void ConvexShape::_updateCollision()
{
SAFE_DELETE( mPhysicsRep );
if ( !PHYSICSMGR )
return;
PhysicsCollision *colShape = PHYSICSMGR->createCollision();
// We need the points untransformed!
Vector<Point3F> rawPoints;
MatrixF xfm( getWorldTransform() );
xfm.setPosition( Point3F::Zero );
for ( U32 i=0; i < mGeometry.points.size(); i++ )
{
Point3F p = mGeometry.points[i];
xfm.mulP( p );
rawPoints.push_back( p );
}
// The convex generation from a point cloud
// can fail at times... give up in that case.
if ( !colShape->addConvex( mGeometry.points.address(),
mGeometry.points.size(),
MatrixF::Identity ) )
{
delete colShape;
return;
}
PhysicsWorld *world = PHYSICSMGR->getWorld( isServerObject() ? "server" : "client" );
mPhysicsRep = PHYSICSMGR->createBody();
mPhysicsRep->init( colShape, 0, 0, this, world );
mPhysicsRep->setTransform( getTransform() );
}
PhysicsCollision* CollisionComponent::buildColShapes()
{
PROFILE_SCOPE(CollisionComponent_buildColShapes);
PhysicsCollision *colShape = NULL;
U32 surfaceKey = 0;
TSShape* shape = mOwnerRenderInterface->getShape();
if (mCollisionType == VisibleMesh)
{
// Here we build triangle collision meshes from the
// visible detail levels.
// A negative subshape on the detail means we don't have geometry.
const TSShape::Detail &detail = shape->details[0];
if (detail.subShapeNum < 0)
return NULL;
// We don't try to optimize the triangles we're given
// and assume the art was created properly for collision.
ConcretePolyList polyList;
polyList.setTransform(&MatrixF::Identity, mOwner->getScale());
// Create the collision meshes.
S32 start = shape->subShapeFirstObject[detail.subShapeNum];
S32 end = start + shape->subShapeNumObjects[detail.subShapeNum];
for (S32 o = start; o < end; o++)
{
const TSShape::Object &object = shape->objects[o];
if (detail.objectDetailNum >= object.numMeshes)
continue;
// No mesh or no verts.... nothing to do.
TSMesh *mesh = shape->meshes[object.startMeshIndex + detail.objectDetailNum];
if (!mesh || mesh->mNumVerts == 0)
continue;
// Gather the mesh triangles.
polyList.clear();
mesh->buildPolyList(0, &polyList, surfaceKey, NULL);
// Create the collision shape if we haven't already.
if (!colShape)
colShape = PHYSICSMGR->createCollision();
// Get the object space mesh transform.
MatrixF localXfm;
shape->getNodeWorldTransform(object.nodeIndex, &localXfm);
colShape->addTriangleMesh(polyList.mVertexList.address(),
polyList.mVertexList.size(),
polyList.mIndexList.address(),
polyList.mIndexList.size() / 3,
localXfm);
}
// Return what we built... if anything.
return colShape;
}
else if (mCollisionType == CollisionMesh)
{
// Scan out the collision hulls...
//
// TODO: We need to support LOS collision for physics.
//
for (U32 i = 0; i < shape->details.size(); i++)
{
const TSShape::Detail &detail = shape->details[i];
const String &name = shape->names[detail.nameIndex];
// Is this a valid collision detail.
if (!dStrStartsWith(name, colisionMeshPrefix) || detail.subShapeNum < 0)
continue;
// Now go thru the meshes for this detail.
S32 start = shape->subShapeFirstObject[detail.subShapeNum];
S32 end = start + shape->subShapeNumObjects[detail.subShapeNum];
if (start >= end)
continue;
for (S32 o = start; o < end; o++)
{
const TSShape::Object &object = shape->objects[o];
const String &meshName = shape->names[object.nameIndex];
if (object.numMeshes <= detail.objectDetailNum)
continue;
// No mesh, a flat bounds, or no verts.... nothing to do.
TSMesh *mesh = shape->meshes[object.startMeshIndex + detail.objectDetailNum];
if (!mesh || mesh->getBounds().isEmpty() || mesh->mNumVerts == 0)
continue;
// We need the default mesh transform.
MatrixF localXfm;
shape->getNodeWorldTransform(object.nodeIndex, &localXfm);
// We have some sort of collision shape... so allocate it.
if (!colShape)
colShape = PHYSICSMGR->createCollision();
// Any other mesh name we assume as a generic convex hull.
//
// Collect the verts using the vertex polylist which will
// filter out duplicates. This is importaint as the convex
// generators can sometimes fail with duplicate verts.
//
VertexPolyList polyList;
MatrixF meshMat(localXfm);
Point3F t = meshMat.getPosition();
t.convolve(mOwner->getScale());
meshMat.setPosition(t);
polyList.setTransform(&MatrixF::Identity, mOwner->getScale());
mesh->buildPolyList(0, &polyList, surfaceKey, NULL);
colShape->addConvex(polyList.getVertexList().address(),
polyList.getVertexList().size(),
meshMat);
} // objects
} // details
}
return colShape;
}
