh failed to fetch asset. obj={1}, texture={2}",
LogHeader, prim.PhysObjectName, prim.BaseShape.SculptTexture);
}
}
}
// While we wait for the mesh defining asset to be loaded, stick in a simple box for the object.
BSShape fillShape = BSShapeNative.GetReference(physicsScene, prim, BSPhysicsShapeType.SHAPE_BOX, FixedShapeKey.KEY_BOX);
physicsScene.DetailLog("{0},BSShape.VerifyMeshCreated,boxTempShape", prim.LocalID);
return fillShape.physShapeInfo;
}
// If the existing prim's shape is to be replaced, remove the tie to the existing shape
// before replacing it.
void DereferenceExistingShape(BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
if (prim.PhysShape.HasPhysicalShape)
{
if (shapeCallback != null)
shapeCallback(prim.PhysBody, prim.PhysShape.physShapeInfo);
prim.PhysShape.Dereference(PhysicsScene);
}
prim.PhysShape = new BSShapeNull();
}
public override BSShape GetReference(BSScene pPhysicsScene, BSPhysObject pPrim)
{
return new BSShapeNull();
}
bool CreateGeom(bool forceRebuild, BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
PrimitiveBaseShape pbs = prim.BaseShape;
// Kludge to create the capsule for the avatar.
// TODO: Remove/redo this when BSShapeAvatar is working!!
BSCharacter theChar = prim as BSCharacter;
if (theChar != null)
{
DereferenceExistingShape(prim, shapeCallback);
switch (BSParam.AvatarShape)
{
case AvatarShapeCapsule:
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_CAPSULE,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeCube:
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeOvoid:
// Saddly, Bullet doesn't scale spheres so this doen't work as an avatar shape
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_CAPSULE);
ret = true;
haveShape = true;
break;
case AvatarShapeMesh:
break;
default:
break;
}
}
// If the prim attributes are simple, this could be a simple Bullet native shape
// Native shapes work whether to object is static or physical.
if (!haveShape && nativeShapePossible && pbs != null && PrimHasNoCuts(pbs) &&
(!pbs.SculptEntry || (pbs.SculptEntry && !BSParam.ShouldMeshSculptedPrim)))
{
// Get the scale of any existing shape so we can see if the new shape is same native type and same size.
OMV.Vector3 scaleOfExistingShape = OMV.Vector3.Zero;
if (prim.PhysShape.HasPhysicalShape)
scaleOfExistingShape = PhysicsScene.PE.GetLocalScaling(prim.PhysShape.physShapeInfo);
if (DDetail)
DetailLog(
"{0},BSShapeCollection.CreateGeom,maybeNative,force={1},primScale={2},primSize={3},primShape={4}",
prim.LocalID, forceRebuild, prim.Scale, prim.Size, prim.PhysShape.physShapeInfo.shapeType);
// It doen't look like Bullet scales native spheres so make sure the scales are all equal
if ((pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1) &&
pbs.Scale.X == pbs.Scale.Y && pbs.Scale.Y == pbs.Scale.Z)
{
haveShape = true;
if (forceRebuild || prim.PhysShape.ShapeType != BSPhysicsShapeType.SHAPE_SPHERE)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_SPHERE);
ret = true;
}
if (DDetail)
DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},rebuild={2},shape={3}",
prim.LocalID, forceRebuild, ret, prim.PhysShape);
}
// If we didn't make a sphere, maybe a box will work.
if (!haveShape && pbs.ProfileShape == ProfileShape.Square && pbs.PathCurve == (byte)Extrusion.Straight)
{
haveShape = true;
if (forceRebuild || prim.Scale != scaleOfExistingShape ||
prim.PhysShape.ShapeType != BSPhysicsShapeType.SHAPE_BOX)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = BSShapeNative.GetReference(PhysicsScene, prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_BOX);
ret = true;
}
if (DDetail)
DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},rebuild={2},shape={3}", prim.LocalID,
forceRebuild, ret, prim.PhysShape);
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
if (!haveShape && pbs != null)
{
ret = CreateGeomMeshOrHull(prim, shapeCallback);
}
return ret;
}
public override BSShape GetReference(BSScene pPhysicsScene, BSPhysObject pPrim)
{
// Native shapes are not shared so we return a new shape.
