Merge branch 'fastgltf' into jolt

Update positions on 60tps, position of objects can be modified while
physic simulation is running. Position is owned by transform comps but
the truth is held by the physics engine for affected entities

editor/include/editor.hpp

@@ -6,10 +6,13 @@
 
 #include "open_engine/renderer/renderer3d.hpp"
 #include "open_engine/scene/components.hpp"
-#include "open_engine/scene/scene_serializer.hpp"
 #include "panels/content_browser.hpp"
 #include "panels/scene_hierarchy.hpp"
 
+#include <Jolt/Physics/Collision/Shape/Shape.h>
+#include <Jolt/Math/Real.h>
+#include <Jolt/Math/Vec3.h>
+#include <Jolt/Physics/Body/BodyCreationSettings.h>
 #include <glm/ext/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
 #include <glm/matrix.hpp>
@@ -92,33 +95,39 @@ namespace OpenEngine {
 
                 editor_camera = EditorCamera(30.0f, 1920.0f/1080.0f, 0.1f, 1000.0f);
 
+                // TODO: Add license
                 icons["play"] = Texture2D::Create("resources/textures/icons/play.png");
                 icons["stop"] = Texture2D::Create("resources/textures/icons/stop.png");
 
+                // =============================================
                 Entity cube = scene->CreateEntity("cube");
 
-
+                auto& tc = cube.AddComponent<TransformComponent>();
-                cube.AddComponent<TransformComponent>();
 
                 Ref<Mesh> mesh = CreateCube(cube);
 
-                cube.AddComponent<MeshComponent>(mesh);
+                auto& mc = cube.AddComponent<MeshComponent>(mesh);
+                mc.primitive_type = PrimitiveType::Cube;
 
+                // =============================================
                 Entity quad = scene->CreateEntity("quad");
                 quad.AddComponent<TransformComponent>();
                 quad.GetComponents<TransformComponent>().translation = {0, 0, 0};
 
                 Ref<Mesh> quad_mesh = CreateQuad(quad, true);
 
-                quad.AddComponent<MeshComponent>(quad_mesh);
+                auto& mc3 = quad.AddComponent<MeshComponent>(quad_mesh);
+                mc3.primitive_type = PrimitiveType::Quad;
 
+                // =============================================
                 Entity cube2 = scene->CreateEntity("cube2");
                 cube2.AddComponent<TransformComponent>();
                 cube2.GetComponents<TransformComponent>().translation = {2, 0, 0};
 
                 Ref<Mesh> mesh2 = CreateCube(cube2);
 
-                cube2.AddComponent<MeshComponent>(mesh2);
+                auto& mc2 = cube2.AddComponent<MeshComponent>(mesh2);
+                mc2.primitive_type = PrimitiveType::Cube;
 
                 /*
                 auto view = scene->GetRegistry().view<TagComponent>();
@@ -129,7 +138,6 @@ namespace OpenEngine {
                 }
                 */
 
-                // TODO: Add file texture. Get free icons and add license
                 //icons["folder"] = Texture2D::Create("resources/textures/icons/folder.png");
                 /*
                 for (float i = 0; i < 200; i++) {
@@ -179,7 +187,6 @@ namespace OpenEngine {
                 RenderCommand::Clear();
                 framebuffer->ClearBufferI(1, -1);
 
-
                 switch (state) {
                     case PlayState::Play: {
                         scene->OnUpdateRuntime();
@@ -206,6 +213,7 @@ namespace OpenEngine {
                 static bool clicked = false;
                 // Mouse Picking
                 if (Input::IsMouseButtonPressed(MouseCode::ButtonLeft)
+                        && !Application::Get().GetImGuiLayer()->GetBlockEvents()
                         && mouse_x >= 0 && mouse_y >= 0
                         && mouse_x < (int)viewport_size.x
                         && mouse_y < (int)viewport_size.y
@@ -278,6 +286,10 @@ namespace OpenEngine {
                         guizmo_operation = ImGuizmo::OPERATION::SCALE;
                         break;
                     }
+                    case KeyCode::T: {
+                        guizmo_operation = ImGuizmo::OPERATION::UNIVERSAL;
+                        break;
+                    }
                     case KeyCode::Delete: {
                         scene->MarkEntityForDeletion(selected_entity);
                         scene_hierarchy.ClearSelection();
@@ -352,7 +364,7 @@ namespace OpenEngine {
                 bool was_focused = viewport_focused;
                 viewport_focused = ImGui::IsWindowFocused(ImGuiFocusedFlags_RootWindow);
                 viewport_hovered = ImGui::IsWindowHovered(ImGuiHoveredFlags_RootWindow);
-                Application::Get().GetImGuiLayer()->SetBlockEvents((!viewport_focused && !viewport_hovered) || ImGui::IsAnyItemActive());
+                Application::Get().GetImGuiLayer()->SetBlockEvents(ImGui::IsAnyItemActive());
 
                 if (viewport_focused && !was_focused)
                     editor_camera.ResetMousePosition();
@@ -563,10 +575,12 @@ namespace OpenEngine {
             void OnScenePlay()
             {
                 state = PlayState::Play;
+                scene->OnRuntimeStart();
             }
             void OnSceneStop()
             {
                 state = PlayState::Edit;
+                scene->OnRuntimeStop();
             }
 
         private:

editor/include/editor_component.hpp

@@ -17,6 +17,11 @@ namespace OpenEngine {
     void SpriteOnImGuiRender(entt::registry& registry, entt::entity entity);
     void CameraOnImGuiRender(entt::registry& registry, entt::entity entity);
     void MeshOnImGuiRender(entt::registry&registry, entt::entity entity);
+    void MaterialOnImGuiRender(entt::registry& registry, entt::entity entity);
+    void BodyOnImGuiRender(entt::registry& registry, entt::entity entity);
+    void SphereShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
+    void BoxShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
+    void PlaneShapeOnImGuiRender(entt::registry& registry, entt::entity entity);
 }
 
 #endif // EDITOR_COMPONENT_HPP

editor/include/panels/content_browser.hpp

@@ -18,6 +18,7 @@ namespace OpenEngine {
         private:
             std::filesystem::path current_directory;
             Ref<Texture2D> folder_icon;
+            Ref<Texture2D> file_icon;
     };
 
 }

editor/src/editor_component.cpp

@@ -1,5 +1,10 @@
 #include "imgui.h"
+#include "open_engine/renderer/renderer3d.hpp"
+#include "open_engine/scene/components.hpp"
+#include <Jolt/Physics/Body/MotionType.h>
 #include <editor_component.hpp>
+#include <entt/entity/fwd.hpp>
+#include <glm/gtc/type_ptr.hpp>
 #include <open_engine.hpp>
 
 namespace OpenEngine {
@@ -91,6 +96,7 @@ namespace OpenEngine {
         if (ImGui::InputText("##tagEditor", buffer, sizeof(buffer), ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll)
                 || (!ImGui::IsItemActive() && ImGui::IsMouseClicked(0)))
             tag = buffer;
+        ImGui::Spacing();
     };
 
     void TransformOnImGuiRender(entt::registry& registry, entt::entity entity) 
@@ -101,6 +107,7 @@ namespace OpenEngine {
         DrawVec3Control("Rotation", rotation_comp);
         transform.rotation = glm::radians(rotation_comp);
         DrawVec3Control("Scale", transform.scale);
+        ImGui::Spacing();
     };
     
     void SpriteOnImGuiRender(entt::registry& registry, entt::entity entity) 
@@ -171,8 +178,121 @@ namespace OpenEngine {
 
     };
 
-    void MeshOnImGuiRender(entt::registry&registry, entt::entity entity)
+    void MeshOnImGuiRender(entt::registry& registry, entt::entity entity)
     {
+        auto& mesh_component = registry.get<MeshComponent>(entity); 
 
