[chore]: MASSIVE refactor + more vulkan bs

1 files changed, 265 insertions, 265 deletions

diff --git a/src/Engine/Engine.cpp b/src/Engine/Engine.cpp
index e436f4c..059fdda 100644
--- a/src/Engine/Engine.cpp
+++ b/src/Engine/Engine.cpp
@@ -8,68 +8,68 @@
 #define STB_IMAGE_WRITE_IMPLEMENTATION
 #include "stb_image_write.h"
 
-#include "Engine.h"
-#include "Core/Log.h"
-#include "Core/HDRIManager.h"
-#include "Rendering/VertexBuffer.h"
-#include "Rendering/IndexBuffer.h"
+#include "engine.h"
+#include "core/log.h"
+#include "core/hdri_manager.h"
+#include "rendering/vertex_buffer.h"
+#include "rendering/index_buffer.h"
 
 namespace Donut
 {
     Engine::Engine()
-        : m_SagA(glm::vec3(0.0f, 0.0f, 0.0f), 8.54e36f)
+        : m_sag_a(glm::vec3(0.0f, 0.0f, 0.0f), 8.54e36f)
     {
-        m_Width = 1280;
-        m_Height = 720;
+        m_width = 1280;
+        m_height = 720;
 
-        m_Camera.SetCameraMode(CameraMode::Orbital);
-        m_Camera.SetOrbitalRadius(1e11);
-        m_Camera.SetOrbitalLimits(1e9, 1e13);
-        m_Camera.SetOrbitalSpeed(0.01f);
-        m_Camera.SetZoomSpeed(1e10f);
+        m_camera.set_camera_mode(CameraMode::Orbital);
+        m_camera.set_orbital_radius(1e11);
+        m_camera.set_orbital_limits(1e9, 1e13);
+        m_camera.set_orbital_speed(0.01f);
+        m_camera.set_zoom_speed(1e10f);
 
-        m_Objects =
+        m_objects =
         {
-            { glm::vec4(0.00f, 0.00f, 0.00f, m_SagA.m_Rs), glm::vec4(0, 0, 0, 1), static_cast<float>(m_SagA.m_Mass) }
+            { glm::vec4(0.00f, 0.00f, 0.00f, m_sag_a.m_rs), glm::vec4(0, 0, 0, 1), static_cast<float>(m_sag_a.m_mass) }
         };
 
         // The geodesic ray tracer used to be a compute shader; it is now a
-        // fullscreen vertex+fragment pass (see DispatchCompute) so it runs on
+        // fullscreen vertex+fragment pass (see dispatch_compute) so it runs on
         // macOS OpenGL 4.1, which has no compute shaders.
-        m_ComputeProgram = Ref<Shader>(Shader::Create("Assets/Shaders/Geodesic.glsl"));
-        m_ShaderProgram  = Ref<Shader>(Shader::Create("Assets/Shaders/TexturedQuad.glsl"));
-        m_BlurShader     = Ref<Shader>(Shader::Create("Assets/Shaders/Blur.glsl"));
+        m_compute_program = Ref<Shader>(Shader::create("assets/shaders/Geodesic.glsl"));
+        m_shader_program  = Ref<Shader>(Shader::create("assets/shaders/TexturedQuad.glsl"));
+        m_blur_shader     = Ref<Shader>(Shader::create("assets/shaders/Blur.glsl"));
 
-        auto& hdriManager = HDRIManager::Get();
-        m_HDRIEnvironment = hdriManager.GetCurrentHDRI();
-        if (!m_HDRIEnvironment)
+        auto& hdri_manager = HDRIManager::get();
+        m_hdri_environment = hdri_manager.get_current_hdri();
+        if (!m_hdri_environment)
         {
-            hdriManager.SetCurrentHDRI("Assets/HDRI/HDR_blue_nebulae-1.hdr");
-            m_HDRIEnvironment = hdriManager.GetCurrentHDRI();
-            if (!m_HDRIEnvironment)
+            hdri_manager.set_current_hdri("assets/hdri/HDR_blue_nebulae-1.hdr");
+            m_hdri_environment = hdri_manager.get_current_hdri();
+            if (!m_hdri_environment)
                 DONUT_WARN("Failed to load default HDRI, using fallback");
         }
 
-        m_CameraUBO = UniformBuffer::Create(128, 1);
-        m_DiskUBO   = UniformBuffer::Create(sizeof(float) * 5, 2);
+        m_camera_ubo = UniformBuffer::create(128, 1);
+        m_disk_ubo   = UniformBuffer::create(sizeof(float) * 5, 2);
 
-        uint32_t objUBOSize = sizeof(int) + 3 * sizeof(float)
+        uint32_t obj_ubo_size = sizeof(int) + 3 * sizeof(float)
             + 16 * (sizeof(glm::vec4) + sizeof(glm::vec4))
             + 16 * sizeof(float);
-        m_ObjectsUBO = UniformBuffer::Create(objUBOSize, 3);
+        m_objects_ubo = UniformBuffer::create(obj_ubo_size, 3);
 
