4 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 #ifndef __COLLISION_H__
21 #define __COLLISION_H__
24 #include "collision_hit.hpp"
38 float infinity = (std::numeric_limits<float>::has_infinity ? std::numeric_limits<float>::infinity() : std::numeric_limits<float>::max());
45 bool has_constraints() const {
46 float infinity = (std::numeric_limits<float>::has_infinity ? std::numeric_limits<float>::infinity() : std::numeric_limits<float>::max());
47 return left > -infinity || right < infinity
48 || top > -infinity || bottom < infinity;
55 Vector ground_movement;
59 /** checks if 2 rectangle intersect each other */
60 bool intersects(const Rect& r1, const Rect& r2);
62 /** does collision detection between a rectangle and an axis aligned triangle
63 * Returns true in case of a collision and fills in the hit structure then.
65 bool rectangle_aatriangle(Constraints* constraints, const Rect& rect,
66 const AATriangle& triangle);
68 void set_rectangle_rectangle_constraints(Constraints* constraints,
69 const Rect& r1, const Rect& r2);