a4851ed835
fixed a couple actual real bugs (missing returns in operator=, wrong implicit bool conversion). mostly added a bunch of explicit ctor.
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_UTILS_NAMECOMPONENTMANAGER_H
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#define TNT_UTILS_NAMECOMPONENTMANAGER_H
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#include <stddef.h>
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#include <stdint.h>
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#include <utils/compiler.h>
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#include <utils/Entity.h>
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#include <utils/EntityInstance.h>
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#include <utils/SingleInstanceComponentManager.h>
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namespace utils {
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class EntityManager;
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namespace details {
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class SafeString {
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public:
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SafeString() noexcept = default;
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explicit SafeString(const char* str) noexcept : mCStr(strdup(str)) { }
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SafeString(SafeString&& rhs) noexcept : mCStr(rhs.mCStr) { rhs.mCStr = nullptr; }
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SafeString& operator=(SafeString&& rhs) noexcept {
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mCStr = rhs.mCStr;
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rhs.mCStr = nullptr;
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return *this;
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}
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~SafeString() { free((void*)mCStr); }
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const char* c_str() const noexcept { return mCStr; }
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private:
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char const* mCStr = nullptr;
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};
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} // namespace details
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class NameComponentManager : public SingleInstanceComponentManager<details::SafeString> {
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public:
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using Instance = EntityInstance<NameComponentManager>;
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explicit NameComponentManager(EntityManager& em);
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~NameComponentManager();
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using SingleInstanceComponentManager::hasComponent;
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Instance getInstance(Entity e) const noexcept {
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return Instance(SingleInstanceComponentManager::getInstance(e));
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}
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// these are implemented in SingleInstanceComponentManager<>, but we need to
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// reimplement them in each manager, to ensure they are generated in an implementation file
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// for backward binary compatibility reasons.
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size_t getComponentCount() const noexcept;
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Entity const* getEntities() const noexcept;
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void addComponent(Entity e);
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void removeComponent(Entity e);
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void gc(const EntityManager& em, size_t ratio = 4) noexcept;
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void setName(Instance instance, const char* name) noexcept;
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const char* getName(Instance instance) const noexcept;
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};
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} // namespace utils
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#endif // TNT_UTILS_NAMECOMPONENTMANAGER_H
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