-        m_SimulationUBO = UniformBuffer::Create(sizeof(int) * 2 + sizeof(float) * 2, 4);
+        m_simulation_ubo = UniformBuffer::create(sizeof(int) * 2 + sizeof(float) * 2, 4);
 
         auto result = QuadVAO();
-        m_QuadVAO = result.first;
-        m_Texture = result.second;
+        m_quad_vao = result.first;
+        m_texture = result.second;
 
         // GLSL 4.10 forbids explicit binding qualifiers on uniform blocks, so
         // associate the geodesic shader's blocks with their UBO binding points
         // from the host side instead.
-        if (m_ComputeProgram)
+        if (m_compute_program)
         {
-            uint32_t prog = m_ComputeProgram->GetRendererID();
+            uint32_t prog = m_compute_program->get_renderer_id();
             struct { const char* name; uint32_t point; } blocks[] =
             {
                 { "Camera", 1 }, { "Disk", 2 }, { "Objects", 3 }, { "Simulation", 4 }
@@ -82,77 +82,77 @@ namespace Donut
             }
         }
 
-        glGenFramebuffers(1, &m_GeodesicFBO);
+        glGenFramebuffers(1, &m_geodesic_fbo);
     }
 
-    void Engine::UpdateWindowDimensions()
+    auto Engine::update_window_dimensions() -> void
     {
-        UpdateComputeDimensions();
+        update_compute_dimensions();
     }
 
-    void Engine::SetWindowDimensions(int width, int height)
+    auto Engine::set_window_dimensions(int width, int height) -> void
     {
-        int oldWidth = m_Width;
-        int oldHeight = m_Height;
-        int oldComputeHeight = m_ComputeHeight;
+        int old_width = m_width;
+        int old_height = m_height;
+        int old_compute_height = m_compute_height;
 
-        m_Width = width;
-        m_Height = height;
+        m_width = width;
+        m_height = height;
 
-        if (oldWidth         != m_Width  ||
-            oldHeight        != m_Height ||
-            oldComputeHeight != m_ComputeHeight)
-            UpdateComputeDimensions();
+        if (old_width         != m_width  ||
+            old_height        != m_height ||
+            old_compute_height != m_compute_height)
+            update_compute_dimensions();
     }
 
-    void Engine::UpdatePerformance(float deltaTime)
+    auto Engine::update_performance(float delta_time) -> void
     {
-        if (deltaTime > 0.0f)
-            m_CurrentFPS = 1.0f / deltaTime;
+        if (delta_time > 0.0f)
+            m_current_fps = 1.0f / delta_time;
     }
 
-    void Engine::UpdateComputeDimensions()
+    auto Engine::update_compute_dimensions() -> void
     {
-        m_Texture = Texture2D::Create(GetComputeWidth(), m_ComputeHeight);
+        m_texture = Texture2D::create(get_compute_width(), m_compute_height);
     }
 
-    void Engine::DrawFullScreenQuad()
+    auto Engine::draw_full_screen_quad() -> void
     {
-        RenderCommand::SetViewport(0, 0, m_Width, m_Height);
+        RenderCommand::set_viewport(0, 0, m_width, m_height);
 
-        m_ShaderProgram->Bind();
-        m_QuadVAO->Bind();
+        m_shader_program->bind();
+        m_quad_vao->bind();
 
-        m_Texture->Bind(0);
-        m_ShaderProgram->SetInt("u_ScreenTexture", 0);
+        m_texture->bind(0);
+        m_shader_program->set_int("u_ScreenTexture", 0);
 
-        RenderCommand::DisableDepthTest();
-        RenderCommand::DrawArrays(6);
-        RenderCommand::EnableDepthTest();
+        RenderCommand::disable_depth_test();
+        RenderCommand::draw_arrays(6);
+        RenderCommand::enable_depth_test();
     }
 
-    void Engine::DrawBlurPass()
+    auto Engine::draw_blur_pass() -> void
     {
-        RenderCommand::SetViewport(0, 0, m_Width, m_Height);
+        RenderCommand::set_viewport(0, 0, m_width, m_height);
 
-        m_BlurShader->Bind();
-        m_QuadVAO->Bind();
+        m_blur_shader->bind();
+        m_quad_vao->bind();
 
-        m_Texture->Bind(0);
-        m_BlurShader->SetInt("u_ScreenTexture", 0);
-        m_BlurShader->SetFloat2("u_Resolution", glm::vec2(m_Width, m_Height));
-        m_BlurShader->SetFloat("u_BlurStrength", m_BlurStrength);
-        m_BlurShader->SetFloat("u_GlowIntensity", m_GlowIntensity);
+        m_texture->bind(0);
+        m_blur_shader->set_int("u_ScreenTexture", 0);
+        m_blur_shader->set_float2("u_Resolution", glm::vec2(m_width, m_height));
+        m_blur_shader->set_float("u_BlurStrength", m_blur_strength);
+        m_blur_shader->set_float("u_GlowIntensity", m_glow_intensity);
 
