1/**************************************************************************/
2/* godot_step_2d.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef GODOT_STEP_2D_H
32#define GODOT_STEP_2D_H
33
34#include "godot_space_2d.h"
35
36#include "core/templates/local_vector.h"
37
38class GodotStep2D {
39 uint64_t _step = 1;
40
41 int iterations = 0;
42 real_t delta = 0.0;
43
44 LocalVector<LocalVector<GodotBody2D *>> body_islands;
45 LocalVector<LocalVector<GodotConstraint2D *>> constraint_islands;
46 LocalVector<GodotConstraint2D *> all_constraints;
47
48 void _populate_island(GodotBody2D *p_body, LocalVector<GodotBody2D *> &p_body_island, LocalVector<GodotConstraint2D *> &p_constraint_island);
49 void _setup_constraint(uint32_t p_constraint_index, void *p_userdata = nullptr);
50 void _pre_solve_island(LocalVector<GodotConstraint2D *> &p_constraint_island) const;
51 void _solve_island(uint32_t p_island_index, void *p_userdata = nullptr) const;
52 void _check_suspend(LocalVector<GodotBody2D *> &p_body_island) const;
53
54public:
55 void step(GodotSpace2D *p_space, real_t p_delta);
56 GodotStep2D();
57 ~GodotStep2D();
58};
59
60#endif // GODOT_STEP_2D_H
61