diff options
| -rw-r--r-- | src/Generating/PieceGenerator.cpp | 56 | ||||
| -rw-r--r-- | src/Generating/PieceGenerator.h | 20 |
2 files changed, 48 insertions, 28 deletions
diff --git a/src/Generating/PieceGenerator.cpp b/src/Generating/PieceGenerator.cpp index 8999a5ff7..8e9a48be6 100644 --- a/src/Generating/PieceGenerator.cpp +++ b/src/Generating/PieceGenerator.cpp @@ -392,14 +392,17 @@ bool cPieceGenerator::TryPlacePieceAtConnector( Connections.reserve(AvailablePieces.size()); Vector3i ConnPos = a_Connector.m_Pos; // The position at which the new connector should be placed - 1 block away from the connector AddFaceDirection(ConnPos.x, ConnPos.y, ConnPos.z, a_Connector.m_Direction); - - /* - // DEBUG: - printf("Placing piece at connector pos {%d, %d, %d}, direction %s\n", ConnPos.x, ConnPos.y, ConnPos.z, BlockFaceToString(a_Connector.m_Direction).c_str()); - //*/ - + int WeightTotal = 0; for (cPieces::iterator itrP = AvailablePieces.begin(), endP = AvailablePieces.end(); itrP != endP; ++itrP) { + // Get the relative chance of this piece being generated in this path: + int Weight = m_PiecePool.GetPieceWeight(a_ParentPiece, a_Connector, **itrP); + if (Weight <= 0) + { + continue; + } + + // Try fitting each of the piece's connector: cPiece::cConnectors Connectors = (*itrP)->GetConnectors(); for (cPiece::cConnectors::iterator itrC = Connectors.begin(), endC = Connectors.end(); itrC != endC; ++itrC) { @@ -419,7 +422,9 @@ bool cPieceGenerator::TryPlacePieceAtConnector( // Doesn't fit in this rotation continue; } - Connections.push_back(cConnection(**itrP, *itrC, NumCCWRotations)); + // Fits, add it to list of possibile connections: + Connections.push_back(cConnection(**itrP, *itrC, NumCCWRotations, Weight)); + WeightTotal += Weight; } // for itrC - Connectors[] } // for itrP - AvailablePieces[] if (Connections.empty()) @@ -427,21 +432,23 @@ bool cPieceGenerator::TryPlacePieceAtConnector( // No available connections, bail out return false; } + ASSERT(WeightTotal > 0); - // Choose a random connection from the list: - int rnd = m_Noise.IntNoise3DInt(a_Connector.m_Pos.x, a_Connector.m_Pos.y, a_Connector.m_Pos.z) / 7; - cConnection & Conn = Connections[rnd % Connections.size()]; + // Choose a random connection from the list, based on the weights: + int rnd = (m_Noise.IntNoise3DInt(a_Connector.m_Pos.x, a_Connector.m_Pos.y, a_Connector.m_Pos.z) / 7) % WeightTotal; + size_t ChosenIndex = 0; + for (cConnections::const_iterator itr = Connections.begin(), end = Connections.end(); itr != end; ++itr, ++ChosenIndex) + { + rnd -= itr->m_Weight; + if (rnd <= 0) + { + // This is the piece to choose + break; + } + } + cConnection & Conn = Connections[ChosenIndex]; // Place the piece: - /* - // DEBUG - printf("Chosen connector at {%d, %d, %d}, direction %s, needs %d rotations\n", - Conn.m_Connector.m_Pos.x, Conn.m_Connector.m_Pos.y, Conn.m_Connector.m_Pos.z, - BlockFaceToString(Conn.m_Connector.m_Direction).c_str(), - Conn.m_NumCCWRotations - ); - //*/ - Vector3i NewPos = Conn.m_Piece->RotatePos(Conn.m_Connector.m_Pos, Conn.m_NumCCWRotations); ConnPos -= NewPos; cPlacedPiece * PlacedPiece = new cPlacedPiece(&a_ParentPiece, *(Conn.m_Piece), ConnPos, Conn.m_NumCCWRotations); @@ -449,12 +456,6 @@ bool cPieceGenerator::TryPlacePieceAtConnector( // Add the new piece's connectors to the list of free connectors: cPiece::cConnectors Connectors = Conn.m_Piece->GetConnectors(); - - /* - // DEBUG: - printf("Adding %u connectors to the pool\n", Connectors.size() - 1); - //*/ - for (cPiece::cConnectors::const_iterator itr = Connectors.begin(), end = Connectors.end(); itr != end; ++itr) { if (itr->m_Pos.Equals(Conn.m_Connector.m_Pos)) @@ -524,10 +525,11 @@ void cPieceGenerator::DebugConnectorPool(const cPieceGenerator::cFreeConnectors /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // cPieceGenerator::cConnection: -cPieceGenerator::cConnection::cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations) : +cPieceGenerator::cConnection::cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations, int a_Weight) : m_Piece(&a_Piece), m_Connector(a_Connector), - m_NumCCWRotations(a_NumCCWRotations) + m_NumCCWRotations(a_NumCCWRotations), + m_Weight(a_Weight) { } diff --git a/src/Generating/PieceGenerator.h b/src/Generating/PieceGenerator.h index bef9d3463..f4433b947 100644 --- a/src/Generating/PieceGenerator.h +++ b/src/Generating/PieceGenerator.h @@ -85,6 +85,13 @@ typedef std::vector<cPiece *> cPieces; +// fwd: +class cPlacedPiece; + + + + + /** This class is an interface that provides pieces for the generator. It can keep track of what pieces were placed and adjust the returned piece vectors. */ class cPiecePool @@ -101,6 +108,16 @@ public: Multiple starting points are supported, one of the returned piece will be chosen. */ virtual cPieces GetStartingPieces(void) = 0; + /** Returns the relative weight with which the a_NewPiece is to be selected for placing under a_PlacedPiece through a_ExistingConnector. + This allows the pool to tweak the piece's chances, based on the previous pieces in the tree and the connector used. + The higher the number returned, the higher the chance the piece will be chosen. 0 means the piece will never be chosen. + */ + virtual int GetPieceWeight( + const cPlacedPiece & a_PlacedPiece, + const cPiece::cConnector & a_ExistingConnector, + const cPiece & a_NewPiece + ) { return 1; } + /** Called after a piece is placed, to notify the pool that it has been used. The pool may adjust the pieces it will return the next time. */ virtual void PiecePlaced(const cPiece & a_Piece) = 0; @@ -157,8 +174,9 @@ protected: cPiece * m_Piece; // The piece being connected cPiece::cConnector m_Connector; // The piece's connector being used (relative non-rotated coords) int m_NumCCWRotations; // Number of rotations necessary to match the two connectors + int m_Weight; // Relative chance that this connection will be chosen - cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations); + cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations, int a_Weight); }; typedef std::vector<cConnection> cConnections; |