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, 5 insertions, 3 deletions

diff --git a/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btContinuousConvexCollision.cpp b/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btContinuousConvexCollision.cpp
index 6551cfb92fe..2f41b3c2757 100644
--- a/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btContinuousConvexCollision.cpp
+++ b/extern/bullet2/src/BulletCollision/NarrowPhaseCollision/btContinuousConvexCollision.cpp
@@ -135,6 +135,9 @@ bool	btContinuousConvexCollision::calcTimeOfImpact(
 			//btScalar clippedDist  = GEN_min(angularConservativeRadius,dist);
 			//btScalar clippedDist  = dist;
 			
+			//don't report time of impact for motion away from the contact normal (or causes minor penetration)
+			if ((projectedLinearVelocity+ maxAngularProjectedVelocity)<=SIMD_EPSILON)
+				return false;
 			
 			dLambda = dist / (projectedLinearVelocity+ maxAngularProjectedVelocity);
 
@@ -196,11 +199,10 @@ bool	btContinuousConvexCollision::calcTimeOfImpact(
 			}
 
 		}
-
-		//don't report time of impact for motion away from the contact normal (or causes minor penetration)
+	
 		if ((projectedLinearVelocity+ maxAngularProjectedVelocity)<=result.m_allowedPenetration)//SIMD_EPSILON)
 			return false;
-
+			
 		result.m_fraction = lambda;
 		result.m_normal = n;
 		result.m_hitPoint = c;