/// <summary>
/// Update the pairs. This results in pair callbacks. This can only add pairs.
/// </summary>
/// <param name="callback">The callback.</param>
public void UpdatePairs(BroadphaseHandler callback)
{
// Reset pair buffer
_pairCount = 0;
// Perform tree queries for all moving proxies.
for (int j = 0; j < _moveCount; ++j)
{
_queryProxyId = _moveBuffer[j];
if (_queryProxyId == NullProxy)
{
continue;
}
AABB fatAABB;
// We have to query the tree with the fat AABB so that
// we don't fail to create a pair that may touch later.
_tree.GetFatAABB(_queryProxyId, out fatAABB);
// Query tree, create pairs and add them pair buffer.
_tree.Query(_queryCallback, ref fatAABB);
}
// Reset move buffer
_moveCount = 0;
// Sort the pair buffer to expose duplicates.
Array.Sort(_pairBuffer, 0, _pairCount);
// Send the pairs back to the client.
int i = 0;
while (i < _pairCount)
{
Pair primaryPair = _pairBuffer[i];
FixtureProxy userDataA = _tree.GetUserData(primaryPair.ProxyIdA);
FixtureProxy userDataB = _tree.GetUserData(primaryPair.ProxyIdB);
callback(ref userDataA, ref userDataB);
++i;
// Skip any duplicate pairs.
while (i < _pairCount)
{
Pair pair = _pairBuffer[i];
if (pair.ProxyIdA != primaryPair.ProxyIdA || pair.ProxyIdB != primaryPair.ProxyIdB)
{
break;
}
++i;
}
}
// Try to keep the tree balanced.
//_tree.Rebalance(4);
}
/// <summary>Update the pairs. This results in pair callbacks. This can only add pairs.</summary>
/// <param name="callback">The callback.</param>
public void UpdatePairs(BroadphaseHandler callback)
{
// Reset pair buffer
pairCount = 0;
// Perform tree queries for all moving proxies.
for (int i = 0; i < moveCount; ++i)
{
queryProxyId = moveBuffer[i];
if (queryProxyId == NullProxy)
{
continue;
}
// We have to query the tree with the fat AABB so that
// we don't fail to create a pair that may touch later.
tree.GetFatAabb(queryProxyId, out Aabb fatAabb);
// Query tree, create pairs and add them pair buffer.
tree.Query(queryCallback, ref fatAabb);
}
for (int i = 0; i < pairCount; ++i)
{
Pair primaryPair = pairBuffer[i];
FixtureProxy userDataA = tree.GetUserData(primaryPair.ProxyIdA);
FixtureProxy userDataB = tree.GetUserData(primaryPair.ProxyIdB);
callback(ref userDataA, ref userDataB);
}
// Clear move flags
for (int i = 0; i < moveCount; ++i)
{
int proxyId = moveBuffer[i];
if (proxyId == NullProxy)
{
continue;
}
tree.ClearMoved(proxyId);
}
// Reset move buffer
moveCount = 0;
}
internal ContactManager(IBroadPhase broadPhase)
{
BroadPhase = broadPhase;
OnBroadphaseCollision = AddPair;
ContactList = new List <Contact>(128);
}
/// <summary>
/// Initializes a new instance of the <see cref="ContactManager" /> class
/// </summary>
/// <param name="broadPhase">The broad phase</param>
internal ContactManager(IBroadPhase broadPhase)
{
BroadPhase = broadPhase;
OnBroadphaseCollision = AddPair;
}
