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generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 00:23:49 +0000
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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.
*/

#include "raycast.h"
#include "irr_v3d.h"
#include "irr_aabb3d.h"
#include "constants.h"

bool RaycastSort::operator() (const PointedThing &pt1,
	const PointedThing &pt2) const
{
	// "nothing" can not be sorted
	assert(pt1.type != POINTEDTHING_NOTHING);
	assert(pt2.type != POINTEDTHING_NOTHING);
	// returns false if pt1 is nearer than pt2
	if (pt1.distanceSq < pt2.distanceSq) {
		return false;
	}

	if (pt1.distanceSq == pt2.distanceSq) {
		// Sort them to allow only one order
		if (pt1.type == POINTEDTHING_OBJECT)
			return (pt2.type == POINTEDTHING_OBJECT
				&& pt1.object_id < pt2.object_id);

		return (pt2.type == POINTEDTHING_OBJECT
				|| pt1.node_undersurface < pt2.node_undersurface);
	}
	return true;
}


RaycastState::RaycastState(const core::line3d<f32> &shootline,
	bool objects_pointable, bool liquids_pointable) :
	m_shootline(shootline),
	m_iterator(shootline.start / BS, shootline.getVector() / BS),
	m_previous_node(m_iterator.m_current_node_pos),