Runtime: Collapse emplace_back() calls where applicable

Same behavior, but with less code.

Runtime/AutoMapper/CMapArea.cpp

@@ -30,8 +30,7 @@ void CMapArea::PostConstruct() {
 
   m_mappableObjects.reserve(x28_mappableObjCount);
   for (u32 i = 0, j = 0; i < x28_mappableObjCount; ++i, j += 0x50) {
-    m_mappableObjects.emplace_back(x38_moStart + j);
+    m_mappableObjects.emplace_back(x38_moStart + j).PostConstruct(x44_buf.get());
-    m_mappableObjects.back().PostConstruct(x44_buf.get());
   }
 
   u8* tmp = x3c_vertexStart;
@@ -45,8 +44,7 @@ void CMapArea::PostConstruct() {
   std::vector<u32> index;
   m_surfaces.reserve(x30_surfaceCount);
   for (u32 i = 0, j = 0; i < x30_surfaceCount; ++i, j += 32) {
-    m_surfaces.emplace_back(x40_surfaceStart + j);
+    m_surfaces.emplace_back(x40_surfaceStart + j).PostConstruct(x44_buf.get(), index);
-    m_surfaces.back().PostConstruct(x44_buf.get(), index);
   }
 
   CGraphics::CommitResources([this, &index](boo::IGraphicsDataFactory::Context& ctx) {
@@ -60,8 +58,7 @@ void CMapArea::PostConstruct() {
       CMapAreaSurface& surf = m_surfaces[i];
       surf.m_instances.reserve(instCount);
       for (u32 inst = 0; inst < instCount; ++inst) {
-        surf.m_instances.emplace_back(ctx, m_vbo, m_ibo);
+        CMapAreaSurface::Instance& instance = surf.m_instances.emplace_back(ctx, m_vbo, m_ibo);
-        CMapAreaSurface::Instance& instance = surf.m_instances.back();
 
         athena::io::MemoryReader r(surf.x1c_outlineOffset, INT_MAX);
         u32 outlineCount = r.readUint32Big();

Runtime/AutoMapper/CMapUniverse.cpp

@@ -17,11 +17,10 @@ CMapUniverse::CMapUniverse(CInputStream& in, u32 version) : x0_hexagonId(in.read
 CMapUniverse::CMapWorldData::CMapWorldData(CInputStream& in, u32 version)
 : x0_label(in.readString()), x10_worldAssetId(in.readUint32Big()) {
   x14_transform.read34RowMajor(in);
-  u32 worldCount = in.readUint32Big();
+  const u32 worldCount = in.readUint32Big();
   x44_hexagonXfs.reserve(worldCount);
   for (u32 i = 0; i < worldCount; ++i) {
-    x44_hexagonXfs.emplace_back();
+    x44_hexagonXfs.emplace_back().read34RowMajor(in);
-    x44_hexagonXfs.back().read34RowMajor(in);
   }
 
   if (version != 0)

Runtime/CGameAllocator.cpp

@@ -29,14 +29,14 @@ u8* CGameAllocator::Alloc(size_t len) {
 
   /* Pad size to allow for allocation information */
   allocSz = ROUND_UP_64(allocSz + sizeof(SChunkDescription));
-  m_allocations.emplace_back();
+  auto& alloc = m_allocations.emplace_back();
-  m_allocations.back().memptr.reset(new u8[allocSz]);
+  alloc.memptr.reset(new u8[allocSz]);
-  u8* ptr = m_allocations.back().memptr.get();
+  u8* ptr = alloc.memptr.get();
-  m_allocations.back().allocSize = allocSz;
+  alloc.allocSize = allocSz;
-  m_allocations.back().freeOffset += roundedLen;
+  alloc.freeOffset += roundedLen;
   SChunkDescription* chunkInfo = reinterpret_cast<SChunkDescription*>(ptr);
   *chunkInfo = SChunkDescription();
-  chunkInfo->parent = &m_allocations.back();
+  chunkInfo->parent = &alloc;
   chunkInfo->len = len;
   return ptr + sizeof(SChunkDescription);
 }