+        const char* items[] = { "None", "Quad", "Cube" };
+
+        int item_selected_idx = (int)mesh_component.primitive_type;
+        if (ImGui::BeginCombo("Mesh", items[item_selected_idx])) {
+            for (int n = 0; n < 3; n++) {
+                const bool is_selected = (item_selected_idx == n);
+                if (ImGui::Selectable(items[n], is_selected))
+                    item_selected_idx = n;
+
+                // Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
+                if (is_selected)
+                    ImGui::SetItemDefaultFocus();
+            }
+            ImGui::EndCombo();
+        }
+
+        if ((int)mesh_component.primitive_type == (item_selected_idx))
+            return;
+
+        mesh_component.primitive_type = (PrimitiveType)(item_selected_idx);
+        switch (mesh_component.primitive_type) {
+            case OpenEngine::PrimitiveType::Quad:
+                {
+                    mesh_component.mesh = CreateQuad((uint32_t)entity);
+                    break;
+                }
+            case OpenEngine::PrimitiveType::Cube:
+                {
+                    mesh_component.mesh = CreateCube((uint32_t)entity);
+                    break;
+                }
+            default:
+                mesh_component.mesh = nullptr;
+                break;
+        }
+    }
+
+    void MaterialOnImGuiRender(entt::registry& registry, entt::entity entity)
+    {
+        auto& material = registry.get<MaterialComponent>(entity).material;
+
+        ImGui::SliderFloat4("Albedo", glm::value_ptr(material.albedo), 0, 1);
+        ImGui::SliderFloat("Roughness", &material.roughness, 0, 1);
+        ImGui::SliderFloat("Metallic", &material.metallic, 0, 1);
+        ImGui::SliderFloat("Ambient strength", &material.ambient_strength, 0, 1);
+        ImGui::SliderFloat("Specular strength", &material.specular_strength, 0, 10);
+    }
+
+    void BodyOnImGuiRender(entt::registry &registry, entt::entity entity)
+    {
+        auto& body_comp = registry.get<PhysicsBodyComponent>(entity);
+
+        const char* items[] = { "Static", "Kinematic", "Dynamic" };
+        int item_selected_idx = body_comp.type;
+
+        if (ImGui::BeginCombo("Body type", items[item_selected_idx])) {
+            for (int n = 0; n < 3; n++)
+            {
+                const bool is_selected = (item_selected_idx == n);
+                if (ImGui::Selectable(items[n], is_selected))
+                    item_selected_idx = n;
+
+                // Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
+                if (is_selected)
+                    ImGui::SetItemDefaultFocus();
+            }
+            ImGui::EndCombo();
+        }
+
+        body_comp.type = item_selected_idx;
+
+        ImGui::SliderFloat("Linear damping", &body_comp.linear_damping, 0, 1);
+        ImGui::SliderFloat("Angular damping", &body_comp.angular_damping, 0, 1);
+        ImGui::SliderFloat("Gravity factor", &body_comp.gravity_factor, 0, 1);
+        ImGui::SliderFloat("Bounciness", &body_comp.restitution, 0, 1);
+        ImGui::SliderFloat("Friction", &body_comp.friction, 0, 1);
+    }
+
+    void SphereShapeOnImGuiRender(entt::registry &registry, entt::entity entity)
+    {
+        auto& sphere_comp = registry.get<SphereShapeComponent>(entity);
+        
+        ImGui::DragFloat("Radius",
+                &sphere_comp.radius,
+                0.1f,
+                0.11f, FLT_MAX,
+                "%.2f",
+                ImGuiSliderFlags_AlwaysClamp);
+    }
+
+    void BoxShapeOnImGuiRender(entt::registry &registry, entt::entity entity)
+    {
+        auto& box_comp = registry.get<BoxShapeComponent>(entity);
+        
+        ImGui::DragFloat3("Size",
+                glm::value_ptr(box_comp.size),
+                0.1f,
+                0.11f, FLT_MAX,
+                "%.2f",
+                ImGuiSliderFlags_AlwaysClamp);
+    }
+
+    void PlaneShapeOnImGuiRender(entt::registry& registry, entt::entity entity)
+    {
+        auto& planed_comp = registry.get<PlaneShapeComponent>(entity);
+
+        ImGui::DragFloat("Size",
+                &planed_comp.extent,
+                0.1f,
+                0.01f, FLT_MAX,
+                "%.2f",
+                ImGuiSliderFlags_AlwaysClamp);
     }
 }

editor/src/panels/content_browser.cpp

@@ -15,8 +15,9 @@ namespace OpenEngine {
     ContentBrowserPanel::ContentBrowserPanel()
         : current_directory(assets_directory)
     {
-        // TODO: Add file texture. Get free icons and add license
+        // TODO: Add license
-        folder_icon = Texture2D::Create("resources/textures/icons/folder.png");
+        folder_icon = Texture2D::Create("resources/textures/icons/folder2.png");
+        file_icon = Texture2D::Create("resources/textures/icons/file.png");
     }
 
     void ContentBrowserPanel::OnImGuiRender()
@@ -30,6 +31,16 @@ namespace OpenEngine {
                 current_directory = current_directory.parent_path();
 
         auto directory_it = std::filesystem::directory_iterator(current_directory);
+        std::vector<std::filesystem::directory_entry> entries;
+
+        for (auto entry : directory_it)
+            entries.emplace_back(entry);
+
+        std::sort(entries.begin(), entries.end(),
+                [](const std::filesystem::directory_entry& a,
+                    const std::filesystem::directory_entry& b) {
+                return (a.is_directory() && !b.is_directory());
+                });
 
         ImVec2 button_size = { 100, 100 };
         auto panel_width = ImGui::GetContentRegionAvail().x;
@@ -42,9 +53,12 @@ namespace OpenEngine {
 
         ImGui::PushStyleVar(ImGuiStyleVar_CellPadding, padding);
 
+        float margin = 20.0f;
+        ImGui::Indent(margin);
+
         if (ImGui::BeginTable("table1", table_columns, ImGuiTableFlags_SizingFixedSame))
         {
-            for (auto& entry : directory_it) {
+            for (auto& entry : entries) {
                 auto file_name = entry.path().filename().string();
 
                 ImGui::PushID(file_name.c_str());
@@ -56,17 +70,14 @@ namespace OpenEngine {
                 ImGui::PushStyleColor(ImGuiCol_ButtonActive, { 0.270f, 0.278f, 0.352f, 1.0f });
 
                 ImGui::BeginGroup();
-                ImGui::ImageButton("##X", (ImTextureID)folder_icon->GetID(), button_size, { 0, 1 }, { 1, 0 });
+                Ref<Texture2D> icon = entry.is_directory() ? folder_icon : file_icon;
+                ImGui::ImageButton("##X", (ImTextureID)icon->GetID(), button_size, { 0, 1 }, { 1, 0 });
                 if (entry.is_regular_file() && ImGui::BeginDragDropSource()) {
                     const char* source = entry.path().c_str();
                     ImGui::SetDragDropPayload("CONTENT_BROWSER_PAYLOAD", source, (strlen(source) + 1) * sizeof(char), ImGuiCond_Once);
 
                     ImGui::EndDragDropSource();
                 }
-
-                float columnWidth = ImGui::GetColumnWidth();
-                float textWidth = ImGui::CalcTextSize(file_name.c_str()).x;
-                ImGui::SetCursorPosX(ImGui::GetCursorPosX() + (columnWidth - textWidth) * 0.5f);
                 ImGui::TextWrapped("%s", file_name.c_str());
 
                 ImGui::EndGroup();
@@ -81,6 +92,7 @@ namespace OpenEngine {
             }
             ImGui::EndTable();
         }
+        ImGui::Unindent();
         ImGui::PopStyleVar();
 
         ImGui::End();

editor/src/panels/scene_hierarchy.cpp

@@ -23,6 +23,11 @@ namespace OpenEngine {
         RegisterDrawer<SpriteRendererComponent>("Sprite Renderer", &SpriteOnImGuiRender);
         RegisterDrawer<CameraComponent>("Camera", &CameraOnImGuiRender);
         RegisterDrawer<MeshComponent>("Mesh", &MeshOnImGuiRender);
+        RegisterDrawer<MaterialComponent>("Material", &MaterialOnImGuiRender);
+        RegisterDrawer<PhysicsBodyComponent>("Physics Body", &BodyOnImGuiRender);
+        RegisterDrawer<SphereShapeComponent>("Sphere Shape", &SphereShapeOnImGuiRender);
+        RegisterDrawer<BoxShapeComponent>("Box Shape", &BoxShapeOnImGuiRender);
+        RegisterDrawer<PlaneShapeComponent>("Plane Shape", &PlaneShapeOnImGuiRender);
 
