fix: optimization: PVS-Studio warning V832

It's better to use '= default;' syntax instead of empty constructor and destructor body.
Using '= default;' can help the compiler generate more optimal code.

Reported by: PVS-Studio

Signed-off-by: Vyacheslav Ivanov <islavaivanov76@gmail.com>

src/assets/Assets.cpp

@@ -1,7 +1,6 @@
 #include "Assets.hpp"
 
-Assets::~Assets() {
+Assets::~Assets() = default;
-}
 
 const std::vector<TextureAnimation>& Assets::getAnimations() {
     return animations;

src/assets/Assets.hpp

@@ -68,7 +68,7 @@ class Assets {
     std::unordered_map<std::type_index, assets_map> assets;
     std::vector<assetload::setupfunc> setupFuncs;
 public:
-    Assets() {}
+    Assets() = default;
     Assets(const Assets&) = delete;
     ~Assets();
 

src/audio/audio.cpp

@@ -266,7 +266,7 @@ speakerid_t audio::play(
     }
     auto speaker = speaker_ptr.get();
     speakerid_t id = nextId++;
-    speakers.emplace(id, std::move(speaker_ptr));
+    speakers.try_emplace(id, std::move(speaker_ptr));
     speaker->setPosition(position);
     speaker->setVolume(volume);
     speaker->setPitch(pitch);
@@ -295,8 +295,8 @@ speakerid_t audio::play(
     }
     auto speaker = speaker_ptr.get();
     speakerid_t id = nextId++;
-    streams.emplace(id, stream);
+    streams.try_emplace(id, stream);
-    speakers.emplace(id, std::move(speaker_ptr));
+    speakers.try_emplace(id, std::move(speaker_ptr));
     stream->bindSpeaker(id);
 
     speaker->setPosition(position);

src/coders/xml.hpp

@@ -23,7 +23,7 @@ namespace xml {
         std::string name;
         std::string text;
     public:
-        Attribute() {};
+        Attribute() = default;
         Attribute(std::string name, std::string text);
 
         const std::string& getName() const;

src/content/Content.cpp

@@ -46,8 +46,7 @@ Content::Content(
     }
 }
 
-Content::~Content() {
+Content::~Content() = default;
-}
 
 const rigging::SkeletonConfig* Content::getSkeleton(const std::string& id) const {
     auto found = skeletons.find(id);

src/content/ContentBuilder.cpp

@@ -2,7 +2,7 @@
 
 #include "../objects/rigging.hpp"
 
-ContentBuilder::~ContentBuilder() {}
+ContentBuilder::~ContentBuilder() = default;
 
 void ContentBuilder::add(std::unique_ptr<ContentPackRuntime> pack) {
     packs[pack->getId()] = std::move(pack);

src/content/ContentPack.cpp

@@ -142,5 +142,4 @@ ContentPackRuntime::ContentPackRuntime(
 {
 }
 
-ContentPackRuntime::~ContentPackRuntime() {
+ContentPackRuntime::~ContentPackRuntime() = default;
-}

src/content/PacksManager.cpp

@@ -5,8 +5,7 @@
 #include <queue>
 #include <sstream>
 
-PacksManager::PacksManager() {
+PacksManager::PacksManager() = default;
-}
 
 void PacksManager::setSources(std::vector<fs::path> sources) {
     this->sources = sources;
@@ -19,7 +18,7 @@ void PacksManager::scan() {
     for (auto& folder : sources) {
         ContentPack::scanFolder(folder, packsList);
         for (auto& pack : packsList) {
-            packs.emplace(pack.id, pack);
+            packs.try_emplace(pack.id, pack);
         }
     }
 }

src/data/dynamic.hpp

@@ -41,7 +41,7 @@ namespace dynamic {
     public:
         std::vector<Value> values;
 
-        List() {}
+        List() = default;
         List(std::vector<Value> values) : values(std::move(values)) {}
 
         std::string str(size_t index) const;
@@ -79,7 +79,7 @@ namespace dynamic {
     public:
         std::unordered_map<std::string, Value> values;
 
-        Map() {}
+        Map() = default;
         Map(std::unordered_map<std::string, Value> values) 
         : values(std::move(values)) {};
 

src/files/WorldFiles.cpp

@@ -47,8 +47,7 @@ WorldFiles::WorldFiles(const fs::path& directory, const DebugSettings& settings)
     regions.doWriteLights = doWriteLights;
 }
 
