More sound tweaks in multiplayer

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@8593 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/graphics/explosion.cpp

@@ -25,14 +25,17 @@
 #include "graphics/material.hpp"
 #include "graphics/material_manager.hpp"
 #include "items/projectile_manager.hpp"
+#include "race/race_manager.hpp"
 #include "utils/vec3.hpp"
 
 const float burst_time = 0.1f;
 
-Explosion::Explosion(const Vec3& coord, const char* explosion_sound)
+Explosion::Explosion(const Vec3& coord, const char* explosion_sound, bool player_kart_hit)
 {    
     m_remaining_time = burst_time; // short emision time, explosion, not constant flame
     m_node = irr_driver->addParticleNode();
+    m_player_kart_hit = player_kart_hit;
+    
 #ifdef DEBUG
     m_node->setName("explosion");
 #endif
@@ -89,6 +92,17 @@ Explosion::~Explosion()
 void Explosion::init(const Vec3& coord)
 {
     m_explode_sound->position(coord);
+    
+    // in multiplayer mode, sounds are NOT positional (because we have multiple listeners)
+    // so the sounds of all AIs are constantly heard. So reduce volume of sounds.
+    if (race_manager->getNumLocalPlayers() > 1)
+    {
+        m_explode_sound->volume(m_player_kart_hit ? 1.0f : 0.5f);
+    }
+    else
+    {
+        m_explode_sound->volume(1.0f);
+    }
     m_explode_sound->play();
 }   // init
 

src/graphics/explosion.hpp

@@ -38,10 +38,11 @@ class Explosion : public NoCopy
 private:
     SFXBase*       m_explode_sound;
     float          m_remaining_time;
+    bool           m_player_kart_hit;
     scene::IParticleSystemSceneNode   *m_node;
-        
+    
 public:
-         Explosion(const Vec3& coord, const char* explosion_sound);
+         Explosion(const Vec3& coord, const char* explosion_sound, bool player_hit);
         ~Explosion();
     void init     (const Vec3& coord);
     void update   (float delta_t);

src/items/attachment.cpp

@@ -126,7 +126,7 @@ void Attachment::hitBanana(Item *item, int new_attachment)
     case ATTACH_BOMB:
         {
         add_a_new_item = false;
-        projectile_manager->newExplosion(m_kart->getXYZ());
+        projectile_manager->newExplosion(m_kart->getXYZ(), "explosion", m_kart->getController()->isPlayerController());
         m_kart->handleExplosion(m_kart->getXYZ(), /*direct_hit*/ true);
         clear();
         if(new_attachment==-1) 
@@ -235,7 +235,7 @@ void Attachment::update(float dt)
         }
         if(m_time_left<=0.0)
         {
-            projectile_manager->newExplosion(m_kart->getXYZ());
+            projectile_manager->newExplosion(m_kart->getXYZ(), "explosion", m_kart->getController()->isPlayerController());
             m_kart->handleExplosion(m_kart->getXYZ(), 
                                     /*direct_hit*/ true);
         }

src/items/projectile_manager.cpp

@@ -85,7 +85,7 @@ void ProjectileManager::update(float dt)
             if(! (*p)->hasHit()) { p++; continue; }
             if((*p)->needsExplosion())
             {
-                newExplosion((*p)->getXYZ(), (*p)->getExplosionSound() );
+                newExplosion((*p)->getXYZ(), (*p)->getExplosionSound(), false );
             }
             Flyable *f=*p;
             Projectiles::iterator pNext=m_active_projectiles.erase(p);  // returns the next element
@@ -187,9 +187,10 @@ Flyable *ProjectileManager::newProjectile(Kart *kart,
 /** See if there is an old, unused explosion object available. If so,
  *  reuse this object, otherwise create a new one. */
 Explosion* ProjectileManager::newExplosion(const Vec3& coord, 
-                                           const char* explosion_sound)
+                                           const char* explosion_sound,
+                                           bool player_kart_hit)
 {
-    Explosion *e = new Explosion(coord, explosion_sound);
+    Explosion *e = new Explosion(coord, explosion_sound, player_kart_hit);
     m_active_explosions.push_back(e);
     return e;
 }   // newExplosion

src/items/projectile_manager.hpp

@@ -72,7 +72,8 @@ public:
     Flyable*         newProjectile    (Kart *kart, 
                                        PowerupManager::PowerupType type);
     Explosion*       newExplosion     (const Vec3& coord, 
-                                       const char* explosion_sound="explosion");
+                                       const char* explosion_sound="explosion",
+                                       bool is_player_kart_hit = false);
     void             Deactivate       (Flyable *p) {}
     void             removeTextures   ();
 };