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, 15 insertions, 5 deletions

diff --git a/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h b/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
index c122eb865e8..0b3c734d1d7 100644
--- a/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
+++ b/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
@@ -24,7 +24,7 @@ subject to the following restrictions:
 
 struct btCollisionResult;
 
-///contact breaking and merging threshold
+///maximum contact breaking and merging threshold
 extern btScalar gContactBreakingThreshold;
 
 typedef bool (*ContactDestroyedCallback)(void* userPersistentData);
@@ -54,6 +54,9 @@ ATTRIBUTE_ALIGNED16( class) btPersistentManifold
 	void* m_body1;
 	int	m_cachedPoints;
 
+	btScalar	m_contactBreakingThreshold;
+	btScalar	m_contactProcessingThreshold;
+
 	
 	/// sort cached points so most isolated points come first
 	int	sortCachedPoints(const btManifoldPoint& pt);
@@ -68,10 +71,12 @@ public:
 
 	btPersistentManifold();
 
-	btPersistentManifold(void* body0,void* body1,int bla)
-		: m_body0(body0),m_body1(body1),m_cachedPoints(0)
+	btPersistentManifold(void* body0,void* body1,int , btScalar contactBreakingThreshold,btScalar contactProcessingThreshold)
+		: m_body0(body0),m_body1(body1),m_cachedPoints(0),
+		m_contactBreakingThreshold(contactBreakingThreshold),
+		m_contactProcessingThreshold(contactProcessingThreshold)
 	{
-		(void)bla;
+		
 	}
 
 	SIMD_FORCE_INLINE void* getBody0() { return m_body0;}
@@ -106,8 +111,13 @@ public:
 		return m_pointCache[index];
 	}
 
-	/// todo: get this margin from the current physics / collision environment
+	///@todo: get this margin from the current physics / collision environment
 	btScalar	getContactBreakingThreshold() const;
+
+	btScalar	getContactProcessingThreshold() const
+	{
+		return m_contactProcessingThreshold;
+	}
 	
 	int getCacheEntry(const btManifoldPoint& newPoint) const;