private void Start()
{
Vector3 position = transform.position;
_closestCenter = GenericFunctions.GetClosestCircle(position);
_closestEnemy = GenericFunctions.FindClosestEnemy(position);
_rb = GetComponent <Rigidbody2D>();
}
// Update is called once per frame
private void FixedUpdate()
{
Vector3 position = transform.position;
// Find closest enemy, if no enemy is currently stored in _closestEnemy
if (_closestEnemy == null)
{
// ReSharper disable once Unity.PerformanceCriticalCodeInvocation
_closestEnemy = GenericFunctions.FindClosestEnemy(transform.position);
// If _closestEnemy is still null, it means nothing new was found
if (_closestEnemy == null)
{
Destroy(gameObject);
return;
}
}
_cooldownTimer -= Time.deltaTime;
if (_cooldownTimer <= 0)
{
// Rotate missile towards closest enemy
Vector3 target = _closestEnemy.transform.position;
float angle = Mathf.Atan2(target.y - position.y, target.x - position.x) * 180 / Mathf.PI;
Vector3 rotation = new Vector3(0, 0, angle);
transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(rotation), Time.deltaTime * 10f);
}
// Move forward
Vector3 impulse = new Vector3(movementForce, 0, 0);
_rb.AddRelativeForce(impulse, ForceMode2D.Impulse);
// Self destruct after n seconds
_selfDestructTimer -= Time.deltaTime;
// Also self-destruct if hits the edge of the bubble
if (_selfDestructTimer <= 0 || Vector3.Distance(_closestCenter, position) > 12f)
{
Destroy(gameObject);
}
}