comment corriger sur l'entrée.GetMouseButTondown (0) Talage comme UI

using UnityEngine.EventSystems;

void Update()
{
	if (Input.GetMouseButtonDown(0))
    {
         // This line prevents the Code from activating UI
    	 if (EventSystem.current.IsPointerOverGameObject())
                return;
         // Put your code here       
    }
}
Bonus