Bind wireframe mode to the home key

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@12841 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/input/input_manager.cpp

@@ -37,6 +37,7 @@
 #include "states_screens/state_manager.hpp"
 #include "utils/string_utils.hpp"
 
+#include <ISceneManager.h>
 #include <ISceneNode.h>
 
 #include <map>
@@ -281,6 +282,17 @@ void InputManager::handleStaticAction(int key, int value)
                 UserConfigParams::m_profiler_enabled =
                                          !UserConfigParams::m_profiler_enabled;
             break;
+        case KEY_HOME:
+            if (value)
+            {
+                video::SOverrideMaterial &mat =
+                    irr_driver->getVideoDriver()->getOverrideMaterial();
+
+                mat.Material.Wireframe ^= 1;
+                mat.EnableFlags = video::EMF_WIREFRAME;
+                mat.EnablePasses = scene::ESNRP_SOLID | scene::ESNRP_TRANSPARENT;
+            }
+            break;
         default:
             break;
     } // switch