internal static b2Contact Create(b2Fixture fixtureA, int indexA, b2Fixture fixtureB, int indexB)
{
if (s_initialized == false)
{
InitializeRegisters();
s_initialized = true;
}
b2Shape.Type type1 = fixtureA.GetType();
b2Shape.Type type2 = fixtureB.GetType();
Debug.Assert(0 <= ((int)type1) && type1 < b2Shape.Type.e_typeCount);
Debug.Assert(0 <= ((int)type2) && type2 < b2Shape.Type.e_typeCount);
b2ContactCreateFcn createFcn = s_registers[(int)type1, (int)type2].createFcn;
if (createFcn != null)
{
if (s_registers[(int)type1, (int)type2].primary)
{
return(createFcn(fixtureA, indexA, fixtureB, indexB));
}
else
{
return(createFcn(fixtureB, indexB, fixtureA, indexA));
}
}
else
{
return(null);
}
}
public b2Contact Create(b2Fixture fixtureA, b2Fixture fixtureB)
{
int type1 = fixtureA.GetType();
int type2 = fixtureB.GetType();
//b2Settings.b2Assert(b2Shape.e_unknownShape < type1 && type1 < b2Shape.e_shapeTypeCount);
//b2Settings.b2Assert(b2Shape.e_unknownShape < type2 && type2 < b2Shape.e_shapeTypeCount);
b2ContactRegister reg = m_registers[type1][type2];
b2Contact c;
if (reg.pool != null)
{
// Pop a contact off the pool
c = reg.pool;
reg.pool = c.m_next;
reg.poolCount--;
c.Reset(fixtureA, fixtureB);
return(c);
}
Func <object, b2Contact> createFcn = reg.createFcn;
if (createFcn != null)
{
if (reg.primary)
{
c = createFcn(m_allocator);
c.Reset(fixtureA, fixtureB);
return(c);
}
else
{
c = createFcn(m_allocator);
c.Reset(fixtureB, fixtureA);
return(c);
}
}
else
{
return(null);
}
}
internal static void Destroy(ref b2Contact contact)
{
Debug.Assert(s_initialized == true);
b2Fixture fixtureA = contact.m_fixtureA;
b2Fixture fixtureB = contact.m_fixtureB;
if (contact.m_manifold.pointCount > 0 && fixtureA.IsSensor() == false && fixtureB.IsSensor() == false)
{
fixtureA.GetBody().SetAwake(true);
fixtureB.GetBody().SetAwake(true);
}
b2Shape.Type typeA = fixtureA.GetType();
b2Shape.Type typeB = fixtureB.GetType();
Debug.Assert(0 <= ((int)typeA) && typeB < b2Shape.Type.e_typeCount);
Debug.Assert(0 <= ((int)typeA) && typeB < b2Shape.Type.e_typeCount);
b2ContactDestroyFcn destroyFcn = s_registers[(int)typeA, (int)typeB].destroyFcn;
destroyFcn(ref contact);
}
public override void Reset(b2Fixture fixtureA = null, b2Fixture fixtureB = null)
{
base.Reset(fixtureA, fixtureB);
b2Settings.b2Assert(fixtureA.GetType() == b2Shape.e_polygonShape);
b2Settings.b2Assert(fixtureB.GetType() == b2Shape.e_circleShape);
}
