SHADE_Application/src/Application/SBApplication.cpp

@@ -33,6 +33,7 @@
 #include "Physics/System/SHPhysicsSystem.h"
 #include "Physics/System/SHPhysicsDebugDrawSystem.h"
 #include "Scripting/SHScriptEngine.h"
+#include "UI/SHUISystem.h"
 
 // Components
 #include "Graphics/MiddleEnd/Interface/SHRenderable.h"
@@ -77,6 +78,7 @@ namespace Sandbox
 
     SHSystemManager::CreateSystem<SHAudioSystem>();
     SHSystemManager::CreateSystem<SHCameraSystem>();
+    SHSystemManager::CreateSystem<SHUISystem>();
 
 
     SHSystemManager::CreateSystem<SHGraphicsSystem>();
@@ -120,6 +122,8 @@ namespace Sandbox
     SHSystemManager::RegisterRoutine<SHGraphicsSystem, SHGraphicsSystem::BeginRoutine>();
 
     //SHSystemManager::RegisterRoutine<SHCameraSystem, SHCameraSystem::EditorCameraUpdate>();
+    SHSystemManager::RegisterRoutine<SHUISystem, SHUISystem::AddUIComponentRoutine>();
+    SHSystemManager::RegisterRoutine<SHUISystem, SHUISystem::UpdateUIMatrixRoutine>();
     SHSystemManager::RegisterRoutine<SHCameraSystem, SHCameraSystem::CameraSystemUpdate>();
     
 #ifdef SHEDITOR

SHADE_Engine/src/Camera/SHCameraSystem.h

@@ -37,8 +37,6 @@ namespace SHADE
 		void Exit (void);
 
 
-		friend class EditorCameraUpdate;
-
 		class SH_API CameraSystemUpdate final: public SHSystemRoutine
 		{
 		public:

SHADE_Engine/src/UI/SHCanvasComponent.cpp

@@ -0,0 +1,60 @@
+#include "SHpch.h"
+
+#include "SHCanvasComponent.h"
+
+namespace SHADE
+{
+
+  SHCanvasComponent::SHCanvasComponent()
+    :width(1),height(1), dirtyMatrix(false), canvasMatrix()
+  {
+
+  }
+
+  void SHCanvasComponent::SetCanvasSize(CanvasSizeType width, CanvasSizeType height) noexcept
+  {
+    this->width = width;
+    this->height = height;
+  }
+
+  void SHCanvasComponent::SetCanvasWidth(CanvasSizeType val) noexcept
+  {
+    width = val;
+  }
+
+  void SHCanvasComponent::SetCanvasHeight(CanvasSizeType val) noexcept
+  {
+    height = val;
+  }
+
+
+  SHCanvasComponent::CanvasSizeType SHCanvasComponent::GetCanvasWidth() const noexcept
+  {
+    return width;
+  }
+
+  SHCanvasComponent::CanvasSizeType SHCanvasComponent::GetCanvasHeight() const noexcept
+  {
+    return height;
+  }
+
+  SHMatrix const& SHCanvasComponent::GetMatrix() const noexcept
+  {
+    return canvasMatrix;
+  }
+
+}
+
+
+RTTR_REGISTRATION
+{
+  using namespace SHADE;
+  using namespace rttr;
+
+  registration::class_<SHCanvasComponent>("Canvas Component")
+    .property("Canvas Width", &SHCanvasComponent::GetCanvasWidth, &SHCanvasComponent::SetCanvasWidth)
+    .property("Canvas Height", &SHCanvasComponent::GetCanvasHeight, &SHCanvasComponent::SetCanvasHeight)
+    ;
+
+
+}

SHADE_Engine/src/UI/SHCanvasComponent.h

@@ -1,7 +1,10 @@
 #pragma once
 
+#include <rttr/registration>
+
 #include "SH_API.h"
 #include "ECS_Base/Components/SHComponent.h"
+#include "Math/SHMatrix.h"
 
 
 namespace SHADE
@@ -13,6 +16,9 @@ namespace SHADE
 
 
   public:
+    friend class SHUISystem;
+
+
     SHCanvasComponent();
     ~SHCanvasComponent() = default;
 
