restructure v2

engine/Backend/Camera.h

@@ -0,0 +1,51 @@
+
+#pragma once
+
+#include "Shader.h"
+
+#include <glad/glad.h>
+#include <glm/glm.hpp>
+
+// Movement keys/buttons
+enum Camera_Movement {
+    FORWARD,
+    BACKWARD,
+    LEFT,
+    RIGHT,
+    SPRINT
+};
+
+// Default camera values
+const float YAW         = -90.0f;
+const float PITCH       =  0.0f;
+const float SPEED       =  5.5f;
+const float SENSITIVITY =  0.1f;
+const float ZOOM        =  45.0f;
+
+class Camera
+{
+public:
+    glm::vec3 position, front, up, right, worldUp;
+    float yaw, pitch;
+    float movementSpeed, mouseSensitivity, zoom;
+    bool sprinting = false;
+
+    // constructor with vectors
+    Camera(glm::vec3 newPosition = glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), float newYaw = YAW, float newPitch = PITCH);    // constructor with scalar values
+    Camera(float posX, float posY, float posZ, float upX, float upY, float upZ, float newYaw, float newPitch);
+    // returns the view matrix calculated using Euler Angles and the LookAt Matrix
+    glm::mat4 GetViewMatrix();
+    // processes input received from any keyboard-like input system. Accepts input parameter in the form of camera defined ENUM (to abstract it from windowing systems)
+    void processKeyboard(Camera_Movement direction, float deltaTime);
+    // processes input received from a mouse input system. Expects the offset value in both the x and y direction.
+    void processMouseMovement(float xoffset, float yoffset, GLboolean constrainPitch = true);
+
+    // processes input received from a mouse scroll-wheel event. Only requires input on the vertical wheel-axis
+    void processMouseScroll(float yoffset);
+    void Update(Shader shader, int screenWidth, int screenHeight);
+
+private:
+    // calculates the front vector from the Camera's (updated) Euler Angles
+    void updateCameraVectors();
+};
+