bullet: Streamline bundling, remove extraneous src/ folder

Document version and how to extract sources in thirdparty/README.md.
Drop unnecessary CMake and Premake files.
Simplify SCsub, drop unused one.

1 files changed, 488 insertions, 0 deletions

diff --git a/thirdparty/bullet/Bullet3Dynamics/b3CpuRigidBodyPipeline.cpp b/thirdparty/bullet/Bullet3Dynamics/b3CpuRigidBodyPipeline.cpp
new file mode 100644
index 0000000000..fbc84cc28d
--- /dev/null
+++ b/thirdparty/bullet/Bullet3Dynamics/b3CpuRigidBodyPipeline.cpp
@@ -0,0 +1,488 @@
+#include "b3CpuRigidBodyPipeline.h"
+
+#include "Bullet3Dynamics/shared/b3IntegrateTransforms.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3RigidBodyData.h"
+#include "Bullet3Collision/BroadPhaseCollision/b3DynamicBvhBroadphase.h"
+#include "Bullet3Collision/NarrowPhaseCollision/b3Config.h"
+#include "Bullet3Collision/NarrowPhaseCollision/b3CpuNarrowPhase.h"
+#include "Bullet3Collision/BroadPhaseCollision/shared/b3Aabb.h"
+#include "Bullet3Collision/NarrowPhaseCollision/shared/b3Collidable.h"
+#include "Bullet3Common/b3Vector3.h"
+#include "Bullet3Dynamics/shared/b3ContactConstraint4.h"
+#include "Bullet3Dynamics/shared/b3Inertia.h"
+
+
+struct b3CpuRigidBodyPipelineInternalData
+{
+	b3AlignedObjectArray<b3RigidBodyData> m_rigidBodies;
+	b3AlignedObjectArray<b3Inertia> m_inertias;
+	b3AlignedObjectArray<b3Aabb> m_aabbWorldSpace;
+
+	b3DynamicBvhBroadphase* m_bp;
+	b3CpuNarrowPhase* m_np;
+	b3Config m_config;
+};
+	
+
+b3CpuRigidBodyPipeline::b3CpuRigidBodyPipeline(class b3CpuNarrowPhase* narrowphase, struct b3DynamicBvhBroadphase* broadphaseDbvt, const b3Config& config)
+{
+	m_data = new b3CpuRigidBodyPipelineInternalData;
+	m_data->m_np = narrowphase;
+	m_data->m_bp = broadphaseDbvt;
+	m_data->m_config = config;
+}
+
+b3CpuRigidBodyPipeline::~b3CpuRigidBodyPipeline()
+{
+	delete m_data;
+}
+
+void b3CpuRigidBodyPipeline::updateAabbWorldSpace()
+{
+
+	for (int i=0;i<this->getNumBodies();i++)
+	{
+		b3RigidBodyData* body = &m_data->m_rigidBodies[i];
+		b3Float4 position = body->m_pos;
+		b3Quat	orientation = body->m_quat;
+
+		int collidableIndex = body->m_collidableIdx;
+		b3Collidable& collidable = m_data->m_np->getCollidableCpu(collidableIndex);
+		int shapeIndex = collidable.m_shapeIndex;
+		
+		if (shapeIndex>=0)
+		{
+			
+
+			b3Aabb localAabb = m_data->m_np->getLocalSpaceAabb(shapeIndex);
+			b3Aabb& worldAabb = m_data->m_aabbWorldSpace[i];
+			float margin=0.f;
+			b3TransformAabb2(localAabb.m_minVec,localAabb.m_maxVec,margin,position,orientation,&worldAabb.m_minVec,&worldAabb.m_maxVec);
+			m_data->m_bp->setAabb(i,worldAabb.m_minVec,worldAabb.m_maxVec,0);
+		}
+	}
+}
+
+void	b3CpuRigidBodyPipeline::computeOverlappingPairs()
+{
+	int numPairs = m_data->m_bp->getOverlappingPairCache()->getNumOverlappingPairs();
+	m_data->m_bp->calculateOverlappingPairs();
+	numPairs = m_data->m_bp->getOverlappingPairCache()->getNumOverlappingPairs();
+	printf("numPairs=%d\n",numPairs);
+}
+
+void b3CpuRigidBodyPipeline::computeContactPoints()
+{
+	
+	b3AlignedObjectArray<b3Int4>& pairs = m_data->m_bp->getOverlappingPairCache()->getOverlappingPairArray();
