I’m having a little trouble with my arrow script. It’s supposed to:
- follow an arc
- stop when it hits a target
- apply its force to that target
Of which it sort of does all three, but the latter two not really consistently.
I’ve attached images of its misbehaviour - notably, that at high speeds it often passes through other colliders before stopping. I’ve tried playing around with FixedUpdate and similar but surely this is a common problem if it’s that it’s moving too fast?
The script that powers it is below:
public class ArrowBehaviour : MonoBehaviour
{
private Rigidbody2D body;
private Collider2D arrowCollider;
[SerializeField] private float massOffset;
[SerializeField] int destroyTimeSet;
private bool _followArc;
private bool _firstFrame;
private int destroyTimer;
private void Awake()
{
body = GetComponent<Rigidbody2D>();
arrowCollider = GetComponent<Collider2D>();
}
private void Start()
{
body.centerOfMass = new Vector2(massOffset, body.position.y);
_firstFrame = true;
_followArc = true;
Destroy(this.gameObject, 10.0f); // destroy in 4 seconds
destroyTimer = 0; // for off-screen countdown
}
private void FixedUpdate()
{
if (_followArc && !_firstFrame)
{
// follow an arc
float angle = Mathf.Atan2(body.velocity.y, body.velocity.x) * Mathf.Rad2Deg;
transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
}
_firstFrame = false;
if (transform.position.y < -5.25f)
{
// Destroy(gameObject);
}
// If arrow is out of sight for destroyTimeSet frames, destroy it
if (!GetComponent<Renderer>().isVisible)
{
destroyTimer = destroyTimer + 1;
if (destroyTimer == destroyTimeSet)
{
Destroy(gameObject);
}
else
{
destroyTimer = 0;
}
}
}
public void OnCollisionEnter2D(Collision2D collision)
{
_followArc = false; // switches off arcing when it hits something
body.velocity = Vector3.zero;
body.angularVelocity = 0;
body.isKinematic = true;
transform.parent = collision.transform; // Makes the arrow a child of the object it hits
arrowCollider.enabled = !arrowCollider.enabled; // Disable colliders
}
}
I mostly followed a tutorial on this, so I don’t know where the issue has arisen.
