fix: optimization: PVS-Studio warning V807

Created references to avoid using repeated expressions, improving performance across multiple instances.

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

src/content/ContentLoader.cpp

@@ -176,9 +176,10 @@ void ContentLoader::loadBlock(Block& def, const std::string& name, const fs::pat
         def.hitboxes.resize(boxarr->size());
         for (uint i = 0; i < boxarr->size(); i++) {
             auto box = boxarr->list(i);
-            def.hitboxes[i].a = glm::vec3(box->num(0), box->num(1), box->num(2));
-            def.hitboxes[i].b = glm::vec3(box->num(3), box->num(4), box->num(5));
-            def.hitboxes[i].b += def.hitboxes[i].a;
+            auto& hitboxesIndex = def.hitboxes[i];
+            hitboxesIndex.a = glm::vec3(box->num(0), box->num(1), box->num(2));
+            hitboxesIndex.b = glm::vec3(box->num(3), box->num(4), box->num(5));
+            hitboxesIndex.b += hitboxesIndex.a;
         }
     } else if ((boxarr = root->list("hitbox"))){
         AABB aabb;

src/files/WorldConverter.cpp

@@ -73,11 +73,12 @@ std::shared_ptr<Task> WorldConverter::startTask(
         [=](){return std::make_shared<ConverterWorker>(converter);},
         [=](int&) {}
     );
-    while (!converter->tasks.empty()) {
-        const convert_task& task = converter->tasks.front();
+    auto& converterTasks = converter->tasks;
+    while (!converterTasks.empty()) {
+        const convert_task& task = converterTasks.front();
         auto ptr = std::make_shared<convert_task>(task);
         pool->enqueueJob(ptr);
-        converter->tasks.pop();
+        converterTasks.pop();
     }
     pool->setOnComplete([=]() {
         converter->write();

src/logic/ChunksController.cpp

@@ -113,21 +113,22 @@ bool ChunksController::buildLights(const std::shared_ptr<Chunk>& chunk) {
 void ChunksController::createChunk(int x, int z) {
     auto chunk = level->chunksStorage->create(x, z);
     chunks->putChunk(chunk);
+    auto& chunkFlags = chunk->flags;
 
-    if (!chunk->flags.loaded) {
+    if (!chunkFlags.loaded) {
         generator->generate(
             chunk->voxels, x, z, 
             level->getWorld()->getSeed()
         );
-        chunk->flags.unsaved = true;
+        chunkFlags.unsaved = true;
     }
     chunk->updateHeights();
 
-    if (!chunk->flags.loadedLights) {
+    if (!chunkFlags.loadedLights) {
         Lighting::prebuildSkyLight(
             chunk.get(), level->content->getIndices()
         );
     }
-    chunk->flags.loaded = true;
-    chunk->flags.ready = true;
+    chunkFlags.loaded = true;
+    chunkFlags.ready = true;
 }

src/logic/LevelController.cpp

@@ -47,11 +47,12 @@ void LevelController::update(float delta, bool input, bool pause) {
     player->postUpdate(delta, input, pause);
 
     // erease null pointers
-    level->objects.erase(
+    auto& objects = level->objects;
+    objects.erase(
         std::remove_if(
-            level->objects.begin(), level->objects.end(),
+            objects.begin(), objects.end(),
             [](auto obj) { return obj == nullptr; }),
-        level->objects.end()
+        objects.end()
     );
 }