98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
/**************************************************************************/
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/* polygon_path_finder.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef POLYGON_PATH_FINDER_H
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#define POLYGON_PATH_FINDER_H
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#include "core/io/resource.h"
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class PolygonPathFinder : public Resource {
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GDCLASS(PolygonPathFinder, Resource);
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struct Point {
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Vector2 pos;
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HashSet<int> connections;
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float distance = 0.0;
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float penalty = 0.0;
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int prev = 0;
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};
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union Edge {
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struct {
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int32_t points[2];
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};
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uint64_t key = 0;
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_FORCE_INLINE_ bool operator==(const Edge &p_edge) const {
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return key == p_edge.key;
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}
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_FORCE_INLINE_ static uint32_t hash(const Edge &p_edge) {
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return hash_one_uint64(p_edge.key);
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}
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Edge(int a = 0, int b = 0) {
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if (a > b) {
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SWAP(a, b);
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}
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points[0] = a;
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points[1] = b;
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}
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};
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Vector2 outside_point;
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Rect2 bounds;
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Vector<Point> points;
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HashSet<Edge, Edge> edges;
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bool _is_point_inside(const Vector2 &p_point) const;
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void _set_data(const Dictionary &p_data);
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Dictionary _get_data() const;
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protected:
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static void _bind_methods();
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public:
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void setup(const Vector<Vector2> &p_points, const Vector<int> &p_connections);
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Vector<Vector2> find_path(const Vector2 &p_from, const Vector2 &p_to);
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void set_point_penalty(int p_point, float p_penalty);
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float get_point_penalty(int p_point) const;
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bool is_point_inside(const Vector2 &p_point) const;
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Vector2 get_closest_point(const Vector2 &p_point) const;
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Vector<Vector2> get_intersections(const Vector2 &p_from, const Vector2 &p_to) const;
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Rect2 get_bounds() const;
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PolygonPathFinder();
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};
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#endif // POLYGON_PATH_FINDER_H
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