[add]: State manager

1 files changed, 56 insertions, 0 deletions

diff --git a/src/States/SimulationState.h b/src/States/SimulationState.h
new file mode 100644
index 0000000..d2f0106
--- /dev/null
+++ b/src/States/SimulationState.h
@@ -0,0 +1,56 @@
+#pragma once
+
+#include "Core/State.h"
+#include "Core/Event.h"
+#include "Core/Camera.h"
+#include "Core/Log.h"
+
+#include "Rendering/VertexArray.h"
+#include "Rendering/VertexBuffer.h"
+#include "Rendering/IndexBuffer.h"
+#include "Rendering/Shader.h"
+#include "Rendering/Texture.h"
+
+namespace Donut
+{
+    class SimulationState
+        : public State
+    {
+    public:
+        ~SimulationState() = default;
+        
+        void OnEnter()                 override;
+        void OnExit()                  override;
+        void OnUpdate(float deltaTime) override;
+        void OnRender()                override;
+        void OnEvent(Event& event)     override;
+    private:
+        void HandleKeyInput(float deltaTime);
+        void UpdateTexture();
+    private:
+        std::unique_ptr<Camera> m_Camera;
+        
+        std::shared_ptr<VertexArray>  m_VertexArray;
+        std::shared_ptr<VertexBuffer> m_VertexBuffer;
+        std::shared_ptr<IndexBuffer>  m_IndexBuffer;
+        std::shared_ptr<Shader>       m_Shader;
+        std::shared_ptr<Texture2D>    m_Texture;
+        
+        std::shared_ptr<Shader>    m_ComputeShader;
+        std::shared_ptr<Texture2D> m_ProcessedTexture;
+        
+        float m_ComputeBrightness = 0.0f;
+        float m_ComputeContrast   = 1.0f;
+        float m_ComputeSaturation = 1.0f;
+        bool  m_UseComputeShader  = true;
+        
+        bool  m_Keys[1024]    = { false };
+        bool  m_FirstMouse    = true;
+        float m_LastX         = 0.0f;
+        float m_LastY         = 0.0f;
+        float m_DeltaTime     = 0.0f;
+        float m_LastFrame     = 0.0f;
+        bool  m_MouseDragging = false;
+        float m_TextureTime   = 0.0f;
+    };
+};