added GPL copyrights

[physics.git] / src / Effects / Gravity.cpp

diff --git a/src/Effects/Gravity.cpp b/src/Effects/Gravity.cpp
index d7852d3..85fd46c 100644 (file)
--- a/src/Effects/Gravity.cpp
+++ b/src/Effects/Gravity.cpp
@@ -1,5 +1,25 @@
+/*
+ *  Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "Gravity.h"
 
+
+/// ***** Constructors/Destructors *****
+
 Gravity::Gravity()
 {
 
@@ -9,17 +29,9 @@ Gravity::~Gravity()
 
 }
 
-Vector2 Gravity::positionDelta(const PhysicsEntity*, float)
-{
-    return Vector2(0, 0);
-}
-
-Vector2 Gravity::velocityDelta(const PhysicsEntity*, float)
-{
-    return Vector2(0, 0);
-}
+/// ***** Public Class Methods *****
 
-Vector2 Gravity::forceDelta(const PhysicsEntity*, float)
+Vector2 Gravity::forceDelta(const PhysicsEntity*, float) const
 {
-    return Vector2(0, 0.000001);
+    return Vector2(0, 0.001);
 }