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Diffstat (limited to 'deps/include/entt/entity/entity.hpp')
| -rw-r--r-- | deps/include/entt/entity/entity.hpp | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/deps/include/entt/entity/entity.hpp b/deps/include/entt/entity/entity.hpp deleted file mode 100644 index f9a2454..0000000 --- a/deps/include/entt/entity/entity.hpp +++ /dev/null @@ -1,388 +0,0 @@ -#ifndef ENTT_ENTITY_ENTITY_HPP
-#define ENTT_ENTITY_ENTITY_HPP
-
-#include <cstddef>
-#include <cstdint>
-#include <type_traits>
-#include "../config/config.h"
-#include "../core/bit.hpp"
-#include "fwd.hpp"
-
-namespace entt {
-
-/*! @cond TURN_OFF_DOXYGEN */
-namespace internal {
-
-template<typename, typename = void>
-struct entt_traits;
-
-template<typename Type>
-struct entt_traits<Type, std::enable_if_t<std::is_enum_v<Type>>>
- : entt_traits<std::underlying_type_t<Type>> {
- using value_type = Type;
-};
-
-template<typename Type>
-struct entt_traits<Type, std::enable_if_t<std::is_class_v<Type>>>
- : entt_traits<typename Type::entity_type> {
- using value_type = Type;
-};
-
-template<>
-struct entt_traits<std::uint32_t> {
- using value_type = std::uint32_t;
-
- using entity_type = std::uint32_t;
- using version_type = std::uint16_t;
-
- static constexpr entity_type entity_mask = 0xFFFFF;
- static constexpr entity_type version_mask = 0xFFF;
-};
-
-template<>
-struct entt_traits<std::uint64_t> {
- using value_type = std::uint64_t;
-
- using entity_type = std::uint64_t;
- using version_type = std::uint32_t;
-
- static constexpr entity_type entity_mask = 0xFFFFFFFF;
- static constexpr entity_type version_mask = 0xFFFFFFFF;
-};
-
-} // namespace internal
-/*! @endcond */
-
-/**
- * @brief Common basic entity traits implementation.
- * @tparam Traits Actual entity traits to use.
- */
-template<typename Traits>
-class basic_entt_traits {
- static constexpr auto length = popcount(Traits::entity_mask);
-
- static_assert(Traits::entity_mask && ((Traits::entity_mask & (Traits::entity_mask + 1)) == 0), "Invalid entity mask");
- static_assert((Traits::version_mask & (Traits::version_mask + 1)) == 0, "Invalid version mask");
-
-public:
- /*! @brief Value type. */
- using value_type = typename Traits::value_type;
- /*! @brief Underlying entity type. */
- using entity_type = typename Traits::entity_type;
- /*! @brief Underlying version type. */
- using version_type = typename Traits::version_type;
-
- /*! @brief Entity mask size. */
- static constexpr entity_type entity_mask = Traits::entity_mask;
- /*! @brief Version mask size */
- static constexpr entity_type version_mask = Traits::version_mask;
-
- /**
- * @brief Converts an entity to its underlying type.
- * @param value The value to convert.
- * @return The integral representation of the given value.
- */
- [[nodiscard]] static constexpr entity_type to_integral(const value_type value) noexcept {
- return static_cast<entity_type>(value);
- }
-
- /**
- * @brief Returns the entity part once converted to the underlying type.
- * @param value The value to convert.
- * @return The integral representation of the entity part.
- */
- [[nodiscard]] static constexpr entity_type to_entity(const value_type value) noexcept {
- return (to_integral(value) & entity_mask);
- }
-
- /**
- * @brief Returns the version part once converted to the underlying type.
- * @param value The value to convert.
- * @return The integral representation of the version part.
- */
- [[nodiscard]] static constexpr version_type to_version(const value_type value) noexcept {
- if constexpr(Traits::version_mask == 0u) {
- return version_type{};
- } else {
- return (static_cast<version_type>(to_integral(value) >> length) & version_mask);
- }
- }
-
- /**
- * @brief Returns the successor of a given identifier.
- * @param value The identifier of which to return the successor.
- * @return The successor of the given identifier.
- */
- [[nodiscard]] static constexpr value_type next(const value_type value) noexcept {
- const auto vers = to_version(value) + 1;
- return construct(to_integral(value), static_cast<version_type>(vers + (vers == version_mask)));
- }
-
- /**
- * @brief Constructs an identifier from its parts.