-        RenderCommand::DisableDepthTest();
-        RenderCommand::DrawArrays(6);
-        RenderCommand::EnableDepthTest();
+        RenderCommand::disable_depth_test();
+        RenderCommand::draw_arrays(6);
+        RenderCommand::enable_depth_test();
     }
 
-    void Engine::DrawGeodesicPass(int cw, int ch)
+    auto Engine::draw_geodesic_pass(int cw, int ch) -> void
     {
-        m_QuadVAO->Bind();
-        RenderCommand::DisableDepthTest();
+        m_quad_vao->bind();
+        RenderCommand::disable_depth_test();
 
 #ifdef __APPLE__
         // macOS aborts any GPU submission that runs longer than a couple of
@@ -160,7 +160,7 @@ namespace Donut
         // a single fullscreen draw, so render it in scissored tiles and flush
         // after each, keeping every submission short enough to survive the
         // watchdog. Compute-capable platforms draw it in one pass.
-        // Largest tile that keeps a tile's worst-case work (tile^2 * stepCap)
+        // Largest tile that keeps a tile's worst-case work (tile^2 * step_cap)
         // inside the safe watchdog zone measured on this GPU (~25M pixel-steps
         // per submission); bigger tiles mean fewer glFinish stalls.
         const int tile = 64;
@@ -172,52 +172,52 @@ namespace Donut
             {
                 int tw = std::min(tile, cw - x);
                 glScissor(x, y, tw, th);
-                RenderCommand::DrawArrays(6);
+                RenderCommand::draw_arrays(6);
                 glFinish();
             }
         }
         glDisable(GL_SCISSOR_TEST);
 #else
-        RenderCommand::DrawArrays(6);
+        RenderCommand::draw_arrays(6);
 #endif
 
-        RenderCommand::EnableDepthTest();
+        RenderCommand::enable_depth_test();
     }
 
-    void Engine::DispatchCompute(const Camera& cam)
+    auto Engine::dispatch_compute(const Camera& cam) -> void
     {
-        auto& hdriManager = HDRIManager::Get();
-        m_HDRIEnvironment = hdriManager.GetCurrentHDRI();
+        auto& hdri_manager = HDRIManager::get();
+        m_hdri_environment = hdri_manager.get_current_hdri();
 
-        int cw = GetComputeWidth();
-        int ch = m_ComputeHeight;
+        int cw = get_compute_width();
+        int ch = m_compute_height;
 
-        // Render the geodesic pass into m_Texture through an FBO. This replaces
-        // the old compute dispatch + imageStore path, which relied on OpenGL
+        // Render the geodesic pass into m_texture through an FBO. This replaces
+        // the old compute dispatch + image_store path, which relied on OpenGL
         // 4.3 compute and 4.2 image load/store that macOS does not provide.
-        glBindFramebuffer(GL_FRAMEBUFFER, m_GeodesicFBO);
-        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_Texture->GetRendererID(), 0);
+        glBindFramebuffer(GL_FRAMEBUFFER, m_geodesic_fbo);
+        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_texture->get_renderer_id(), 0);
         glViewport(0, 0, cw, ch);
 
-        m_ComputeProgram->Bind();
-        UploadCameraUBO(cam);
-        UploadDiskUBO();
-        UploadObjectsUBO(m_Objects);
-        UploadSimulationUBO();
-        m_ComputeProgram->SetFloat2("u_Resolution", glm::vec2(static_cast<float>(cw), static_cast<float>(ch)));
+        m_compute_program->bind();
+        upload_camera_ubo(cam);
+        upload_disk_ubo();
+        upload_objects_ubo(m_objects);
+        upload_simulation_ubo();
+        m_compute_program->set_float2("u_Resolution", glm::vec2(static_cast<float>(cw), static_cast<float>(ch)));
 
-        if (m_HDRIEnvironment)
+        if (m_hdri_environment)
         {
-            m_HDRIEnvironment->Bind(5);
-            m_ComputeProgram->SetInt("u_HDRIEnvironment", 5);
+            m_hdri_environment->bind(5);
+            m_compute_program->set_int("u_HDRIEnvironment", 5);
         }
 
-        DrawGeodesicPass(cw, ch);
+        draw_geodesic_pass(cw, ch);
 
         glBindFramebuffer(GL_FRAMEBUFFER, 0);
     }
 
-    void Engine::UploadCameraUBO(const Camera& cam)
+    auto Engine::upload_camera_ubo(const Camera& cam) -> void
     {
         struct UBOData
         {
@@ -225,80 +225,80 @@ namespace Donut
             glm::vec3 right;   float _pad1;
             glm::vec3 up;      float _pad2;
             glm::vec3 forward; float _pad3;
-            float tanHalfFov;
+            float tan_half_fov;
             float aspect;
             bool  moving;
             int   _pad4;
         } data;
 
