// Create and destroy proxies. These call Flush first.
public ushort CreateProxy(AABB aabb, object userData)
{
Box2DXDebug.Assert(_proxyCount < Settings.MaxProxies);
Box2DXDebug.Assert(_freeProxy != PairManager.NullProxy);
ushort proxyId = _freeProxy;
Proxy proxy = _proxyPool[proxyId];
_freeProxy = proxy.Next;
proxy.OverlapCount = 0;
proxy.UserData = userData;
int boundCount = 2 * _proxyCount;
ushort[] lowerValues = new ushort[2], upperValues = new ushort[2];
ComputeBounds(out lowerValues, out upperValues, aabb);
for (int axis = 0; axis < 2; ++axis)
{
Bound[] bounds = _bounds[axis];
int lowerIndex, upperIndex;
Query(out lowerIndex, out upperIndex, lowerValues[axis], upperValues[axis], bounds, boundCount, axis);
#warning "Check this"
//memmove(bounds + upperIndex + 2, bounds + upperIndex, (boundCount - upperIndex) * sizeof(b2Bound));
Bound[] tmp = new Bound[boundCount - upperIndex];
for (int i = 0; i < (boundCount - upperIndex); i++)
{
tmp[i] = bounds[upperIndex + i].Clone();
}
for (int i = 0; i < (boundCount - upperIndex); i++)
{
bounds[upperIndex + 2 + i] = tmp[i];
}
//memmove(bounds + lowerIndex + 1, bounds + lowerIndex, (upperIndex - lowerIndex) * sizeof(b2Bound));
tmp = new Bound[upperIndex - lowerIndex];
for (int i = 0; i < (upperIndex - lowerIndex); i++)
{
tmp[i] = bounds[lowerIndex + i].Clone();
}
for (int i = 0; i < (upperIndex - lowerIndex); i++)
{
bounds[lowerIndex + 1 + i] = tmp[i];
}
// The upper index has increased because of the lower bound insertion.
++upperIndex;
// Copy in the new bounds.
bounds[lowerIndex].Value = lowerValues[axis];
bounds[lowerIndex].ProxyId = proxyId;
bounds[upperIndex].Value = upperValues[axis];
bounds[upperIndex].ProxyId = proxyId;
bounds[lowerIndex].StabbingCount = lowerIndex == 0 ? (ushort)0 : bounds[lowerIndex - 1].StabbingCount;
bounds[upperIndex].StabbingCount = bounds[upperIndex - 1].StabbingCount;
// Adjust the stabbing count between the new bounds.
for (int index = lowerIndex; index < upperIndex; ++index)
{
++bounds[index].StabbingCount;
}
// Adjust the all the affected bound indices.
for (int index = lowerIndex; index < boundCount + 2; ++index)
{
Proxy proxy_ = _proxyPool[bounds[index].ProxyId];
if (bounds[index].IsLower)
{
proxy_.LowerBounds[axis] = (ushort)index;
}
else
{
proxy_.UpperBounds[axis] = (ushort)index;
}
}
}
++_proxyCount;
Box2DXDebug.Assert(_queryResultCount < Settings.MaxProxies);
// Create pairs if the AABB is in range.
for (int i = 0; i < _queryResultCount; ++i)
{
Box2DXDebug.Assert(_queryResults[i] < Settings.MaxProxies);
Box2DXDebug.Assert(_proxyPool[_queryResults[i]].IsValid);
_pairManager.AddBufferedPair(proxyId, _queryResults[i]);
}
_pairManager.Commit();
if (IsValidate)
{
Validate();
}
// Prepare for next query.
_queryResultCount = 0;
IncrementTimeStamp();
return(proxyId);
}
