e674420e9c
* prevent public classes from being created on the stack
- we used to to this by deleting operator delete, but this prevented
the internal "F" classes from being virtual; which can be useful
when using EntityManger::Listener.
now we just make the destructor protected in each class.
- EntityManger::Listener now has a virtual destructor so that
objects could be correctly destroyed from Listener*
* improve EntityManger and Component managers
- all component managers now have the same "base" API
- getComponentCount()
- empty()
- getEntity()
- getEntities()
- Scene now has getEntityCount()
- EntityManager now has getEntityCount()
- all component manager implement gc() the same way, by calling destroy()
- SingleInstanceComponentManager::gc() that calls removeComponent() has
been removed because it's dangerous. removeComponent() is often
not enough, some additional cleanup might be needed.
142 lines
3.9 KiB
C++
142 lines
3.9 KiB
C++
/*
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* Copyright (C) 2022 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 GLTFIO_FNODEMANAGER_H
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#define GLTFIO_FNODEMANAGER_H
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#include "downcast.h"
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#include <gltfio/NodeManager.h>
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#include <utils/compiler.h>
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#include <utils/SingleInstanceComponentManager.h>
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#include <utils/Entity.h>
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#include <utils/Slice.h>
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namespace filament::gltfio {
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class UTILS_PRIVATE FNodeManager : public NodeManager {
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public:
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using Instance = NodeManager::Instance;
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FNodeManager() noexcept {}
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~FNodeManager() noexcept {
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assert_invariant(mManager.getComponentCount() == 0);
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}
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void terminate() noexcept;
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bool hasComponent(utils::Entity e) const noexcept {
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return mManager.hasComponent(e);
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}
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Instance getInstance(utils::Entity e) const noexcept {
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return Instance(mManager.getInstance(e));
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}
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void create(utils::Entity entity) {
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if (UTILS_UNLIKELY(mManager.hasComponent(entity))) {
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destroy(entity);
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}
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UTILS_UNUSED_IN_RELEASE Instance ci = mManager.addComponent(entity);
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assert_invariant(ci);
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}
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void destroy(utils::Entity e) noexcept {
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if (Instance const ci = mManager.getInstance(e); ci) {
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mManager.removeComponent(e);
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}
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}
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void gc(utils::EntityManager& em) noexcept {
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mManager.gc(em, [this](Entity e) {
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destroy(e);
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});
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}
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void setMorphTargetNames(Instance ci, utils::FixedCapacityVector<CString> names) noexcept {
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assert_invariant(ci.isValid());
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mManager[ci].morphTargetNames = std::move(names);
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}
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const utils::FixedCapacityVector<CString>& getMorphTargetNames(Instance ci) const noexcept {
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return mManager[ci].morphTargetNames;
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}
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void setExtras(Instance ci, CString extras) noexcept {
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mManager[ci].extras = std::move(extras);
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}
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const CString& getExtras(Instance ci) const noexcept {
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return mManager[ci].extras;
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}
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void setSceneMembership(Instance ci, SceneMask scenes) noexcept {
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mManager[ci].scenes = scenes;
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}
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SceneMask getSceneMembership(Instance ci) const noexcept {
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return mManager[ci].scenes;
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}
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private:
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enum {
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MORPH_TARGET_NAMES,
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EXTRAS_STRING,
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SCENE_MEMBERSHIP,
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};
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using Base = utils::SingleInstanceComponentManager< // 28 bytes
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utils::FixedCapacityVector<CString>, // 16
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CString, // 8
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SceneMask>; // 4
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struct Sim : public Base {
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using Base::gc;
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using Base::swap;
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typename Base::SoA& getSoA() { return mData; }
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struct Proxy {
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UTILS_ALWAYS_INLINE
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Proxy(Base& sim, utils::EntityInstanceBase::Type i) noexcept :
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morphTargetNames{ sim, i } { }
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union {
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Field<MORPH_TARGET_NAMES> morphTargetNames;
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Field<EXTRAS_STRING> extras;
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Field<SCENE_MEMBERSHIP> scenes;
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};
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};
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UTILS_ALWAYS_INLINE Proxy operator[](Instance i) noexcept {
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return { *this, i };
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}
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UTILS_ALWAYS_INLINE const Proxy operator[](Instance i) const noexcept {
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return { const_cast<Sim&>(*this), i };
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}
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};
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Sim mManager;
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};
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FILAMENT_DOWNCAST(NodeManager)
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} // namespace filament::gltfio
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#endif // GLTFIO_FNODEMANAGER_H
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