-        glm::vec3 fwd   = glm::normalize(cam.GetOrbitalTarget() - cam.GetOrbitalPosition());
+        glm::vec3 fwd   = glm::normalize(cam.get_orbital_target() - cam.get_orbital_position());
         glm::vec3 up    = glm::vec3(0, 1, 0);
         glm::vec3 right = glm::normalize(glm::cross(fwd, up));
         up = glm::cross(right, fwd);
 
-        data.pos        = cam.GetOrbitalPosition();
+        data.pos        = cam.get_orbital_position();
         data.right      = right;
         data.up         = up;
         data.forward    = fwd;
-        data.tanHalfFov = static_cast<float>(tan(glm::radians(60.0f * 0.5f)));
-        data.aspect     = static_cast<float>(GetComputeWidth()) / static_cast<float>(m_ComputeHeight);
-        data.moving     = cam.IsDragging() || cam.IsPanning();
+        data.tan_half_fov = static_cast<float>(tan(glm::radians(60.0f * 0.5f)));
+        data.aspect     = static_cast<float>(get_compute_width()) / static_cast<float>(m_compute_height);
+        data.moving     = cam.is_dragging() || cam.is_panning();
 
-        m_CameraUBO->SetData(&data, sizeof(UBOData));
-        m_CameraUBO->Bind(1);
+        m_camera_ubo->set_data(&data, sizeof(UBOData));
+        m_camera_ubo->bind(1);
     }
 
-    void Engine::UploadObjectsUBO(const std::vector<ObjectData>& objs)
+    auto Engine::upload_objects_ubo(const std::vector<ObjectData>& objs) -> void
     {
         struct UBOData
         {
-            int numObjects;
+            int num_objects;
             float _pad0, _pad1, _pad2;
-            glm::vec4 posRadius[16];
+            glm::vec4 pos_radius[16];
             glm::vec4 color[16];
             float mass[16];
         } data;
 
         size_t count = std::min(objs.size(), size_t(16));
-        data.numObjects = static_cast<int>(count);
+        data.num_objects = static_cast<int>(count);
 
         for (size_t i = 0; i < count; ++i)
         {
-            data.posRadius[i] = objs[i].m_PosRadius;
-            data.color[i] = objs[i].m_Color;
-            data.mass[i] = objs[i].m_Mass;
+            data.pos_radius[i] = objs[i].m_pos_radius;
+            data.color[i] = objs[i].m_color;
+            data.mass[i] = objs[i].m_mass;
         }
 
-        m_ObjectsUBO->SetData(&data, sizeof(data));
-        m_ObjectsUBO->Bind(3);
+        m_objects_ubo->set_data(&data, sizeof(data));
+        m_objects_ubo->bind(3);
     }
 
-    void Engine::UploadDiskUBO()
+    auto Engine::upload_disk_ubo() -> void
     {
-        float r1 = static_cast<float>(m_SagA.m_Rs * 2.2);
-        float r2 = static_cast<float>(m_SagA.m_Rs * 5.2);
+        float r1 = static_cast<float>(m_sag_a.m_rs * 2.2);
+        float r2 = static_cast<float>(m_sag_a.m_rs * 5.2);
         float num = 2.0f;
-        float thickness = static_cast<float>(m_SagA.m_Rs * m_DiskThickness);
-        float diskData[5] = { r1, r2, num, thickness, m_DiskDensity };
+        float thickness = static_cast<float>(m_sag_a.m_rs * m_disk_thickness);
+        float disk_data[5] = { r1, r2, num, thickness, m_disk_density };
 
-        m_DiskUBO->SetData(diskData, sizeof(diskData));
-        m_DiskUBO->Bind(2);
+        m_disk_ubo->set_data(disk_data, sizeof(disk_data));
+        m_disk_ubo->bind(2);
     }
 
-    void Engine::UploadSimulationUBO()
+    auto Engine::upload_simulation_ubo() -> void
     {
         struct UBOData
         {
-            int maxStepsMoving;
-            int maxStepsStatic;
-            float earlyExitDistance;
+            int max_steps_moving;
+            int max_steps_static;
+            float early_exit_distance;
             float time;
         } data;
 
-        data.maxStepsMoving    = m_MaxStepsMoving;
-        data.maxStepsStatic    = m_MaxStepsStatic;
-        data.earlyExitDistance = m_EarlyExitDistance;
-        data.time              = static_cast<float>(glfwGetTime()) * m_RotationSpeed;
+        data.max_steps_moving    = m_max_steps_moving;
+        data.max_steps_static    = m_max_steps_static;
+        data.early_exit_distance = m_early_exit_distance;
+        data.time              = static_cast<float>(glfwGetTime()) * m_rotation_speed;
 
