1 files changed, 134 insertions, 0 deletions
diff --git a/thirdparty/bullet/BulletSoftBody/btSoftBodyRigidBodyCollisionConfiguration.cpp b/thirdparty/bullet/BulletSoftBody/btSoftBodyRigidBodyCollisionConfiguration.cpp
new file mode 100644
index 0000000000..f5a67f6d89
--- /dev/null
+++ b/thirdparty/bullet/BulletSoftBody/btSoftBodyRigidBodyCollisionConfiguration.cpp
@@ -0,0 +1,134 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "btSoftBodyRigidBodyCollisionConfiguration.h"
+#include "btSoftRigidCollisionAlgorithm.h"
+#include "btSoftBodyConcaveCollisionAlgorithm.h"
+#include "btSoftSoftCollisionAlgorithm.h"
+
+#include "LinearMath/btPoolAllocator.h"
+
+#define ENABLE_SOFTBODY_CONCAVE_COLLISIONS 1
+
+btSoftBodyRigidBodyCollisionConfiguration::btSoftBodyRigidBodyCollisionConfiguration(const btDefaultCollisionConstructionInfo& constructionInfo)
+:btDefaultCollisionConfiguration(constructionInfo)
+{
+	void* mem;
+
+	mem = btAlignedAlloc(sizeof(btSoftSoftCollisionAlgorithm::CreateFunc),16);
+	m_softSoftCreateFunc = new(mem) btSoftSoftCollisionAlgorithm::CreateFunc;
+
+	mem = btAlignedAlloc(sizeof(btSoftRigidCollisionAlgorithm::CreateFunc),16);
+	m_softRigidConvexCreateFunc = new(mem) btSoftRigidCollisionAlgorithm::CreateFunc;
+
+	mem = btAlignedAlloc(sizeof(btSoftRigidCollisionAlgorithm::CreateFunc),16);
+	m_swappedSoftRigidConvexCreateFunc = new(mem) btSoftRigidCollisionAlgorithm::CreateFunc;
+	m_swappedSoftRigidConvexCreateFunc->m_swapped=true;
+
+#ifdef ENABLE_SOFTBODY_CONCAVE_COLLISIONS
+	mem = btAlignedAlloc(sizeof(btSoftBodyConcaveCollisionAlgorithm::CreateFunc),16);
+	m_softRigidConcaveCreateFunc = new(mem) btSoftBodyConcaveCollisionAlgorithm::CreateFunc;
+
+	mem = btAlignedAlloc(sizeof(btSoftBodyConcaveCollisionAlgorithm::CreateFunc),16);
+	m_swappedSoftRigidConcaveCreateFunc = new(mem) btSoftBodyConcaveCollisionAlgorithm::SwappedCreateFunc;
+	m_swappedSoftRigidConcaveCreateFunc->m_swapped=true;
+#endif
+
+	//replace pool by a new one, with potential larger size
+
+	if (m_ownsCollisionAlgorithmPool && m_collisionAlgorithmPool)
+	{
+		int curElemSize = m_collisionAlgorithmPool->getElementSize();
+		///calculate maximum element size, big enough to fit any collision algorithm in the memory pool
+
+
+		int maxSize0 = sizeof(btSoftSoftCollisionAlgorithm);
+		int maxSize1 = sizeof(btSoftRigidCollisionAlgorithm);
+		int maxSize2 = sizeof(btSoftBodyConcaveCollisionAlgorithm);
+
+		int	collisionAlgorithmMaxElementSize = btMax(maxSize0,maxSize1);
+		collisionAlgorithmMaxElementSize = btMax(collisionAlgorithmMaxElementSize,maxSize2);
+		
+		if (collisionAlgorithmMaxElementSize > curElemSize)
+		{
+			m_collisionAlgorithmPool->~btPoolAllocator();
+			btAlignedFree(m_collisionAlgorithmPool);
+			void* mem = btAlignedAlloc(sizeof(btPoolAllocator),16);
+			m_collisionAlgorithmPool = new(mem) btPoolAllocator(collisionAlgorithmMaxElementSize,constructionInfo.m_defaultMaxCollisionAlgorithmPoolSize);
+		}
+	}
+
+}
+
+btSoftBodyRigidBodyCollisionConfiguration::~btSoftBodyRigidBodyCollisionConfiguration()
+{
+	m_softSoftCreateFunc->~btCollisionAlgorithmCreateFunc();
+	btAlignedFree(	m_softSoftCreateFunc);
+
+	m_softRigidConvexCreateFunc->~btCollisionAlgorithmCreateFunc();
+	btAlignedFree(	m_softRigidConvexCreateFunc);
+
+	m_swappedSoftRigidConvexCreateFunc->~btCollisionAlgorithmCreateFunc();
+	btAlignedFree(	m_swappedSoftRigidConvexCreateFunc);
+
+#ifdef ENABLE_SOFTBODY_CONCAVE_COLLISIONS
+	m_softRigidConcaveCreateFunc->~btCollisionAlgorithmCreateFunc();
+	btAlignedFree(	m_softRigidConcaveCreateFunc);
+
+	m_swappedSoftRigidConcaveCreateFunc->~btCollisionAlgorithmCreateFunc();
+	btAlignedFree(	m_swappedSoftRigidConcaveCreateFunc);
+#endif
+}
+
+///creation of soft-soft and soft-rigid, and otherwise fallback to base class implementation
+btCollisionAlgorithmCreateFunc* btSoftBodyRigidBodyCollisionConfiguration::getCollisionAlgorithmCreateFunc(int proxyType0,int proxyType1)
+{
+
+	///try to handle the softbody interactions first
+
+	if ((proxyType0 == SOFTBODY_SHAPE_PROXYTYPE  ) && (proxyType1==SOFTBODY_SHAPE_PROXYTYPE))
+	{
+		return	m_softSoftCreateFunc;
+	}
+
+	///softbody versus convex
+	if (proxyType0 == SOFTBODY_SHAPE_PROXYTYPE  && btBroadphaseProxy::isConvex(proxyType1))
+	{
+		return	m_softRigidConvexCreateFunc;
+	}
+
+	///convex versus soft body
+	if (btBroadphaseProxy::isConvex(proxyType0) && proxyType1 == SOFTBODY_SHAPE_PROXYTYPE )
+	{
+		return	m_swappedSoftRigidConvexCreateFunc;
+	}
+
+#ifdef ENABLE_SOFTBODY_CONCAVE_COLLISIONS
+	///softbody versus convex
+	if (proxyType0 == SOFTBODY_SHAPE_PROXYTYPE  && btBroadphaseProxy::isConcave(proxyType1))
+	{
+		return	m_softRigidConcaveCreateFunc;
+	}
+
+	///convex versus soft body
+	if (btBroadphaseProxy::isConcave(proxyType0) && proxyType1 == SOFTBODY_SHAPE_PROXYTYPE )
+	{
+		return	m_swappedSoftRigidConcaveCreateFunc;
+	}
+#endif
+
+	///fallback to the regular rigid collision shape
+	return btDefaultCollisionConfiguration::getCollisionAlgorithmCreateFunc(proxyType0,proxyType1);
+}