How to make a character enter the trigger, the player presses a button on the keyboard and this character becomes a child object of another object?

Question

C++ / C#

It is necessary that the Persian, when he enters the cube, which is a trigger, the player presses a button on the keyboard and the Persian takes control of the ship.

Answer 1

https://docs.unity3d.com/ScriptReference/Collider.... - when the object is in the trigger
https://docs.unity3d.com/ScriptReference/Transform... - we assign the parent
The code will look something like this if I understood you correctly:

//imaginary variables
    public Transform previousParent;
    public GameObject ship;
    public GameObject player;

    bool isNearWheel;
    private void Update()
    {
        if (Input.GetKey(KeyCode.F) && isNearWheel)
        player.transform.SetParent(ship.transform);
        
    }
    private void OnTriggerStay(Collider other)
    {
        if (other.tag == "wheel")
        isNearWheel = true;
        else isNearWheel = false;
    }

Of course, the code is not finalized and I have not tested it, but I hope it will help you