X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fphysic.cpp;h=518ce8349b7556cb1bcca0b222198feb5d5b2f68;hb=3e89eb527d5f3bca2cb8cd219784048764a148f5;hp=329418a6e98ffb65cb712054214e6af3e830e68a;hpb=02288dc76442bd6616a200a2d22c0954d2fc8180;p=supertux.git

diff --git a/src/physic.cpp b/src/physic.cpp
index 329418a6e..518ce8349 100644
--- a/src/physic.cpp
+++ b/src/physic.cpp
@@ -1,7 +1,8 @@
 //  $Id$
-// 
+//
 //  SuperTux
 //  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
+//  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
@@ -12,7 +13,7 @@
 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 //  GNU General Public License for more details.
-// 
+//
 //  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
@@ -46,14 +47,14 @@ Physic::set_velocity_x(float nvx)
 void
 Physic::set_velocity_y(float nvy)
 {
-  vy = -nvy;
+  vy = nvy;
 }
 
 void
 Physic::set_velocity(float nvx, float nvy)
 {
   vx = nvx;
-  vy = -nvy;
+  vy = nvy;
 }
 
 void
@@ -82,13 +83,13 @@ Physic::get_velocity_x() const
 float
 Physic::get_velocity_y() const
 {
-    return -vy;
+    return vy;
 }
 
 Vector
 Physic::get_velocity() const
 {
-  return Vector(vx, -vy);
+  return Vector(vx, vy);
 }
 
 void
@@ -100,14 +101,14 @@ Physic::set_acceleration_x(float nax)
 void
 Physic::set_acceleration_y(float nay)
 {
-  ay = -nay;
+  ay = nay;
 }
 
 void
 Physic::set_acceleration(float nax, float nay)
 {
   ax = nax;
-  ay = -nay;
+  ay = nay;
 }
 
 float
@@ -119,13 +120,13 @@ Physic::get_acceleration_x() const
 float
 Physic::get_acceleration_y() const
 {
-  return -ay;
+  return ay;
 }
 
 Vector
 Physic::get_acceleration() const
 {
-  return Vector(ax, -ay);
+  return Vector(ax, ay);
 }
 
 void