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+/*
+Minetest
+Copyright (C) 2016 juhdanad, Daniel Juhasz <juhdanad@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef SRC_RAYCAST_H_
+#define SRC_RAYCAST_H_
+
+
+/*!
+ * Checks if a line and a box intersects.
+ * @param[in] box box to test collision
+ * @param[in] start starting point of the line
+ * @param[in] dir direction and length of the line
+ * @param[out] collision_point first point of the collision
+ * @param[out] collision_normal normal vector at the collision, points
+ * outwards of the surface. If start is in the box, zero vector.
+ * @returns true if a collision point was found
+ */
+bool boxLineCollision(const aabb3f &box, const v3f &start, const v3f &dir,
+ v3f *collision_point, v3s16 *collision_normal);
+
+
+#endif /* SRC_RAYCAST_H_ */