foo.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Tilemaps;

public class CameraMover : MonoBehaviour
{
    public Tilemap map;
    public Grid grid;
    public int cameraMarin = 50;
    public int cameraSpeed = 200;
    public int cameraZoomLimit = 200;

    public bool supportEdgeScrolling = true;
    public bool supportKeyScrolling = true;
    public bool supportMouseDragScrolling = true;


    public Vector2 cameraMovement = Vector2.zero;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        var screenSize = Screen.currentResolution;
        var mousePosition = Input.mousePosition;
        var mousePositionScreen = Camera.main.ScreenToViewportPoint(mousePosition);
        if (supportEdgeScrolling)
        {
            if (screenSize.width - mousePosition.x <= cameraMarin)
                cameraMovement.x += cameraSpeed * Time.deltaTime;
            if (mousePosition.x <= cameraMarin)
                cameraMovement.x -= cameraSpeed * Time.deltaTime;
            if (screenSize.height - mousePosition.y <= cameraMarin)
                cameraMovement.y += cameraSpeed * Time.deltaTime;
            if (mousePosition.y <= cameraMarin)
                cameraMovement.y -= cameraSpeed * Time.deltaTime;
        }

        if (supportKeyScrolling)
        {
            if (Input.GetKeyDown(KeyCode.LeftArrow))
            {
                cameraMovement.x -= cameraSpeed * Time.deltaTime;
            }
            if (Input.GetKeyDown(KeyCode.UpArrow))
            {
                cameraMovement.y -= cameraSpeed * Time.deltaTime;
            }
        }

        gameObject.transform.position += (Vector3)cameraMovement;

        cameraMovement = Vector2.zero;

        if (Input.GetMouseButton(0))
        {
            var mouseWorldPosition = Camera.main.ScreenToWorldPoint(mousePosition);
            var tt = grid.WorldToCell(mousePosition);
            Debug.Log(tt);
            map.SetTile(Vector3Int.zero, null);

        }
    }

    void FixedUpdate()
    {
       
    }
}