Registry.cpp

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#include "Registry.hpp"
 
namespace galaxy
{
    Registry::Registry() noexcept
    {
    }
 
    Registry::Registry(Registry&& r) noexcept
    {
        this->m_entt = std::move(r.m_entt);
    }
 
    Registry& Registry::operator=(Registry&& r) noexcept
    {
        if (this != &r)
        {
            this->m_entt = std::move(r.m_entt);
        }
 
        return *this;
    }
 
    Registry::~Registry() noexcept
    {
    }
} // namespace galaxy
 
// Registry::Registry()
//{
//  // Handle on_* events.
//  m_entt.on_construct<components::RigidBody>().connect<&Registry::construct_rigidbody>(this);
//  m_entt.on_destroy<components::RigidBody>().connect<&Registry::destroy_rigidbody>(this);
//  m_entt.on_construct<components::Script>().connect<&Registry::construct_script>(this);
//  m_entt.on_destroy<components::Script>().connect<&Registry::destruct_script>(this);
//  m_entt.on_construct<flags::Disabled>().connect<&Registry::disable_entity>(this);
//  m_entt.on_destroy<flags::Disabled>().connect<&Registry::enable_entity>(this);
// }
 
// entt::entity Registry::create()
//{
//  const auto entity = m_entt.create();
 
//  m_entt.emplace<flags::Disabled>(entity);
 
//  auto& tag = m_entt.emplace<components::Tag>(entity);
//  tag.m_tag = "Untagged";
 
//  return entity;
//}
 
// entt::entity Registry::create_from_prefab(const std::string& name)
//{
//  auto& prefabs = core::ServiceLocator<resource::Prefabs>::ref();
//  if (prefabs.has(name))
//  {
//      return prefabs.get(name)->to_entity(m_entt);
//  }
//  else
//  {
//      GALAXY_LOG(GALAXY_WARNING, "Tried to load missing prefab '{0}'.", name);
//      return entt::null;
//  }
// }
 
// bool Registry::is_valid(const entt::entity entity)
//{
//  auto& em = core::ServiceLocator<meta::EntityMeta>::ref();
 
//  for (const auto& hash : em.get_validation_list())
//  {
//      if (!(em.get_validations().at(hash)(entity, m_entt)))
//      {
//          return false;
//      }
//  }
 
//  return true;
//}
 
// void Registry::update(b2World& b2World)
//{
//  for (const auto& [rigidbody, transform] : m_bodies_to_construct)
//  {
//      b2BodyDef def {};
//      def.position.x    = transform->m_tf.get_pos().x / GALAXY_WORLD_TO_BOX;
//      def.position.y    = transform->m_tf.get_pos().y / GALAXY_WORLD_TO_BOX;
//      def.angle         = glm::radians(transform->m_tf.get_rotation());
//      def.type          = rigidbody->m_type;
//      def.fixedRotation = rigidbody->m_fixed_rotation;
//      def.bullet        = rigidbody->m_bullet;
 
//      rigidbody->m_body = b2World.CreateBody(&def);
 
//      b2PolygonShape shape;
//      shape.SetAsBox(rigidbody->m_shape.x, rigidbody->m_shape.y);
 
//      b2FixtureDef fixture;
//      fixture.shape                = &shape;
//      fixture.density              = rigidbody->m_density;
//      fixture.friction             = rigidbody->m_friction;
//      fixture.restitution          = rigidbody->m_restitution;
//      fixture.restitutionThreshold = rigidbody->m_restitution_threshold;
 
//      rigidbody->m_body->CreateFixture(&fixture);
//      rigidbody->m_world = &b2World;
//  }
 
//  m_bodies_to_construct.clear();
//}
 
// void Registry::clear()
//{
//  m_bodies_to_construct.clear();
//  m_entt.clear();
// }
 
// void Registry::construct_rigidbody(entt::registry& registry, entt::entity entity)
//{
//  auto transform = registry.try_get<components::Transform>(entity);
//  if (!transform)
//  {
//      transform = &registry.emplace<components::Transform>(entity);
//  }
 
//  m_bodies_to_construct.emplace_back(&registry.get<components::RigidBody>(entity), transform);
//}
 
