Method wakeIslands

physx/source/lowlevel/software/src/PxsIslandSim.cpp:676–783

void IslandSim::wakeIslands()
{
	PX_PROFILE_ZONE("Basic.wakeIslands", getContextId());

	//(1) Iterate over activating nodes and activate them


	PxU32 originalActiveIslands = mActiveIslands.size();

	for (PxU32 a = 0; a < Edge::eEDGE_TYPE_COUNT; ++a)
	{
		for (PxU32 i = 0, count = mActivatedEdges[a].size(); i < count; ++i)
		{
			IG::Edge& edge = mEdges[mActivatedEdges[a][i]];
			edge.mEdgeState &= (~Edge::eACTIVATING);
		}

	}

	mActivatedEdges[0].forceSize_Unsafe(0);
	mActivatedEdges[1].forceSize_Unsafe(0);
	/*mInitialActiveEdgeCount[0] = mActiveEdges[0].size();
	mInitialActiveEdgeCount[1] = mActiveEdges[1].size();*/

	for(PxU32 a = 0; a < mActivatingNodes.size(); ++a)
	{
		NodeIndex wakeNode = mActivatingNodes[a];

		IslandId islandId = mIslandIds[wakeNode.index()];

		Node& node = mNodes[wakeNode.index()];
		node.clearActivating();
		if(islandId != IG_INVALID_ISLAND)
		{
			if(!mIslandAwake.test(islandId))
			{
				markIslandActive(islandId);						
			}
			mActiveNodeIndex[wakeNode.index()] = IG_INVALID_NODE; //Mark active node as invalid.
			activateNodeInternal(wakeNode);
		}
		else
		{
			PX_ASSERT(node.isKinematic());
			node.setActive();
			PX_ASSERT(mActiveNodeIndex[wakeNode.index()] == a);
			mActiveNodeIndex[wakeNode.index()] = mActiveKinematicNodes.size();
			mActiveKinematicNodes.pushBack(wakeNode);

			//Wake up the islands connected to this waking kinematic!
			EdgeInstanceIndex index = node.mFirstEdgeIndex;
			while(index != IG_INVALID_EDGE)
			{
				EdgeInstance& edgeInstance = mEdgeInstances[index];

				NodeIndex outboundNode = mEdgeNodeIndices[index ^ 1];
				//Edge& edge = mEdges[index/2];
				//if(edge.isConnected()) //Only wake up if the edge is not connected...