private void OnTriggerEnter2D(Collider2D collision)
{
if (birdStateEnum == BirdStateEnum.flyToSeed && collision.tag == targetTag)
{
colliderObject = collision.GetComponent <ColliderObject>();
if (colliderObject == null)
{
Debug.LogError("collider does not exist on " + collision.gameObject);
return;
}
colliderObject.RemoveCollider();
colliderObject.transform.rotation = Quaternion.identity;
colliderObject.transform.position = transform.Find("beak").position;
colliderObject.transform.parent = transform;
birdStateEnum = BirdStateEnum.flyToNest;
//hide nest cover
nestCover.SetActive(false);
flyStartPosition = transform.position;
target = nestStop.position;
direction = (target - flyStartPosition).normalized;
speed /= 2f;
}
}
void DropSeed()
{
colliderObject.RecoverCollider();
colliderObject.transform.parent = null;
colliderObject.rb.velocity = new Vector3(0, -1, 0);
birdStateEnum = BirdStateEnum.flyAway;
nestCover.SetActive(true);
}
void StartFly()
{
birdStateEnum = BirdStateEnum.flyToSeed;
flyStartPosition = transform.position;
target = targetObject.transform.position;
direction = (target - flyStartPosition).normalized;
}
// Update is called once per frame
void Update()
{
if (GameManager.Instance.IsGameEnd)
{
return;
}
switch (birdStateEnum)
{
case BirdStateEnum.wait:
if (targetObject.transform.position.y < transform.position.y - birdFlyTriggerHeight)
{
Invoke("StartFly", isForLeaf?0: delay);
}
break;
case BirdStateEnum.flyToSeed:
if (isForLeaf)
{
target = targetObject.transform.position;
direction = (target - transform.position).normalized;
}
rb.MovePosition(transform.position + direction * speed * Time.deltaTime);
break;
case BirdStateEnum.flyToNest:
rb.MovePosition(transform.position + direction * speed * Time.deltaTime);
Vector3 vectorCur = transform.position - flyStartPosition;
Vector3 vectorTarget = target - flyStartPosition;
float lengthCur = Vector3.Dot(vectorCur, direction);
if (lengthCur * lengthCur >= vectorTarget.sqrMagnitude)
{
birdStateEnum = BirdStateEnum.pauseOnNest;
Invoke("DropSeed", 0.5f);
}
break;
case BirdStateEnum.pauseOnNest:
break;
case BirdStateEnum.flyAway:
rb.MovePosition(transform.position + direction * speed * Time.deltaTime);
break;
}
}
// Start is called before the first frame update
void Start()
{
rb = GetComponent <Rigidbody2D>();
birdStateEnum = BirdStateEnum.wait;
delay = Random.Range(delayMin, delayMax);
nestCover = transform.parent.Find("nest_cover").gameObject;
if (isForLeaf)
{
targetObject = GameObject.Find("leaf");
targetTag = "leaf";
}
else
{
targetObject = GameObject.Find("seed");
targetTag = "seed";
}
}
