hardness.hpp

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#pragma once
 
#include <array>
#include <cstdint>
#include <optional>
#include <string_view>
 
namespace physics {
 
enum class Hardness : uint8_t {
  soft,
  medium,
  hard,
};
 
inline constexpr std::array<std::string_view, 3> k_hardness_names {"soft", "medium", "hard"};
 
inline constexpr Hardness k_hardest = Hardness::hard;
 
[[nodiscard]]
constexpr auto hardnessName(Hardness hardness) -> std::string_view {
  const auto index = static_cast<size_t>(hardness);
  return index < k_hardness_names.size() ? k_hardness_names[index] : std::string_view {};
}
 
[[nodiscard]]
constexpr auto hardnessFromName(std::string_view name) -> std::optional<Hardness> {
  for (size_t i = 0; i < k_hardness_names.size(); ++i) {
    if (k_hardness_names[i] == name) {
      return static_cast<Hardness>(i);
    }
  }
  return std::nullopt;
}
 
[[nodiscard]]
constexpr auto canBreak(Hardness max_hardness, Hardness material) -> bool {
  return static_cast<uint8_t>(material) <= static_cast<uint8_t>(max_hardness);
}
 
}