mirror of
https://github.com/libretro/devilutionX.git
synced 2026-11-11 02:41:35 -10:00
Gleb Mazovetskiy
961866e1c4
The format is almost identical to CL2, except it uses the frame header to store frame width and height instead of 5 32-line offsets. This means we always have access to frame dimensions, so we can use it as an on-disk format for our graphics as well. Additionally, we may be able to optimize the rendering even more in the future now that we have guaranteed knowledge of frame dimensions.
82 lines
6.8 KiB
C++
82 lines
6.8 KiB
C++
#pragma once
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#include <type_traits>
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#include <utility>
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#include "appfat.h"
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#include "utils/stdcompat/optional.hpp"
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/// An optional that uses a field of the stored class and some value to store nullopt.
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#define DEFINE_INTRUSIVE_OPTIONAL_IMPL(OPTIONAL_CLASS, VALUE_CLASS, FIELD, NULL_VALUE, CONSTEXPR) \
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public: \
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CONSTEXPR OPTIONAL_CLASS() = default; \
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\
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template <class U = VALUE_CLASS> \
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CONSTEXPR OPTIONAL_CLASS(VALUE_CLASS &&value) \
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: value_(std::forward<U>(value)) \
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{ \
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} \
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\
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CONSTEXPR OPTIONAL_CLASS(std::nullopt_t) \
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: OPTIONAL_CLASS() \
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{ \
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} \
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\
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template <typename... Args> \
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CONSTEXPR VALUE_CLASS &emplace(Args &&...args) \
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{ \
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value_ = VALUE_CLASS(std::forward<Args>(args)...); \
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return value_; \
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} \
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\
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template <class U = VALUE_CLASS> \
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CONSTEXPR OPTIONAL_CLASS &operator=(VALUE_CLASS &&value) \
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{ \
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value_ = std::forward<U>(value); \
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return *this; \
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} \
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\
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CONSTEXPR OPTIONAL_CLASS &operator=(std::nullopt_t) \
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{ \
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value_ = VALUE_CLASS {}; \
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return *this; \
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} \
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\
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CONSTEXPR const VALUE_CLASS &operator*() const \
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{ \
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assert(value_.FIELD != NULL_VALUE); \
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return value_; \
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} \
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\
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CONSTEXPR VALUE_CLASS &operator*() \
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{ \
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assert(value_.FIELD != NULL_VALUE); \
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return value_; \
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} \
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\
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CONSTEXPR const VALUE_CLASS *operator->() const \
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{ \
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assert(value_.FIELD != NULL_VALUE); \
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return &value_; \
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} \
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\
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CONSTEXPR VALUE_CLASS *operator->() \
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{ \
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assert(value_.FIELD != NULL_VALUE); \
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return &value_; \
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} \
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\
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CONSTEXPR operator bool() const \
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{ \
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return value_.FIELD != NULL_VALUE; \
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} \
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\
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private: \
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VALUE_CLASS value_;
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#define DEFINE_CONSTEXPR_INTRUSIVE_OPTIONAL(OPTIONAL_CLASS, VALUE_CLASS, FIELD, NULL_VALUE) \
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DEFINE_INTRUSIVE_OPTIONAL_IMPL(OPTIONAL_CLASS, VALUE_CLASS, FIELD, NULL_VALUE, constexpr)
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#define DEFINE_INTRUSIVE_OPTIONAL(OPTIONAL_CLASS, VALUE_CLASS, FIELD, NULL_VALUE) \
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DEFINE_INTRUSIVE_OPTIONAL_IMPL(OPTIONAL_CLASS, VALUE_CLASS, FIELD, NULL_VALUE, )
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