+	
+	m_data->m_np->computeContacts(pairs,m_data->m_aabbWorldSpace, m_data->m_rigidBodies);
+
+}
+void	b3CpuRigidBodyPipeline::stepSimulation(float deltaTime)
+{
+	
+	//update world space aabb's
+	updateAabbWorldSpace();
+
+	//compute overlapping pairs
+	computeOverlappingPairs();
+
+	//compute contacts
+	computeContactPoints();
+
+	//solve contacts
+	
+	//update transforms
+	integrate(deltaTime);
+	
+	
+}
+
+
+static	inline	float b3CalcRelVel(const b3Vector3& l0, const b3Vector3& l1, const b3Vector3& a0, const b3Vector3& a1, 
+					 const b3Vector3& linVel0, const b3Vector3& angVel0, const b3Vector3& linVel1, const b3Vector3& angVel1)
+{
+	return b3Dot(l0, linVel0) + b3Dot(a0, angVel0) + b3Dot(l1, linVel1) + b3Dot(a1, angVel1);
+}
+
+
+static	inline	void b3SetLinearAndAngular(const b3Vector3& n, const b3Vector3& r0, const b3Vector3& r1,
+							 b3Vector3& linear, b3Vector3& angular0, b3Vector3& angular1)
+{
+	linear = -n;
+	angular0 = -b3Cross(r0, n);
+	angular1 = b3Cross(r1, n);
+}
+
+
+
+static inline void b3SolveContact(b3ContactConstraint4& cs, 
+	const b3Vector3& posA, b3Vector3& linVelA, b3Vector3& angVelA, float invMassA, const b3Matrix3x3& invInertiaA,
+	const b3Vector3& posB, b3Vector3& linVelB, b3Vector3& angVelB, float invMassB, const b3Matrix3x3& invInertiaB, 
+	float maxRambdaDt[4], float minRambdaDt[4])
+{
+
+	b3Vector3 dLinVelA; dLinVelA.setZero();
+	b3Vector3 dAngVelA; dAngVelA.setZero();
+	b3Vector3 dLinVelB; dLinVelB.setZero();
+	b3Vector3 dAngVelB; dAngVelB.setZero();
+
+	for(int ic=0; ic<4; ic++)
+	{
+		//	dont necessary because this makes change to 0
+		if( cs.m_jacCoeffInv[ic] == 0.f ) continue;
+
+		{
+			b3Vector3 angular0, angular1, linear;
+			b3Vector3 r0 = cs.m_worldPos[ic] - (b3Vector3&)posA;
+			b3Vector3 r1 = cs.m_worldPos[ic] - (b3Vector3&)posB;
+			b3SetLinearAndAngular( (const b3Vector3 &)-cs.m_linear, (const b3Vector3 &)r0, (const b3Vector3 &)r1, linear, angular0, angular1 );
+
+			float rambdaDt = b3CalcRelVel((const b3Vector3 &)cs.m_linear,(const b3Vector3 &) -cs.m_linear, angular0, angular1,
+				linVelA, angVelA, linVelB, angVelB ) + cs.m_b[ic];
+			rambdaDt *= cs.m_jacCoeffInv[ic];
+
+			{
+				float prevSum = cs.m_appliedRambdaDt[ic];
+				float updated = prevSum;
+				updated += rambdaDt;
+				updated = b3Max( updated, minRambdaDt[ic] );
+				updated = b3Min( updated, maxRambdaDt[ic] );
+				rambdaDt = updated - prevSum;
+				cs.m_appliedRambdaDt[ic] = updated;
+			}
+
+			b3Vector3 linImp0 = invMassA*linear*rambdaDt;
+			b3Vector3 linImp1 = invMassB*(-linear)*rambdaDt;
+			b3Vector3 angImp0 = (invInertiaA* angular0)*rambdaDt;
+			b3Vector3 angImp1 = (invInertiaB* angular1)*rambdaDt;
+#ifdef _WIN32
+            b3Assert(_finite(linImp0.getX()));
+			b3Assert(_finite(linImp1.getX()));
+#endif
+			{
+				linVelA += linImp0;
+				angVelA += angImp0;
+				linVelB += linImp1;
+				angVelB += angImp1;
+			}
+		}
+	}
+
+
+}
+
+
+
+
+
+static inline void b3SolveFriction(b3ContactConstraint4& cs, 
+		const b3Vector3& posA, b3Vector3& linVelA, b3Vector3& angVelA, float invMassA, const b3Matrix3x3& invInertiaA,