 #ifdef __APPLE__
         // macOS has no compute shaders, so the geodesic pass runs as a tiled
@@ -307,58 +307,58 @@ namespace Donut
         // GPU, so cap them here. Windows/Linux keep the full step count.
         // While the camera moves, render cheaply so interaction stays smooth;
         // when it settles, spend more steps for a cleaner image. Both stay well
-        // under the per-tile GPU-watchdog budget (see DrawGeodesicPass).
-        data.maxStepsMoving = std::min(data.maxStepsMoving, 4000);
-        data.maxStepsStatic = std::min(data.maxStepsStatic, 6000);
+        // under the per-tile GPU-watchdog budget (see draw_geodesic_pass).
+        data.max_steps_moving = std::min(data.max_steps_moving, 4000);
+        data.max_steps_static = std::min(data.max_steps_static, 6000);
 #endif
 
-        m_SimulationUBO->SetData(&data, sizeof(data));
-        m_SimulationUBO->Bind(4);
+        m_simulation_ubo->set_data(&data, sizeof(data));
+        m_simulation_ubo->bind(4);
     }
 
-    void Engine::UpdatePhysics(float deltaTime)
+    auto Engine::update_physics(float delta_time) -> void
     {
-        for (auto& obj : m_Objects)
+        for (auto& obj : m_objects)
         {
-            for (auto& obj2 : m_Objects)
+            for (auto& obj2 : m_objects)
             {
                 if (&obj == &obj2) continue;
-                float dx = obj2.m_PosRadius.x - obj.m_PosRadius.x;
-                float dy = obj2.m_PosRadius.y - obj.m_PosRadius.y;
-                float dz = obj2.m_PosRadius.z - obj.m_PosRadius.z;
+                float dx = obj2.m_pos_radius.x - obj.m_pos_radius.x;
+                float dy = obj2.m_pos_radius.y - obj.m_pos_radius.y;
+                float dz = obj2.m_pos_radius.z - obj.m_pos_radius.z;
                 float distance = sqrt(dx * dx + dy * dy + dz * dz);
                 if (distance > 0)
                 {
                     std::vector<double> direction = {dx / distance, dy / distance, dz / distance};
-                    double Gforce = (G * obj.m_Mass * obj2.m_Mass) / (distance * distance);
-                    double acc1 = Gforce / obj.m_Mass;
+                    double Gforce = (G * obj.m_mass * obj2.m_mass) / (distance * distance);
+                    double acc1 = Gforce / obj.m_mass;
                     std::vector<double> acc = {direction[0] * acc1, direction[1] * acc1, direction[2] * acc1};
 
-                    if (m_Gravity)
+                    if (m_gravity)
                     {
-                        obj.m_Velocity.x += static_cast<float>(acc[0]);
-                        obj.m_Velocity.y += static_cast<float>(acc[1]);
-                        obj.m_Velocity.z += static_cast<float>(acc[2]);
+                        obj.m_velocity.x += static_cast<float>(acc[0]);
+                        obj.m_velocity.y += static_cast<float>(acc[1]);
+                        obj.m_velocity.z += static_cast<float>(acc[2]);
 
-                        obj.m_PosRadius.x += static_cast<float>(obj.m_Velocity.x);
-                        obj.m_PosRadius.y += static_cast<float>(obj.m_Velocity.y);
-                        obj.m_PosRadius.z += static_cast<float>(obj.m_Velocity.z);
+                        obj.m_pos_radius.x += static_cast<float>(obj.m_velocity.x);
+                        obj.m_pos_radius.y += static_cast<float>(obj.m_velocity.y);
+                        obj.m_pos_radius.z += static_cast<float>(obj.m_velocity.z);
                     }
                 }
             }
         }
     }
 
-    void Engine::RenderScene()
+    auto Engine::render_scene() -> void
     {
-        RenderCommand::Clear();
-        m_ShaderProgram->Bind();
-        m_QuadVAO->Bind();
-        m_Texture->Bind(0);
-        RenderCommand::DrawArrays(6);
+        RenderCommand::clear();
+        m_shader_program->bind();
+        m_quad_vao->bind();
+        m_texture->bind(0);
+        RenderCommand::draw_arrays(6);
     }
 
-    Ref<Shader> Engine::CreateComputeProgram(const char* path)
+    auto Engine::create_compute_program(const char* path) -> Ref<Shader>
     {
         std::ifstream in(path);
         if(!in.is_open())
@@ -368,13 +368,13 @@ namespace Donut
         }
         std::stringstream ss;
         ss << in.rdbuf();
-        std::string srcStr = ss.str();
-        return Ref<Shader>(Shader::CreateCompute("ComputeShader", srcStr));
+        std::string src_str = ss.str();
+        return Ref<Shader>(Shader::create_compute("ComputeShader", src_str));
     }
 
-    std::pair<Ref<VertexArray>, Ref<Texture2D>> Engine::QuadVAO()
+    auto Engine::QuadVAO() -> std::pair<Ref<VertexArray>, Ref<Texture2D>>
     {
-        float quadVertices[] =
+        float quad_vertices[] =
         {
             // Positions   // TexCoords
             -1.0f,  1.0f,  0.0f, 1.0f,
@@ -385,82 +385,82 @@ namespace Donut
              1.0f,  1.0f,  1.0f, 1.0f
         };
 