BSShape ret = null;
lock (physShapeInfo)
{
ret = new BSShapeNative(CreatePhysicalNativeShape(pPhysicsScene, pPrim,
physShapeInfo.shapeType, (FixedShapeKey) physShapeInfo.shapeKey));
}
return ret;
}
// return 'true' if the prim's shape was changed.
bool CreateGeomMeshOrHull(BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
bool ret = false;
// Note that if it's a native shape, the check for physical/non-physical is not
// made. Native shapes work in either case.
if (prim.IsPhysical && BSParam.ShouldUseHullsForPhysicalObjects)
{
// Use a simple, single mesh convex hull shape if the object is simple enough
BSShape potentialHull = null;
PrimitiveBaseShape pbs = prim.BaseShape;
// Use a simple, one section convex shape for prims that are probably convex (no cuts or twists)
if (BSParam.ShouldUseSingleConvexHullForPrims && pbs != null && !pbs.SculptEntry && PrimHasNoCuts(pbs))
{
potentialHull = BSShapeConvexHull.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// use the GImpact shape if it is a prim that has some concaveness
if (potentialHull == null && BSParam.ShouldUseGImpactShapeForPrims && pbs != null && !pbs.SculptEntry)
{
potentialHull = BSShapeGImpact.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// If not any of the simple cases, just make a hull
if (potentialHull == null)
{
potentialHull = BSShapeHull.GetReference(PhysicsScene, false /* forceRebuild */, prim);
}
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape || potentialHull.ShapeType != prim.PhysShape.ShapeType ||
potentialHull.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialHull;
ret = true;
}
else
{
// The current shape on the prim is the correct one. We don't need the potential reference.
potentialHull.Dereference(PhysicsScene);
}
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1}", prim.LocalID, prim.PhysShape);
}
else
{
// Non-physical objects should be just meshes.
BSShape potentialMesh = BSShapeMesh.GetReference(PhysicsScene, false /* forceRebuld */, prim);
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape || potentialMesh.ShapeType != prim.PhysShape.ShapeType ||
potentialMesh.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialMesh;
ret = true;
}
else
{
// We don't need this reference to the mesh that is already being using.
potentialMesh.Dereference(PhysicsScene);
}
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1}", prim.LocalID, prim.PhysShape);
}
return ret;
}
public static BSShape GetReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
{
float lod;
UInt64 newMeshKey = BSShape.ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
BSShapeMesh retMesh;
lock (Meshes)
{
if (Meshes.TryGetValue(newMeshKey, out retMesh))
{
// The mesh has already been created. Return a new reference to same.
retMesh.IncrementReference();
}
else
{
retMesh = new BSShapeMesh(new BulletShape());
// An instance of this mesh has not been created. Build and remember same.
BulletShape newShape = retMesh.CreatePhysicalMesh(physicsScene, prim, newMeshKey, prim.BaseShape,
prim.Size, lod);
// Check to see if mesh was created (might require an asset).
newShape = VerifyMeshCreated(physicsScene, newShape, prim);
if (!newShape.isNativeShape || prim.AssetFailed())
{
// If a mesh was what was created, remember the built shape for later sharing.
// Also note that if meshing failed we put it in the mesh list as there is nothing else to do about the mesh.
Meshes.Add(newMeshKey, retMesh);
}
retMesh.physShapeInfo = newShape;
}
}
physicsScene.DetailLog("{0},BSShapeMesh,getReference,mesh={1},size={2},lod={3}", prim.LocalID, retMesh,
prim.Size, lod);
return retMesh;
}
// Create a body object in Bullet,
// Update prim.BSBody with the information about the new body if one is created.
// Returns 'true if an object was actually created.
// Called at taint-time.
bool CreateBody(bool forceRebuild, BSPhysObject prim, BulletWorld sim,
PhysicalDestructionCallback bodyCallback)
{
bool ret = false;
// the mesh, hull or native shape must have already been created in Bullet
bool mustRebuild = !prim.PhysBody.HasPhysicalBody;
// If there is an existing body, verify it's of an acceptable type.