+		const b3Vector3& posB, b3Vector3& linVelB, b3Vector3& angVelB, float invMassB, const b3Matrix3x3& invInertiaB, 
+		float maxRambdaDt[4], float minRambdaDt[4])
+{
+
+	if( cs.m_fJacCoeffInv[0] == 0 && cs.m_fJacCoeffInv[0] == 0 ) return;
+	const b3Vector3& center = (const b3Vector3&)cs.m_center;
+
+	b3Vector3 n = -(const b3Vector3&)cs.m_linear;
+
+	b3Vector3 tangent[2];
+
+	b3PlaneSpace1 (n, tangent[0],tangent[1]);
+
+	b3Vector3 angular0, angular1, linear;
+	b3Vector3 r0 = center - posA;
+	b3Vector3 r1 = center - posB;
+	for(int i=0; i<2; i++)
+	{
+		b3SetLinearAndAngular( tangent[i], r0, r1, linear, angular0, angular1 );
+		float rambdaDt = b3CalcRelVel(linear, -linear, angular0, angular1,
+			linVelA, angVelA, linVelB, angVelB );
+		rambdaDt *= cs.m_fJacCoeffInv[i];
+
+			{
+				float prevSum = cs.m_fAppliedRambdaDt[i];
+				float updated = prevSum;
+				updated += rambdaDt;
+				updated = b3Max( updated, minRambdaDt[i] );
+				updated = b3Min( updated, maxRambdaDt[i] );
+				rambdaDt = updated - prevSum;
+				cs.m_fAppliedRambdaDt[i] = updated;
+			}
+
+		b3Vector3 linImp0 = invMassA*linear*rambdaDt;
+		b3Vector3 linImp1 = invMassB*(-linear)*rambdaDt;
+		b3Vector3 angImp0 = (invInertiaA* angular0)*rambdaDt;
+		b3Vector3 angImp1 = (invInertiaB* angular1)*rambdaDt;
+#ifdef _WIN32
+		b3Assert(_finite(linImp0.getX()));
+		b3Assert(_finite(linImp1.getX()));
+#endif
+		linVelA += linImp0;
+		angVelA += angImp0;
+		linVelB += linImp1;
+		angVelB += angImp1;
+	}
+
+	{	//	angular damping for point constraint
+		b3Vector3 ab = ( posB - posA ).normalized();
+		b3Vector3 ac = ( center - posA ).normalized();
+		if( b3Dot( ab, ac ) > 0.95f || (invMassA == 0.f || invMassB == 0.f))
+		{
+			float angNA = b3Dot( n, angVelA );
+			float angNB = b3Dot( n, angVelB );
+
+			angVelA -= (angNA*0.1f)*n;
+			angVelB -= (angNB*0.1f)*n;
+		}
+	}
+
+}
+
+
+
+
+
+struct b3SolveTask// : public ThreadPool::Task
+{
+	b3SolveTask(b3AlignedObjectArray<b3RigidBodyData>& bodies,  
+				b3AlignedObjectArray<b3Inertia>& shapes, 
+				b3AlignedObjectArray<b3ContactConstraint4>& constraints,
+				int start, int nConstraints,
+				int maxNumBatches,
+				b3AlignedObjectArray<int>* wgUsedBodies, int curWgidx
+				)
+		: m_bodies( bodies ), m_shapes( shapes ), m_constraints( constraints ), 
+		m_wgUsedBodies(wgUsedBodies),m_curWgidx(curWgidx),
+m_start( start ), 
+	m_nConstraints( nConstraints ),
+	m_solveFriction( true ),
+	m_maxNumBatches(maxNumBatches)
+	{}
+
+	unsigned short int getType(){ return 0; }
+
+	void run(int tIdx)
+	{
+		b3AlignedObjectArray<int> usedBodies;
+		//printf("run..............\n");
+
+		
+		for (int bb=0;bb<m_maxNumBatches;bb++)
+		{
+			usedBodies.resize(0);
+			for(int ic=m_nConstraints-1; ic>=0; ic--)
+			//for(int ic=0; ic<m_nConstraints; ic++)
+			{
+				
+				int i = m_start + ic;
+				if (m_constraints[i].m_batchIdx != bb)
+					continue;
+
+				float frictionCoeff = b3GetFrictionCoeff(&m_constraints[i]);
+				int aIdx = (int)m_constraints[i].m_bodyA;
+				int bIdx = (int)m_constraints[i].m_bodyB;
+				//int localBatch = m_constraints[i].m_batchIdx;
