Method PlaceStartingPiece

src/Generating/PieceGenerator.cpp:327–362

cPlacedPiece * cPieceGenerator::PlaceStartingPiece(int a_BlockX, int a_BlockY, int a_BlockZ, cFreeConnectors & a_OutConnectors)
{
	m_PiecePool.Reset();
	int rnd = m_Noise.IntNoise3DInt(a_BlockX, a_BlockY, a_BlockZ) / 7;
	
	// Choose a random one of the starting pieces:
	cPieces StartingPieces = m_PiecePool.GetStartingPieces();
	cPiece * StartingPiece = StartingPieces[rnd % StartingPieces.size()];
	rnd = rnd >> 16;
	
	// Choose a random supported rotation:
	int Rotations[4] = {0};
	int NumRotations = 1;
	for (size_t i = 1; i < ARRAYCOUNT(Rotations); i++)
	{
		if (StartingPiece->CanRotateCCW(i))
		{
			Rotations[NumRotations] = i;
			NumRotations += 1;
		}
	}
	int Rotation = Rotations[rnd % NumRotations];
	
	cPlacedPiece * res = new cPlacedPiece(NULL, *StartingPiece, Vector3i(a_BlockX, a_BlockY, a_BlockZ), Rotation);

	// Place the piece's connectors into a_OutConnectors:
	const cPiece::cConnectors & Conn = StartingPiece->GetConnectors();
	for (cPiece::cConnectors::const_iterator itr = Conn.begin(), end = Conn.end(); itr != end; ++itr)
	{
		a_OutConnectors.push_back(
			cFreeConnector(res, StartingPiece->RotateMoveConnector(*itr, Rotation, a_BlockX, a_BlockY, a_BlockZ))
		);
	}

	return res;
}