Runtime/CSaveWorld.cpp

@@ -5,45 +5,51 @@
 namespace urde {
 CSaveWorld::CSaveWorld(CInputStream& in) {
   in.readUint32Big();
-  u32 version = in.readUint32Big();
+  const u32 version = in.readUint32Big();
-  if (version > 1)
+  if (version > 1) {
     x0_areaCount = in.readUint32Big();
-  if (version > 2) {
-    u32 cinematicCount = in.readUint32Big();
-    x4_cinematics.reserve(cinematicCount);
-    for (u32 i = 0; i < cinematicCount; ++i)
-      x4_cinematics.push_back(in.readUint32Big());
-
-    u32 relayCount = in.readUint32Big();
-    x14_relays.reserve(relayCount);
-    for (u32 i = 0; i < relayCount; ++i)
-      x14_relays.push_back(in.readUint32Big());
   }
 
-  u32 layerCount = in.readUint32Big();
+  if (version > 2) {
+    const u32 cinematicCount = in.readUint32Big();
+    x4_cinematics.reserve(cinematicCount);
+    for (u32 i = 0; i < cinematicCount; ++i) {
+      x4_cinematics.push_back(in.readUint32Big());
+    }
+
+    const u32 relayCount = in.readUint32Big();
+    x14_relays.reserve(relayCount);
+    for (u32 i = 0; i < relayCount; ++i) {
+      x14_relays.push_back(in.readUint32Big());
+    }
+  }
+
+  const u32 layerCount = in.readUint32Big();
   x24_layers.reserve(layerCount);
   for (u32 i = 0; i < layerCount; ++i) {
-    x24_layers.emplace_back();
+    SLayerState& st = x24_layers.emplace_back();
-    SLayerState& st = x24_layers.back();
     st.x0_area = in.readUint32Big();
     st.x4_layer = in.readUint32Big();
   }
 
-  u32 doorCount = in.readUint32Big();
+  const u32 doorCount = in.readUint32Big();
   x34_doors.reserve(doorCount);
-  for (u32 i = 0; i < doorCount; ++i)
+  for (u32 i = 0; i < doorCount; ++i) {
     x34_doors.push_back(in.readUint32Big());
-  if (version > 0) {
+  }
-    u32 scanCount = in.readUint32Big();
+
+  if (version <= 0) {
+    return;
+  }
+
+  const u32 scanCount = in.readUint32Big();
   x44_scans.reserve(scanCount);
   for (u32 i = 0; i < scanCount; ++i) {
-      x44_scans.emplace_back();
+    SScanState& st = x44_scans.emplace_back();
-      SScanState& st = x44_scans.back();
     st.x0_id = in.readUint32Big();
     st.x4_category = EScanCategory(in.readUint32Big());
   }
 }
-}
 
 u32 CSaveWorld::GetAreaCount() const { return x0_areaCount; }
 

Runtime/Camera/CCameraManager.cpp

@@ -49,8 +49,7 @@ void CCameraManager::RemoveCameraShaker(u32 id) {
 }
 
 int CCameraManager::AddCameraShaker(const CCameraShakeData& data, bool sfx) {
-  x14_shakers.emplace_back(data);
+  x14_shakers.emplace_back(data).xbc_shakerId = ++x2c_lastShakeId;
-  x14_shakers.back().xbc_shakerId = ++x2c_lastShakeId;
   if (!xa0_24_pendingRumble) {
     xa0_24_pendingRumble = true;
     x90_rumbleCooldown = 0.5f;

Runtime/Character/CActorLights.cpp

@@ -266,8 +266,7 @@ bool CActorLights::BuildAreaLightList(const CStateManager& mgr, const CGameArea&
         zeus::CSphere sphere(light.GetPosition(), light.GetRadius() * 2.f);
         if (aabb.intersects(sphere)) {
           /* Light passes as candidate */
-          valList.emplace_back();
+          SLightValue& value = valList.emplace_back();
-          SLightValue& value = valList.back();
           value.x0_areaLightIdx = lightIdx;
           value.x4_color = light.GetNormalIndependentLightingAtPoint(vec);
           value.x4_color.a() = 0.f;