- *
- * If the version part is not provided, a tombstone is returned.<br/>
- * If the entity part is not provided, a null identifier is returned.
- *
- * @param entity The entity part of the identifier.
- * @param version The version part of the identifier.
- * @return A properly constructed identifier.
- */
- [[nodiscard]] static constexpr value_type construct(const entity_type entity, const version_type version) noexcept {
- if constexpr(Traits::version_mask == 0u) {
- return value_type{entity & entity_mask};
- } else {
- return value_type{(entity & entity_mask) | (static_cast<entity_type>(version & version_mask) << length)};
- }
- }
-
- /**
- * @brief Combines two identifiers in a single one.
- *
- * The returned identifier is a copy of the first element except for its
- * version, which is taken from the second element.
- *
- * @param lhs The identifier from which to take the entity part.
- * @param rhs The identifier from which to take the version part.
- * @return A properly constructed identifier.
- */
- [[nodiscard]] static constexpr value_type combine(const entity_type lhs, const entity_type rhs) noexcept {
- if constexpr(Traits::version_mask == 0u) {
- return value_type{lhs & entity_mask};
- } else {
- return value_type{(lhs & entity_mask) | (rhs & (version_mask << length))};
- }
- }
-};
-
-/**
- * @brief Entity traits.
- * @tparam Type Type of identifier.
- */
-template<typename Type>
-struct entt_traits: basic_entt_traits<internal::entt_traits<Type>> {
- /*! @brief Base type. */
- using base_type = basic_entt_traits<internal::entt_traits<Type>>;
- /*! @brief Page size, default is `ENTT_SPARSE_PAGE`. */
- static constexpr std::size_t page_size = ENTT_SPARSE_PAGE;
-};
-
-/**
- * @brief Converts an entity to its underlying type.
- * @tparam Entity The value type.
- * @param value The value to convert.
- * @return The integral representation of the given value.
- */
-template<typename Entity>
-[[nodiscard]] constexpr typename entt_traits<Entity>::entity_type to_integral(const Entity value) noexcept {
- return entt_traits<Entity>::to_integral(value);
-}
-
-/**
- * @brief Returns the entity part once converted to the underlying type.
- * @tparam Entity The value type.
- * @param value The value to convert.
- * @return The integral representation of the entity part.
- */
-template<typename Entity>
-[[nodiscard]] constexpr typename entt_traits<Entity>::entity_type to_entity(const Entity value) noexcept {
- return entt_traits<Entity>::to_entity(value);
-}
-
-/**
- * @brief Returns the version part once converted to the underlying type.
- * @tparam Entity The value type.
- * @param value The value to convert.
- * @return The integral representation of the version part.
- */
-template<typename Entity>
-[[nodiscard]] constexpr typename entt_traits<Entity>::version_type to_version(const Entity value) noexcept {
- return entt_traits<Entity>::to_version(value);
-}
-
-/*! @brief Null object for all identifiers. */
-struct null_t {
- /**
- * @brief Converts the null object to identifiers of any type.
- * @tparam Entity Type of identifier.
- * @return The null representation for the given type.
- */
- template<typename Entity>
- [[nodiscard]] constexpr operator Entity() const noexcept {
- using traits_type = entt_traits<Entity>;
- constexpr auto value = traits_type::construct(traits_type::entity_mask, traits_type::version_mask);
- return value;
- }
-
- /**
- * @brief Compares two null objects.
- * @param other A null object.
- * @return True in all cases.
- */
- [[nodiscard]] constexpr bool operator==([[maybe_unused]] const null_t other) const noexcept {
- return true;
- }
-
- /**
- * @brief Compares two null objects.
- * @param other A null object.
- * @return False in all cases.
- */
- [[nodiscard]] constexpr bool operator!=([[maybe_unused]] const null_t other) const noexcept {
- return false;
- }
-
- /**
- * @brief Compares a null object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param entity Identifier with which to compare.
- * @return False if the two elements differ, true otherwise.
- */
- template<typename Entity>
- [[nodiscard]] constexpr bool operator==(const Entity entity) const noexcept {
- using traits_type = entt_traits<Entity>;
- return traits_type::to_entity(entity) == traits_type::to_entity(*this);
- }
-
- /**
- * @brief Compares a null object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param entity Identifier with which to compare.