+				b3RigidBodyData& bodyA = m_bodies[aIdx];
+				b3RigidBodyData& bodyB = m_bodies[bIdx];
+
+#if 0
+				if ((bodyA.m_invMass) && (bodyB.m_invMass))
+				{
+				//	printf("aIdx=%d, bIdx=%d\n", aIdx,bIdx);
+				}
+				if (bIdx==10)
+				{
+					//printf("ic(b)=%d, localBatch=%d\n",ic,localBatch);
+				}
+#endif
+				if (aIdx==10)
+				{
+					//printf("ic(a)=%d, localBatch=%d\n",ic,localBatch);
+				}
+				if (usedBodies.size()<(aIdx+1))
+				{
+					usedBodies.resize(aIdx+1,0);
+				}
+		
+				if (usedBodies.size()<(bIdx+1))
+				{
+					usedBodies.resize(bIdx+1,0);
+				}
+
+				if (bodyA.m_invMass)
+				{
+					b3Assert(usedBodies[aIdx]==0);
+					usedBodies[aIdx]++;
+				}
+				
+				if (bodyB.m_invMass)
+				{
+					b3Assert(usedBodies[bIdx]==0);
+					usedBodies[bIdx]++;
+				}
+				
+
+				if( !m_solveFriction )
+				{
+					float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
+					float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
+
+					b3SolveContact( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass, (const b3Matrix3x3 &)m_shapes[aIdx].m_invInertiaWorld, 
+							(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass, (const b3Matrix3x3 &)m_shapes[bIdx].m_invInertiaWorld,
+						maxRambdaDt, minRambdaDt );
+
+				}
+				else
+				{
+					float maxRambdaDt[4] = {FLT_MAX,FLT_MAX,FLT_MAX,FLT_MAX};
+					float minRambdaDt[4] = {0.f,0.f,0.f,0.f};
+
+					float sum = 0;
+					for(int j=0; j<4; j++)
+					{
+						sum +=m_constraints[i].m_appliedRambdaDt[j];
+					}
+					frictionCoeff = 0.7f;
+					for(int j=0; j<4; j++)
+					{
+						maxRambdaDt[j] = frictionCoeff*sum;
+						minRambdaDt[j] = -maxRambdaDt[j];
+					}
+
+				b3SolveFriction( m_constraints[i], (b3Vector3&)bodyA.m_pos, (b3Vector3&)bodyA.m_linVel, (b3Vector3&)bodyA.m_angVel, bodyA.m_invMass,(const b3Matrix3x3 &) m_shapes[aIdx].m_invInertiaWorld, 
+						(b3Vector3&)bodyB.m_pos, (b3Vector3&)bodyB.m_linVel, (b3Vector3&)bodyB.m_angVel, bodyB.m_invMass,(const b3Matrix3x3 &) m_shapes[bIdx].m_invInertiaWorld,
+						maxRambdaDt, minRambdaDt );
+			
+				}
+			}
+
+			if (m_wgUsedBodies)
+			{
+				if (m_wgUsedBodies[m_curWgidx].size()<usedBodies.size())
+				{
+					m_wgUsedBodies[m_curWgidx].resize(usedBodies.size());
+				}
+				for (int i=0;i<usedBodies.size();i++)
+				{
+					if (usedBodies[i])
+					{
+						//printf("cell %d uses body %d\n", m_curWgidx,i);
+						m_wgUsedBodies[m_curWgidx][i]=1;
+					}
+				}
+			}
+
+		}
+
+
+		
+	}
+
+	b3AlignedObjectArray<b3RigidBodyData>& m_bodies;
+	b3AlignedObjectArray<b3Inertia>& m_shapes;
+	b3AlignedObjectArray<b3ContactConstraint4>& m_constraints;
+	b3AlignedObjectArray<int>* m_wgUsedBodies;
+	int m_curWgidx;
+	int m_start;
+	int m_nConstraints;
+	bool m_solveFriction;
+	int m_maxNumBatches;
+};
+
+void b3CpuRigidBodyPipeline::solveContactConstraints()
+{
+	int m_nIterations = 4;
+
+	b3AlignedObjectArray<b3ContactConstraint4> contactConstraints;
+//	const b3AlignedObjectArray<b3Contact4Data>& contacts = m_data->m_np->getContacts();
+	int n = contactConstraints.size();
+	//convert contacts...
