Fix compiler warnings

src/items/attachment.cpp

@@ -599,7 +599,7 @@ void Attachment::updateGraphics(float dt)
             World::getWorld()->getTicksSinceStart()) / 0.7f;
         if (scale_ratio > 0.0f)
         {
-            float scale = 0.3 * scale_ratio +
+            float scale = 0.3f * scale_ratio +
                 wanted_node_scale * (1.0f - scale_ratio);
             m_node->setScale(core::vector3df(scale, scale, scale));
         }

src/items/network_item_manager.cpp

@@ -475,7 +475,7 @@ void NetworkItemManager::restoreState(BareNetworkString *buffer, int count)
     // be the larger group (confirmed: when a new item was dropped
     // by a remote kart; all_items: if an item is predicted on
     // the client, but not yet confirmed). So 
-    unsigned int max_index = std::max(m_confirmed_state.size(),
+    size_t max_index = std::max(m_confirmed_state.size(),
                                       m_all_items.size()        );
     m_all_items.resize(max_index, NULL);
 

src/items/projectile_manager.cpp

@@ -277,7 +277,7 @@ std::shared_ptr<Rewinder>
 {
     if (uid.size() != 6)
         return nullptr;
-    BareNetworkString data(uid.data(), uid.size());
+    BareNetworkString data(uid.data(), (int)uid.size());
 
     RewinderName rn = (RewinderName)data.getUInt8();
     if (!(rn == RN_BOWLING || rn == RN_PLUNGER ||

src/karts/controller/kart_control.hpp

@@ -70,8 +70,8 @@ public:
     /** Resets all controls. */
     void reset()
     {
-        m_steer     = 0.0f;
-        m_accel     = 0.0f;
+        m_steer     = 0;
+        m_accel     = 0;
         m_brake     = false;
         m_nitro     = false;
         m_skid      = SC_NONE;
@@ -93,10 +93,6 @@ public:
                m_fire      == other.m_fire    &&
                m_look_back == other.m_look_back;
     }    // operator==
-
-    // ------------------------------------------------------------------------
-    /** Return the serialised size in bytes.                                 */
-    static int getLength() { return 9; }
     // ------------------------------------------------------------------------
     /** Copies the important data from this objects into a memory buffer. */
     void saveState(BareNetworkString *buffer) const;

src/karts/rescue_animation.cpp

@@ -182,8 +182,8 @@ void RescueAnimation::updateGraphics(float dt)
     float dur = stk_config->ticks2Time(
         World::getWorld()->getTicksSinceStart() - m_created_ticks);
     dur *= 25.0f;
-    float ref_dur =
-        Referee::m_st_last_rescue_frame - Referee::m_st_first_rescue_frame;
+    float ref_dur = (float)
+        (Referee::m_st_last_rescue_frame - Referee::m_st_first_rescue_frame);
     float frame = std::fmod(dur, ref_dur);
     frame += (float)Referee::m_st_first_rescue_frame;
     m_referee->getSceneNode()->setCurrentFrame(frame);

src/modes/linear_world.cpp

@@ -1069,7 +1069,7 @@ std::pair<uint32_t, uint32_t> LinearWorld::getGameStartedProgress() const
         std::numeric_limits<uint32_t>::max(),
         std::numeric_limits<uint32_t>::max());
     AbstractKart* slowest_kart = NULL;
-    for (unsigned i = m_karts.size(); i > 0; i--)
+    for (unsigned i = (unsigned)m_karts.size(); i > 0; i--)
     {
         slowest_kart = getKartAtPosition(i);
         if (slowest_kart && !slowest_kart->isEliminated())

src/modes/soccer_world.cpp

@@ -735,7 +735,7 @@ void SoccerWorld::enterRaceOverState()
 // ----------------------------------------------------------------------------
 void SoccerWorld::saveCompleteState(BareNetworkString* bns)
 {
-    const unsigned red_scorers = m_red_scorers.size();
+    const unsigned red_scorers = (unsigned)m_red_scorers.size();
     bns->addUInt32(red_scorers);
     for (unsigned i = 0; i < red_scorers; i++)
     {
@@ -746,7 +746,7 @@ void SoccerWorld::saveCompleteState(BareNetworkString* bns)
             .encodeString(m_red_scorers[i].m_player);
     }
 
-    const unsigned blue_scorers = m_blue_scorers.size();
+    const unsigned blue_scorers = (unsigned)m_blue_scorers.size();
     bns->addUInt32(blue_scorers);
     for (unsigned i = 0; i < blue_scorers; i++)
     {

src/network/protocols/client_lobby.cpp

@@ -1329,7 +1329,7 @@ void ClientLobby::changeSpectateTarget(PlayerAction action, int value,
         });
     }
 
-    const int num_karts = karts.size();
+    const int num_karts = (int)karts.size();
     int current_idx = -1;
     if (cam->getKart())
     {