补充彩虹方块与虚空核心强化链

src/include/Tetris.h

@@ -87,6 +87,9 @@ struct PlayerStats
     int blackHoleCharges;
     int reshapeLevel;
     int reshapeCharges;
+    int rainbowPieceLevel;
+    int voidCoreLevel;
+    int pendingRainbowPieceCount;
     int stableStructureLevel;
     int doubleGrowthLevel;
     int gamblerLevel;
@@ -170,6 +173,7 @@ extern bool holdUsedThisTurn;
 extern bool currentPieceIsExplosive;
 extern bool currentPieceIsLaser;
 extern bool currentPieceIsCross;
+extern bool currentPieceIsRainbow;
 extern int bricks[7][4][4][4];
 extern COLORREF BrickColor[7];