         scene = context;
         selected_context = {};
@@ -51,6 +56,31 @@ namespace OpenEngine {
                 selected_context.AddComponent<MeshComponent>();
                 ImGui::CloseCurrentPopup();
             }
+        if (!selected_context.HasComponent<MaterialComponent>())
+            if (ImGui::MenuItem("Material")) {
+                selected_context.AddComponent<MaterialComponent>();
+                ImGui::CloseCurrentPopup();
+            }
+        if (!selected_context.HasComponent<PhysicsBodyComponent>())
+            if (ImGui::MenuItem("Physics body")) {
+                selected_context.AddComponent<PhysicsBodyComponent>();
+                ImGui::CloseCurrentPopup();
+            }
+        if (!selected_context.HasComponent<SphereShapeComponent>())
+            if (ImGui::MenuItem("Sphere shape")) {
+                selected_context.AddComponent<SphereShapeComponent>();
+                ImGui::CloseCurrentPopup();
+            }
+        if (!selected_context.HasComponent<BoxShapeComponent>())
+            if (ImGui::MenuItem("Box shape")) {
+                selected_context.AddComponent<BoxShapeComponent>();
+                ImGui::CloseCurrentPopup();
+            }
+        if (!selected_context.HasComponent<PlaneShapeComponent>())
+            if (ImGui::MenuItem("Plane shape")) {
+                selected_context.AddComponent<PlaneShapeComponent>();
+                ImGui::CloseCurrentPopup();
+            }
     }
 
     void EntityPopup(Ref<Scene>& scene)
@@ -195,16 +225,17 @@ namespace OpenEngine {
     void SceneHierarchy::DrawComponents(Entity& entity)
     {
         auto& reg = scene->GetRegistry();
-        entt::entity handle = selected_context;
+        entt::entity handle = entity;
 
-        if (!selected_context || !entity)
+        if (!entity)
             return;
 
         entity.GetComponents<TagComponent>();
         TagOnImGuiRender(reg, entity);
 
+        // TODO: Defer deletion like the entities?
+        std::vector<entt::id_type> pending_deletion; // 0 is null/invalid in entt usually
 
-        std::vector<entt::id_type> component_to_delete; // 0 is null/invalid in entt usually
         // Iterate through every component type entt knows about
         for (auto [id, storage] : reg.storage()) {
             if (storage.contains(handle)) {
@@ -228,20 +259,24 @@ namespace OpenEngine {
 
                     if (ImGui::BeginPopup("component_settings")) {
                         if (ImGui::MenuItem("Remove component"))
-                            component_to_delete.emplace_back(id);
+                            pending_deletion.emplace_back(id);
 
                         ImGui::EndPopup();
                     }
 
                     if (opened) {
+                        ImGui::Spacing();
                         drawers[id].draw_func(reg, handle);
+                        ImGui::Spacing();
                         ImGui::TreePop();
                     }
                 }
             }
         }
 
-        for (auto& id : component_to_delete)
+        for (auto& id : pending_deletion) {
             drawers[id].remove_func(reg, entity);
+            pending_deletion.clear();
+        }
     }
 }

imgui.ini

@@ -1,6 +1,6 @@
 [Window][WindowOverViewport_11111111]
 Pos=0,24
-Size=1272,1363
+Size=2560,1371
 Collapsed=0
 
 [Window][Debug##Default]
@@ -10,31 +10,31 @@ Collapsed=0
 
 [Window][Statistics]
 Pos=0,24
-Size=224,437
+Size=224,439
 Collapsed=0
 DockId=0x00000003,0
 
 [Window][Properties]
-Pos=822,24
+Pos=2110,24
-Size=450,805
+Size=450,810
 Collapsed=0
 DockId=0x00000007,0
 
 [Window][Viewport]
 Pos=226,61
-Size=594,956
+Size=1882,964
 Collapsed=0
 DockId=0x00000012,0
 
 [Window][Dear ImGui Demo]
-Pos=822,831
+Pos=2110,836
-Size=450,556
+Size=450,559
 Collapsed=0
 DockId=0x00000008,0
 
 [Window][Scene]
-Pos=0,463
+Pos=0,465
-Size=224,924
+Size=224,930
 Collapsed=0
 DockId=0x00000004,0
 
@@ -143,8 +143,8 @@ Collapsed=0
 DockId=0x00000012,1
 
 [Window][Assets]
-Pos=226,1019
+Pos=226,1027
-Size=594,368
+Size=1882,368
 Collapsed=0
 DockId=0x0000000C,0
 
@@ -156,12 +156,12 @@ DockId=0x0000000F,0
 
 [Window][##play_state_bar]
 Pos=226,24
-Size=594,35
+Size=1882,35
 Collapsed=0
 DockId=0x00000011,0
 
 [Docking][Data]
-DockSpace               ID=0x08BD597D Window=0x1BBC0F80 Pos=0,24 Size=1272,1363 Split=X
+DockSpace               ID=0x08BD597D Window=0x1BBC0F80 Pos=0,24 Size=2560,1371 Split=X
   DockNode              ID=0x00000005 Parent=0x08BD597D SizeRef=820,1386 Split=X
     DockNode            ID=0x00000001 Parent=0x00000005 SizeRef=224,1386 Split=Y Selected=0xE601B12F
       DockNode          ID=0x00000003 Parent=0x00000001 SizeRef=255,417 Selected=0x553E127E
@@ -173,11 +173,11 @@ DockSpace               ID=0x08BD597D Window=0x1BBC0F80 Pos=0,24 Size=1272,1363
             DockNode    ID=0x0000000F Parent=0x0000000D SizeRef=594,60 Selected=0x8325EBDA
             DockNode    ID=0x00000010 Parent=0x0000000D SizeRef=594,931 Split=Y Selected=0xC450F867
               DockNode  ID=0x00000011 Parent=0x00000010 SizeRef=594,35 HiddenTabBar=1 Selected=0xAB37695D
-              DockNode  ID=0x00000012 Parent=0x00000010 SizeRef=594,956 CentralNode=1 Selected=0xC450F867
+              DockNode  ID=0x00000012 Parent=0x00000010 SizeRef=594,964 CentralNode=1 Selected=0xC450F867
           DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=800,993 Selected=0x3EEA4247
         DockNode        ID=0x0000000C Parent=0x00000009 SizeRef=409,368 Selected=0x42C24103
       DockNode          ID=0x0000000A Parent=0x00000002 SizeRef=483,600 Selected=0x1BCA3180
   DockNode              ID=0x00000006 Parent=0x08BD597D SizeRef=450,1386 Split=Y Selected=0x8C72BEA8
-    DockNode            ID=0x00000007 Parent=0x00000006 SizeRef=444,769 Selected=0x8C72BEA8
+    DockNode            ID=0x00000007 Parent=0x00000006 SizeRef=444,805 Selected=0x8C72BEA8
-    DockNode            ID=0x00000008 Parent=0x00000006 SizeRef=444,531 Selected=0x5E5F7166
+    DockNode            ID=0x00000008 Parent=0x00000006 SizeRef=444,556 Selected=0x5E5F7166
 

open_engine/CMakeLists.txt

@@ -74,3 +74,5 @@ add_subdirectory(vendor/glad
 )
 
 add_subdirectory("vendor/nativefiledialog-extended")
+
+target_compile_options(open_engine PRIVATE -msse4.1 -msse4.2 -mavx -mavx2)

open_engine/include/open_engine/core/uuid.hpp

@@ -0,0 +1,36 @@
+#ifndef UUID_HPP
+#define UUID_HPP
+
+#include <cstdint>
+
+namespace OpenEngine {
+
+    class UUID
+    {
+        public:
+            UUID();
+            UUID(uint64_t uuid);
+            UUID(const UUID&) = default;
+
+            operator uint64_t() const { return uuid; };
+
+        private:
+            uint64_t uuid;
+    };
+
+}
+
+namespace std {
+
+    template<>
+        struct hash<OpenEngine::UUID>
+        {
+            std::size_t operator()(const OpenEngine::UUID& uuid) const
+            {
+                return hash<uint64_t>()((uint64_t)uuid);
+            }
+        };
+
+}
+
+#endif // UUID_HPP

open_engine/include/open_engine/imgui/imgui_layer.hpp

@@ -19,6 +19,7 @@ namespace OpenEngine {
             bool CloseWindow(OpenEngine::KeyPressedEvent& event);
 
             void SetBlockEvents(bool block) { block_events = block; };
+            bool GetBlockEvents() { return block_events; };
 
             void Begin();
             void End();

open_engine/include/open_engine/input/input_system.hpp

@@ -2,7 +2,6 @@
 #define INPUT_HPP
 
 #include "open_engine/input/mouse_codes.hpp"
-#include "open_engine/ref_scope.hpp"
 #include "open_engine/input/keycodes.hpp"
 