@@ -20,15 +26,18 @@ namespace SHADE
     void SetCanvasWidth(CanvasSizeType width) noexcept;
     void SetCanvasHeight(CanvasSizeType height) noexcept;
 
-    CanvasSizeType const GetCanvasWidth() const noexcept;
-    CanvasSizeType const GetCanvasHeight() const noexcept;
+    CanvasSizeType GetCanvasWidth() const noexcept;
+    CanvasSizeType GetCanvasHeight() const noexcept;
+    SHMatrix const& GetMatrix() const noexcept;
 
   private:
     CanvasSizeType width;
     CanvasSizeType height;
+    bool dirtyMatrix;
+    SHMatrix canvasMatrix;
    
 
-   
+    RTTR_ENABLE()
   };
 
   

SHADE_Engine/src/UI/SHUIComponent.cpp

@@ -0,0 +1,32 @@
+#include "SHpch.h"
+#include "SHUIComponent.h"
+
+
+
+namespace SHADE
+{
+
+  SHUIComponent::SHUIComponent()
+  {
+
+  }
+
+
+  SHMatrix const& SHUIComponent::GetMatrix()const noexcept
+  {
+    return localToCanvasMatrix;
+  }
+
+}
+
+
+RTTR_REGISTRATION
+{
+  using namespace SHADE;
+  using namespace rttr;
+
+  registration::class_<SHUIComponent>("Canvas Component")
+    ;
+
+
+}

SHADE_Engine/src/UI/SHUIComponent.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <rttr/registration>
+
+#include "SH_API.h"
+#include "ECS_Base/Components/SHComponent.h"
+#include "Math/SHMatrix.h"
+
+
+namespace SHADE
+{
+  class SH_API SHUIComponent final: public SHComponent
+  {
+  public:
+    friend class SHUISystem;
+
+    SHUIComponent();
+    ~SHUIComponent() = default;
+
+    SHMatrix const& GetMatrix() const noexcept;
+
+
+  private:
+    SHMatrix localToCanvasMatrix;
+    EntityID canvasID;
+
+
+    RTTR_ENABLE()
+  };
+
+
+}

