godot/modules/navigation/nav_utils.h

/**************************************************************************/
/*  nav_utils.h                                                           */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#ifndef NAV_UTILS_H
#define NAV_UTILS_H

#include "core/math/vector3.h"
#include "core/templates/hash_map.h"
#include "core/templates/hashfuncs.h"
#include "core/templates/local_vector.h"

class NavBase;

namespace gd {
struct Polygon;

PointKey;

struct EdgeKey { … };

struct Point { … };

struct Edge { … };

struct Polygon { … };

struct NavigationPoly { … };

struct NavPolyTravelCostGreaterThan { … };

struct NavPolyHeapIndexer { … };

struct ClosestPointQueryResult { … };

template <typename T>
struct NoopIndexer { … };

/**
 * A max-heap implementation that notifies of element index changes.
 */
template <typename T, typename LessThan = Comparator<T>, typename Indexer = NoopIndexer<T>>
class Heap {
	LocalVector<T> _buffer;

	LessThan _less_than;
	Indexer _indexer;

public:
	void reserve(uint32_t p_size) { … }

	uint32_t size() const { … }

	bool is_empty() const { … }

	void push(const T &p_element) { … }

	T pop() { … }

	/**
	 * Update the position of the element in the heap if necessary.
	 */
	void shift(uint32_t p_index) { … }

	void clear() { … }

	Heap() { … }

	Heap(const LessThan &p_less_than) : … { … }

	Heap(const Indexer &p_indexer) : … { … }

	Heap(const LessThan &p_less_than, const Indexer &p_indexer) : … { … }

private:
	bool _shift_up(uint32_t p_index) { … }

	bool _shift_down(uint32_t p_index) { … }
};
} // namespace gd

#endif // NAV_UTILS_H