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-rw-r--r--src/Generating/PieceGenerator.cpp26
-rw-r--r--src/Generating/PieceGenerator.h9
-rw-r--r--src/Generating/PrefabPiecePool.cpp9
-rw-r--r--src/Generating/PrefabPiecePool.h1
4 files changed, 44 insertions, 1 deletions
diff --git a/src/Generating/PieceGenerator.cpp b/src/Generating/PieceGenerator.cpp
index 1880a20d5..5de231f75 100644
--- a/src/Generating/PieceGenerator.cpp
+++ b/src/Generating/PieceGenerator.cpp
@@ -362,7 +362,31 @@ cPlacedPiece * cPieceGenerator::PlaceStartingPiece(int a_BlockX, int a_BlockY, i
// Choose a random one of the starting pieces:
cPieces StartingPieces = m_PiecePool.GetStartingPieces();
- cPiece * StartingPiece = StartingPieces[rnd % StartingPieces.size()];
+ int Total = 0;
+ for (cPieces::const_iterator itr = StartingPieces.begin(), end = StartingPieces.end(); itr != end; ++itr)
+ {
+ Total += m_PiecePool.GetStartingPieceWeight(**itr);
+ }
+ cPiece * StartingPiece;
+ if (Total > 0)
+ {
+ int Chosen = rnd % Total;
+ StartingPiece = StartingPieces.front();
+ for (cPieces::const_iterator itr = StartingPieces.begin(), end = StartingPieces.end(); itr != end; ++itr)
+ {
+ Chosen -= m_PiecePool.GetStartingPieceWeight(**itr);
+ if (Chosen <= 0)
+ {
+ StartingPiece = *itr;
+ break;
+ }
+ }
+ }
+ else
+ {
+ // All pieces returned zero weight, but we need one to start. Choose with equal chance:
+ StartingPiece = StartingPieces[rnd % StartingPieces.size()];
+ }
rnd = rnd >> 16;
// Choose a random supported rotation:
diff --git a/src/Generating/PieceGenerator.h b/src/Generating/PieceGenerator.h
index 21c155c96..fd8576706 100644
--- a/src/Generating/PieceGenerator.h
+++ b/src/Generating/PieceGenerator.h
@@ -120,6 +120,15 @@ public:
const cPiece & a_NewPiece
) { return 1; }
+ /** Returns the relative weight with which the a_NewPiece is to be selected for placing as the first piece.
+ This allows the pool to tweak the piece's chances.
+ The higher the number returned, the higher the chance the piece will be chosen. 0 means the piece will not be chosen.
+ If all pieces return 0, a random piece is chosen, with all equal chances.
+ */
+ virtual int GetStartingPieceWeight(
+ 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;
diff --git a/src/Generating/PrefabPiecePool.cpp b/src/Generating/PrefabPiecePool.cpp
index ed9340815..ad97ab0e7 100644
--- a/src/Generating/PrefabPiecePool.cpp
+++ b/src/Generating/PrefabPiecePool.cpp
@@ -101,6 +101,15 @@ int cPrefabPiecePool::GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const c
+int cPrefabPiecePool::GetStartingPieceWeight(const cPiece & a_NewPiece)
+{
+ return ((const cPrefab &)a_NewPiece).GetDefaultWeight();
+}
+
+
+
+
+
void cPrefabPiecePool::PiecePlaced(const cPiece & a_Piece)
{
// Do nothing
diff --git a/src/Generating/PrefabPiecePool.h b/src/Generating/PrefabPiecePool.h
index c6a5ad360..695ab4ea5 100644
--- a/src/Generating/PrefabPiecePool.h
+++ b/src/Generating/PrefabPiecePool.h
@@ -70,6 +70,7 @@ protected:
virtual cPieces GetPiecesWithConnector(int a_ConnectorType) override;
virtual cPieces GetStartingPieces(void) override;
virtual int GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const cPiece::cConnector & a_ExistingConnector, const cPiece & a_NewPiece) override;
+ virtual int GetStartingPieceWeight(const cPiece & a_NewPiece) override;
virtual void PiecePlaced(const cPiece & a_Piece) override;
virtual void Reset(void) override;
} ;