 #include <string>

open_engine/include/open_engine/physics.hpp

@@ -0,0 +1,191 @@
+#ifndef PHYSICS_HPP
+#define PHYSICS_HPP
+
+#include "logging.hpp"
+
+#include <Jolt/Jolt.h>
+#include <Jolt/Physics/Body/BodyInterface.h>
+#include <Jolt/RegisterTypes.h>
+#include <Jolt/Core/Factory.h>
+#include <Jolt/Core/TempAllocator.h>
+#include <Jolt/Core/JobSystemThreadPool.h>
+#include <Jolt/Physics/PhysicsSettings.h>
+#include <Jolt/Physics/PhysicsSystem.h>
+#include <Jolt/Physics/Collision/Shape/BoxShape.h>
+#include <Jolt/Physics/Collision/Shape/SphereShape.h>
+#include <Jolt/Physics/Body/BodyCreationSettings.h>
+#include <Jolt/Physics/Body/BodyActivationListener.h>
+
+#include <cstdarg>
+#include <glm/glm.hpp>
+
+using namespace JPH;
+using namespace JPH::literals;
+
+// Callback for traces, connect this to your own trace function if you have one
+static void TraceImpl(const char *in_fmt, ...)
+{
+    // Format the message
+    va_list list;
+    va_start(list, in_fmt);
+    char buffer[1024];
+    vsnprintf(buffer, sizeof(buffer), in_fmt, list);
+    va_end(list);
+
+    OE_CORE_TRACE("Jolt: {}", buffer);
+}
+
+#ifdef JPH_ENABLE_ASSERTS
+// Callback for asserts, connect this to your own assert handler if you have one
+static bool AssertFailedImpl(const char *in_expression, const char *in_message, const char *in_file, uint in_line)
+{
+    OE_CORE_ERROR("Jolt: Assert in file: {}:{} :({}) {}", in_file, in_line, in_expression, (in_message != nullptr? in_message : ""));
+
+    // Breakpoint
+    return true;
+};
+#endif // JPH_ENABLE_ASSERTS
+
+// Layer that objects can be in, determines which other objects it can collide with
+// Typically you at least want to have 1 layer for moving bodies and 1 layer for static bodies, but you can have more
+// layers if you want. E.g. you could have a layer for high detail collision (which is not used by the physics simulation
+// but only if you do collision testing).
+namespace Layers {
+	static constexpr ObjectLayer NON_MOVING = 0;
+	static constexpr ObjectLayer MOVING = 1;
+	static constexpr ObjectLayer NUM_LAYERS = 2;
+};
+
+class ObjectLayerPairFilterImpl : public ObjectLayerPairFilter
+{
+    public:
+        virtual bool ShouldCollide(ObjectLayer object1, ObjectLayer object2) const override;
+};
+
+// Each broadphase layer results in a separate bounding volume tree in the broad phase. You at least want to have
+// a layer for non-moving and moving objects to avoid having to update a tree full of static objects every frame.
+// You can have a 1-on-1 mapping between object layers and broadphase layers (like in this case) but if you have
+// many object layers you'll be creating many broad phase trees, which is not efficient. If you want to fine tune
+// your broadphase layers define JPH_TRACK_BROADPHASE_STATS and look at the stats reported on the TTY.
+namespace BroadPhaseLayers
+{
+	static constexpr BroadPhaseLayer NON_MOVING(0);
+	static constexpr BroadPhaseLayer MOVING(1);
+	static constexpr uint NUM_LAYERS(2);
+};
+
+inline JPH::Vec3 ToJolt(const glm::vec3& v) { return JPH::Vec3(v.x, v.y, v.z); };
+
+class BPLayerInterfaceImpl final : public BroadPhaseLayerInterface
+{
+    public:
+        BPLayerInterfaceImpl()
+        {
+            object_to_broad_phase[Layers::NON_MOVING] = BroadPhaseLayers::NON_MOVING;
+            object_to_broad_phase[Layers::MOVING] = BroadPhaseLayers::MOVING;
+        }
+
+        virtual uint GetNumBroadPhaseLayers() const override { return BroadPhaseLayers::NUM_LAYERS; };
+
+        virtual BroadPhaseLayer GetBroadPhaseLayer(ObjectLayer layer) const override
+        {
+            JPH_ASSERT(layer < Layers::NUM_LAYERS);
+            return object_to_broad_phase[layer];
+        }
+
+    private:
+        BroadPhaseLayer	object_to_broad_phase[Layers::NUM_LAYERS];
+};
+
+class ObjectVsBroadPhaseLayerFilterImpl : public ObjectVsBroadPhaseLayerFilter
+{
+    public:
+        virtual bool ShouldCollide(ObjectLayer layer1, BroadPhaseLayer layer2) const override
+        {
+            switch (layer1)
+            {
+                case Layers::NON_MOVING:
+                    return layer2 == BroadPhaseLayers::MOVING;
+                case Layers::MOVING:
+                    return true;
+                default:
+                    JPH_ASSERT(false);
+                    return false;
+            }
+        }
+};
+
+// An example contact listener
+class MyContactListener : public ContactListener
+{
+public:
+	// See: ContactListener
+	virtual ValidateResult	OnContactValidate(const Body &inBody1, const Body &inBody2, RVec3Arg inBaseOffset, const CollideShapeResult &inCollisionResult) override
+	{
+		OE_CORE_TRACE("Jolt: Contact validate callback");
+
+		// Allows you to ignore a contact before it is created (using layers to not make objects collide is cheaper!)
+		return ValidateResult::AcceptAllContactsForThisBodyPair;
+	}
+
+	virtual void			OnContactAdded(const Body &inBody1, const Body &inBody2, const ContactManifold &inManifold, ContactSettings &ioSettings) override
+	{
+		OE_CORE_TRACE("Jolt: A contact was added");
+	}
+
+	virtual void			OnContactPersisted(const Body &inBody1, const Body &inBody2, const ContactManifold &inManifold, ContactSettings &ioSettings) override
+	{
+		OE_CORE_TRACE("Jolt: A contact was persisted");
+	}
+
+	virtual void			OnContactRemoved(const SubShapeIDPair &inSubShapePair) override
+	{
+		OE_CORE_TRACE("Jolt: A contact was removed");
+	}
+};
+
+// An example activation listener
+class MyBodyActivationListener : public BodyActivationListener
+{
+public:
+	virtual void		OnBodyActivated(const BodyID &inBodyID, uint64 inBodyUserData) override
+	{
+		OE_CORE_TRACE("Jolt: A body got activated");
+	}
+
+	virtual void		OnBodyDeactivated(const BodyID &inBodyID, uint64 inBodyUserData) override
+	{
+		OE_CORE_TRACE("Jolt: A body went to sleep");
+	}
+};
+
+namespace OpenEngine {
+
+    // Consider making this static like the renderer
+    class PhysicsEngine
+    {
+        public:
+            PhysicsEngine();
+            ~PhysicsEngine();
+
+            // TODO: Temp, make abstract function to create a body
+            BodyInterface& GetBodyInterface() { return physics_system.GetBodyInterface(); };
+            void Update( float delta_time, int collision_steps);
+
+        private:
+            PhysicsSystem physics_system;
+
+            Ref<TempAllocatorImpl> tmp_allocator;
+            Ref<JobSystemThreadPool> job_system;
+
+            MyBodyActivationListener body_activation_listener;
+            MyContactListener contact_listener;
+
+            BPLayerInterfaceImpl broad_phase_layer_interface;
+            ObjectVsBroadPhaseLayerFilterImpl object_vs_broadphase_layer_filter;
+            ObjectLayerPairFilterImpl object_vs_object_layer_filter;
+
+    };
+}
+
+#endif // PHYSICS_HPP

open_engine/include/open_engine/renderer/renderer3d.hpp

@@ -10,6 +10,14 @@
 namespace OpenEngine {
 
     // SHOULD BE MOVED ==================================
+
+    enum class PrimitiveType
+    {
+        None = 0,
+        Quad,
+        Cube
+    };
+
     struct MeshVertex
     {
         glm::vec3 position;
@@ -19,6 +27,15 @@ namespace OpenEngine {
         uint32_t id = -1;
     };
 
+    struct Material
+    {
+        glm::vec4 albedo = { 1.0f, 1.0f, 1.0f, 1.0f };
+        float roughness = 1.0f;
+        float metallic = 1.0f;
+        float ambient_strength = 1.0f;
+        float specular_strength = 1.0f;
+    };
+
     struct Mesh
     {
         Ref<VertexArray> vertex_array;
@@ -46,7 +63,8 @@ namespace OpenEngine {
             static void BeginScene(const EditorCamera& camera);
             static void EndScene();
 
