Bugfix: direct hits of karts by projectiles were not recognised due to

using an incorrect pointer. This could lead to karts being pushed through
the track.


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1705 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/physics.cpp

@@ -119,7 +119,7 @@ void Physics::update(float dt)
             }
             else if(p->b->is(UserPointer::UP_KART))   // projectile hit kart
             {
-                p->a->getPointerFlyable()->explode((Kart*)(p->b));
+                p->a->getPointerFlyable()->explode(p->b->getPointerKart());
             }
             else                                     // projectile hits projectile
             {