decrease file size

src/Pieces/PiecesFiles.cpp

@@ -51,11 +51,11 @@ bool PiecesFiles::savePieces(int polyominoSize, std::vector<Polyomino>& polyomin
         buffer << infoByte;
 
         const int bitsNeeded = polyomino.getLength() * polyomino.getLength();
-        const int longsNeeded = bitsNeeded / 64 + 1;
+        const int bytesNeeded = bitsNeeded / 8 + 1;
 
         // write the positions of the piece
-        for (int i = 0; i < longsNeeded; i++) {
-            buffer << polyomino.getPositionsData()[i];
+        for (int i = 0; i < bytesNeeded; i++) {
+            buffer << static_cast<std::uint8_t>(polyomino.getPositionsData()[i/4] >> ((i%4) * 8));
         }
     }
 
@@ -99,6 +99,7 @@ bool PiecesFiles::loadPieces(int polyominoSize, std::vector<Piece>& pieces, std:
     constexpr char yMask = 0b0000'1111;
 
     std::uint8_t infoByte;
+    std::uint8_t positionByte;
     int i = 0;
     while (!buffer.IsFinished()) {
         // if (piecesFile.eof()) break;
@@ -110,19 +111,20 @@ bool PiecesFiles::loadPieces(int polyominoSize, std::vector<Piece>& pieces, std:
         int length = (infoByte & lengthMask);
 
         const int bitsNeeded = length * length;
-        const int longsNeeded = bitsNeeded / 64 + 1;
+        const int bytesNeeded = bitsNeeded / 8 + 1;
 
         // read positions
         Polyomino::PolyominoData polyominoData{};
-        for (int i = 0; i < longsNeeded; i++) {
-            buffer >> polyominoData[i];
+
+        for (int j = 0; j < bytesNeeded; j++) {
+            buffer >> positionByte;
+            polyominoData[j/4] |= static_cast<std::uint64_t>(positionByte) << ((j%4) * 8);
         }
 
-        // create piece
-        Piece readPiece(Polyomino(std::move(polyominoData), length), pieceBlock);
+        pieces.emplace_back(Polyomino(std::move(polyominoData), length), pieceBlock);
+
         nextPieceBlockType(pieceBlock);
-        
-        pieces.push_back(readPiece);
+
         if (isConvex) {
             convexPieces.push_back(i);
         }