Runtime/Character/CAnimSource.cpp

@@ -51,18 +51,16 @@ std::unique_ptr<float[]> RotationAndOffsetStorage::GetRotationsAndOffsets(const
 }
 
 RotationAndOffsetStorage::CRotationAndOffsetVectors::CRotationAndOffsetVectors(CInputStream& in) {
-  u32 quatCount = in.readUint32Big();
+  const u32 quatCount = in.readUint32Big();
   x0_rotations.reserve(quatCount);
   for (u32 i = 0; i < quatCount; ++i) {
-    x0_rotations.emplace_back();
+    x0_rotations.emplace_back().readBig(in);
-    x0_rotations.back().readBig(in);
   }
 
-  u32 vecCount = in.readUint32Big();
+  const u32 vecCount = in.readUint32Big();
   x10_offsets.reserve(vecCount);
   for (u32 i = 0; i < vecCount; ++i) {
-    x10_offsets.emplace_back();
+    x10_offsets.emplace_back().readBig(in);
-    x10_offsets.back().readBig(in);
   }
 }
 

Runtime/Character/CBodyState.cpp

@@ -1721,8 +1721,7 @@ pas::EAnimationState CBSLocomotion::GetBodyStateTransition(float, CBodyControlle
 CBSBiPedLocomotion::CBSBiPedLocomotion(CActor& actor) {
   const CPASDatabase& pasDatabase = actor.GetModelData()->GetAnimationData()->GetCharacterInfo().GetPASDatabase();
   for (int i = 0; i < 14; ++i) {
-    x8_anims.emplace_back();
+    rstl::reserved_vector<std::pair<s32, float>, 8>& innerVec = x8_anims.emplace_back();
-    rstl::reserved_vector<std::pair<s32, float>, 8>& innerVec = x8_anims.back();
     for (int j = 0; j < 8; ++j) {
       CPASAnimParmData parms(5, CPASAnimParm::FromEnum(j), CPASAnimParm::FromEnum(i));
       std::pair<float, s32> best = pasDatabase.FindBestAnimation(parms, -1);

Runtime/Graphics/CModelBoo.cpp

@@ -263,13 +263,15 @@ GeometryUniformLayout::GeometryUniformLayout(const CModel* model, const Material
 }
 
 CBooModel::ModelInstance* CBooModel::PushNewModelInstance(int sharedLayoutBuf) {
-  if (!x40_24_texturesLoaded && !g_DummyTextures)
+  if (!x40_24_texturesLoaded && !g_DummyTextures) {
     return nullptr;
+  }
 
-  if (m_instances.size() >= 512)
+  if (m_instances.size() >= 512) {
     Log.report(logvisor::Fatal, fmt("Model buffer overflow"));
-  m_instances.emplace_back();
+  }
-  ModelInstance& newInst = m_instances.back();
+
+  ModelInstance& newInst = m_instances.emplace_back();
 
   CGraphics::CommitResources([&](boo::IGraphicsDataFactory::Context& ctx) {
     /* Build geometry uniform buffer if shared not available */
@@ -371,8 +373,7 @@ CBooModel::ModelInstance* CBooModel::PushNewModelInstance(int sharedLayoutBuf) {
 
       const CModelShaders::ShaderPipelines& pipelines = m_pipelines->at(surf.m_data.matIdx);
 
-      newInst.m_shaderDataBindings.emplace_back();
+      std::vector<boo::ObjToken<boo::IShaderDataBinding>>& extendeds = newInst.m_shaderDataBindings.emplace_back();
-      std::vector<boo::ObjToken<boo::IShaderDataBinding>>& extendeds = newInst.m_shaderDataBindings.back();
       extendeds.reserve(pipelines->size());
 
