feat(ecs): working on ecs module

modules/ecs/CMakeLists.txt

@@ -1,6 +1,6 @@
 ## shared sources between the module and his unit tests
 add_library(antara_ecs_shared_sources INTERFACE)
-target_sources(antara_ecs_shared_sources INTERFACE antara/gaming/ecs/base.system.cpp)
+target_sources(antara_ecs_shared_sources INTERFACE antara/gaming/ecs/base.system.cpp antara/gaming/ecs/system.manager.cpp)
 target_include_directories(antara_ecs_shared_sources INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries(antara_ecs_shared_sources INTERFACE EnTT strong_type)
 add_library(antara::ecs_shared_sources ALIAS antara_ecs_shared_sources)
@@ -15,7 +15,8 @@ add_library(antara::ecs ALIAS antara_ecs)
 add_executable(antara_ecs_tests)
 target_sources(antara_ecs_tests PUBLIC
         antara/gaming/ecs/antara.ecs.tests.cpp
-        antara/gaming/ecs/antara.ecs.system.tests.cpp)
+        antara/gaming/ecs/antara.ecs.system.tests.cpp
+        antara/gaming/ecs/antara.ecs.system.manager.tests.cpp)
 target_link_libraries(antara_ecs_tests PRIVATE doctest PUBLIC antara::ecs_shared_sources)
 set_target_properties(antara_ecs_tests
         PROPERTIES

modules/ecs/antara/gaming/ecs/antara.ecs.system.manager.tests.cpp

@@ -0,0 +1,55 @@
+/******************************************************************************
+ * Copyright © 2013-2019 The Komodo Platform Developers.                      *
+ *                                                                            *
+ * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
+ * the top-level directory of this distribution for the individual copyright  *
+ * holder information and the developer policies on copyright and licensing.  *
+ *                                                                            *
+ * Unless otherwise agreed in a custom licensing agreement, no part of the    *
+ * Komodo Platform software, including this file may be copied, modified,     *
+ * propagated or distributed except according to the terms contained in the   *
+ * LICENSE file                                                               *
+ *                                                                            *
+ * Removal or modification of this copyright notice is prohibited.            *
+ *                                                                            *
+ ******************************************************************************/
+
+#include <doctest/doctest.h>
+#include "antara/gaming/ecs/system.hpp"
+#include "antara/gaming/ecs/system.manager.hpp"
+
+class logic_concrete_system : public antara::gaming::ecs::logic_update_system<logic_concrete_system>
+{
+public:
+    logic_concrete_system(entt::registry &registry, entt::dispatcher &dispatcher) : system(registry, dispatcher)
+    {
+
+    }
+
+    logic_concrete_system() = default;
+
+    void update() noexcept final
+    {
+
+    }
+
+    ~logic_concrete_system() noexcept final = default;
+};
+
+namespace antara::gaming::ecs::tests
+{
+    TEST_SUITE ("system manager test suite")
+    {
+        entt::registry registry;
+        entt::dispatcher dispatcher;
+        system_manager manager{registry, dispatcher};
+
+        TEST_CASE ("add system")
+        {
+            CHECK_EQ(manager.nb_systems(), 0u);
+            manager.create_system<logic_concrete_system>();
+            CHECK_EQ(manager.nb_systems(), 1u);
+            CHECK_EQ(manager.nb_systems(logic_concrete_system::get_system_type()), 1u);
+        }
+    }
+}

