Added new level sound

src/gameplay/core/Game.h

@@ -74,6 +74,13 @@ public:
     double getFallAccumulator() const { return fallAcc; } // Debug: time accumulated toward next drop
     void setLevelGravityMultiplier(int level, double m);
 
+    // Visual effect hooks
+    void updateVisualEffects(double frameMs);
+    bool hasHardDropShake() const { return hardDropShakeTimerMs > 0.0; }
+    double hardDropShakeStrength() const;
+    const std::vector<SDL_Point>& getHardDropCells() const { return hardDropCells; }
+    uint32_t getHardDropFxId() const { return hardDropFxId; }
+
 private:
     std::array<int, COLS*ROWS> board{}; // 0 empty else color index
     Piece cur{}, hold{}, nextPiece{};   // current, held & next piece
@@ -109,6 +116,12 @@ private:
     // Backwards-compatible accessors (delegate to gravityMgr)
     double computeGravityMsForLevel(int level) const;
 
+    // Impact FX timers
+    double hardDropShakeTimerMs{0.0};
+    static constexpr double HARD_DROP_SHAKE_DURATION_MS = 320.0;
+    std::vector<SDL_Point> hardDropCells;
+    uint32_t hardDropFxId{0};
+
     // Internal helpers ----------------------------------------------------
     void refillBag();
     void spawn();