Input.GetTouch

Description

Возвращает объект, отражающий состояние заданного касания (touch). (Не выделяет память под временные переменные, т.е. в куче лишние объекты не создаются).

GetTouch returns a Touch struct. As an example the Touch returned with the pressure.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public float speed = 0.1F;
    void Update()
    {
        if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved)
        {
            // Get movement of the finger since last frame
            Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;

            // Move object across XY plane
            transform.Translate(-touchDeltaPosition.x * speed, -touchDeltaPosition.y * speed, 0);
        }
    }
}

Другой пример:

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public GameObject projectile;
    public GameObject clone;
    void Update()
    {
        for (int i = 0; i < Input.touchCount; ++i)
        {
            if (Input.GetTouch(i).phase == TouchPhase.Began)
                clone = Instantiate(projectile, transform.position, transform.rotation) as GameObject;
        }
    }
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public GameObject particle;
    void Update()
    {
        for (int i = 0; i < Input.touchCount; ++i)
        {
            if (Input.GetTouch(i).phase == TouchPhase.Began)
            {
                // Construct a ray from the current touch coordinates
                Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);
                // Create a particle if hit
                if (Physics.Raycast(ray))
                    Instantiate(particle, transform.position, transform.rotation);
            }
        }
    }
}