X-Git-Url: http://gitweb.pgornicz.com/gitweb.cgi?a=blobdiff_plain;f=src%2FEffects%2FGravity.cpp;h=5c654519f09e55138e02b7718b17cad47d080c04;hb=3d1f081343dc603a3292538eeb9bd794b255deb6;hp=3d2cd0a5f8b483ca09aba8baef12bfe773e92d8c;hpb=cd8389935add9981ac03f058994a185e2208a32f;p=physics.git

diff --git a/src/Effects/Gravity.cpp b/src/Effects/Gravity.cpp
index 3d2cd0a..5c65451 100644
--- a/src/Effects/Gravity.cpp
+++ b/src/Effects/Gravity.cpp
@@ -1,13 +1,42 @@
+/*
+ *  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"
 
-/// ***** Header Class *****
-Vector2 Gravity::positionAfter(const Vector2&, float)
+#include "Entities/PhysicsEntity.h"
+
+/// ***** Private Variables *****
+
+float forceGravity = 0.001;
+
+/// ***** Constructors/Destructors *****
+
+Gravity::Gravity()
 {
 
 }
-Vector2 Gravity::velocityAfter(const Vector2&, float)
+Gravity::~Gravity()
 {
 
 }
 
-#endif // GRAVITY_H
+/// ***** Public Class Methods *****
+
+Vector2 Gravity::forceDelta(const PhysicsEntity* e, float) const
+{
+    return Vector2(0, e->mass * forceGravity);
+}