- * @return True if the two elements differ, false otherwise.
- */
- template<typename Entity>
- [[nodiscard]] constexpr bool operator!=(const Entity entity) const noexcept {
- return !(entity == *this);
- }
-};
-
-/**
- * @brief Compares a null object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param lhs Identifier with which to compare.
- * @param rhs A null object yet to be converted.
- * @return False if the two elements differ, true otherwise.
- */
-template<typename Entity>
-[[nodiscard]] constexpr bool operator==(const Entity lhs, const null_t rhs) noexcept {
- return rhs.operator==(lhs);
-}
-
-/**
- * @brief Compares a null object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param lhs Identifier with which to compare.
- * @param rhs A null object yet to be converted.
- * @return True if the two elements differ, false otherwise.
- */
-template<typename Entity>
-[[nodiscard]] constexpr bool operator!=(const Entity lhs, const null_t rhs) noexcept {
- return !(rhs == lhs);
-}
-
-/*! @brief Tombstone object for all identifiers. */
-struct tombstone_t {
- /**
- * @brief Converts the tombstone object to identifiers of any type.
- * @tparam Entity Type of identifier.
- * @return The tombstone representation for the given type.
- */
- template<typename Entity>
- [[nodiscard]] constexpr operator Entity() const noexcept {
- using traits_type = entt_traits<Entity>;
- constexpr auto value = traits_type::construct(traits_type::entity_mask, traits_type::version_mask);
- return value;
- }
-
- /**
- * @brief Compares two tombstone objects.
- * @param other A tombstone object.
- * @return True in all cases.
- */
- [[nodiscard]] constexpr bool operator==([[maybe_unused]] const tombstone_t other) const noexcept {
- return true;
- }
-
- /**
- * @brief Compares two tombstone objects.
- * @param other A tombstone object.
- * @return False in all cases.
- */
- [[nodiscard]] constexpr bool operator!=([[maybe_unused]] const tombstone_t other) const noexcept {
- return false;
- }
-
- /**
- * @brief Compares a tombstone object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param entity Identifier with which to compare.
- * @return False if the two elements differ, true otherwise.
- */
- template<typename Entity>
- [[nodiscard]] constexpr bool operator==(const Entity entity) const noexcept {
- using traits_type = entt_traits<Entity>;
-
- if constexpr(traits_type::version_mask == 0u) {
- return false;
- } else {
- return (traits_type::to_version(entity) == traits_type::to_version(*this));
- }
- }
-
- /**
- * @brief Compares a tombstone object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param entity Identifier with which to compare.
- * @return True if the two elements differ, false otherwise.
- */
- template<typename Entity>
- [[nodiscard]] constexpr bool operator!=(const Entity entity) const noexcept {
- return !(entity == *this);
- }
-};
-
-/**
- * @brief Compares a tombstone object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param lhs Identifier with which to compare.
- * @param rhs A tombstone object yet to be converted.
- * @return False if the two elements differ, true otherwise.
- */
-template<typename Entity>
-[[nodiscard]] constexpr bool operator==(const Entity lhs, const tombstone_t rhs) noexcept {
- return rhs.operator==(lhs);
-}
-
-/**
- * @brief Compares a tombstone object and an identifier of any type.
- * @tparam Entity Type of identifier.
- * @param lhs Identifier with which to compare.
- * @param rhs A tombstone object yet to be converted.
- * @return True if the two elements differ, false otherwise.
- */
-template<typename Entity>
-[[nodiscard]] constexpr bool operator!=(const Entity lhs, const tombstone_t rhs) noexcept {
- return !(rhs == lhs);
-}
-
-/**
- * @brief Compile-time constant for null entities.
- *
- * There exist implicit conversions from this variable to identifiers of any
- * allowed type. Similarly, there exist comparison operators between the null
- * entity and any other identifier.
- */
-inline constexpr null_t null{};
-
-/**
- * @brief Compile-time constant for tombstone entities.
- *
- * There exist implicit conversions from this variable to identifiers of any
- * allowed type. Similarly, there exist comparison operators between the
- * tombstone entity and any other identifier.
- */
-inline constexpr tombstone_t tombstone{};
-
-} // namespace entt
-
-#endif
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