Make some flyable sfx lower volume in splitscreen multiplayer

src/items/bowling.cpp

@@ -38,6 +38,7 @@ Bowling::Bowling(AbstractKart *kart)
 {
     m_has_hit_kart = false;
     m_roll_sfx = SFXManager::get()->createSoundSource("bowling_roll");
+    fixSFXSplitscreen(m_roll_sfx);
     m_roll_sfx->play();
     m_roll_sfx->setLoop(true);
 }   // Bowling

src/items/flyable.cpp

@@ -26,6 +26,7 @@
 #include <IMeshManipulator.h>
 #include <IMeshSceneNode.h>
 
+#include "audio/sfx_base.hpp"
 #include "achievements/achievements_status.hpp"
 #include "config/player_manager.hpp"
 #include "graphics/explosion.hpp"
@@ -809,4 +810,12 @@ void Flyable::onDeleteFlyable()
     moveToInfinity();
 }   // onDeleteFlyable
 
+// ----------------------------------------------------------------------------
+/* Make specifc sfx lower volume if needed in splitscreen multiplayer. */
+void Flyable::fixSFXSplitscreen(SFXBase* sfx)
+{
+    if (sfx && RaceManager::get()->getNumLocalPlayers() > 1)
+        sfx->setVolume(1.0f / (float)RaceManager::get()->getNumLocalPlayers());
+}   // fixSFXSplitscreen
+
 /* EOF */

src/items/flyable.hpp

@@ -39,6 +39,7 @@ class AbstractKart;
 class AbstractKartAnimation;
 class HitEffect;
 class PhysicalObject;
+class SFXBase;
 class XMLNode;
 
 /**
@@ -184,6 +185,7 @@ protected:
 
     void              moveToInfinity(bool set_moveable_trans = true);
     void              removePhysics();
+    void              fixSFXSplitscreen(SFXBase* sfx);
 public:
 
                  Flyable     (AbstractKart* kart,

src/items/rubber_ball.cpp

@@ -71,6 +71,7 @@ RubberBall::RubberBall(AbstractKart *kart)
 
     m_target = NULL;
     m_ping_sfx = SFXManager::get()->createSoundSource("ball_bounce");
+    fixSFXSplitscreen(m_ping_sfx);
 }   // RubberBall
 
 // ----------------------------------------------------------------------------