How to create a game object on the stage in the coordinates of the cursor position?

Question

Unity

Hello. Using Instantiate I create an instance of an object (Circle) on the stage (By clicking the left mouse button), I assign the coordinates to Input.mousePosition. The object appears miles away from where I clicked. Project 2d.

using UnityEngine;

public class SnotCreater : MonoBehaviour
{
    public GameObject Circle;
    public GameObject CirclePrefab;

    void Start()
    {

    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {

            Circle = Instantiate(CirclePrefab, Input.mousePosition, Quaternion.Euler(0,0,0)) as GameObject;
        }
}
}

Answer 1

The mouse position is in the screen coordinate system, and you create the prefab in the world coordinate system.
To convert the mouse position to the world coordinate system, use the
Camera.main.ScreenToWorldPoint() method.

using UnityEngine;

public class SnotCreater : MonoBehaviour
{
    public GameObject Circle;
    public GameObject CirclePrefab;

    void Start()
    {

    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            var mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            Circle = Instantiate(CirclePrefab, mousePos, Quaternion.Euler(0,0,0)) as GameObject;
        }
}
}