       EExtendedShader idx{};
@@ -1171,10 +1172,9 @@ CModel::CModel(std::unique_ptr<u8[]>&& in, u32 /* dataLen */, IObjectStore* stor
   const u8* dataCur = data.get() + ROUND_UP_32(0x2c + secCount * 4);
   const u32* secSizeCur = reinterpret_cast<const u32*>(data.get() + 0x2c);
   for (u32 i = 0; i < matSetCount; ++i) {
-    u32 matSetSz = hecl::SBig(*secSizeCur);
+    const u32 matSetSz = hecl::SBig(*secSizeCur);
     const u8* sec = MemoryFromPartData(dataCur, secSizeCur);
-    x18_matSets.emplace_back(i);
+    SShader& shader = x18_matSets.emplace_back(i);
-    SShader& shader = x18_matSets.back();
     athena::io::MemoryReader r(sec, matSetSz);
     shader.m_matSet.read(r);
     CBooModel::MakeTexturesFromMats(shader.m_matSet, shader.x0_textures, *store);
@@ -1217,13 +1217,12 @@ CModel::CModel(std::unique_ptr<u8[]>&& in, u32 /* dataLen */, IObjectStore* stor
     return true;
   } BooTrace);
 
-  u32 surfCount = hecl::SBig(*reinterpret_cast<const u32*>(surfInfo));
+  const u32 surfCount = hecl::SBig(*reinterpret_cast<const u32*>(surfInfo));
   x8_surfaces.reserve(surfCount);
   for (u32 i = 0; i < surfCount; ++i) {
-    u32 surfSz = hecl::SBig(*secSizeCur);
+    const u32 surfSz = hecl::SBig(*secSizeCur);
     const u8* sec = MemoryFromPartData(dataCur, secSizeCur);
-    x8_surfaces.emplace_back();
+    CBooSurface& surf = x8_surfaces.emplace_back();
-    CBooSurface& surf = x8_surfaces.back();
     surf.selfIdx = i;
     athena::io::MemoryReader r(sec, surfSz);
     surf.m_data.read(r);

Runtime/Graphics/CMoviePlayer.cpp

@@ -205,8 +205,7 @@ CMoviePlayer::CMoviePlayer(const char* path, float preLoadSeconds, bool loop, bo
     /* Allocate textures here (rather than at decode time) */
     x80_textures.reserve(3);
     for (int i = 0; i < 3; ++i) {
-      x80_textures.emplace_back();
+      CTHPTextureSet& set = x80_textures.emplace_back();
-      CTHPTextureSet& set = x80_textures.back();
       if (deinterlace) {
         /* urde addition: this way interlaced THPs don't look horrible */
         set.Y[0] = ctx.newDynamicTexture(x6c_videoInfo.width, x6c_videoInfo.height / 2, boo::TextureFormat::I8,

Runtime/GuiSys/CHudRadarInterface.cpp

@@ -31,8 +31,8 @@ CHudRadarInterface::CHudRadarInterface(CGuiFrame& baseHud, CStateManager& stateM
 void CHudRadarInterface::DoDrawRadarPaint(const zeus::CVector3f& translate, float radius,
                                           const zeus::CColor& color) const {
   radius *= 4.f;
-  m_paintInsts.emplace_back();
+
-  CRadarPaintShader::Instance& inst = m_paintInsts.back();
+  CRadarPaintShader::Instance& inst = m_paintInsts.emplace_back();
   inst.pos[0] = translate + zeus::CVector3f(-radius, 0.f, radius);
   inst.uv[0].assign(0.f, 1.f);
   inst.pos[1] = translate + zeus::CVector3f(-radius, 0.f, -radius);

