[add]: Camera

1 files changed, 69 insertions, 0 deletions

diff --git a/src/Core/Camera.h b/src/Core/Camera.h
new file mode 100644
index 0000000..b2037b7
--- /dev/null
+++ b/src/Core/Camera.h
@@ -0,0 +1,69 @@
+#pragma once
+
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+
+namespace Donut
+{
+    class Camera
+    {
+    public:
+        Camera(float fov = 45.0f, float aspectRatio = 16.0f / 9.0f, 
+               float nearPlane = 0.1f, float farPlane = 100.0f);
+        ~Camera() = default;
+
+        void SetPosition(const glm::vec3& position) { m_Position = position; RecalculateViewMatrix(); }
+        void SetRotation(const glm::vec3& rotation) { m_Rotation = rotation; RecalculateViewMatrix(); }
+        
+        const glm::vec3& GetPosition() const { return m_Position; }
+        const glm::vec3& GetRotation() const { return m_Rotation; }
+        
+        glm::vec3 GetForwardDirection() const;
+        glm::vec3 GetRightDirection()   const;
+        glm::vec3 GetUpDirection()      const;
+
+        const glm::mat4& GetProjectionMatrix()     const { return m_ProjectionMatrix; }
+        const glm::mat4& GetViewMatrix()           const { return m_ViewMatrix; }
+        const glm::mat4& GetViewProjectionMatrix() const { return m_ViewProjectionMatrix; }
+
+        void SetProjection(float fov, float aspectRatio, float nearPlane, float farPlane);
+        
+        void OnUpdate(float deltaTime);
+        void OnMouseMove(float xOffset, float yOffset, bool constrainPitch = true);
+        
+        void MoveForward(float deltaTime);
+        void MoveBackward(float deltaTime);
+        void MoveRight(float deltaTime);
+        void MoveLeft(float deltaTime);
+        void MoveUp(float deltaTime);
+        void MoveDown(float deltaTime);
+
+        void SetMouseSensitivity(float sensitivity) { m_MouseSensitivity = sensitivity; }
+        float GetMouseSensitivity() const { return m_MouseSensitivity; }
+
+        void SetMovementSpeed(float speed) { m_MovementSpeed = speed; }
+        float GetMovementSpeed() const { return m_MovementSpeed; }
+
+    private:
+        void RecalculateViewMatrix();
+        void RecalculateProjectionMatrix();
+    private:
+        glm::mat4 m_ProjectionMatrix;
+        glm::mat4 m_ViewMatrix;
+        glm::mat4 m_ViewProjectionMatrix;
+
+        glm::vec3 m_Position = { 0.0f, 0.0f, 3.0f };
+        glm::vec3 m_Rotation = { 0.0f, 0.0f, 0.0f };
+
+        float m_FOV = 45.0f;
+        float m_AspectRatio = 16.0f / 9.0f;
+        float m_NearPlane = 0.1f;
+        float m_FarPlane = 100.0f;
+
+        float m_MouseSensitivity = 0.1f;
+        float m_MovementSpeed = 5.0f;
+        bool m_FirstMouse = true;
+        float m_LastX = 0.0f;
+        float m_LastY = 0.0f;
+    };
+}