How to make you character look at and follow the mouse. With only at few lines of code you can give extra life to your 2D game.

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The Eye script:

/*

   .-------.                             .--.    .-------.     .--.            .--.     .--.        
   |       |--.--.--------.-----.-----.--|  |    |_     _|--.--|  |_.-----.----|__|---.-|  |-----.
   |   -   |_   _|        |  _  |     |  _  |      |   | |  |  |   _|  _  |   _|  |  _  |  |__ --|
   |_______|__.__|__|__|__|_____|__|__|_____|      |___| |_____|____|_____|__| |__|___._|__|_____|
   © 2019 OXMOND / www.oxmond.com 

*/

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

public class Eye : MonoBehaviour
{

    void Update()
    {
        Vector3 targetDir = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
        float angle = (Mathf.Atan2(targetDir.y, targetDir.x) * Mathf.Rad2Deg) - 90f;
        transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
    }
}