Runtime/GuiSys/CTextRenderBuffer.cpp

@@ -185,8 +185,8 @@ void CTextRenderBuffer::AddCharacter(const zeus::CVector2i& offset, char16_t ch,
     m_primitiveMarks.push_back({Command::CharacterRender, m_activeFontCh, chs.m_charCount++});
   else {
     const CGlyph* glyph = chs.m_font.GetObj()->GetGlyph(ch);
-    chs.m_charData.emplace_back();
+
-    CTextSupportShader::CharacterInstance& inst = chs.m_charData.back();
+    CTextSupportShader::CharacterInstance& inst = chs.m_charData.emplace_back();
     inst.SetMetrics(*glyph, offset);
     inst.m_fontColor = m_main * color;
     inst.m_outlineColor = m_outline * color;

Runtime/Particle/CDecal.cpp

@@ -114,8 +114,7 @@ void CDecal::RenderQuad(CQuadDecal& decal, const SQuadDescr& desc) const {
     g_instTexData.clear();
     g_instTexData.reserve(1);
 
-    g_instTexData.emplace_back();
+    SParticleInstanceTex& inst = g_instTexData.emplace_back();
-    SParticleInstanceTex& inst = g_instTexData.back();
     if (decal.x8_rotation == 0.f) {
       inst.pos[0] = zeus::CVector3f(-size, 0.001f, size);
       inst.pos[1] = zeus::CVector3f(size, 0.001f, size);
@@ -142,8 +141,7 @@ void CDecal::RenderQuad(CQuadDecal& decal, const SQuadDescr& desc) const {
     g_instNoTexData.clear();
     g_instNoTexData.reserve(1);
 
-    g_instNoTexData.emplace_back();
+    SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-    SParticleInstanceNoTex& inst = g_instNoTexData.back();
     if (decal.x8_rotation == 0.f) {
       inst.pos[0] = zeus::CVector3f(-size, 0.001f, size);
       inst.pos[1] = zeus::CVector3f(size, 0.001f, size);

Runtime/Particle/CElementGen.cpp

@@ -493,17 +493,18 @@ void CElementGen::CreateNewParticles(int count) {
   CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
 
   for (int i = 0; i < count; ++i) {
-    x30_particles.emplace_back();
+    CParticle& particle = x30_particles.emplace_back();
     ++g_ParticleAliveCount;
     ++x25c_activeParticleCount;
     ++x260_cumulativeParticles;
-    if (x2c_orientType == EModelOrientationType::One)
+    if (x2c_orientType == EModelOrientationType::One) {
       x50_parentMatrices[x30_particles.size() - 1] = x1d8_orientation.buildMatrix3f();
+    }
 
-    CParticle& particle = x30_particles.back();
     particle.x28_startFrame = x74_curFrame;
-    if (CIntElement* ltme = desc->x34_x28_LTME.get())
+    if (CIntElement* ltme = desc->x34_x28_LTME.get()) {
       ltme->GetValue(0, particle.x0_endFrame);
+    }
     CParticleGlobals::instance()->SetParticleLifetime(particle.x0_endFrame);
     CParticleGlobals::instance()->UpdateParticleLifetimeTweenValues(0);
     g_currentParticle = &particle;
@@ -994,8 +995,7 @@ void CElementGen::RenderModels(const CActorLights* actorLights) {
 
