Upgraded to Bullet 2.74. The upgrade introduced a few bugs, which need to be fixed before Blender 2.49.

In particular, the Bullet vehicle seems broken, and some soft-body demos don't work.
No new features or benefits are added yet, but a few improvements are planned before Blender 2.49 release.

Please update the build systems, and add those 3 files:
extern/bullet2/src/BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.cpp
extern/bullet2/src/BulletCollision/CollisionDispatch/btGhostObject.cpp
extern/bullet2/src/BulletCollision/CollisionShapes/btConvexPointCloudShape.cpp

I'll watch the Blender mailing list, in case this commit causes some issues.

1 files changed, 6 insertions, 4 deletions

diff --git a/extern/bullet2/src/BulletCollision/CollisionShapes/btMinkowskiSumShape.cpp b/extern/bullet2/src/BulletCollision/CollisionShapes/btMinkowskiSumShape.cpp
index 8f893ac98aa..b107b0bea6e 100644
--- a/extern/bullet2/src/BulletCollision/CollisionShapes/btMinkowskiSumShape.cpp
+++ b/extern/bullet2/src/BulletCollision/CollisionShapes/btMinkowskiSumShape.cpp
@@ -17,23 +17,25 @@ subject to the following restrictions:
 
 
 btMinkowskiSumShape::btMinkowskiSumShape(const btConvexShape* shapeA,const btConvexShape* shapeB)
-:m_shapeA(shapeA),
+: btConvexInternalShape (),
+m_shapeA(shapeA),
 m_shapeB(shapeB)
 {
+	m_shapeType = MINKOWSKI_DIFFERENCE_SHAPE_PROXYTYPE;
 	m_transA.setIdentity();
 	m_transB.setIdentity();
 }
 
 btVector3 btMinkowskiSumShape::localGetSupportingVertexWithoutMargin(const btVector3& vec)const
 {
-	btVector3 supVertexA = m_transA(m_shapeA->localGetSupportingVertexWithoutMargin(-vec*m_transA.getBasis()));
-	btVector3 supVertexB = m_transB(m_shapeB->localGetSupportingVertexWithoutMargin(vec*m_transB.getBasis()));
+	btVector3 supVertexA = m_transA(m_shapeA->localGetSupportingVertexWithoutMargin(vec*m_transA.getBasis()));
+	btVector3 supVertexB = m_transB(m_shapeB->localGetSupportingVertexWithoutMargin(-vec*m_transB.getBasis()));
 	return  supVertexA - supVertexB;
 }
 
 void	btMinkowskiSumShape::batchedUnitVectorGetSupportingVertexWithoutMargin(const btVector3* vectors,btVector3* supportVerticesOut,int numVectors) const
 {
-	//todo: could make recursive use of batching. probably this shape is not used frequently.
+	///@todo: could make recursive use of batching. probably this shape is not used frequently.
 	for (int i=0;i<numVectors;i++)
 	{
 		supportVerticesOut[i] = localGetSupportingVertexWithoutMargin(vectors[i]);