SceneHierarchyPanel

- Added Panel
- Added SceneHierarchyPanel

Engine/src/Engine/Scene/Entity.h

@@ -29,6 +29,8 @@ namespace Light {
 		{
 			return m_Scene->m_Registry.get<T>(m_Handle);
 		}
+
+		operator uint32_t() { return (uint32_t)m_Handle; }
 	};
 
 }

Engine/src/Engine/Scene/Scene.h

@@ -15,6 +15,7 @@ namespace Light {
 	class Scene
 	{
 		friend class Entity;
+		friend class SceneHierarchyPanel;
 	private:
 		entt::registry m_Registry;
 

Mirror/src/MirrorLayer.h

@@ -1,5 +1,7 @@
 #include <LightEngine.h>
 
+#include "Panels/SceneHierarchyPanel.h"
+
 #include <glm/gtc/matrix_transform.hpp>
 
 namespace Light {
@@ -14,7 +16,9 @@ namespace Light {
 
 		Ref<Framebuffer> m_Framebuffer;
 
-		Scene m_Scene;
+		Ref<Scene> m_Scene;
+		SceneHierarchyPanel m_SceneHierarchyPanel;
+
 		Entity m_CameraEntity;
 		Entity m_NativeScriptEntity;
 
@@ -26,21 +30,28 @@ namespace Light {
 			m_AwesomefaceTexture = ResourceManager::GetTexture("awesomeface");
 
 			m_Framebuffer = std::shared_ptr<Framebuffer>(Framebuffer::Create({ 800u, 600u, 1u }, GraphicsContext::GetSharedContext()));
-
-			m_CameraEntity = m_Scene.CreateEntity("camera", glm::mat4(1.0f));
-			m_CameraEntity.AddComponent<CameraComponent>(SceneCamera(), true);
+			
+			m_Scene = CreateRef<Scene>();
 
 			for (int i = 0; i < 250; i++)
 			{
 				glm::vec3 position = glm::vec3(rand() % 3000 - 1400.0f, rand() % 3000 - 1400.0f, 0.0f);
 				glm::vec2 size = glm::vec2(250.0f, 250.0f);
 
-				m_Scene.CreateEntity("quad", glm::translate(glm::mat4(1.0f), { position.x, position.y, 0.0f }) *
-				                             glm::scale(glm::mat4(1.0f), { size.x, size.y, 1.0f})).AddComponent<SpriteRendererComponent>(m_AwesomefaceTexture);
+				Entity quad = m_Scene->CreateEntity("quad", glm::translate(glm::mat4(1.0f), { position.x, position.y, 0.0f }) *
+				                                            glm::scale(glm::mat4(1.0f), { size.x, size.y, 1.0f}));
+				quad.AddComponent<SpriteRendererComponent>(m_AwesomefaceTexture);
+				quad.AddComponent<TagComponent>("quad");
+
 			}
 
-			m_NativeScriptEntity = m_Scene.CreateEntity("nsc", glm::translate(glm::mat4(1.0f), glm::vec3(0.0f)) * glm::scale(glm::mat4(1.0f), glm::vec3(250.0f, 250.0f, 1.0f)));
+			m_CameraEntity = m_Scene->CreateEntity("camera", glm::mat4(1.0f));
+			m_CameraEntity.AddComponent<CameraComponent>(SceneCamera(), true);
+			m_CameraEntity.AddComponent<TagComponent>("Camera");
+
+			m_NativeScriptEntity = m_Scene->CreateEntity("nsc", glm::translate(glm::mat4(1.0f), glm::vec3(0.0f)) * glm::scale(glm::mat4(1.0f), glm::vec3(250.0f, 250.0f, 1.0f)));
 			m_NativeScriptEntity.AddComponent<SpriteRendererComponent>(m_AwesomefaceTexture);
+			m_NativeScriptEntity.AddComponent<TagComponent>("NativeScript");
 
 			class SampleNativeScript : public Light::NativeScript
 			{
@@ -54,7 +65,8 @@ namespace Light {
 
 
 			// create native scripts
-			m_Scene.OnCreate();
+			m_Scene->OnCreate();
+			m_SceneHierarchyPanel.SetContext(m_Scene);
 		}
 
 		void OnUpdate(float deltaTime) override
@@ -76,12 +88,12 @@ namespace Light {
 			auto& transform = m_CameraEntity.GetComponent<TransformComponent>();
 			transform = glm::translate(transform.transform, glm::vec3(m_Direction * m_Speed * deltaTime, 0.0));
 
-			m_Scene.OnUpdate(deltaTime);
+			m_Scene->OnUpdate(deltaTime);
 		}
 
 		void OnRender() override
 		{
-			m_Scene.OnRender(m_Framebuffer);
+			m_Scene->OnRender(m_Framebuffer);
 		}
 
 		void OnUserInterfaceUpdate()
@@ -111,6 +123,8 @@ namespace Light {
 			}
 
 			ImGui::End();
+
+			m_SceneHierarchyPanel.OnUserInterfaceUpdate();
 		}
 
 	};

Mirror/src/Panels/Panel.h

@@ -0,0 +1,12 @@
+#pragma once
+
+namespace Light {
+
+	class Panel
+	{
+	public:
+		Panel() = default;
+		virtual ~Panel() = default;
+	};
+
+}

Mirror/src/Panels/SceneHierarchyPanel.cpp

@@ -0,0 +1,53 @@
+#include "SceneHierarchyPanel.h"
+
+#include "Scene/Components.h"
+
+#include <entt.hpp>
+
+#include <imgui.h>
+
+namespace Light {
+
+	SceneHierarchyPanel::SceneHierarchyPanel(Ref<Scene> context)
+		: m_Context(context)
+	{
+	}
+
+	void SceneHierarchyPanel::SetContext(Ref<Scene> context)
+	{
+		m_Context = context;
+	}
+
+	void SceneHierarchyPanel::OnUserInterfaceUpdate()
+	{
+		ImGui::Begin("Hierarchy");
+
+		m_Context->m_Registry.
+		each([&](auto& entityID)
+		{
+			Entity entity(entityID, m_Context.get());
+			const std::string& tag = entity.GetComponent<TagComponent>();
+
+			DrawNode(entity, tag);
+		});
+
+		ImGui::End();
+	}
+
+	void SceneHierarchyPanel::DrawNode(Entity entity, const std::string& label)
+	{
+		ImGuiTreeNodeFlags flags = (m_SelectionContext == entity ? ImGuiTreeNodeFlags_Selected : NULL) | ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_SpanFullWidth;
+
+		bool expanded = ImGui::TreeNodeEx((void*)(uint64_t)(uint32_t)(entity), flags, label.c_str());
+
+		if (ImGui::IsItemClicked())
+			m_SelectionContext = entity;
+
+		if(expanded)
+		{
+			ImGui::Text("TEST_OPENED_TREE!");
+			ImGui::TreePop();
+		}
+	}
+
+}

Mirror/src/Panels/SceneHierarchyPanel.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "Panel.h"
+
+#include "Base/Base.h"
+
+#include "Scene/Entity.h"
+#include "Scene/Scene.h"
+
+namespace Light {
+
+	class SceneHierarchyPanel : public Panel
+	{
+	private:
+		Ref<Scene> m_Context;
+		Entity m_SelectionContext;
+
+	public:
+		SceneHierarchyPanel() = default;
+		SceneHierarchyPanel(Ref<Scene> context);
+
+		void SetContext(Ref<Scene> context);
+
+		void OnUserInterfaceUpdate();
+
+	private:
+		void DrawNode(Entity entity, const std::string& label);
+	};
+
+}