       switch (m_shaderClass) {
       case CElementGenShaders::EShaderClass::Tex: {
-        g_instTexData.emplace_back();
+        SParticleInstanceTex& inst = g_instTexData.emplace_back();
-        SParticleInstanceTex& inst = g_instTexData.back();
         inst.pos[0] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, 0.5f};
         inst.pos[1] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, 0.5f};
         inst.pos[2] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, -0.5f};
@@ -1008,8 +1008,7 @@ void CElementGen::RenderModels(const CActorLights* actorLights) {
         break;
       }
       case CElementGenShaders::EShaderClass::NoTex: {
-        g_instNoTexData.emplace_back();
+        SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-        SParticleInstanceNoTex& inst = g_instNoTexData.back();
         inst.pos[0] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, 0.5f};
         inst.pos[1] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, 0.5f};
         inst.pos[2] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, -0.5f};
@@ -1327,8 +1326,7 @@ void CElementGen::RenderParticles() {
         if (0.f == particle.x30_lineWidthOrRota) {
           switch (m_shaderClass) {
           case CElementGenShaders::EShaderClass::Tex: {
-            g_instTexData.emplace_back();
+            SParticleInstanceTex& inst = g_instTexData.emplace_back();
-            SParticleInstanceTex& inst = g_instTexData.back();
             inst.pos[0] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() + size, 1.f};
             inst.pos[1] = zeus::CVector4f{viewPoint.x() - size, viewPoint.y(), viewPoint.z() + size, 1.f};
             inst.pos[2] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() - size, 1.f};
@@ -1341,8 +1339,7 @@ void CElementGen::RenderParticles() {
             break;
           }
           case CElementGenShaders::EShaderClass::NoTex: {
-            g_instNoTexData.emplace_back();
+            SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-            SParticleInstanceNoTex& inst = g_instNoTexData.back();
             inst.pos[0] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() + size, 1.f};
             inst.pos[1] = zeus::CVector4f{viewPoint.x() - size, viewPoint.y(), viewPoint.z() + size, 1.f};
             inst.pos[2] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() - size, 1.f};
@@ -1360,8 +1357,7 @@ void CElementGen::RenderParticles() {
 
           switch (m_shaderClass) {
           case CElementGenShaders::EShaderClass::Tex: {
-            g_instTexData.emplace_back();
+            SParticleInstanceTex& inst = g_instTexData.emplace_back();
-            SParticleInstanceTex& inst = g_instTexData.back();
             inst.pos[0] = zeus::CVector4f{viewPoint.x() + sinT + cosT, viewPoint.y(), viewPoint.z() + cosT - sinT, 1.f};
             inst.pos[1] = zeus::CVector4f{viewPoint.x() + sinT - cosT, viewPoint.y(), viewPoint.z() + sinT + cosT, 1.f};
             inst.pos[2] =
@@ -1376,8 +1372,7 @@ void CElementGen::RenderParticles() {
             break;
           }
           case CElementGenShaders::EShaderClass::NoTex: {
-            g_instNoTexData.emplace_back();
+            SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-            SParticleInstanceNoTex& inst = g_instNoTexData.back();
             inst.pos[0] = zeus::CVector4f{viewPoint.x() + sinT + cosT, viewPoint.y(), viewPoint.z() + cosT - sinT, 1.f};
             inst.pos[1] = zeus::CVector4f{viewPoint.x() + sinT - cosT, viewPoint.y(), viewPoint.z() + sinT + cosT, 1.f};
             inst.pos[2] =
@@ -1437,8 +1432,7 @@ void CElementGen::RenderParticles() {
 
         switch (m_shaderClass) {
         case CElementGenShaders::EShaderClass::Tex: {
-          g_instTexData.emplace_back();
+          SParticleInstanceTex& inst = g_instTexData.emplace_back();
-          SParticleInstanceTex& inst = g_instTexData.back();
           viewPoint += rightVec * 0.5f;
           inst.pos[0] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
           inst.pos[1] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
@@ -1453,8 +1447,7 @@ void CElementGen::RenderParticles() {
           break;
         }
         case CElementGenShaders::EShaderClass::NoTex: {
-          g_instNoTexData.emplace_back();
+          SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-          SParticleInstanceNoTex& inst = g_instNoTexData.back();
           viewPoint += rightVec * 0.5f;
           inst.pos[0] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
           inst.pos[1] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
@@ -1521,8 +1514,7 @@ void CElementGen::RenderParticles() {
 