// If not a solid object, body is a GhostObject. Otherwise a RigidBody.
if (!mustRebuild)
{
CollisionObjectTypes bodyType = (CollisionObjectTypes) PhysicsScene.PE.GetBodyType(prim.PhysBody);
if (prim.IsSolid && bodyType != CollisionObjectTypes.CO_RIGID_BODY ||
!prim.IsSolid && bodyType != CollisionObjectTypes.CO_GHOST_OBJECT)
{
// If the collisionObject is not the correct type for solidness, rebuild what's there
mustRebuild = true;
if (DDetail)
DetailLog("{0},BSShapeCollection.CreateBody,forceRebuildBecauseChangingBodyType,bodyType={1}",
prim.LocalID, bodyType);
}
}
if (mustRebuild || forceRebuild)
{
// Free any old body
DereferenceBody(prim.PhysBody, bodyCallback);
BulletBody aBody;
if (prim.IsSolid)
{
aBody = PhysicsScene.PE.CreateBodyFromShape(sim, prim.PhysShape.physShapeInfo, prim.LocalID,
prim.RawPosition, prim.RawOrientation);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateBody,rigid,body={1}", prim.LocalID, aBody);
}
else
{
aBody = PhysicsScene.PE.CreateGhostFromShape(sim, prim.PhysShape.physShapeInfo, prim.LocalID,
prim.RawPosition, prim.RawOrientation);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateBody,ghost,body={1}", prim.LocalID, aBody);
}
ReferenceBody(aBody);
prim.PhysBody = aBody;
ret = true;
}
return ret;
}
// Code that uses the mesher to create the index/vertices info for a trimesh shape.
// This is used by the passed 'makeShape' call to create the Bullet mesh shape.
// The actual build call is passed so this logic can be used by several of the shapes that use a
// simple mesh as their base shape.
public static BulletShape CreatePhysicalMeshShape(BSScene physicsScene, BSPhysObject prim, UInt64 newMeshKey,
PrimitiveBaseShape pbs, OMV.Vector3 size, float lod, CreateShapeCall makeShape)
{
BulletShape newShape = new BulletShape();
IMesh meshData;
lock (physicsScene.mesher)
{
meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod,
false, // say it is not physical so a bounding box is not built
false // do not cache the mesh and do not use previously built versions
);
}
if (meshData != null)
{
if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.Fetched)
{
// Release the fetched asset data once it has been used.
pbs.SculptData = new byte[0];
prim.PrimAssetState = BSPhysObject.PrimAssetCondition.Unknown;
}
int[] indices = meshData.getIndexListAsInt();
int realIndicesIndex = indices.Length;
float[] verticesAsFloats = meshData.getVertexListAsFloat();
if (BSParam.ShouldRemoveZeroWidthTriangles)
{
// Remove degenerate triangles. These are triangles with two of the vertices
// are the same. This is complicated by the problem that vertices are not
// made unique in sculpties so we have to compare the values in the vertex.
realIndicesIndex = 0;
for (int tri = 0; tri < indices.Length; tri += 3)
{
// Compute displacements into vertex array for each vertex of the triangle
int v1 = indices[tri + 0]*3;
int v2 = indices[tri + 1]*3;
int v3 = indices[tri + 2]*3;
// Check to see if any two of the vertices are the same
if (!((verticesAsFloats[v1 + 0] == verticesAsFloats[v2 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v2 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v2 + 2])
|| (verticesAsFloats[v2 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v2 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v2 + 2] == verticesAsFloats[v3 + 2])
|| (verticesAsFloats[v1 + 0] == verticesAsFloats[v3 + 0]
&& verticesAsFloats[v1 + 1] == verticesAsFloats[v3 + 1]
&& verticesAsFloats[v1 + 2] == verticesAsFloats[v3 + 2]))
)
{
// None of the vertices of the triangles are the same. This is a good triangle;
indices[realIndicesIndex + 0] = indices[tri + 0];
indices[realIndicesIndex + 1] = indices[tri + 1];
indices[realIndicesIndex + 2] = indices[tri + 2];
realIndicesIndex += 3;
}
}
}
physicsScene.DetailLog(
"{0},BSShapeMesh.CreatePhysicalMesh,key={1},origTri={2},realTri={3},numVerts={4}",
BSScene.DetailLogZero, newMeshKey.ToString("X"), indices.Length/3, realIndicesIndex/3,
verticesAsFloats.Length/3);
if (realIndicesIndex != 0)
{
newShape = makeShape(physicsScene.World, realIndicesIndex, indices, verticesAsFloats.Length/3,
verticesAsFloats);
}
else
{
// Force the asset condition to 'failed' so we won't try to keep fetching and processing this mesh.
prim.PrimAssetState = BSPhysObject.PrimAssetCondition.FailedMeshing;
physicsScene.Logger.DebugFormat("{0} All mesh triangles degenerate. Prim={1}", LogHeader,
UsefulPrimInfo(physicsScene, prim));
physicsScene.DetailLog("{0},BSShapeMesh.CreatePhysicalMesh,allDegenerate,key={1}", prim.LocalID,
newMeshKey);
}
}
newShape.shapeKey = newMeshKey;
return newShape;
}
// TODO!!! public virtual bool ShouldReportPropertyUpdates
// Called after a simulation step to post a collision with this object.
