Implemented simple computer camera controls.

PuzzleGameProject/Assets/Scripts/PlayerController.cs

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+using UnityEngine;
+using UnityEngine.EventSystems;
+
+public class PlayerController : MonoBehaviour
+{
+    private Vector3 _lastMousePosition;
+    private Camera _camera;
+    private bool _canMove;
+
+    private void Start() {
+        _camera = Camera.main;
+    }
+
+    private void Update() {
+        CheckMovementInput();
+    }
+
+    private void CheckMovementInput() {
+        if (Input.GetMouseButtonDown(0))
+        {
+            _lastMousePosition = Input.mousePosition;
+            _canMove = !IsMouseOverUI();
+        }
+        
+        if (!Input.GetMouseButton(0) || !_canMove) return;
+
+        Vector3 mouseWorldPoint = _camera.ScreenToWorldPoint(Input.mousePosition);
+        Vector3 lastWorldPoint = _camera.ScreenToWorldPoint(_lastMousePosition);
+
+        Vector3 delta = mouseWorldPoint - lastWorldPoint;
+
+        _lastMousePosition = Input.mousePosition;
+
+        _camera.transform.position -= delta;
+    }
+
+    private bool IsMouseOverUI() {
+        return EventSystem.current.IsPointerOverGameObject();
+    }
+}
+

PuzzleGameProject/Assets/Scripts/PlayerController.cs.meta

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+fileFormatVersion: 2
+guid: 01621b291be214dc6bf7ab90a7cb0d79