-        auto vertexBuffer = Ref<VertexBuffer>(VertexBuffer::Create(quadVertices, static_cast<uint32_t>(sizeof(quadVertices))));
+        auto vertex_buffer = Ref<VertexBuffer>(VertexBuffer::create(quad_vertices, static_cast<uint32_t>(sizeof(quad_vertices))));
         VertexBufferLayout layout;
-        layout.Push<float>(2); // Position (x, y)
-        layout.Push<float>(2); // TexCoord (u, v)
-        vertexBuffer->SetLayout(layout);
+        layout.push<float>(2); // Position (x, y)
+        layout.push<float>(2); // TexCoord (u, v)
+        vertex_buffer->set_layout(layout);
 
-        auto vertexArray = Ref<VertexArray>(VertexArray::Create());
-        vertexArray->AddVertexBuffer(vertexBuffer);
-        auto texture = Texture2D::Create(GetComputeWidth(), m_ComputeHeight);
+        auto vertex_array = Ref<VertexArray>(VertexArray::create());
+        vertex_array->add_vertex_buffer(vertex_buffer);
+        auto texture = Texture2D::create(get_compute_width(), m_compute_height);
 
-        return { vertexArray, texture };
+        return { vertex_array, texture };
     }
 
-    void Engine::LoadObjectsFromScene(const std::vector<Donut::Object>& objects)
+    auto Engine::load_objects_from_scene(const std::vector<Donut::Object>& objects) -> void
     {
-        m_Objects.clear();
-        m_Objects.push_back(
+        m_objects.clear();
+        m_objects.push_back(
         {
-            glm::vec4(0.00f, 0.00f, 0.00f, m_SagA.m_Rs),
+            glm::vec4(0.00f, 0.00f, 0.00f, m_sag_a.m_rs),
             glm::vec4(0, 0, 0, 1),
-            static_cast<float>(m_SagA.m_Mass)
+            static_cast<float>(m_sag_a.m_mass)
         });
 
         for (const auto& obj : objects)
         {
-            ObjectData engineObj;
+            ObjectData engine_obj;
 
-            float scaleFactor = 1e10f;
-            engineObj.m_PosRadius = glm::vec4
+            float scale_factor = 1e10f;
+            engine_obj.m_pos_radius = glm::vec4
             (
-                obj.m_Centre.x * scaleFactor,
-                obj.m_Centre.y * scaleFactor,
-                obj.m_Centre.z * scaleFactor,
-                obj.m_Radius * scaleFactor
+                obj.m_centre.x * scale_factor,
+                obj.m_centre.y * scale_factor,
+                obj.m_centre.z * scale_factor,
+                obj.m_radius * scale_factor
             );
 
-            engineObj.m_Color = glm::vec4(obj.m_Material.m_Color, 1.0f);
+            engine_obj.m_color = glm::vec4(obj.m_material.m_color, 1.0f);
 
-            float volume  = (4.0f / 3.0f) * 3.14159f * engineObj.m_PosRadius.w * engineObj.m_PosRadius.w * engineObj.m_PosRadius.w;
+            float volume  = (4.0f / 3.0f) * 3.14159f * engine_obj.m_pos_radius.w * engine_obj.m_pos_radius.w * engine_obj.m_pos_radius.w;
             float density = 1e12f;
-            engineObj.m_Mass     = volume * density;
-            engineObj.m_Velocity = glm::vec3(0.0f, 0.0f, 0.0f);
+            engine_obj.m_mass     = volume * density;
+            engine_obj.m_velocity = glm::vec3(0.0f, 0.0f, 0.0f);
 
-            m_Objects.push_back(engineObj);
+            m_objects.push_back(engine_obj);
         }
 
         DONUT_INFO("Loaded {} objects from WorldBuilder scene (scaled up by {})", objects.size(), 1e10f);
-        PrintObjectInfo();
+        print_object_info();
     }
 
-    void Engine::PrintObjectInfo() const
+    auto Engine::print_object_info() const -> void
     {
         DONUT_INFO("=== Object Information ===");
-        DONUT_INFO("Total objects: {}", m_Objects.size());
+        DONUT_INFO("Total objects: {}", m_objects.size());
 
-        for (size_t i = 0; i < m_Objects.size(); ++i)
+        for (size_t i = 0; i < m_objects.size(); ++i)
         {
-            const auto& obj = m_Objects[i];
+            const auto& obj = m_objects[i];
             DONUT_INFO("Object {}: Pos=({}, {}, {}), Radius={}, Mass={}, Color=({}, {}, {})",
                 i,
-                obj.m_PosRadius.x, obj.m_PosRadius.y, obj.m_PosRadius.z,
-                obj.m_PosRadius.w,
-                obj.m_Mass,
-                obj.m_Color.x, obj.m_Color.y, obj.m_Color.z
+                obj.m_pos_radius.x, obj.m_pos_radius.y, obj.m_pos_radius.z,
+                obj.m_pos_radius.w,
+                obj.m_mass,
+                obj.m_color.x, obj.m_color.y, obj.m_color.z
             );
         }
         DONUT_INFO("Camera position: ({}, {}, {})",
-            m_Camera.GetOrbitalPosition().x,
-            m_Camera.GetOrbitalPosition().y,
-            m_Camera.GetOrbitalPosition().z
+            m_camera.get_orbital_position().x,
+            m_camera.get_orbital_position().y,
+            m_camera.get_orbital_position().z
         );
-        DONUT_INFO("Camera radius: {}", m_Camera.GetOrbitalRadius());
+        DONUT_INFO("Camera radius: {}", m_camera.get_orbital_radius());
         DONUT_INFO("========================");
     }
 