SHADE_Engine/src/UI/SHUISystem.cpp

@@ -0,0 +1,113 @@
+#include "SHpch.h"
+#include "SHUISystem.h"
+#include "ECS_Base/Managers/SHComponentManager.h"
+#include "ECS_Base/Managers/SHSystemManager.h"
+#include "Math/Transform/SHTransformComponent.h"
+
+namespace SHADE
+{
+
+  void SHUISystem::Init()
+  {
+    SystemFamily::GetID<SHUISystem>();
+    SHComponentManager::CreateComponentSparseSet<SHCanvasComponent>();
+    SHComponentManager::CreateComponentSparseSet<SHUIComponent>();
+  }
+
+  void SHUISystem::Exit()
+  {
+
+  }
+
+
+  void SHUISystem::AddUIComponentRoutine::Execute(double dt) noexcept
+  {
+    auto& dense = SHComponentManager::GetDense<SHCanvasComponent>();
+    auto& sceneGraph = SHSceneManager::GetCurrentSceneGraph();
+
+    //Go through all the canvases and make sure all the children has a UIComponent.
+    for (auto& canvas : dense)
+    {
+      auto& children = sceneGraph.GetChildren(canvas.GetEID());
+      for (auto& child : children)
+      {
+        RecurssiveUIComponentCheck(child, canvas);
+      }
+    }
+
+    //Go through all the UI Component and make sure the parent has a UI or Canvas Component
+    std::vector<EntityID> entitiesToRemove;
+    auto& UIDense = SHComponentManager::GetDense<SHUIComponent>();
+    for (auto& ui : UIDense)
+    {
+      SHSceneNode* parentNode = sceneGraph.GetParent(ui.GetEID());
+      if (parentNode == nullptr || !(SHComponentManager::HasComponent<SHUIComponent>(parentNode->GetEntityID()) || SHComponentManager::HasComponent<SHCanvasComponent>(parentNode->GetEntityID())))
+        entitiesToRemove.push_back(ui.GetEID());
+    }
+
+    for (auto& id : entitiesToRemove)
+    {
+      SHComponentManager::RemoveComponent<SHUIComponent>(id);
+    }
+
+
+  }
+
+  void SHUISystem::AddUIComponentRoutine::RecurssiveUIComponentCheck(SHSceneNode* node, SHCanvasComponent& canvas) noexcept
+  {
+    if (node == nullptr)
+      return;
+
+    EntityID eid = node->GetEntityID();
+
+    if(SHComponentManager::HasComponent<SHUIComponent>(eid) == false)
+      SHComponentManager::AddComponent<SHUIComponent>(eid);
+    else
+    {
+      SHComponentManager::GetComponent<SHUIComponent>(eid)->canvasID = canvas.GetEID();
+    }
+
+    auto& children = SHSceneManager::GetCurrentSceneGraph().GetChildren(eid);
+    for (auto& child : children)
+    {
+      RecurssiveUIComponentCheck(child, canvas);
+    }
+
+  }
+
+
+  void SHUISystem::UpdateUIMatrixRoutine::Execute(double dt) noexcept
+  {
+    SHUISystem* system = (SHUISystem* )GetSystem();
+    auto& dense = SHComponentManager::GetDense<SHUIComponent>();
+    for (auto& comp : dense)
+    {
+      system->UpdateUIComponent(comp);
+    }
+
+
+  }
+
+  void SHUISystem::UpdateUIComponent(SHUIComponent& comp) noexcept
+  {
+    auto canvasComp = SHComponentManager::GetComponent_s<SHCanvasComponent>(comp.canvasID);
+    if (SHComponentManager::HasComponent<SHTransformComponent>(comp.GetEID()))
+    {
+      auto transform = SHComponentManager::GetComponent<SHTransformComponent>(comp.GetEID());
+      if (canvasComp != nullptr)
+        comp.localToCanvasMatrix = canvasComp->GetMatrix() * transform->GetTRS();
+      else
+        comp.localToCanvasMatrix = transform->GetTRS();
+    }
+    else //If for some reason UI Components entities does not have a transform.
+    {
+      if (canvasComp != nullptr)
+        comp.localToCanvasMatrix = canvasComp->GetMatrix();
+      else
+        comp.localToCanvasMatrix = SHMatrix::Identity;
+    }
+  }
+
+
+
+}//end namespace

SHADE_Engine/src/UI/SHUISystem.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include "SH_API.h"
+#include "ECS_Base/System/SHSystem.h"
+#include "ECS_Base/System/SHSystemRoutine.h"
+#include "SHUIComponent.h"
+#include "SHCanvasComponent.h"
+#include "Scene/SHSceneGraph.h"
+#include "Scene/SHSceneManager.h"
+
+namespace SHADE
+{
+  class SH_API SHUISystem final: public SHSystem
+  {
+  public:
+
+    SHUISystem() = default;
+    ~SHUISystem() = default;
+
+    class SH_API AddUIComponentRoutine final: public SHSystemRoutine
+    {
+    public:
+      AddUIComponentRoutine() :SHSystemRoutine("Add UI Component Routine", true) {};
+      virtual void Execute(double dt) noexcept override final;
+
+    private:
+
+      void RecurssiveUIComponentCheck(SHSceneNode* node, SHCanvasComponent& canvas) noexcept;
+    };
+    friend class AddUIComponentRoutine;
+
+    class SH_API UpdateUIMatrixRoutine final: public SHSystemRoutine
+    {
+    public:
+      UpdateUIMatrixRoutine() : SHSystemRoutine("Update UI Matrix Routine", true) {};
+      virtual void Execute(double dt) noexcept override final;
+
+    };
+    friend class UpdateUIMatrixRoutine;
+
+
+    void Init();
+    void Exit();
+
+
+  private:
+    void UpdateUIComponent(SHUIComponent& comp) noexcept;
+
+
+
+
+  };
+
+
+}