2022-09-26 21:08:59 +08:00
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#include "SHpch.h"
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#include "SHSerializationHelper.hpp"
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2022-09-26 21:08:59 +08:00
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#include "SHSerialization.h"
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#include <yaml-cpp/yaml.h>
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#include "ECS_Base/Managers/SHEntityManager.h"
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#include "Scene/SHSceneManager.h"
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#include "Tools/SHException.h"
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#include "Math/Transform/SHTransformComponent.h"
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namespace SHADE
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{
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void SHSerialization::SerializeSceneToFile(std::filesystem::path const& path)
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{
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}
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std::string SHSerialization::SerializeSceneToString()
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{
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YAML::Emitter out;
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SerializeSceneToEmitter(out);
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return std::string(out.c_str());
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}
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void SHSerialization::SerializeSceneToEmitter(YAML::Emitter& out)
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{
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auto const& sceneGraph = SHSceneManager::GetCurrentSceneGraph();
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auto root = sceneGraph.GetRoot();
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SHASSERT(root != nullptr, "Root is null. Failed to serialize scene to node.");
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auto const& children = root->GetChildren();
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out << YAML::BeginDoc;
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auto pred = [&out](SHSceneNode* node){out << SerializeEntityToNode(node);};
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sceneGraph.Traverse(pred);
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//out << SerializeEntityToNode(child);
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out << YAML::EndDoc;
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}
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static void DeserializeEntity(YAML::iterator& it, YAML::Node const& node, std::vector<EntityID>& createdEntities, EntityID parentEID = MAX_EID)
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{
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if(!node[EIDNode])
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return;
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EntityID eid = node[EIDNode].as<EntityID>();
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std::string name = "Default";
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if(node[EntityNameNode])
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name = node[EntityNameNode].as<std::string>();
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//Compile component IDs
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const auto componentIDList = SHSerialization::GetComponentIDList(node[ComponentsNode]);
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eid = SHEntityManager::CreateEntity(componentIDList, eid, name, parentEID);
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createdEntities.push_back(eid);
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if(node[NumberOfChildrenNode])
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{ int numOfChildren = node[NumberOfChildrenNode].as<int>();
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for(int i = 0; i < numOfChildren; ++i)
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{
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DeserializeEntity(it, *it, createdEntities, eid);
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++it;
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}
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}
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}
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void SHSerialization::DeserializeSceneFromFile(std::string const& fileData)
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{
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YAML::Node entities = YAML::Load(fileData.c_str());
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std::vector<EntityID> createdEntities{};
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//Create Entities
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for(auto it = entities.begin(); it != entities.end(); ++it)
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{
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DeserializeEntity(it, (*it), createdEntities);
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}
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//Initialize Entity
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for(auto it = entities.begin(); it != entities.end(); ++it)
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{
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//For each node, Deserialize component
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//Recurse through properties
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}
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}
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std::string SHSerialization::SerializeEntityToString()
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{
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return std::string();
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}
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void SHSerialization::SerializeEntityToFile(std::filesystem::path const& path)
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{
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}
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YAML::Node SHSerialization::SerializeEntityToNode(SHSceneNode* sceneNode)
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{
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YAML::Node node;
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auto eid = sceneNode->GetEntityID();
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auto entity = SHEntityManager::GetEntityByID(eid);
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if (!sceneNode || !entity)
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{
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node = YAML::Null;
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return node;
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}
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node[EIDNode] = eid;
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node[EntityNameNode] = entity->name;
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node[IsActiveNode] = sceneNode->IsActive();
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auto const& children = sceneNode->GetChildren();
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node[NumberOfChildrenNode] = children.size();
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YAML::Node components;
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if (const auto transform = SHComponentManager::GetComponent_s<SHTransformComponent>(eid))
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{
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components[rttr::type::get<SHTransformComponent>().get_name().data()] = SHSerializationHelper::SerializeComponentToNode(transform);
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}
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node[ComponentsNode] = components;
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return node;
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}
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template<typename ComponentType, std::enable_if_t<std::is_base_of_v<SHComponent, ComponentType>, bool> = true>
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std::optional<ComponentTypeID> GetComponentID(YAML::Node const & componentNode)
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{
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if(componentNode[rttr::type::get<ComponentType>().get_name().data()])
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return {SHFamilyID<SHComponent>::GetID<ComponentType>()};
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else
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return std::nullopt;
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}
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std::vector<ComponentTypeID> SHSerialization::GetComponentIDList(YAML::Node const& componentsNode)
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{
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std::vector<ComponentTypeID> componentIDList;
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auto id = GetComponentID<SHTransformComponent>(componentsNode);
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if(id.has_value())
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componentIDList.push_back(id.value());
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return componentIDList;
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}
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}
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