fix cr/lfs and remove trailing whitespaces...

[supertux.git] / src / math / vector.hpp

diff --git a/src/math/vector.hpp b/src/math/vector.hpp
index 38c1204..817bb4d 100644 (file)
--- a/src/math/vector.hpp
+++ b/src/math/vector.hpp
@@ -1,7 +1,7 @@
 //  $Id$
 //
-//  SuperTux -  A Jump'n Run
-//  Copyright (C) 2004 Matthias Braun <matze@braunis.de>
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
 //
 //  This program is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU General Public License
@@ -16,6 +16,7 @@
 //  You should have received a copy of the GNU General Public License
 //  along with this program; if not, write to the Free Software
 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
 #ifndef SUPERTUX_VECTOR_H
 #define SUPERTUX_VECTOR_H
 
@@ -82,6 +83,13 @@ public:
     return *this;
   }
 
+  const Vector& operator -=(const Vector& other)
+  {
+    x -= other.x;
+    y -= other.y;
+    return *this;
+  }
+
   const Vector& operator *=(float val)
   {
     x *= val;
@@ -112,4 +120,3 @@ public:
 };
 
 #endif
-