2 * Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "GravityWell.h"
19 #include "Entities/PhysicsEntity.h"
21 float wellGravity = 0.5;
23 /// ***** Constructors/Destructors *****
25 GravityWell::GravityWell(const Vector2& pos)
30 GravityWell::~GravityWell()
35 /// ***** Public Class Methods *****
37 Vector2 GravityWell::forceDelta(const PhysicsEntity* e, float) const
39 const Vector2& pos = e->positionRaw();
42 Vector2 delta = position - pos;
43 float sqrDist = delta.sqrLength();
48 acc += delta / sqrDist * mass * wellGravity;
53 void GravityWell::setPosition(const Vector2& pos)