-WorldFiles::~WorldFiles() {
+WorldFiles::~WorldFiles() = default;
-}
 
 void WorldFiles::createDirectories() {
     fs::create_directories(directory / fs::path("data"));

src/files/WorldRegions.cpp

@@ -56,8 +56,7 @@ WorldRegion::WorldRegion()
     sizes(std::make_unique<uint32_t[]>(REGION_CHUNKS_COUNT))
 {}
 
-WorldRegion::~WorldRegion() {
+WorldRegion::~WorldRegion() = default;
-}
 
 void WorldRegion::setUnsaved(bool unsaved) {
     this->unsaved = unsaved;
@@ -98,8 +97,7 @@ WorldRegions::WorldRegions(const fs::path& directory) : directory(directory) {
     layers[REGION_LAYER_ENTITIES].folder = directory/fs::path("entities");
 }
 
-WorldRegions::~WorldRegions() {
+WorldRegions::~WorldRegions() = default;
-}
 
 WorldRegion* WorldRegions::getRegion(int x, int z, int layer) {
     RegionsLayer& regions = layers[layer];

src/frontend/ContentGfxCache.cpp

@@ -38,8 +38,7 @@ ContentGfxCache::ContentGfxCache(const Content* content, Assets* assets) : conte
     }
 }
 
-ContentGfxCache::~ContentGfxCache() {
+ContentGfxCache::~ContentGfxCache() = default;
-}
 
 const Content* ContentGfxCache::getContent() const {
     return content;

src/frontend/LevelFrontend.cpp

@@ -81,8 +81,7 @@ LevelFrontend::LevelFrontend(
     );
 }
 
-LevelFrontend::~LevelFrontend() {
+LevelFrontend::~LevelFrontend() = default;
-}
 
 Level* LevelFrontend::getLevel() const {
     return level;

src/graphics/core/Atlas.cpp

@@ -19,8 +19,7 @@ Atlas::Atlas(
     }
 }
 
-Atlas::~Atlas() {
+Atlas::~Atlas() = default;
-}
 
 void Atlas::prepare() {
     texture = Texture::from(image.get());

src/graphics/core/Atlas.hpp

@@ -47,7 +47,7 @@ class AtlasBuilder {
     std::vector<atlasentry> entries;
     std::set<std::string> names;
 public:
-    AtlasBuilder() {}
+    AtlasBuilder() = default;
     void add(const std::string& name, std::unique_ptr<ImageData> image);
     bool has(const std::string& name) const;
     const std::set<std::string>& getNames() { return names; };

src/graphics/core/Font.cpp

@@ -12,8 +12,7 @@ Font::Font(std::vector<std::unique_ptr<Texture>> pages, int lineHeight, int yoff
     : lineHeight(lineHeight), yoffset(yoffset), pages(std::move(pages)) {
 }
 
-Font::~Font(){
+Font::~Font() = default;
-}
 
 int Font::getYOffset() const {
     return yoffset;

src/graphics/core/ImageData.cpp

@@ -41,8 +41,7 @@ ImageData::ImageData(ImageFormat format, uint width, uint height, const ubyte* d
     std::memcpy(this->data.get(), data, width * height * pixsize);
 }
 
-ImageData::~ImageData() {
+ImageData::~ImageData() = default;
-}
 
 void ImageData::flipX() {
     switch (format) {

src/graphics/core/PostProcessing.cpp

@@ -18,8 +18,7 @@ PostProcessing::PostProcessing() {
     quadMesh = std::make_unique<Mesh>(vertices, 6, attrs);
 }
 
-PostProcessing::~PostProcessing() {
+PostProcessing::~PostProcessing() = default;
-}
 
 void PostProcessing::use(DrawContext& context) {
     const auto& vp = context.getViewport();

src/graphics/core/Shader.cpp

@@ -32,7 +32,7 @@ uint Shader::getUniformLocation(const std::string& name) {
     auto found = uniformLocations.find(name);
     if (found == uniformLocations.end()) {
         uint location = glGetUniformLocation(id, name.c_str());
-        uniformLocations.emplace(name, location);
+        uniformLocations.try_emplace(name, location);
         return location;
     }
     return found->second;

src/graphics/core/TextureAnimation.hpp

@@ -22,7 +22,7 @@ struct Frame {
 class TextureAnimation {
 public:
     TextureAnimation(Texture* srcTex, Texture* dstTex) : srcTexture(srcTex), dstTexture(dstTex) {};
-    ~TextureAnimation() {};
+    ~TextureAnimation() = default;
 
     void addFrame(const Frame& frame) { frames.emplace_back(frame); };
 

src/graphics/render/ModelBatch.cpp

@@ -64,8 +64,7 @@ ModelBatch::ModelBatch(size_t capacity, Assets* assets, Chunks* chunks)
     blank = Texture::from(&image);
 }
 