// void Registry::destroy_rigidbody(entt::registry& registry, entt::entity entity)
//{
//  auto& rigidbody = registry.get<components::RigidBody>(entity);
 
//  if (rigidbody.m_body != nullptr)
//  {
//      rigidbody.m_world->DestroyBody(rigidbody.m_body);
 
//      rigidbody.m_body  = nullptr;
//      rigidbody.m_world = nullptr;
//  }
//}
 
// void Registry::construct_script(entt::registry& registry, entt::entity entity)
//{
//  auto& script = registry.get<components::Script>(entity);
//  auto& state  = core::ServiceLocator<sol::state>::ref();
 
//  auto result = state.load_file(script.file());
//  if (result.valid())
//  {
//      script.m_self = result.call();
 
//      if (script.m_self.valid())
//      {
//          script.m_update = script.m_self["update"];
 
//          if (!script.m_update.valid())
//          {
//              GALAXY_LOG(GALAXY_ERROR, "Update function not present in '{0}'.", script.file());
//          }
 
//          script.m_self["owner"] = std::ref(registry);
//          script.m_self["id"]    = sol::readonly_property([entity] {
// return entity;
// });
 
//          sol::function init = script.m_self["construct"];
//          if (init.valid())
//          {
//              init(script.m_self);
//          }
//      }
//      else
//      {
//          GALAXY_LOG(GALAXY_ERROR, "Failed to validate script '{0}'. Make sure its in the correct format.", script.file());
//      }
//  }
//  else
//  {
//      GALAXY_LOG(GALAXY_ERROR, "Failed to load script '{0}' because '{1}'.", script.file(), magic_enum::enum_name(result.status()));
//  }
//}
 
// void Registry::destruct_script(entt::registry& registry, entt::entity entity)
//{
//  auto& script = registry.get<components::Script>(entity);
 
//  if (script.m_self.valid())
//  {
//      sol::function destruct = script.m_self["destruct"];
//      if (destruct.valid())
//      {
//          destruct(script.m_self);
//      }
 
//      script.m_self.abandon();
//  }
//}
 
// void Registry::construct_nui(entt::registry& registry, entt::entity entity)
//{
//  auto& ui    = registry.get<components::GUI>(entity);
//  auto& state = entt::locator<sol::state>::value();
//  auto& nui   = entt::locator<ui::NuklearUI>::value();
//  auto& fs    = entt::locator<fs::VirtualFileSystem>::value();
 
//  const auto script = fs.read(ui.file());
//  if (!script.empty())
//  {
//      auto result = state.load(script);
 
//      if (result.valid())
//      {
//          ui.m_self = result.call();
 
//          if (ui.m_self.valid())
//          {
//              ui.m_self["ctx"] = nui.ctx();
//              ui.m_update      = ui.m_self["do_ui"];
 
//              if (!ui.m_update.valid())
//              {
//                  GALAXY_LOG(GALAXY_ERROR, "Update function not present in ui script '{0}'.", ui.file());
//              }
//          }
//          else
//          {
//              GALAXY_LOG(GALAXY_ERROR, "Failed to validate ui script '{0}'. Make sure its in the correct format.", ui.file());
//          }
//      }
//      else
//      {
//          GALAXY_LOG(GALAXY_ERROR, "Failed to load ui script '{0}' because '{1}'.", ui.file(), magic_enum::enum_name(result.status()));
//      }
//  }
//  else
//  {
//      GALAXY_LOG(GALAXY_ERROR, "Failed to read script '{0}'.", ui.file());
//  }
//}
 
// void Registry::destruct_nui(entt::registry& registry, entt::entity entity)
//{
//  auto& ui = registry.get<components::GUI>(entity);
//  if (ui.m_self.valid())
//  {
//      ui.m_self.abandon();
//  }
// }
 
// void Registry::enable_entity(entt::registry& registry, entt::entity entity)
//{
//  auto rb = registry.try_get<components::RigidBody>(entity);
//  if (rb)
//  {
//      rb->m_body->SetEnabled(true);
//  }
// }
 
// void Registry::disable_entity(entt::registry& registry, entt::entity entity)
//{
//  auto rb = registry.try_get<components::RigidBody>(entity);
//  if (rb)
//  {
//      rb->m_body->SetEnabled(false);
//  }
// }