-            static void DrawMesh(const Ref<Mesh>& mesh, const glm::mat4& transform);
+            static void DrawMesh(const Ref<Mesh>& mesh, Material& material,
+                    const glm::mat4& transform);
     };
 }
 

open_engine/include/open_engine/renderer/uniform_buffer.hpp

@@ -8,7 +8,7 @@ namespace OpenEngine {
     class UniformBuffer
     {
         public:
-            virtual ~UniformBuffer() {}
+            virtual ~UniformBuffer() = default;
             virtual void SetData(const void* data, uint32_t size,
                     uint32_t offset = 0) = 0;
 

open_engine/include/open_engine/scene/components.hpp

@@ -1,12 +1,19 @@
 #ifndef COMPONENTS_HPP
 #define COMPONENTS_HPP
 
-#include "open_engine/scene/native_scriptable_entity.hpp"
 #include "open_engine/renderer/renderer3d.hpp"
 #include "open_engine/scene/scene_camera.hpp"
 #include "open_engine/renderer/texture.hpp"
 #include "open_engine/renderer/renderer3d.hpp"
+#include "open_engine/physics.hpp"
+#include "open_engine/core/uuid.hpp"
 
+#include <Jolt/Physics/Body/BodyCreationSettings.h>
+#include <Jolt/Physics/Body/BodyInterface.h>
+#include <Jolt/Physics/Body/MotionType.h>
+#include <Jolt/Physics/Collision/ObjectLayer.h>
+#include <Jolt/Physics/Collision/Shape/Shape.h>
+#include <Jolt/Physics/EActivation.h>
 #include <glm/ext/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
 #include <glm/fwd.hpp>
@@ -21,6 +28,15 @@
 
 namespace OpenEngine {
 
+    struct IDComponent
+    {
+        UUID id;
+
+        IDComponent() = default;
+        IDComponent(const IDComponent&) = default;
+        IDComponent(const UUID& uuid) : id(uuid) {};
+    };
+
     struct TagComponent
     {
         std::string tag;
@@ -67,6 +83,8 @@ namespace OpenEngine {
         CameraComponent(const CameraComponent&) = default;
     };
 
+    class NativeScriptableEntity;
+
     struct NativeScriptComponent 
     {
         NativeScriptableEntity* instance = nullptr;
@@ -74,9 +92,6 @@ namespace OpenEngine {
         NativeScriptableEntity* (*InstanciateScript)();
         void (*DestroyInstanceScript)(NativeScriptComponent*);
 
-        void OnImGuiRender(Entity& entity) 
-        {};
-
         template <typename T>
             void Bind()
             {
@@ -86,19 +101,63 @@ namespace OpenEngine {
                     (delete nsc->instance);
                     nsc->instance = nullptr;
                 };
-            }
+            };
     };
 
     struct MeshComponent
     {
         Ref<Mesh> mesh;
+        PrimitiveType primitive_type = PrimitiveType::None;
         
         MeshComponent() = default;
         MeshComponent(const MeshComponent&) = default;
         MeshComponent(const Ref<Mesh>& mesh)
-            : mesh(mesh) {}
+            : mesh(mesh) {};
     };
 
+    struct MaterialComponent
+    {
+        Material material;
+
+        MaterialComponent() = default;
+        MaterialComponent(const MaterialComponent&) = default;
+        MaterialComponent(const Material& material)
+            : material(material) {};
+    };
+
+    struct PhysicsBodyComponent
+    {
+        BodyID body;
+
+        float linear_damping = 0.05f;
+        float angular_damping = 0.05f;
+        float gravity_factor = 1.0f;
+        float restitution = 0.8f;
+        float friction = 0.5f;
+
+        int type = (int)EMotionType::Static;
+        int initial_activation_state = (int)EActivation::Activate;
+        int layer = (int)Layers::MOVING;
+
+        PhysicsBodyComponent() = default;
+        PhysicsBodyComponent(const PhysicsBodyComponent&) = default;
+    };
+
+    // TODO: Let's add more shapes
+    struct BoxShapeComponent
+    {
+        glm::vec3 size = { 1.0f, 1.0f, 1.0f };
+    };
+
+    struct SphereShapeComponent
+    {
+        float radius = 1.0f;
+    };
+
+    struct PlaneShapeComponent
+    {
+        float extent = 1.0f;
+    };
 }
 
 #endif // COMPONENTS_HPP

open_engine/include/open_engine/scene/entity.hpp

@@ -3,6 +3,8 @@
 
 #include "open_engine/core.hpp"
 
+#include "open_engine/core/uuid.hpp"
+#include "open_engine/scene/components.hpp"
 #include "open_engine/scene/scene.hpp"
 
 #include <cstdint>
@@ -48,6 +50,8 @@ namespace OpenEngine {
                     return scene->registry.all_of<T>(handle);
                 };
 
+            UUID GetUUID() { return GetComponents<IDComponent>().id; };
+
             operator bool() const { return handle != entt::null; };
             operator entt::entity() const { return handle; };
             operator uint32_t() const { return (uint32_t)handle; };

open_engine/include/open_engine/scene/native_scriptable_entity.hpp

@@ -1,6 +1,7 @@
 #ifndef NATIVE_SCRIPTABLE_ENTITY_HPP
 #define NATIVE_SCRIPTABLE_ENTITY_HPP
 
+#include "open_engine/scene/native_scriptable_entity.hpp"
 #include "open_engine/scene/entity.hpp"
 
 namespace OpenEngine {

open_engine/include/open_engine/scene/scene.hpp

@@ -1,8 +1,11 @@
 #ifndef SCENE_HPP
 #define SCENE_HPP
 
+#include "open_engine/core/uuid.hpp"
 #include "open_engine/renderer/editor_camera.hpp"
+#include "open_engine/physics.hpp"
 
+#include <Jolt/Physics/Body/BodyInterface.h>
 #include <entt/entity/fwd.hpp>
 #include <entt/entt.hpp>
 #include <cstdint>
@@ -16,8 +19,13 @@ namespace OpenEngine {
         public:
             Scene() = default;
             ~Scene() = default;
+            Scene(Scene& other) {};
+
+            void OnRuntimeStart();
+            void OnRuntimeStop();
 
             Entity CreateEntity(const std::string& name = std::string());
+            Entity CreateEntityWithUUID(UUID uuid, const std::string& name = std::string());
             void DeleteEntity(entt::entity entity);
             void MarkEntityForDeletion(Entity entity);
 
@@ -28,19 +36,24 @@ namespace OpenEngine {
             void OnViewportResize(uint32_t width, uint32_t height);
 
             entt::registry& GetRegistry() { return registry; };
-
+            PhysicsEngine& GetPhysicsEngine() { return physics_engine; };
             Entity GetPrimaryCamera();
 
         private:
+            void OnUpdatePhysics();
+
             template<typename T>
                 void OnComponentAdded(Entity entity, T& component);
 
         private:
             entt::registry registry;
+            PhysicsEngine physics_engine;
+
+            BodyInterface* body_interface;
 
             uint32_t viewport_width = 0, viewport_height = 0;
 
-            std::vector<entt::entity> entities_to_be_deleted;
+            std::vector<entt::entity> pending_deletion;
 
             friend class SceneSerializer;
             friend class Entity;

open_engine/src/open_engine/core/uuid.cpp

@@ -0,0 +1,24 @@
+#include <cstdint>
+#include <pch.hpp>
+
+#include <core/uuid.hpp>
+
+#include <random>
+
+namespace OpenEngine {
+
+    static std::random_device s_random_device;
+    static std::mt19937_64 s_engine(s_random_device());
+    static std::uniform_int_distribution<uint64_t> s_uniform_distribution;
+
+    UUID::UUID()
+        : uuid(s_uniform_distribution(s_engine))
+    {
+    }
+
+    UUID::UUID(uint64_t uuid)
+        : uuid(uuid)
+    {
+    }
+
+}

