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Creating a basic view

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This commit is contained in:
Zoe Roux
2021-06-03 22:42:38 +02:00
parent 0d37a560d7
commit a11bd21ec3
15 changed files with 121 additions and 63 deletions
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lib/wal/sources/Scene/Scene.cpp
+19 -4
View File
@@ -21,13 +21,28 @@ namespace WAL
return this->_entities.emplace_back(*this, name);
}
void Scene::_componentAdded(const Entity &entity, std::type_index type)
void Scene::_componentAdded(Entity &entity, const std::type_index &type)
{
for (auto &view : this->_views) {
if (std::find(view->types.begin(), view->types.end(), type) == view->types.end())
continue;
bool valid = std::all_of(view->types.begin(), view->types.end(), [&entity](const auto &type){
return entity.hasComponent(type);
});
if (valid)
view->entities.emplace_back(entity);
}
}
void Scene::_componentRemoved(const Entity &entity, std::type_index type)
void Scene::_componentRemoved(const Entity &entity, const std::type_index &type)
{
for (auto &view : this->_views) {
if (std::find(view->types.begin(), view->types.end(), type) == view->types.end())
continue;
view->entities.erase(std::remove_if(view->entities.begin(), view->entities.end(), [&entity](const auto &ref)
{
return &ref.get() == &entity;
}), view->entities.end());
}
}
} // namespace WAL
lib/wal/sources/Scene/Scene.hpp
+11 -25
View File
@@ -3,11 +3,11 @@
//
#ifndef WAL_SCENE
#define WAL_SCENE
#pragma once
#include <vector>
#include <functional>
#include <View/BaseView.hpp>
#include "Entity/Entity.hpp"
namespace WAL
@@ -18,15 +18,17 @@ namespace WAL
private:
//! @brief The list of registered entities
std::vector<Entity> _entities = {};
//! @brief The list of cached views to update.
std::vector<std::shared_ptr<BaseView>> _views = {};
//! @brief Notify this scene that a component has been added to the given entity.
//! @param entity The entity with the new component
//! @param type The type of the component added.
void _componentAdded(const Entity &entity, std::type_index type);
void _componentAdded(Entity &entity, const std::type_index &type);
//! @brief Notify this scene that a component has been removed to the given entity.
//! @param entity The entity with the removed component
//! @param type The type of the component removed.
void _componentRemoved(const Entity &entity, std::type_index type);
void _componentRemoved(const Entity &entity, const std::type_index &type);
public:
//! @brief Get the list of entities.
std::vector<Entity> &getEntities();
@@ -37,25 +39,13 @@ namespace WAL
Entity &addEntity(const std::string &name);
template<typename ...Components>
std::vector<std::reference_wrapper<Entity>> &view()
View<Components...> &view()
{
return this->view(typeid(Components)...);
static auto view = std::make_shared<View<Components...>>(this->_entities);
this->_views.emplace_back(view);
return *view;
}
#pragma clang diagnostic push
#pragma ide diagnostic ignored "NotImplementedFunctions"
template<typename ...Components>
std::vector<std::reference_wrapper<Entity>> &view(const Components &...index) requires(std::is_same_v<Components...>)
{
static std::vector<std::reference_wrapper<Entity>> view;
std::copy_if(this->_entities.begin(), this->_entities.end(), std::back_inserter(view), [&index...](Entity &entity) {
return (entity.hasComponent(index) && ...);
});
return view;
}
#pragma clang diagnostic pop
//! @brief A default constructor
Scene() = default;
//! @brief A scene is copy constructable
@@ -68,8 +58,4 @@ namespace WAL
friend Entity;
};
} // namespace WAL
#else
#endif
} // namespace WAL