1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef CORE_ENGINE_H 17 #define CORE_ENGINE_H 18 19 #include <cstdint> 20 21 #include <base/containers/array_view.h> 22 #include <base/containers/string.h> 23 #include <base/containers/string_view.h> 24 #include <base/containers/unique_ptr.h> 25 #include <base/containers/vector.h> 26 #include <base/namespace.h> 27 #include <core/ecs/intf_ecs.h> 28 #include <core/engine_info.h> 29 #include <core/intf_engine.h> 30 #include <core/io/intf_file_manager.h> 31 #include <core/namespace.h> 32 #include <core/plugin/intf_class_register.h> 33 #include <core/plugin/intf_interface_helper.h> 34 #include <core/plugin/intf_plugin.h> 35 #include <core/plugin/intf_plugin_register.h> 36 37 BASE_BEGIN_NAMESPACE() 38 template<class T1, class T2> 39 struct pair; 40 BASE_END_NAMESPACE() 41 42 CORE_BEGIN_NAMESPACE() 43 class IImageLoaderManager; 44 class IPlatform; 45 class IThreadPool; 46 47 class Engine final : public IInterfaceHelper<IEngine, IClassRegister, IClassFactory>, 48 IPluginRegister::ITypeInfoListener { 49 public: 50 explicit Engine(EngineCreateInfo const& createInfo); 51 ~Engine() override; 52 53 void Init() override; 54 bool TickFrame() override; 55 bool TickFrame(const BASE_NS::array_view<IEcs*>& ecsInputs) override; 56 IFileManager& GetFileManager() override; 57 58 IImageLoaderManager& GetImageLoaderManager() override; 59 60 const IPlatform& GetPlatform() const override; 61 62 EngineTime GetEngineTime() const override; 63 64 IEcs::Ptr CreateEcs() override; 65 IEcs::Ptr CreateEcs(IThreadPool& threadPool) override; 66 67 BASE_NS::string_view GetVersion() override; 68 bool IsDebugBuild() override; 69 70 const IInterface* GetInterface(const BASE_NS::Uid& uid) const override; 71 IInterface* GetInterface(const BASE_NS::Uid& uid) override; 72 73 // IClassFactory 74 IInterface::Ptr CreateInstance(const BASE_NS::Uid& uid) override; 75 76 // IClassRegister 77 void RegisterInterfaceType(const InterfaceTypeInfo& interfaceInfo) override; 78 void UnregisterInterfaceType(const InterfaceTypeInfo& interfaceInfo) override; 79 BASE_NS::array_view<const InterfaceTypeInfo* const> GetInterfaceMetadata() const override; 80 const InterfaceTypeInfo& GetInterfaceMetadata(const BASE_NS::Uid& uid) const override; 81 IInterface* GetInstance(const BASE_NS::Uid& uid) const override; 82 83 // IPluginRegister::ITypeInfoListener 84 void OnTypeInfoEvent(EventType type, BASE_NS::array_view<const ITypeInfo* const> typeInfos) override; 85 86 private: 87 void RegisterDefaultPaths(); 88 void LoadPlugins(); 89 void UnloadPlugins(); 90 static bool TickFrame(IEcs& ecs, uint64_t totalTime, uint64_t deltaTime); 91 92 uint64_t firstTime_ { ~0u }; 93 uint64_t previousFrameTime_ { ~0u }; 94 uint64_t deltaTime_ { 1 }; 95 96 BASE_NS::unique_ptr<IPlatform> platform_; 97 98 IFileManager::Ptr fileManager_; 99 100 BASE_NS::unique_ptr<class ImageLoaderManager> imageManager_; 101 102 BASE_NS::vector<BASE_NS::pair<PluginToken, const IEnginePlugin*>> plugins_; 103 BASE_NS::vector<const InterfaceTypeInfo*> interfaceTypeInfos_; 104 105 // unique counter for ECS objects 106 int32_t ecsCounter_ { 0 }; 107 }; 108 CORE_END_NAMESPACE() 109 110 #endif // CORE_ENGINE_H 111