Version: 2017.2


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public static bool anyKeyDown ;


При быстром многократном нажатии клавиши клавиатуры или кнопки мыши возвращает true только в первом кадре. (Read Only)

You should be polling this variable from the Update function, since the state gets reset each frame. It will not return true until the user has released all keys / buttons and pressed any key / buttons again.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Update() { if (Input.anyKeyDown) Debug.Log("A key or mouse click has been detected"); } }