scene.h

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#pragma once
#include <engine/engine_export.h>
 
#include "prefab.h"
#include <base/basetypes.hpp>
#include <context/context.hpp>
#include <engine/assets/asset_handle.h>
#include <entt/entt.hpp>
 
using namespace entt::literals;
 
namespace unravel
{
 
#define ENTT_TAG(name) entt::tag<name##_hs>
struct scene
{
    scene(const std::string& tag_name);
 
    ~scene();
 
    static auto get_all_scenes() -> const std::vector<scene*>&;
    auto load_from(const asset_handle<scene_prefab>& pfb) -> bool;
 
    void unload();
 
    auto instantiate_out(const asset_handle<prefab>& pfb, entt::handle& e) -> bool;
    auto instantiate(const asset_handle<prefab>& pfb) -> entt::handle;
    auto instantiate(const asset_handle<prefab>& pfb, entt::handle parent) -> entt::handle;
 
    void clear_entity(entt::handle& handle);
    auto create_handle(entt::entity e) -> entt::handle;
 
    auto create_handle(entt::entity e) const -> entt::const_handle;
 
    auto create_entity(const std::string& tag = {}, entt::handle parent = {}) -> entt::handle;
 
    auto clone_entity(entt::handle clone_from, bool keep_parent = true) -> entt::handle;
    void clone_entity(entt::handle& clone_to, entt::handle clone_from, bool keep_parent = true);
 
    static auto create_entity(entt::registry& r, const std::string& name = {}, entt::handle parent = {}) -> entt::handle;
 
    static void clone_scene(const scene& src_scene, scene& dst_scene);
 
    static auto find_entity_by_prefab_uuid(entt::handle root_entity, const hpp::uuid& target_uuid) -> entt::handle;
 
    asset_handle<scene_prefab> source;
 
    std::unique_ptr<entt::registry> registry{};
 
 
    std::string tag{};
};
 
#define TAG_COMPONENT(name) entt::tag<name##_hs>
 
} // namespace unravel