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, 24 insertions, 17 deletions

diff --git a/extern/bullet2/src/BulletSoftBody/btSoftRigidDynamicsWorld.cpp b/extern/bullet2/src/BulletSoftBody/btSoftRigidDynamicsWorld.cpp
index b363a2efbc1..a0069b95145 100644
--- a/extern/bullet2/src/BulletSoftBody/btSoftRigidDynamicsWorld.cpp
+++ b/extern/bullet2/src/BulletSoftBody/btSoftRigidDynamicsWorld.cpp
@@ -28,17 +28,17 @@ subject to the following restrictions:
 btSoftRigidDynamicsWorld::btSoftRigidDynamicsWorld(btDispatcher* dispatcher,btBroadphaseInterface* pairCache,btConstraintSolver* constraintSolver,btCollisionConfiguration* collisionConfiguration)
 :btDiscreteDynamicsWorld(dispatcher,pairCache,constraintSolver,collisionConfiguration)
 {
-m_drawFlags			=	fDrawFlags::Std;
-m_drawNodeTree		=	true;
-m_drawFaceTree		=	false;
-m_drawClusterTree	=	false;
-m_sbi.m_broadphase = pairCache;
-m_sbi.m_dispatcher = dispatcher;
-m_sbi.m_sparsesdf.Initialize();
-m_sbi.m_sparsesdf.Reset();
+	m_drawFlags			=	fDrawFlags::Std;
+	m_drawNodeTree		=	true;
+	m_drawFaceTree		=	false;
+	m_drawClusterTree	=	false;
+	m_sbi.m_broadphase = pairCache;
+	m_sbi.m_dispatcher = dispatcher;
+	m_sbi.m_sparsesdf.Initialize();
+	m_sbi.m_sparsesdf.Reset();
 
 }
-		
+
 btSoftRigidDynamicsWorld::~btSoftRigidDynamicsWorld()
 {
 
@@ -55,7 +55,7 @@ void	btSoftRigidDynamicsWorld::predictUnconstraintMotion(btScalar timeStep)
 		psb->predictMotion(timeStep);		
 	}
 }
-		
+
 void	btSoftRigidDynamicsWorld::internalSingleStepSimulation( btScalar timeStep)
 {
 	btDiscreteDynamicsWorld::internalSingleStepSimulation( timeStep );
@@ -63,6 +63,13 @@ void	btSoftRigidDynamicsWorld::internalSingleStepSimulation( btScalar timeStep)
 	///solve soft bodies constraints
 	solveSoftBodiesConstraints();
 
+	//self collisions
+	for ( int i=0;i<m_softBodies.size();i++)
+	{
+		btSoftBody*	psb=(btSoftBody*)m_softBodies[i];
+		psb->defaultCollisionHandler(psb);
+	}
+
 	///update soft bodies
 	updateSoftBodies();
 
@@ -71,7 +78,7 @@ void	btSoftRigidDynamicsWorld::internalSingleStepSimulation( btScalar timeStep)
 void	btSoftRigidDynamicsWorld::updateSoftBodies()
 {
 	BT_PROFILE("updateSoftBodies");
-	
+
 	for ( int i=0;i<m_softBodies.size();i++)
 	{
 		btSoftBody*	psb=(btSoftBody*)m_softBodies[i];
@@ -82,12 +89,12 @@ void	btSoftRigidDynamicsWorld::updateSoftBodies()
 void	btSoftRigidDynamicsWorld::solveSoftBodiesConstraints()
 {
 	BT_PROFILE("solveSoftConstraints");
-	
+
 	if(m_softBodies.size())
-		{
+	{
 		btSoftBody::solveClusters(m_softBodies);
-		}
-	
+	}
+
 	for(int i=0;i<m_softBodies.size();++i)
 	{
 		btSoftBody*	psb=(btSoftBody*)m_softBodies[i];
@@ -100,8 +107,8 @@ void	btSoftRigidDynamicsWorld::addSoftBody(btSoftBody* body)
 	m_softBodies.push_back(body);
 
 	btCollisionWorld::addCollisionObject(body,
-					btBroadphaseProxy::DefaultFilter,
-					btBroadphaseProxy::AllFilter);
+		btBroadphaseProxy::DefaultFilter,
+		btBroadphaseProxy::AllFilter);
 
 }