           switch (m_shaderClass) {
           case CElementGenShaders::EShaderClass::Tex: {
-            g_instTexData.emplace_back();
+            SParticleInstanceTex& inst = g_instTexData.emplace_back();
-            SParticleInstanceTex& inst = g_instTexData.back();
             inst.pos[0] = zeus::CVector4f{vec2.x() + size, vec2.y(), vec2.z() + size, 1.f};
             inst.pos[1] = zeus::CVector4f{vec2.x() - size, vec2.y(), vec2.z() + size, 1.f};
             inst.pos[2] = zeus::CVector4f{vec2.x() + size, vec2.y(), vec2.z() - size, 1.f};
@@ -1535,8 +1527,7 @@ void CElementGen::RenderParticles() {
             break;
           }
           case CElementGenShaders::EShaderClass::NoTex: {
-            g_instNoTexData.emplace_back();
+            SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-            SParticleInstanceNoTex& inst = g_instNoTexData.back();
             inst.pos[0] = zeus::CVector4f{vec2.x() + size, vec2.y(), vec2.z() + size, 1.f};
             inst.pos[1] = zeus::CVector4f{vec2.x() - size, vec2.y(), vec2.z() + size, 1.f};
             inst.pos[2] = zeus::CVector4f{vec2.x() + size, vec2.y(), vec2.z() - size, 1.f};
@@ -1559,8 +1550,7 @@ void CElementGen::RenderParticles() {
 
           switch (m_shaderClass) {
           case CElementGenShaders::EShaderClass::Tex: {
-            g_instTexData.emplace_back();
+            SParticleInstanceTex& inst = g_instTexData.emplace_back();
-            SParticleInstanceTex& inst = g_instTexData.back();
             inst.pos[0] = zeus::CVector4f{vec2.x() + sinT + cosT, vec2.y(), vec2.z() + cosT - sinT, 1.f};
             inst.pos[1] = zeus::CVector4f{vec2.x() + sinT - cosT, vec2.y(), vec2.z() + sinT + cosT, 1.f};
             inst.pos[2] = zeus::CVector4f{vec2.x() + (cosT - sinT), vec2.y(), vec2.z() + (-cosT - sinT), 1.f};
@@ -1573,8 +1563,7 @@ void CElementGen::RenderParticles() {
             break;
           }
           case CElementGenShaders::EShaderClass::NoTex: {
-            g_instNoTexData.emplace_back();
+            SParticleInstanceNoTex& inst = g_instNoTexData.emplace_back();
-            SParticleInstanceNoTex& inst = g_instNoTexData.back();
             inst.pos[0] = zeus::CVector4f{vec2.x() + sinT + cosT, vec2.y(), vec2.z() + cosT - sinT, 1.f};
             inst.pos[1] = zeus::CVector4f{vec2.x() + sinT - cosT, vec2.y(), vec2.z() + sinT + cosT, 1.f};
             inst.pos[2] = zeus::CVector4f{vec2.x() + (cosT - sinT), vec2.y(), vec2.z() + (-cosT - sinT), 1.f};
@@ -1718,8 +1707,7 @@ void CElementGen::RenderParticlesIndirectTexture() {
 
     CGraphics::ResolveSpareTexture(clipRect);
 
-    g_instIndTexData.emplace_back();
+    SParticleInstanceIndTex& inst = g_instIndTexData.emplace_back();
-    SParticleInstanceIndTex& inst = g_instIndTexData.back();
     inst.pos[0] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() + size, 1.f};
     inst.pos[1] = zeus::CVector4f{viewPoint.x() - size, viewPoint.y(), viewPoint.z() + size, 1.f};
     inst.pos[2] = zeus::CVector4f{viewPoint.x() + size, viewPoint.y(), viewPoint.z() - size, 1.f};

Runtime/Weapon/CGrappleArm.cpp

@@ -69,8 +69,7 @@ void CGrappleArm::BuildSuitDependencyList() {
   x184_grappleArm.Lock();
   for (const char* name : skDependencyNames) {
     TLockedToken<CDependencyGroup> dgrp = g_SimplePool->GetObj(name);
-    x19c_suitDeps.emplace_back();
+    std::vector<CToken>& depsOut = x19c_suitDeps.emplace_back();
-    std::vector<CToken>& depsOut = x19c_suitDeps.back();
     FillTokenVector(dgrp->GetObjectTagVector(), depsOut);
   }
 }

