这是一个像弹弓一样的愤怒的小鸟，我需要检测触摸的开始和结束，脚本有效但是当我将手指从屏幕上抬起时出现的错误大约是第 24 行（我在它旁边放了点）。只有当我不触摸屏幕时才会出现错误，如果我触摸它就会消失，当我抬起手指时它会回来。
public class BallShooting : MonoBehaviour
{
public Rigidbody2D rb;
private bool isPressed = false;
public bool isDead = false;
public bool hasShoot = false;
public int Damage;
public int BaseDamage = 1;
public BoxCollider2D DeathZone;
public Transform startingSpot;
public GameObject platform;
public float releaseTime = .15f;
void FixedUpdate()
{
if (Input.touchCount >= 0 && isDead == false)
{
... if (Input.GetTouch(0).phase == TouchPhase.Began)
{
// Debug.Log("TouchBegan");
isPressed = true;
rb.isKinematic = true;
}
if (Input.GetTouch(0).phase == TouchPhase.Ended)
{
// Debug.Log("TouchEnded");
isPressed = false;
rb.isKinematic = false;
StartCoroutine(Release());
}
}
if(isPressed && !hasShoot)
{
Touch touch = Input.GetTouch(0);
Vector3 touchPosition = Camera.main.ScreenToWorldPoint(touch.position);
rb.position = touchPosition;
}
if (isDead)
{
this.transform.position = new Vector3(startingSpot.position.x, startingSpot.position.y, startingSpot.position.z);
isDead = false;
DeathZone.enabled = true;
}
}
void OnTriggerEnter2D(Collider2D other)
{
if(other.tag == "Ground" && hasShoot == true)
{
isDead = true;
Debug.Log("Dead");
DeathZone.enabled = false;
}
}
IEnumerator Release()
{
yield return new WaitForSeconds(releaseTime);
GetComponent<SpringJoint2D>().enabled = false;
hasShoot = true;
}
}