open_engine/src/open_engine/physics.cpp

@@ -0,0 +1,73 @@
+#include <pch.hpp>
+
+#include <ref_scope.hpp>
+#include <physics.hpp>
+
+#include <Jolt/Physics/Body/BodyInterface.h>
+#include <Jolt/Core/JobSystemThreadPool.h>
+#include <Jolt/Core/Memory.h>
+#include <Jolt/Physics/PhysicsSystem.h>
+#include <Jolt/Physics/PhysicsUpdateContext.h>
+
+bool ObjectLayerPairFilterImpl::ShouldCollide(ObjectLayer object1, ObjectLayer object2) const
+{
+    switch (object1)
+    {
+        case Layers::NON_MOVING:
+            return object2 == Layers::MOVING; // Non moving only collides with moving
+        case Layers::MOVING:
+            return true; // Moving collides with everything
+        default:
+            JPH_ASSERT(false);
+            return false;
+    }
+}
+
+namespace OpenEngine {
+
+    PhysicsEngine::PhysicsEngine()
+    {
+        RegisterDefaultAllocator();
+
+        Trace = TraceImpl;
+        JPH_IF_ENABLE_ASSERTS(AssertFailed = AssertFailedImpl);
+
+        Factory::sInstance = new Factory();
+
+        RegisterTypes();
+
+        tmp_allocator = CreateRef<TempAllocatorImpl>(10 * 1024 * 1024);
+
+        job_system = CreateRef<JobSystemThreadPool>(cMaxPhysicsJobs,
+                cMaxPhysicsBarriers,
+                thread::hardware_concurrency() - 1);
+
+        physics_system.Init(
+                1024,
+                0,
+                1024,
+                1024,
+                broad_phase_layer_interface,
+                object_vs_broadphase_layer_filter,
+                object_vs_object_layer_filter);
+
+        //physics_system.SetBodyActivationListener(&body_activation_listener);
+        //physics_system.SetContactListener(&contact_listener);
+
+        // TODO: Check the comment on Jolt's example
+        physics_system.OptimizeBroadPhase();
+    }
+
+    PhysicsEngine::~PhysicsEngine() {
+        UnregisterTypes();
+
+        // Destroy the factory
+        delete Factory::sInstance;
+        Factory::sInstance = nullptr;
+    };
+
+    void PhysicsEngine::Update(float delta_time, int collision_steps)
+    {
+        physics_system.Update(delta_time, collision_steps, &*tmp_allocator, &*job_system);
+    }
+}

open_engine/src/open_engine/renderer/renderer3d.cpp

@@ -176,6 +176,9 @@ namespace OpenEngine {
         };
         TransformData transform_buffer;
         Ref<UniformBuffer> transform_uniform_buffer;
+
+        Material material_buffer;
+        Ref<UniformBuffer> material_uniform_buffer;
     };
 
     static Renderer3DData renderer_data;
@@ -190,6 +193,7 @@ namespace OpenEngine {
         renderer_data.color_shader_3d = Shader::Create("assets/shaders/color3d.glsl");
         renderer_data.camera_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::CameraData), 0);
         renderer_data.transform_uniform_buffer = UniformBuffer::Create(sizeof(Renderer3DData::TransformData), 1);
+        renderer_data.material_uniform_buffer = UniformBuffer::Create(sizeof(Material), 2);
 
         glEnable(GL_DEBUG_OUTPUT);
         glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
@@ -201,8 +205,10 @@ namespace OpenEngine {
     
     void Renderer3D::Shutdown()
     {
-        renderer_data.camera_uniform_buffer.reset();
         renderer_data.color_shader_3d.reset();
+        renderer_data.camera_uniform_buffer.reset();
+        renderer_data.transform_uniform_buffer.reset();
+        renderer_data.material_uniform_buffer.reset();
     }
     
     void Renderer3D::BeginScene(const SceneCamera& camera, const glm::mat4& transform)
@@ -230,7 +236,8 @@ namespace OpenEngine {
 
     }
 
-    void Renderer3D::DrawMesh(const Ref<Mesh>& mesh, const glm::mat4& transform)
+    void Renderer3D::DrawMesh(const Ref<Mesh>& mesh, Material& material,
+            const glm::mat4& transform)
     {
         OE_PROFILE_FUNCTION();
 
@@ -239,6 +246,9 @@ namespace OpenEngine {
         renderer_data.transform_buffer.transform = transform;
         renderer_data.transform_uniform_buffer->SetData(&renderer_data.transform_buffer, sizeof(Renderer3DData::TransformData));
 
+        renderer_data.material_buffer = material;
+        renderer_data.material_uniform_buffer->SetData(&renderer_data.material_buffer, sizeof(Material));
+
         mesh->vertex_array->Bind();
 
         RenderCommand::DrawIndexed(mesh->vertex_array, mesh->indices.size());

open_engine/src/open_engine/scene/scene.cpp

@@ -1,18 +1,119 @@
-#include <cstdint>
+#include "logging.hpp"
-#include <entt/entity/fwd.hpp>
+#include "physics.hpp"
+#include "ref_scope.hpp"
+#include <Jolt/Physics/Body/MotionType.h>
+#include <Jolt/Physics/Collision/ObjectLayer.h>
+#include <Jolt/Physics/Collision/Shape/ConvexShape.h>
 #include <pch.hpp>
 
 #include <renderer/renderer3d.hpp>
 #include <scene/components.hpp>
+#include <open_engine/scene/native_scriptable_entity.hpp>
 #include <scene/entity.hpp>
 #include <scene/scene.hpp>
+#include <core/time.hpp>
+
+#include <Jolt/Physics/Collision/Shape/Shape.h>
+#include <Jolt/Physics/Collision/Shape/PlaneShape.h>
+#include <Jolt/Physics/Collision/Shape/BoxShape.h>
+#include <Jolt/Physics/Collision/Shape/SphereShape.h>
+#include <Jolt/Physics/EActivation.h>
+#include <Jolt/Math/Real.h>
+#include <Jolt/Math/Quat.h>
+#include <cstdint>
+#include <entt/entity/fwd.hpp>
 
 namespace OpenEngine {
 
+    static Ref<ShapeSettings> CreateShape(entt::registry& reg, entt::entity e)
+    {
+        if (reg.any_of<BoxShapeComponent>(e)) {
+            auto& c = reg.get<BoxShapeComponent>(e);
+            return CreateRef<BoxShapeSettings>(ToJolt(c.size * 0.5f));
+        }
+        if (reg.any_of<SphereShapeComponent>(e)) {
+            auto& c = reg.get<SphereShapeComponent>(e);
+            return CreateRef<SphereShapeSettings>(c.radius);
+        }
+        if (reg.any_of<PlaneShapeComponent>(e)) {
+            auto& c = reg.get<PlaneShapeComponent>(e);
+            const Plane plane({ 0.0f, 1.0f, 0.0f }, 0);
+            return CreateRef<PlaneShapeSettings>(plane, nullptr, c.extent);
+        }
+
+        OE_CORE_ERROR("Entity {} has no shape component!", reg.get<TagComponent>(e).tag);
+        return nullptr;
+    };
+
+    void Scene::OnRuntimeStart()
+    {
+        body_interface = &physics_engine.GetBodyInterface();
+        // TODO: Cleanup components aquisition
+        auto view = registry.view<TransformComponent, PhysicsBodyComponent>();
+        for (auto e : view) {
+            Entity entity = { e, this };
+            
+            auto shape_settings = CreateShape(registry, e);
+            if (!shape_settings)
+                shape_settings = CreateRef<BoxShapeSettings>(Vec3(0.5f, 0.5f, 0.5f));
+
+            auto shape_result = shape_settings->Create();
+            if (shape_result.HasError()) {
+                OE_CORE_ERROR("Shape creation failed: {}", shape_result.GetError().c_str());
+                continue;
+            }
+            ShapeRefC shape = shape_result.Get();
+
+            auto& pbc = entity.GetComponents<PhysicsBodyComponent>();
+            auto& tc = entity.GetComponents<TransformComponent>();
+            
+            glm::vec3& pos = tc.translation;
+            glm::vec3& scale = tc.scale;
+            glm::vec3& rot = tc.rotation;
+
+            Quat quat = Quat::sEulerAngles(Vec3(rot.x, rot.y, rot.z));
+            BodyCreationSettings settings(
+                    shape,
+                    //new BoxShape(Vec3(scale.x * 0.5, scale.y * 0.5f, scale.z * 0.5f)),
+                    Vec3(pos.x, pos.y, pos.z),
+                    quat,
+                    (EMotionType)pbc.type,
+                    pbc.layer);
+
+            settings.mLinearDamping = pbc.linear_damping;
+            settings.mAngularDamping = pbc.angular_damping;
+            settings.mGravityFactor = pbc.gravity_factor;
+            settings.mRestitution = pbc.restitution;
+            settings.mFriction = pbc.friction;
+            settings.mObjectLayer = (ObjectLayer)pbc.layer;
+
+            pbc.body = body_interface->CreateAndAddBody(settings, (EActivation)pbc.initial_activation_state);
+        }
+    }
+
+    void Scene::OnRuntimeStop()
+    {
+        auto view = registry.view<PhysicsBodyComponent>();
+        for (auto e : view) {
+            Entity entity = { e, this };
+
+            auto& pbc = entity.GetComponents<PhysicsBodyComponent>();
+
+            body_interface->RemoveBody(pbc.body);
+            body_interface->DestroyBody(pbc.body);
+        }
+    }
+
     Entity Scene::CreateEntity(const std::string& name)
+    {
+        return CreateEntityWithUUID(UUID(), name);
+    }
+
+    Entity Scene::CreateEntityWithUUID(UUID uuid, const std::string& name)
     {
         Entity entity = { registry.create(), this };
 