Runtime/World/CGameArea.cpp

@@ -234,11 +234,10 @@ void CGameArea::CAreaFog::DisableFog() { x0_fogMode = ERglFogMode::None; }
 
 static std::vector<SObjectTag> ReadDependencyList(CInputStream& in) {
   std::vector<SObjectTag> ret;
-  u32 count = in.readUint32Big();
+  const u32 count = in.readUint32Big();
   ret.reserve(count);
   for (u32 i = 0; i < count; ++i) {
-    ret.emplace_back();
+    ret.emplace_back().readMLVL(in);
-    ret.back().readMLVL(in);
   }
   return ret;
 }
@@ -1072,13 +1071,12 @@ void CGameArea::FillInStaticGeometry(bool textures) {
       ibo = ctx.newStaticBuffer(boo::BufferUse::Index, secIt->first, 4, inst.m_hmdlMeta.indexCount);
       ++secIt;
 
-      u32 surfCount = hecl::SBig(*reinterpret_cast<const u32*>(secIt->first));
+      const u32 surfCount = hecl::SBig(*reinterpret_cast<const u32*>(secIt->first));
       inst.m_surfaces.reserve(surfCount);
       inst.m_shaders.reserve(surfCount);
       ++secIt;
       for (u32 j = 0; j < surfCount; ++j) {
-        inst.m_surfaces.emplace_back();
+        CBooSurface& surf = inst.m_surfaces.emplace_back();
-        CBooSurface& surf = inst.m_surfaces.back();
         surf.selfIdx = j;
         athena::io::MemoryReader r(secIt->first, secIt->second);
         surf.m_data.read(r);

Runtime/World/CStateMachine.cpp

@@ -36,8 +36,7 @@ CStateMachine::CStateMachine(CInputStream& in) {
         float arg = in.readFloatBig();
         CAiTrigger* newTrig;
         if (k < lastTriggerIdx) {
-          x10_triggers.emplace_back();
+          newTrig = &x10_triggers.emplace_back();
-          newTrig = &x10_triggers.back();
         } else {
           newTrig = &firstTrig[j];
         }

Runtime/World/CWorld.cpp

@@ -72,27 +72,30 @@ std::vector<CWorld::CRelay> CWorld::CRelay::ReadMemoryRelays(athena::io::MemoryR
 }
 
 void CWorldLayers::ReadWorldLayers(athena::io::MemoryReader& r, int version, CAssetId mlvlId) {
-  if (version <= 14)
+  if (version <= 14) {
     return;
+  }
 
   CWorldLayers ret;
 
   u32 areaCount = r.readUint32Big();
   ret.m_areas.reserve(areaCount);
   for (u32 i = 0; i < areaCount; ++i) {
-    ret.m_areas.emplace_back();
+    auto& area = ret.m_areas.emplace_back();
-    ret.m_areas.back().m_layerCount = r.readUint32Big();
+    area.m_layerCount = r.readUint32Big();
-    ret.m_areas.back().m_layerBits = r.readUint64Big();
+    area.m_layerBits = r.readUint64Big();
   }
 
-  u32 nameCount = r.readUint32Big();
+  const u32 nameCount = r.readUint32Big();
   ret.m_names.reserve(nameCount);
-  for (u32 i = 0; i < nameCount; ++i)
+  for (u32 i = 0; i < nameCount; ++i) {
     ret.m_names.push_back(r.readString());
+  }
 
   areaCount = r.readUint32Big();
-  for (u32 i = 0; i < areaCount; ++i)
+  for (u32 i = 0; i < areaCount; ++i) {
     ret.m_areas[i].m_startNameIdx = r.readUint32Big();
+  }
 
   CWorldState& wldState = g_GameState->StateForWorld(mlvlId);
   wldState.GetLayerState()->InitializeWorldLayers(ret.m_areas);