-    void Engine::ExportHighResFrame(const std::string& filename, int width, int height)
+    auto Engine::export_high_res_frame(const std::string& filename, int width, int height) -> void
     {
         DONUT_INFO("Exporting high-resolution frame: {}x{} to {}", width, height, filename);
 
@@ -476,48 +476,48 @@ namespace Donut
             return;
         }
 
-        int originalWidth = m_Width;
-        int originalHeight = m_Height;
-        int originalComputeHeight = m_ComputeHeight;
+        int original_width = m_width;
+        int original_height = m_height;
+        int original_compute_height = m_compute_height;
 
-        m_Width = width;
-        m_Height = height;
-        m_ComputeHeight = height;
+        m_width = width;
+        m_height = height;
+        m_compute_height = height;
 
-        int computeHeight = height;
-        int computeWidth = (width * computeHeight) / height;
+        int compute_height = height;
+        int compute_width = (width * compute_height) / height;
 
-        if (computeWidth <= 0 || computeHeight <= 0)
+        if (compute_width <= 0 || compute_height <= 0)
         {
-            DONUT_ERROR("Invalid compute dimensions: {}x{}", computeWidth, computeHeight);
+            DONUT_ERROR("Invalid compute dimensions: {}x{}", compute_width, compute_height);
             return;
         }
 
-        FramebufferSpecification fbSpec;
-        fbSpec.Width = width;
-        fbSpec.Height = height;
-        fbSpec.Attachments = { FramebufferTextureFormat::RGBA8 };
+        FramebufferSpecification fb_spec;
+        fb_spec.Width = width;
+        fb_spec.Height = height;
+        fb_spec.attachments = { FramebufferTextureFormat::RGBA8 };
 
-        auto highResFramebuffer = Framebuffer::Create(fbSpec);
-        if (!highResFramebuffer)
+        auto high_res_framebuffer = Framebuffer::create(fb_spec);
+        if (!high_res_framebuffer)
         {
             DONUT_ERROR("Failed to create high-resolution framebuffer");
             return;
         }
 
-        auto highResTexture = Texture2D::Create(computeWidth, computeHeight);
-        if (!highResTexture)
+        auto high_res_texture = Texture2D::create(compute_width, compute_height);
+        if (!high_res_texture)
         {
             DONUT_ERROR("Failed to create high-resolution texture");
             return;
         }
 
-        // Render the geodesic pass into highResTexture through the geodesic FBO.
-        glBindFramebuffer(GL_FRAMEBUFFER, m_GeodesicFBO);
-        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, highResTexture->GetRendererID(), 0);
-        glViewport(0, 0, computeWidth, computeHeight);
+        // Render the geodesic pass into high_res_texture through the geodesic FBO.
+        glBindFramebuffer(GL_FRAMEBUFFER, m_geodesic_fbo);
+        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, high_res_texture->get_renderer_id(), 0);
+        glViewport(0, 0, compute_width, compute_height);
 
-        m_ComputeProgram->Bind();
+        m_compute_program->bind();
 
         struct UBOData
         {
@@ -525,90 +525,90 @@ namespace Donut
             glm::vec3 right;   float _pad1;
             glm::vec3 up;      float _pad2;
             glm::vec3 forward; float _pad3;
-            float tanHalfFov;
+            float tan_half_fov;
             float aspect;
             bool  moving;
             int   _pad4;
         } data;
 
-        glm::vec3 fwd   = glm::normalize(m_Camera.GetOrbitalTarget() - m_Camera.GetOrbitalPosition());
+        glm::vec3 fwd   = glm::normalize(m_camera.get_orbital_target() - m_camera.get_orbital_position());
         glm::vec3 up    = glm::vec3(0, 1, 0);
         glm::vec3 right = glm::normalize(glm::cross(fwd, up));
         up = glm::cross(right, fwd);
 
-        data.pos        = m_Camera.GetOrbitalPosition();
+        data.pos        = m_camera.get_orbital_position();
         data.right      = right;
         data.up         = up;
         data.forward    = fwd;
-        data.tanHalfFov = static_cast<float>(tan(glm::radians(60.0f * 0.5f)));
-        data.aspect     = static_cast<float>(computeWidth) / static_cast<float>(computeHeight);
-        data.moving     = m_Camera.IsDragging() || m_Camera.IsPanning();
+        data.tan_half_fov = static_cast<float>(tan(glm::radians(60.0f * 0.5f)));
+        data.aspect     = static_cast<float>(compute_width) / static_cast<float>(compute_height);
+        data.moving     = m_camera.is_dragging() || m_camera.is_panning();
 