+        entity.AddComponent<IDComponent>(uuid);
         auto& tag = entity.AddComponent<TagComponent>();
         tag.tag = name.empty() ? "Entity" : name;
 
@@ -26,15 +127,31 @@ namespace OpenEngine {
 
     void Scene::MarkEntityForDeletion(Entity entity)
     {
-        entities_to_be_deleted.emplace_back(entity);
+        pending_deletion.emplace_back(entity);
     }
     
     void Scene::UpdateEntities()
     {
-        for (auto& entity : entities_to_be_deleted)
+        for (auto& entity : pending_deletion)
             DeleteEntity(entity);
 
-        entities_to_be_deleted.clear();
+        pending_deletion.clear();
+    }
+
+    void Scene::OnUpdatePhysics()
+    {
+        static int step = 0;
+        static float accumulator = 0.0f;
+        static const float fixedDT = 1.0f / 60.0f;
+
+        float real_delta_time = Time::DeltaTime(); // e.g. from a timer
+        accumulator += real_delta_time;
+
+        if (accumulator >= fixedDT) {
+            step++;
+            physics_engine.Update(fixedDT, 1);
+            accumulator -= fixedDT;
+        }
     }
 
     void Scene::OnUpdateRuntime()
@@ -54,6 +171,40 @@ namespace OpenEngine {
                     });
         }
 
+        auto view = registry.view<TransformComponent, PhysicsBodyComponent>();
+        for (auto e : view) {
+            Entity entity = { e, this };
+
+            auto& pos = entity.GetComponents<TransformComponent>().translation;
+            auto& body = entity.GetComponents<PhysicsBodyComponent>();
+
+            body_interface->SetPosition(body.body, { pos.x, pos.y, pos.z }, EActivation::Activate);
+
+            body_interface->SetRestitution(body.body, body.restitution);
+            body_interface->SetFriction(body.body, body.friction);
+        }
+
+        OnUpdatePhysics();
+
+        for (auto e : view) {
+            Entity entity = { e, this };
+
+            auto& transform = entity.GetComponents<TransformComponent>();
+            auto& body = entity.GetComponents<PhysicsBodyComponent>();
+
+            auto position = body_interface->GetPosition(body.body);
+            auto rotation = body_interface->GetRotation(body.body).GetEulerAngles();
+            transform.translation.x = position.GetX();
+            transform.translation.y = position.GetY();
+            transform.translation.z = position.GetZ();
+
+            transform.rotation.x = rotation.GetX();
+            transform.rotation.y = rotation.GetY();
+            transform.rotation.z = rotation.GetZ();
+
+            body_interface->SetGravityFactor(body.body, body.gravity_factor);
+        }
+
         SceneCamera* main_camera = nullptr;
         glm::mat4 main_transform{ 1.0f };
         {
@@ -73,10 +224,15 @@ namespace OpenEngine {
 
                 auto view = registry.view<TransformComponent, MeshComponent>();
 
-                for (const auto& entity : view) {
+                for (const auto& e : view) {
-                    auto [transform, mesh] = view.get<TransformComponent, MeshComponent>(entity);
+                    auto [transform, mesh] = view.get<TransformComponent, MeshComponent>(e);
+                    Entity entity(e, this);
 
-                    Renderer3D::DrawMesh(mesh.mesh, GetTransformFromComp(transform));
+                    Material material;
+                    if (entity.HasComponent<MaterialComponent>())
+                        material = entity.GetComponents<MaterialComponent>().material;
+
+                    Renderer3D::DrawMesh(mesh.mesh, material, GetTransformFromComp(transform));
                     /*
                     if (sprite.texture)
                         Renderer2D::DrawQuad(GetTransformFromComp(transform),
@@ -101,7 +257,14 @@ namespace OpenEngine {
         for (const auto& entity : view) {
             auto [transform, mesh] = view.get<TransformComponent, MeshComponent>(entity);
 
-            Renderer3D::DrawMesh(mesh.mesh, GetTransformFromComp(transform));
+            Material material;
+
+            Entity _entity(entity, this);
+            if (_entity.HasComponent<MaterialComponent>())
+                material = _entity.GetComponents<MaterialComponent>().material;
+
+            if (mesh.mesh)
+                Renderer3D::DrawMesh(mesh.mesh, material, GetTransformFromComp(transform));
         }
 
 		Renderer3D::EndScene();
@@ -170,4 +333,34 @@ namespace OpenEngine {
 	void Scene::OnComponentAdded<MeshComponent>(Entity entity, MeshComponent& component)
 	{
 	}
+
+	template<>
+	void Scene::OnComponentAdded<MaterialComponent>(Entity entity, MaterialComponent& component)
+	{
+	}
+
+	template<>
+	void Scene::OnComponentAdded<PhysicsBodyComponent>(Entity entity, PhysicsBodyComponent& component)
+	{
+	}
+
+	template<>
+	void Scene::OnComponentAdded<SphereShapeComponent>(Entity entity, SphereShapeComponent& component)
+	{
+	}
+
+	template<>
+	void Scene::OnComponentAdded<BoxShapeComponent>(Entity entity, BoxShapeComponent& component)
+	{
+	}
+
+    template<>
+	void Scene::OnComponentAdded<IDComponent>(Entity entity, IDComponent& component)
+	{
+	}
+
+    template<>
+	void Scene::OnComponentAdded<PlaneShapeComponent>(Entity entity, PlaneShapeComponent& component)
+	{
+	}
 }

open_engine/src/open_engine/scene/scene_serializer.cpp

@@ -1,7 +1,9 @@
+#include <cstdint>
 #include <pch.hpp>
 
 #include "core.hpp"
 #include <scene/scene_serializer.hpp>
+#include "renderer/renderer3d.hpp"
 #include "scene/components.hpp"
 #include "scene/entity.hpp"
 
@@ -86,8 +88,10 @@ namespace OpenEngine {
 
     static void SerializeEntity(YAML::Emitter& out, Entity entity)
     {
+        OE_CORE_ASSERT(entity.HasComponent<IDComponent>(), "Entity is missing UUID.");
+
         out << YAML::BeginMap;
-        out << YAML::Key << "Entity" << YAML::Value << "412741205"; // Needs random
+        out << YAML::Key << "Entity" << YAML::Value << entity.GetUUID(); // Needs random
 
         if (entity.HasComponent<TagComponent>())
         {
@@ -113,8 +117,7 @@ namespace OpenEngine {
             out << YAML::EndMap; // TransformComponent
         }
 
-        if (entity.HasComponent<CameraComponent>())
+        if (entity.HasComponent<CameraComponent>()) {
-        {
             out << YAML::Key << "CameraComponent";
             out << YAML::BeginMap; // CameraComponent
 
@@ -149,6 +152,78 @@ namespace OpenEngine {
             out << YAML::EndMap; // SpriteRendererComponent
         }
 
