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fairly large refactoring of dispatcher/simulation island management, to allow for parallel simulation.

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This commit is contained in:
ejcoumans
2006-07-01 00:22:15 +00:00
parent 8e91b0cd68
commit 2d80bae6e3
16 changed files with 424 additions and 283 deletions
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117
Bullet/CollisionDispatch/CollisionDispatcher.cpp
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@@ -28,34 +28,7 @@ subject to the following restrictions:
int gNumManifold = 0;
void CollisionDispatcher::FindUnions()
{
if (m_useIslands)
{
for (int i=0;i<GetNumManifolds();i++)
{
const PersistentManifold* manifold = this->GetManifoldByIndexInternal(i);
//static objects (invmass 0.f) don't merge !
const CollisionObject* colObj0 = static_cast<const CollisionObject*>(manifold->GetBody0());
const CollisionObject* colObj1 = static_cast<const CollisionObject*>(manifold->GetBody1());
if (colObj0 && colObj1 && NeedsResponse(*colObj0,*colObj1))
{
if (((colObj0) && ((colObj0)->mergesSimulationIslands())) &&
((colObj1) && ((colObj1)->mergesSimulationIslands())))
{
m_unionFind.unite((colObj0)->m_islandTag1,
(colObj1)->m_islandTag1);
}
}
}
}
}
@@ -122,96 +95,6 @@ void CollisionDispatcher::ReleaseManifold(PersistentManifold* manifold)
}
//
// todo: this is random access, it can be walked 'cache friendly'!
//
void CollisionDispatcher::BuildAndProcessIslands(CollisionObjectArray& collisionObjects, IslandCallback* callback)
{
int numBodies = collisionObjects.size();
for (int islandId=0;islandId<numBodies;islandId++)
{
std::vector<PersistentManifold*> islandmanifold;
//int numSleeping = 0;
bool allSleeping = true;
int i;
for (i=0;i<numBodies;i++)
{
CollisionObject* colObj0 = collisionObjects[i];
if (colObj0->m_islandTag1 == islandId)
{
if (colObj0->GetActivationState()== ACTIVE_TAG)
{
allSleeping = false;
}
if (colObj0->GetActivationState()== DISABLE_DEACTIVATION)
{
allSleeping = false;
}
}
}
for (i=0;i<GetNumManifolds();i++)
{
PersistentManifold* manifold = this->GetManifoldByIndexInternal(i);
//filtering for response
CollisionObject* colObj0 = static_cast<CollisionObject*>(manifold->GetBody0());
CollisionObject* colObj1 = static_cast<CollisionObject*>(manifold->GetBody1());
{
if (((colObj0) && (colObj0)->m_islandTag1 == (islandId)) ||
((colObj1) && (colObj1)->m_islandTag1 == (islandId)))
{
if (NeedsResponse(*colObj0,*colObj1))
islandmanifold.push_back(manifold);
}
}
}
if (allSleeping)
{
int i;
for (i=0;i<numBodies;i++)
{
CollisionObject* colObj0 = collisionObjects[i];
if (colObj0->m_islandTag1 == islandId)
{
colObj0->SetActivationState( ISLAND_SLEEPING );
}
}
} else
{
int i;
for (i=0;i<numBodies;i++)
{
CollisionObject* colObj0 = collisionObjects[i];
if (colObj0->m_islandTag1 == islandId)
{
if ( colObj0->GetActivationState() == ISLAND_SLEEPING)
{
colObj0->SetActivationState( WANTS_DEACTIVATION);
}
}
}
/// Process the actual simulation, only if not sleeping/deactivated
if (islandmanifold.size())
{
callback->ProcessIsland(&islandmanifold[0],islandmanifold.size());
}
}
}
}