-ModelBatch::~ModelBatch() {
+ModelBatch::~ModelBatch() = default;
-}
 
 void ModelBatch::draw(const model::Mesh& mesh, const glm::mat4& matrix, 
                       const glm::mat3& rotation, glm::vec3 tint,

src/graphics/render/Skybox.cpp

@@ -55,8 +55,7 @@ Skybox::Skybox(uint size, Shader* shader)
     });
 }
 
-Skybox::~Skybox() {
+Skybox::~Skybox() = default;
-}
 
 void Skybox::drawBackground(Camera* camera, Assets* assets, int width, int height) {
     auto backShader = assets->get<Shader>("background");

src/graphics/render/WorldRenderer.cpp

@@ -75,8 +75,7 @@ WorldRenderer::WorldRenderer(Engine* engine, LevelFrontend* frontend, Player* pl
     );
 }
 
-WorldRenderer::~WorldRenderer() {
+WorldRenderer::~WorldRenderer() = default;
-}
 
 bool WorldRenderer::drawChunk(
     size_t index,

src/graphics/ui/GUI.cpp

@@ -44,8 +44,7 @@ GUI::GUI() {
     container->add(tooltip);
 }
 
-GUI::~GUI() {
+GUI::~GUI() = default;
-}
 
 std::shared_ptr<Menu> GUI::getMenu() {
     return menu;

src/items/Inventories.cpp

@@ -8,8 +8,7 @@
 Inventories::Inventories(Level& level) : level(level) {
 }
 
-Inventories::~Inventories() {
+Inventories::~Inventories() = default;
-}
 
 std::shared_ptr<Inventory> Inventories::create(size_t size) {
     int64_t id = level.getWorld()->getNextInventoryId();

src/lighting/Lighting.cpp

@@ -20,8 +20,7 @@ Lighting::Lighting(const Content* content, Chunks* chunks)
     solverS = std::make_unique<LightSolver>(indices, chunks, 3);
 }
 
-Lighting::~Lighting(){
+Lighting::~Lighting() = default;
-}
 
 void Lighting::clear(){
     for (size_t index = 0; index < chunks->volume; index++){

src/logic/ChunksController.cpp

@@ -30,8 +30,7 @@ ChunksController::ChunksController(Level* level, uint padding)
     generator(WorldGenerators::createGenerator(level->getWorld()->getGenerator(), level->content)) {
 }
 
-ChunksController::~ChunksController(){
+ChunksController::~ChunksController() = default;
-}
 
 void ChunksController::update(int64_t maxDuration) {
     int64_t mcstotal = 0;

src/logic/CommandsInterpreter.hpp

@@ -55,7 +55,7 @@ namespace cmd {
         std::string description;
         executor_func executor;
     public:
-        Command() {}
+        Command() = default;
 
         Command(
             std::string name,

src/maths/FrustumCulling.hpp

@@ -5,7 +5,7 @@
 
 class Frustum {
 public:
-    Frustum() {};
+    Frustum() = default;
 
     void update(glm::mat4 projview);
     bool isBoxVisible(const glm::vec3& minp, const glm::vec3& maxp) const;

src/maths/rays.hpp

@@ -21,7 +21,7 @@ class AABBFaces {
 public:
     std::array<std::pair<rayvec3, rayvec2>, AABBFACES_COUNT> faces; // every face is min-point and opposite corner point
 
-    AABBFaces(){};
+    AABBFaces() = default;
     AABBFaces(const rayvec3& parentBoxPos, const AABB& parentBox);
 };
 

src/util/ThreadPool.hpp

@@ -28,8 +28,8 @@ struct ThreadPoolResult {
 template<class T, class R>
 class Worker {
 public:
-    Worker() {}
+    Worker() = default;
-    virtual ~Worker() {}
+    virtual ~Worker() = default;
     virtual R operator()(const std::shared_ptr<T>&) = 0;
 };
 

src/window/input.hpp

@@ -142,7 +142,7 @@ struct Binding {
     bool state = false;
     bool justChange = false;
     
-    Binding(){}
+    Binding() = default;
     Binding(inputtype type, int code) : type(type), code(code) {}
 
     bool active() const {