modules/ecs/antara/gaming/ecs/system.manager.cpp

@@ -0,0 +1,44 @@
+/******************************************************************************
+ * Copyright © 2013-2019 The Komodo Platform Developers.                      *
+ *                                                                            *
+ * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
+ * the top-level directory of this distribution for the individual copyright  *
+ * holder information and the developer policies on copyright and licensing.  *
+ *                                                                            *
+ * Unless otherwise agreed in a custom licensing agreement, no part of the    *
+ * Komodo Platform software, including this file may be copied, modified,     *
+ * propagated or distributed except according to the terms contained in the   *
+ * LICENSE file                                                               *
+ *                                                                            *
+ * Removal or modification of this copyright notice is prohibited.            *
+ *                                                                            *
+ ******************************************************************************/
+
+#include "antara/gaming/ecs/system.manager.hpp"
+
+namespace antara::gaming::ecs
+{
+    system_manager::system_manager(entt::registry &registry, entt::dispatcher &dispatcher) noexcept : entity_registry_(
+            registry), dispatcher_(dispatcher)
+    {
+
+    }
+
+    std::size_t system_manager::nb_systems(system_type sys_type) const noexcept
+    {
+        return systems_[sys_type].size();
+    }
+
+    std::size_t system_manager::nb_systems() const noexcept
+    {
+        return std::accumulate(begin(systems_), end(systems_), static_cast<size_t>(0u),
+                               [](size_t accumulator, auto &&vec) {
+                                   return accumulator + vec.size();
+                               });
+    }
+
+    base_system &system_manager::add_system_(system_manager::system_ptr &&system, system_type sys_type) noexcept
+    {
+        return *systems_[sys_type].emplace_back(std::move(system));
+    }
+}

modules/ecs/antara/gaming/ecs/system.manager.hpp

@@ -0,0 +1,89 @@
+/******************************************************************************
+ * Copyright © 2013-2019 The Komodo Platform Developers.                      *
+ *                                                                            *
+ * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
+ * the top-level directory of this distribution for the individual copyright  *
+ * holder information and the developer policies on copyright and licensing.  *
+ *                                                                            *
+ * Unless otherwise agreed in a custom licensing agreement, no part of the    *
+ * Komodo Platform software, including this file may be copied, modified,     *
+ * propagated or distributed except according to the terms contained in the   *
+ * LICENSE file                                                               *
+ *                                                                            *
+ * Removal or modification of this copyright notice is prohibited.            *
+ *                                                                            *
+ ******************************************************************************/
+
+#pragma once
+
+#include <memory>
+#include <entt/entity/entity.hpp>
+#include <entt/signal/dispatcher.hpp>
+#include "antara/gaming/ecs/base.system.hpp"
+
+namespace antara::gaming::ecs
+{
+    class system_manager
+    {
+    public:
+        //! Public typedefs
+        using system_ptr = std::unique_ptr<base_system>;
+        using system_array = std::vector<system_ptr>;
+        using system_registry = std::array<system_array, system_type::size>;
+
+        //! Constructors
+
+        /**
+         * \note Basic constructor
+         * \param dispatcher The dispatcher is provided to the system when it is created.
+         * \param registry The entity_registry is provided to the system when it is created.
+         */
+        explicit system_manager(entt::registry &registry, entt::dispatcher &dispatcher) noexcept;
+
+        /**
+         * \return number of systems
+         */
+        [[nodiscard]] std::size_t nb_systems() const noexcept;
+
+        /**
+         * \param sys_type represent the type of systems.
+         * \return number of systems of a specific type.
+         */
+        [[nodiscard]] std::size_t nb_systems(system_type sys_type) const noexcept;
+
+        /**
+         * \note This function allow you to create a system with the given argument
+         * \note This function is a factory
+         * \tparam TSystem represents the type of system to create
+         * \tparam TSystemArgs represents the arguments needed to construct the system to create
+         * \return Returns a reference to the created system
+         */
+        template<typename TSystem, typename ... TSystemArgs>
+        TSystem &create_system(TSystemArgs &&...args) noexcept;
+
+    private:
+        //! Private member functions
+        base_system &add_system_(system_ptr &&system, system_type sys_type) noexcept;
+
+        //! Private data members
+        entt::registry &entity_registry_;
+        entt::dispatcher &dispatcher_;
+        system_registry systems_{{}};
+    };
+}
+
+//! Implementation
+namespace antara::gaming::ecs
+{
+    template<typename TSystem, typename... TSystemArgs>
+    TSystem &system_manager::create_system(TSystemArgs &&... args) noexcept
+    {
+        auto creator = [this](auto &&... args_) {
+            return std::make_unique<TSystem>(this->entity_registry_,
+                                             this->dispatcher_,
+                                             std::forward<decltype(args_)>(args_)...);
+        };
+        system_ptr sys = creator(std::forward<TSystemArgs>(args)...);
+        return static_cast<TSystem &>(add_system_(std::move(sys), TSystem::get_system_type()));
+    }
+}