// Return 'true' if linkset processed the collision. 'false' says the linkset didn't have
// anything to add for the collision and it should be passed through normal processing.
// Default processing for a linkset.
public virtual bool HandleCollide(uint collidingWith, BSPhysObject collidee,
OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth)
{
bool ret = false;
// prims in the same linkset cannot collide with each other
BSPrimLinkable convCollidee = collidee as BSPrimLinkable;
if (convCollidee != null && (LinksetID == convCollidee.Linkset.LinksetID))
{
// By returning 'true', we tell the caller the collision has been 'handled' so it won't
// do anything about this collision and thus, effectivily, ignoring the collision.
ret = true;
}
else
{
// Not a collision between members of the linkset. Must be a real collision.
// So the linkset root can know if there is a collision anywhere in the linkset.
LinksetRoot.SomeCollisionSimulationStep = PhysicsScene.SimulationStep;
}
return ret;
}
public override BSShape GetReference(BSScene pPhysicsScene, BSPhysObject pPrim)
{
BSShape ret;
// If the underlying shape is native, the actual shape has not been build (waiting for asset)
// and we must create a copy of the native shape since they are never shared.
if (physShapeInfo.HasPhysicalShape && physShapeInfo.isNativeShape)
{
// TODO: decide when the native shapes should be freed. Check in Dereference?
ret = BSShapeNative.GetReference(pPhysicsScene, pPrim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_BOX);
}
else
{
// Another reference to this shape is just counted.
IncrementReference();
ret = this;
}
return ret;
}
public static BSShape GetReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
{
float lod;
UInt64 newMeshKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
physicsScene.DetailLog("{0},BSShapeConvexHull,getReference,newKey={1},size={2},lod={3}",
prim.LocalID, newMeshKey.ToString("X"), prim.Size, lod);
BSShapeConvexHull retConvexHull;
bool foundMesh = false;
lock (ConvexHulls) {
foundMesh = ConvexHulls.TryGetValue (newMeshKey, out retConvexHull);
}
if (foundMesh)
{
// The mesh has already been created. Return a new reference to same.
retConvexHull.IncrementReference();
}
else
{
retConvexHull = new BSShapeConvexHull(new BulletShape());
BulletShape convexShape;
// Get a handle to a mesh to buld the hull from
BSShape baseMesh = BSShapeMesh.GetReference(physicsScene, false /* forceRebuild */, prim);
if (baseMesh.physShapeInfo.isNativeShape)
{
// We get here if the mesh was not creatable. Could be waiting for an asset from the disk.
// In the short term, we return the native shape and a later ForceBodyShapeRebuild should
// get back to this code with a buildable mesh.
// TODO: not sure the temp native shape is freed when the mesh is rebuilt. When does this get freed?
convexShape = baseMesh.physShapeInfo;
}
else
{
convexShape = physicsScene.PE.BuildConvexHullShapeFromMesh(physicsScene.World, baseMesh.physShapeInfo);
convexShape.shapeKey = newMeshKey;
lock (ConvexHulls)
ConvexHulls.Add(convexShape.shapeKey, retConvexHull);
physicsScene.DetailLog("{0},BSShapeConvexHull.GetReference,addingNewlyCreatedShape,shape={1}",
BSScene.DetailLogZero, convexShape);
}
// Done with the base mesh
baseMesh.Dereference(physicsScene);
retConvexHull.physShapeInfo = convexShape;
}
return retConvexHull;
}
public BSActorSetTorque(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_torqueMotor = null;
m_physicsScene.DetailLog("{0},BSActorSetTorque,constructor", m_controllingPrim.LocalID);
}
public BSActorMoveToTarget(BSScene physicsScene, BSPhysObject pObj, string actorName)
: base(physicsScene, pObj, actorName)
{
m_targetMotor = null;
m_physicsScene.DetailLog("{0},BSActorMoveToTarget,constructor", m_controllingPrim.LocalID);
}