Fixed graphical error in FTL races when music is enabled

(see bug 3072740): the countdown timer caused incorrect
values to be used for the 'music credit' display.


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@6121 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/modes/follow_the_leader.cpp

@@ -51,6 +51,15 @@ FollowTheLeaderRace::~FollowTheLeaderRace()
 #pragma mark -
 #pragma mark clock events
 #endif
+//-----------------------------------------------------------------------------
+/** Returns the original time at which the countdown timer started. This is
+ *  used by the race_gui to display the music credits in FTL mode correctly.
+ */
+float FollowTheLeaderRace::getClockStartTime()
+{
+    return m_leader_intervals[0];
+}   // getClockStartTime
+
 //-----------------------------------------------------------------------------
 /** Called when a kart must be eliminated.
  */

src/modes/follow_the_leader.hpp

@@ -41,6 +41,7 @@ public:
     // overriding World methods
     virtual void restartRace();
     virtual std::string getIdent() const;
+    float   getClockStartTime();
     virtual bool useFastMusicNearEnd() const { return false; }
     virtual RaceGUIBase::KartIconDisplayInfo* getKartsDisplayInfo();
     

src/states_screens/race_gui.cpp

@@ -38,6 +38,7 @@ using namespace irr;
 #include "items/attachment_manager.hpp"
 #include "items/powerup_manager.hpp"
 #include "karts/kart_properties_manager.hpp"
+#include "modes/follow_the_leader.hpp"
 #include "modes/linear_world.hpp"
 #include "modes/world.hpp"
 #include "race/race_manager.hpp"
@@ -1107,6 +1108,11 @@ void RaceGUI::drawGlobalMusicDescription()
     gui::IGUIFont*       font = GUIEngine::getFont();
 
     float race_time = World::getWorld()->getTime();
+    // In follow the leader the clock counts backwards, so convert the
+    // countdown time to time since start:
+    if(race_manager->getMinorMode()==RaceManager::MINOR_MODE_FOLLOW_LEADER)
+        race_time = ((FollowTheLeaderRace*)World::getWorld())->getClockStartTime()
+                  - race_time;
     // ---- Manage pulsing effect
     // 3.0 is the duration of ready/set (TODO: don't hardcode)
     float timeProgression = (float)(race_time) /