Allow looking back when watching replay

src/input/input_manager.cpp

@@ -732,6 +732,12 @@ void InputManager::dispatchInput(Input::InputType type, int deviceID,
             Controller* controller = pk->getController();
             if (controller != NULL) controller->action(action, abs(value));
         }
+        else if (race_manager->isWatchingReplay())
+        {
+            // Get the first ghost kart
+            World::getWorld()->getKart(0)
+                ->getController()->action(action, abs(value));
+        }
         // ... when in menus
         else
         {

src/karts/controller/ghost_controller.cpp

@@ -16,7 +16,9 @@
 //  along with this program; if not, write to the Free Software
 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
+#include "graphics/camera.hpp"
 #include "karts/controller/ghost_controller.hpp"
+#include "karts/controller/kart_control.hpp"
 #include "modes/world.hpp"
 
 GhostController::GhostController(AbstractKart *kart)
@@ -45,6 +47,21 @@ void GhostController::update(float dt)
         }
     }
 
+    // Watching replay use only
+    Camera *camera = Camera::getActiveCamera();
+    if (camera != NULL && camera->getMode() != Camera::CM_FINAL)
+    {
+        if (m_controls->m_look_back)
+        {
+            camera->setMode(Camera::CM_REVERSE);
+        }
+        else
+        {
+            if (camera->getMode() == Camera::CM_REVERSE)
+                camera->setMode(Camera::CM_NORMAL);
+        }
+    }
+
 }   // update
 
 //-----------------------------------------------------------------------------
@@ -58,3 +75,11 @@ void GhostController::addReplayTime(float time)
     m_all_times.push_back(time);
 
 }   // addReplayTime
+
+//-----------------------------------------------------------------------------
+void GhostController::action(PlayerAction action, int value)
+{
+    // Watching replay use only
+    if (action == PA_LOOK_BACK)
+        m_controls->m_look_back = (value!=0);
+}   // action

src/karts/controller/ghost_controller.hpp

@@ -55,7 +55,7 @@ public:
     virtual void setPosition(int p) {};
     virtual bool isPlayerController() const { return false; }
     virtual bool isLocalPlayerController() const { return false; }
-    virtual void action(PlayerAction action, int value) {};
+    virtual void action(PlayerAction action, int value) OVERRIDE;
     virtual void skidBonusTriggered() {};
     virtual void newLap(int lap) {};
     void         addReplayTime(float time);