+        if (entity.HasComponent<MeshComponent>()) {
+            out << YAML::Key << "MeshComponent";
+            out << YAML::BeginMap; // MeshComponent
+
+            auto& mesh_component = entity.GetComponents<MeshComponent>();
+            out << YAML::Key << "MeshType" << YAML::Value << (int)mesh_component.primitive_type;
+
+            out << YAML::EndMap; // MeshComponent
+        }
+
+        if (entity.HasComponent<MaterialComponent>()) {
+            out << YAML::Key << "MaterialComponent";
+            out << YAML::BeginMap; // MaterialComponent
+
+            auto& material = entity.GetComponents<MaterialComponent>().material;
+            out << YAML::Key << "Albedo" << YAML::Value << material.albedo;
+            out << YAML::Key << "Roughness" << YAML::Value << material.roughness;
+            out << YAML::Key << "Metalic" << YAML::Value << material.metallic;
+            out << YAML::Key << "AmbiantStrength" << YAML::Value << material.ambient_strength;
+            out << YAML::Key << "SpecularStrength" << YAML::Value << material.specular_strength;
+
+            out << YAML::EndMap; // MaterialComponent
+        }
+
+        if (entity.HasComponent<PhysicsBodyComponent>()) {
+            out << YAML::Key << "PhysicsBodyComponent";
+            out << YAML::BeginMap; // PhysicsBodyComponent
+
+            auto& pbc = entity.GetComponents<PhysicsBodyComponent>();
+            out << YAML::Key << "LinearDamping" << YAML::Value << pbc.linear_damping;
+            out << YAML::Key << "AngularDamping" << YAML::Value << pbc.angular_damping;
+            out << YAML::Key << "GravityFactor" << YAML::Value << pbc.gravity_factor;
+            out << YAML::Key << "Restitution" << YAML::Value << pbc.restitution;
+            out << YAML::Key << "Friction" << YAML::Value << pbc.friction;
+
+            out << YAML::Key << "Type" << YAML::Value << pbc.type;
+            out << YAML::Key << "ActivationState" << YAML::Value << pbc.initial_activation_state;
+            out << YAML::Key << "Layer" << YAML::Value << pbc.layer;
+
+            out << YAML::EndMap; // PhysicsBodyComponent
+        }
+
+        if (entity.HasComponent<BoxShapeComponent>()) {
+            out << YAML::Key << "BoxShapeComponent";
+            out << YAML::BeginMap; //BoxShapeComponent 
+
+            auto& bsc = entity.GetComponents<BoxShapeComponent>();
+            out << YAML::Key << "Size" << YAML::Value << bsc.size;
+
+            out << YAML::EndMap; //BoxShapeComponent 
+        }
+
+        if (entity.HasComponent<SphereShapeComponent>()) {
+            out << YAML::Key << "SphereShapeComponent";
+            out << YAML::BeginMap; //SphereShapeComponent 
+
+            auto& ssc = entity.GetComponents<SphereShapeComponent>();
+            out << YAML::Key << "Radius" << YAML::Value << ssc.radius;
+
+            out << YAML::EndMap; //SphereShapeComponent 
+        }
+
+        if (entity.HasComponent<PlaneShapeComponent>()) {
+            out << YAML::Key << "PlaneShapeComponent";
+            out << YAML::BeginMap; //PlaneShapeComponent 
+
+            auto& psc = entity.GetComponents<PlaneShapeComponent>();
+            out << YAML::Key << "Extent" << YAML::Value << psc.extent;
+
+            out << YAML::EndMap; //PlaneShapeComponent 
+        }
+
         out << YAML::EndMap;
     }
 
@@ -195,7 +270,7 @@ namespace OpenEngine {
 		{
 			for (auto entity : entities)
 			{
-				uint64_t uuid = entity["Entity"].as<uint64_t>(); // TODO
+				uint64_t uuid = entity["Entity"].as<uint64_t>();
 
 				std::string name;
 				auto tagComponent = entity["TagComponent"];
@@ -204,7 +279,7 @@ namespace OpenEngine {
 
 				OE_CORE_TRACE("Deserialized entity with ID = {0}, name = {1}", uuid, name);
 
-				Entity deserializedEntity = context->CreateEntity(name);
+				Entity deserializedEntity = context->CreateEntityWithUUID(uuid, name);
 
 				auto transformComponent = entity["TransformComponent"];
 				if (transformComponent)
@@ -241,6 +316,73 @@ namespace OpenEngine {
 					auto& src = deserializedEntity.AddComponent<SpriteRendererComponent>();
 					src.color = spriteRendererComponent["Color"].as<glm::vec4>();
 				}
+
+                auto mesh_component = entity["MeshComponent"];
+                if (mesh_component)
+                {
+                    auto& mesh = deserializedEntity.AddComponent<MeshComponent>();
+                    mesh.primitive_type = (PrimitiveType)mesh_component["MeshType"].as<int>();
+                    switch (mesh.primitive_type) {
+                        case OpenEngine::PrimitiveType::Quad: {
+                                mesh.mesh = CreateQuad((uint32_t)deserializedEntity);
+                                break;
+                            }
+                        case OpenEngine::PrimitiveType::Cube: {
+                                mesh.mesh = CreateCube((uint32_t)deserializedEntity);
+                                break;
+                            }
+                        default: {
+                                OE_CORE_ASSERT(false, "No mesh");
+                                break;
+                            }
+                    }
+                }
+
+				auto material_component = entity["MaterialComponent"];
+				if (material_component) {
+					auto& material = deserializedEntity.AddComponent<MaterialComponent>();
+					material.material.albedo = material_component["Albedo"].as<glm::vec4>();
+					material.material.roughness = material_component["Roughness"].as<float>();
+					material.material.metallic = material_component["Metalic"].as<float>();
+					material.material.ambient_strength = material_component["AmbiantStrength"].as<float>();
+					material.material.specular_strength = material_component["SpecularStrength"].as<float>();
+				}
+
+                auto physics_body_component = entity["PhysicsBodyComponent"];
+                if (physics_body_component) {
+                    auto& pbc = deserializedEntity.AddComponent<PhysicsBodyComponent>();
+
+                    pbc.linear_damping = physics_body_component["LinearDamping"].as<float>();
+                    pbc.angular_damping = physics_body_component["AngularDamping"].as<float>();
+                    pbc.gravity_factor = physics_body_component["GravityFactor"].as<float>();
+                    pbc.restitution = physics_body_component["Restitution"].as<float>();
+                    pbc.friction = physics_body_component["Friction"].as<float>();
+
+                    pbc.type = physics_body_component["Type"].as<int>();
+                    pbc.initial_activation_state = physics_body_component["ActivationState"].as<int>();
+                    pbc.layer = physics_body_component["Layer"].as<int>();
+                }
+
+                auto box_shape_component = entity["BoxShapeComponent"];
+                if (box_shape_component) {
+                    auto& bsc = deserializedEntity.AddComponent<BoxShapeComponent>();
+
+                    bsc.size = box_shape_component["Size"].as<glm::vec3>();
+                }
+
+                auto sphere_shape_component = entity["SphereShapeComponent"];
+                if (sphere_shape_component) {
+                    auto& ssc = deserializedEntity.AddComponent<SphereShapeComponent>();
+
+                    ssc.radius = sphere_shape_component["Radius"].as<float>();
+                }
+
+                auto plane_shape_component = entity["PlaneShapeComponent"];
+                if (sphere_shape_component) {
+                    auto& psc = deserializedEntity.AddComponent<PlaneShapeComponent>();
+
+                    psc.extent = plane_shape_component["Extent"].as<float>();
+                }
 			}
 		}
 

untitled_persp.oes

@@ -1,47 +0,0 @@
-Scene: N/A
-Entities:
-  - Entity: 412741205
-    TagComponent:
-      Tag: square 3
-    TransformComponent:
-      Translation: [-1.49011612e-08, 0.299999774, -0.499999911]
-      Rotation: [-1.57079685, 0, 0]
-      Scale: [0.605000019, 0.60496217, 0.60496217]
-    SpriteRendererComponent:
-      Color: [1, 1, 1, 1]
-  - Entity: 412741205
-    TagComponent:
-      Tag: "square 2 "
-    TransformComponent:
-      Translation: [0, 0, -0.200000003]
-      Rotation: [0, 0, 0]
-      Scale: [0.600000024, 0.600000083, 0.600000024]
-    SpriteRendererComponent:
-      Color: [0.882352948, 0.745098054, 0.376470596, 1]
-  - Entity: 412741205
-    TagComponent:
-      Tag: square
-    TransformComponent:
-      Translation: [0.299827427, -9.68575478e-08, -0.499896437]
-      Rotation: [0, 1.57079637, 0]
-      Scale: [0.6049999, 0.604999959, 0.6049999]
-    SpriteRendererComponent:
-      Color: [0.517647088, 0.0901960805, 1, 1]
-  - Entity: 412741205
-    TagComponent:
-      Tag: camera
-    TransformComponent:
-      Translation: [0, 0, 20.8999996]
-      Rotation: [0, 0, 0]
-      Scale: [1, 1, 1]
-    CameraComponent:
-      Camera:
-        ProjectionType: 0
-        PerspectiveFOV: 45
-        PerspectiveNear: 0.00999999978
-        PerspectiveFar: 1000
-        OrthographicSize: 10
-        OrthographicNear: -1
-        OrthographicFar: 1
-      Primary: true
-      FixedAspectRatio: false