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, 45 insertions, 13 deletions

diff --git a/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.cpp b/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.cpp
index 819f6f7f97d..68ff5e2d7bb 100644
--- a/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.cpp
+++ b/extern/bullet2/src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.cpp
@@ -26,6 +26,7 @@ m_bvh(0),
 m_useQuantizedAabbCompression(useQuantizedAabbCompression),
 m_ownsBvh(false)
 {
+	m_shapeType = TRIANGLE_MESH_SHAPE_PROXYTYPE;
 	//construct bvh from meshInterface
 #ifndef DISABLE_BVH
 
@@ -57,6 +58,7 @@ m_bvh(0),
 m_useQuantizedAabbCompression(useQuantizedAabbCompression),
 m_ownsBvh(false)
 {
+	m_shapeType = TRIANGLE_MESH_SHAPE_PROXYTYPE;
 	//construct bvh from meshInterface
 #ifndef DISABLE_BVH
 
@@ -141,10 +143,19 @@ void	btBvhTriangleMeshShape::performRaycast (btTriangleCallback* callback, const
 			for (int j=2;j>=0;j--)
 			{
 				int graphicsindex = indicestype==PHY_SHORT?((unsigned short*)gfxbase)[j]:gfxbase[j];
-
-				btScalar* graphicsbase = (btScalar*)(vertexbase+graphicsindex*stride);
-
-				m_triangle[j] = btVector3(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ());		
+				
+				if (type == PHY_FLOAT)
+				{
+					float* graphicsbase = (float*)(vertexbase+graphicsindex*stride);
+					
+					m_triangle[j] = btVector3(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ());		
+				}
+				else
+				{
+					double* graphicsbase = (double*)(vertexbase+graphicsindex*stride);
+					
+					m_triangle[j] = btVector3(btScalar(graphicsbase[0])*meshScaling.getX(),btScalar(graphicsbase[1])*meshScaling.getY(),btScalar(graphicsbase[2])*meshScaling.getZ());		
+				}
 			}
 
 			/* Perform ray vs. triangle collision here */
@@ -202,9 +213,18 @@ void	btBvhTriangleMeshShape::performConvexcast (btTriangleCallback* callback, co
 			{
 				int graphicsindex = indicestype==PHY_SHORT?((unsigned short*)gfxbase)[j]:gfxbase[j];
 
-				btScalar* graphicsbase = (btScalar*)(vertexbase+graphicsindex*stride);
-
-				m_triangle[j] = btVector3(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ());		
+				if (type == PHY_FLOAT)
+				{
+					float* graphicsbase = (float*)(vertexbase+graphicsindex*stride);
+
+					m_triangle[j] = btVector3(graphicsbase[0]*meshScaling.getX(),graphicsbase[1]*meshScaling.getY(),graphicsbase[2]*meshScaling.getZ());		
+				}
+				else
+				{
+					double* graphicsbase = (double*)(vertexbase+graphicsindex*stride);
+					
+					m_triangle[j] = btVector3(btScalar(graphicsbase[0])*meshScaling.getX(),btScalar(graphicsbase[1])*meshScaling.getY(),btScalar(graphicsbase[2])*meshScaling.getZ());		
+				}
 			}
 
 			/* Perform ray vs. triangle collision here */
@@ -279,12 +299,24 @@ void	btBvhTriangleMeshShape::processAllTriangles(btTriangleCallback* callback,co
 #ifdef DEBUG_TRIANGLE_MESH
 				printf("%d ,",graphicsindex);
 #endif //DEBUG_TRIANGLE_MESH
-				btScalar* graphicsbase = (btScalar*)(vertexbase+graphicsindex*stride);
-
-				m_triangle[j] = btVector3(
-					graphicsbase[0]*meshScaling.getX(),
-					graphicsbase[1]*meshScaling.getY(),
-					graphicsbase[2]*meshScaling.getZ());
+				if (type == PHY_FLOAT)
+				{
+					float* graphicsbase = (float*)(vertexbase+graphicsindex*stride);
+					
+					m_triangle[j] = btVector3(
+																		graphicsbase[0]*meshScaling.getX(),
+																		graphicsbase[1]*meshScaling.getY(),
+																		graphicsbase[2]*meshScaling.getZ());
+				}
+				else
+				{
+					double* graphicsbase = (double*)(vertexbase+graphicsindex*stride);
+
+					m_triangle[j] = btVector3(
+						btScalar(graphicsbase[0])*meshScaling.getX(),
+						btScalar(graphicsbase[1])*meshScaling.getY(),
+						btScalar(graphicsbase[2])*meshScaling.getZ());
+				}
 #ifdef DEBUG_TRIANGLE_MESH
 				printf("triangle vertices:%f,%f,%f\n",triangle[j].x(),triangle[j].y(),triangle[j].z());
 #endif //DEBUG_TRIANGLE_MESH