+
+
+	
+	int maxNumBatches = 250;
+
+	for(int iter=0; iter<m_nIterations; iter++)
+	{
+		b3SolveTask task( m_data->m_rigidBodies, m_data->m_inertias, contactConstraints, 0, n ,maxNumBatches,0,0);
+		task.m_solveFriction = false;
+		task.run(0);
+	}
+
+	for(int iter=0; iter<m_nIterations; iter++)
+	{
+		b3SolveTask task( m_data->m_rigidBodies, m_data->m_inertias, contactConstraints, 0, n ,maxNumBatches,0,0);
+		task.m_solveFriction = true;
+		task.run(0);
+	}
+}
+
+void b3CpuRigidBodyPipeline::integrate(float deltaTime)
+{
+	float angDamping=0.f;
+	b3Vector3 gravityAcceleration=b3MakeVector3(0,-9,0);
+
+	//integrate transforms (external forces/gravity should be moved into constraint solver)
+	for (int i=0;i<m_data->m_rigidBodies.size();i++)
+	{
+		b3IntegrateTransform(&m_data->m_rigidBodies[i],deltaTime,angDamping,gravityAcceleration);
+	}
+
+}
+
+int		b3CpuRigidBodyPipeline::registerPhysicsInstance(float mass, const float* position, const float* orientation, int collidableIndex, int userData)
+{
+	b3RigidBodyData body;
+	int bodyIndex = m_data->m_rigidBodies.size();
+	body.m_invMass = mass ? 1.f/mass : 0.f;
+	body.m_angVel.setValue(0,0,0);
+	body.m_collidableIdx = collidableIndex;
+	body.m_frictionCoeff = 0.3f;
+	body.m_linVel.setValue(0,0,0);
+	body.m_pos.setValue(position[0],position[1],position[2]);
+	body.m_quat.setValue(orientation[0],orientation[1],orientation[2],orientation[3]);
+	body.m_restituitionCoeff = 0.f;
+
+	m_data->m_rigidBodies.push_back(body);
+
+	
+	if (collidableIndex>=0)
+	{
+		b3Aabb& worldAabb = m_data->m_aabbWorldSpace.expand();
+
+		b3Aabb localAabb = m_data->m_np->getLocalSpaceAabb(collidableIndex);
+		b3Vector3 localAabbMin=b3MakeVector3(localAabb.m_min[0],localAabb.m_min[1],localAabb.m_min[2]);
+		b3Vector3 localAabbMax=b3MakeVector3(localAabb.m_max[0],localAabb.m_max[1],localAabb.m_max[2]);
+		
+		b3Scalar margin = 0.01f;
+		b3Transform t;
+		t.setIdentity();
+		t.setOrigin(b3MakeVector3(position[0],position[1],position[2]));
+		t.setRotation(b3Quaternion(orientation[0],orientation[1],orientation[2],orientation[3]));
+		b3TransformAabb(localAabbMin,localAabbMax, margin,t,worldAabb.m_minVec,worldAabb.m_maxVec);
+
+		m_data->m_bp->createProxy(worldAabb.m_minVec,worldAabb.m_maxVec,bodyIndex,0,1,1);
+//		b3Vector3 aabbMin,aabbMax;
+	//	m_data->m_bp->getAabb(bodyIndex,aabbMin,aabbMax);
+
+	} else
+	{
+		b3Error("registerPhysicsInstance using invalid collidableIndex\n");
+	}
+
+	return bodyIndex;
+}
+
+
+const struct b3RigidBodyData* b3CpuRigidBodyPipeline::getBodyBuffer() const
+{
+	return m_data->m_rigidBodies.size() ? &m_data->m_rigidBodies[0] : 0;
+}
+
+int	b3CpuRigidBodyPipeline::getNumBodies() const
+{
+	return m_data->m_rigidBodies.size();
+}