Added basic movement

Assets/Scripts/Player/CameraController.cs

@@ -0,0 +1,69 @@
+using UnityEngine;
+
+// Stops errors from happening by making sure there is a Camera in the same group of components
+[RequireComponent(typeof(Camera))]
+
+// Controller from the Player Camera, NOT FOR PORTAL CAMERAS
+public class CameraController : MonoBehaviour
+{
+    [Header("Settings")]
+    [SerializeField] Vector2 m_Sensitivity;
+    [SerializeField] float m_MaxAngle;
+
+    [Header("References")]
+    [SerializeField] Transform m_Orientation;
+
+    // Private variables //
+
+    // Current angle the player is looking at
+    Vector2 m_Rotation;
+
+    // The instance of the camera
+    static CameraController s_Instance = null;
+
+    // Provides a way for external objects to interact with the camera
+    public CameraController Instance() => s_Instance;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        // Checks it is the only instance
+        if (s_Instance == null)
+        {
+            // Sets itself as the instance
+            s_Instance = this;
+        }
+
+        // Else throws an error in the console
+        else
+        {
+            Debug.LogError("Multiple instances of CameraController within Scene");
+        }
+
+        // Locks the cursor and makes it invisible
+        Cursor.lockState = CursorLockMode.Locked;
+        Cursor.visible = false;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        // Gets the mouse input from the user
+        Vector2 mouse = new Vector2
+        (
+            Input.GetAxisRaw("Mouse X") * Time.deltaTime * m_Sensitivity.x,
+            Input.GetAxisRaw("Mouse Y") * Time.deltaTime * m_Sensitivity.y
+        );
+
+        // Applies the mouse movement to the camera angle
+        m_Rotation.x -= mouse.y; // Yes these lines look cursed but blame Unity not me
+        m_Rotation.y += mouse.x;
+
+        // Clamps the angle to stop the camera from looping around
+        m_Rotation.x = Mathf.Clamp(m_Rotation.x, -m_MaxAngle, m_MaxAngle);
+
+        // Applies the rotation to the objects within Unity
+        m_Orientation.rotation = Quaternion.Euler(0, m_Rotation.y, 0);
+        transform.rotation = Quaternion.Euler(m_Rotation.x, m_Rotation.y, 0);
+    }
+}