-        m_CameraUBO->SetData(&data, sizeof(UBOData));
-        m_CameraUBO->Bind(1);
+        m_camera_ubo->set_data(&data, sizeof(UBOData));
+        m_camera_ubo->bind(1);
 
-        UploadDiskUBO();
-        UploadObjectsUBO(m_Objects);
-        UploadSimulationUBO();
-        m_ComputeProgram->SetFloat2("u_Resolution", glm::vec2(static_cast<float>(computeWidth), static_cast<float>(computeHeight)));
+        upload_disk_ubo();
+        upload_objects_ubo(m_objects);
+        upload_simulation_ubo();
+        m_compute_program->set_float2("u_Resolution", glm::vec2(static_cast<float>(compute_width), static_cast<float>(compute_height)));
 
-        if (m_HDRIEnvironment)
+        if (m_hdri_environment)
         {
-            m_HDRIEnvironment->Bind(5);
-            m_ComputeProgram->SetInt("u_HDRIEnvironment", 5);
+            m_hdri_environment->bind(5);
+            m_compute_program->set_int("u_HDRIEnvironment", 5);
         }
 
-        DrawGeodesicPass(computeWidth, computeHeight);
+        draw_geodesic_pass(compute_width, compute_height);
 
         // Display the rendered frame into the high-res framebuffer for read-back.
-        highResFramebuffer->Bind();
-        RenderCommand::SetViewport(0, 0, width, height);
-        RenderCommand::Clear();
+        high_res_framebuffer->bind();
+        RenderCommand::set_viewport(0, 0, width, height);
+        RenderCommand::clear();
 
-        m_ShaderProgram->Bind();
-        m_QuadVAO->Bind();
+        m_shader_program->bind();
+        m_quad_vao->bind();
 
-        highResTexture->Bind(0);
-        m_ShaderProgram->SetInt("u_ScreenTexture", 0);
+        high_res_texture->bind(0);
+        m_shader_program->set_int("u_ScreenTexture", 0);
 
-        RenderCommand::DisableDepthTest();
-        RenderCommand::DrawArrays(6);
-        RenderCommand::EnableDepthTest();
+        RenderCommand::disable_depth_test();
+        RenderCommand::draw_arrays(6);
+        RenderCommand::enable_depth_test();
 
         std::vector<unsigned char> pixels(width * height * 4);
         DONUT_INFO("Reading {} pixels from framebuffer...", width * height);
-        RenderCommand::ReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
+        RenderCommand::read_pixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
 
         DONUT_INFO("Flipping image vertically...");
-        std::vector<unsigned char> flippedPixels(width * height * 4);
+        std::vector<unsigned char> flipped_pixels(width * height * 4);
         for (int y = 0; y < height; ++y)
         {
             for (int x = 0; x < width; ++x)
             {
-                int srcIndex = (y * width + x) * 4;
-                int dstIndex = ((height - 1 - y) * width + x) * 4;
-                flippedPixels[dstIndex + 0] = pixels[srcIndex + 0]; // R
-                flippedPixels[dstIndex + 1] = pixels[srcIndex + 1]; // G
-                flippedPixels[dstIndex + 2] = pixels[srcIndex + 2]; // B
-                flippedPixels[dstIndex + 3] = pixels[srcIndex + 3]; // A
+                int src_index = (y * width + x) * 4;
+                int dst_index = ((height - 1 - y) * width + x) * 4;
+                flipped_pixels[dst_index + 0] = pixels[src_index + 0]; // R
+                flipped_pixels[dst_index + 1] = pixels[src_index + 1]; // G
+                flipped_pixels[dst_index + 2] = pixels[src_index + 2]; // B
+                flipped_pixels[dst_index + 3] = pixels[src_index + 3]; // A
             }
         }
 
         DONUT_INFO("Saving PNG file: {}...", filename);
-        int result = stbi_write_png(filename.c_str(), width, height, 4, flippedPixels.data(), width * 4);
+        int result = stbi_write_png(filename.c_str(), width, height, 4, flipped_pixels.data(), width * 4);
 
         if (result)
             DONUT_INFO("Successfully exported high-resolution frame to: {}", filename);
         else
             DONUT_ERROR("Failed to export high-resolution frame to: {}", filename);
 
-        highResFramebuffer->Unbind();
+        high_res_framebuffer->unbind();
 
-        m_Width         = originalWidth;
-        m_Height        = originalHeight;
-        m_ComputeHeight = originalComputeHeight;
+        m_width         = original_width;
+        m_height        = original_height;
+        m_compute_height = original_compute_height;
 
-        RenderCommand::SetViewport(0, 0, originalWidth, originalHeight);
+        RenderCommand::set_viewport(0, 0, original_width, original_height);
     }
 
 }