use raycast unity new input system
With this code somewhere in your scene:
using UnityEngine.InputSystem;
using UnityEngine;
public class MouseClicks : MonoBehaviour
{
[SerializeField]
private Camera gameCamera;
private InputAction click;
void Awake()
{
click = new InputAction(binding: "<Mouse>/leftButton");
click.performed += ctx => {
RaycastHit hit;
Vector3 coor = Mouse.current.position.ReadValue();
if (Physics.Raycast(gameCamera.ScreenPointToRay(coor), out hit))
{
hit.collider.GetComponent<IClickable>()?.OnClick();
}
};
click.Enable();
}
}
You can add an IClickable Interface to all GameObjects that want to respond to clicks:
public interface IClickable
{
void OnClick();
}
and
using UnityEngine;
public class ClickableObject : MonoBehaviour, IClickable
{
public void OnClick()
{
Debug.Log("somebody clicked me");
}
}