Allow rescue to be triggered even when the wheels are not on the ground

(the kart might get stuck sitting on a wall with all wheels in the air).
See r1940 on 0.5rc1.


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1942 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/player_kart.cpp

@@ -178,13 +178,11 @@ void PlayerKart::update(float dt)
         m_collectable.use() ;
         m_controls.fire = false;
     }
-#ifdef DEBUG
-    // Allow rescuing while still falling ... it's convenient for debugging, but
-    // not for a release
+
+    // We can't restrict rescue to fulfil isOnGround() (which would be more like
+    // MK), since e.g. in the City track it is possible for the kart to end
+    // up sitting on a brick wall, with all wheels in the air :((
     if ( m_controls.rescue )
-#else
-    if ( isOnGround()  &&  m_controls.rescue )
-#endif
     {
         sound_manager -> playSfx ( SOUND_BEEP ) ;
         forceRescue();