mirror of
https://github.com/minetest/minetest.git
synced 2024-12-04 21:43:44 +01:00
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
|
|
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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "voxelalgorithms.h"
|
|
#include "util/pointedthing.h"
|
|
|
|
//! Sorts PointedThings based on their distance.
|
|
struct RaycastSort
|
|
{
|
|
bool operator() (const PointedThing &pt1, const PointedThing &pt2) const;
|
|
};
|
|
|
|
//! Describes the state of a raycast.
|
|
class RaycastState
|
|
{
|
|
public:
|
|
/*!
|
|
* Creates a raycast.
|
|
* @param objects_pointable if false, only nodes will be found
|
|
* @param liquids pointable if false, liquid nodes won't be found
|
|
*/
|
|
RaycastState(const core::line3d<f32> &shootline, bool objects_pointable,
|
|
bool liquids_pointable);
|
|
|
|
//! Shootline of the raycast.
|
|
core::line3d<f32> m_shootline;
|
|
//! Iterator to store the progress of the raycast.
|
|
voxalgo::VoxelLineIterator m_iterator;
|
|
//! Previous tested node during the raycast.
|
|
v3s16 m_previous_node;
|
|
|
|
/*!
|
|
* This priority queue stores the found pointed things
|
|
* waiting to be returned.
|
|
*/
|
|
std::priority_queue<PointedThing, std::vector<PointedThing>, RaycastSort> m_found;
|
|
|
|
bool m_objects_pointable;
|
|
bool m_liquids_pointable;
|
|
|
|
//! The code needs to search these nodes around the center node.
|
|
core::aabbox3d<s16> m_search_range { 0, 0, 0, 0, 0, 0 };
|
|
|
|
//! If true, the Environment will initialize this state.
|
|
bool m_initialization_needed = true;
|
|
};
|
|
|
|
/*!
|
|
* 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);
|