palette_index.hpp

Go to the documentation of this file.

#pragma once
 
// ReSharper disable once CppUnusedIncludeDirective
#include <compare>
#include <cstddef>
#include <string>
 
#include "porytiles/utilities/panic/panic.hpp"
 
namespace porytiles {
 
inline constexpr std::size_t colors_per_palette = 16;
 
class PaletteIndex {
  public:
    // NOLINTNEXTLINE(google-explicit-constructor)
    PaletteIndex(std::size_t value) : value_{value}
    {
        if (value >= colors_per_palette) {
            panic("invalid PaletteIndex value " + std::to_string(value));
        }
    }
 
    auto operator<=>(const PaletteIndex &) const = default;
 
    // NOLINTNEXTLINE
    operator const std::size_t &() const &
    {
        return value_;
    }
 
    // NOLINTNEXTLINE
    operator std::size_t &&() &&
    {
        return std::move(value_);
    }
 
    [[nodiscard]] const std::size_t &value() const &
    {
        return value_;
    }
 
    [[nodiscard]] std::size_t &&value() &&
    {
        return std::move(value_);
    }
 
    [[nodiscard]] std::size_t index() const
    {
        return value_;
    }
 
  private:
    std::size_t value_{};
};
 
} // namespace porytiles