using UnityEngine;

namespace BlockOutReplica.Presentation
{
    public sealed class BlockFxParticle : MonoBehaviour
    {
        private Vector3 velocity;
        private Vector3 angularVelocity;
        private float lifetime;
        private float age;
        private float gravity;
        private Vector3 startScale;

        public void Initialize(Vector3 initialVelocity, float duration, float gravityAmount)
        {
            velocity = initialVelocity;
            lifetime = Mathf.Max(.05f, duration);
            gravity = gravityAmount;
            angularVelocity = Random.insideUnitSphere * 320f;
            startScale = transform.localScale;
        }

        private void Update()
        {
            age += Time.deltaTime;
            float t = Mathf.Clamp01(age / lifetime);
            velocity += Vector3.down * gravity * Time.deltaTime;
            transform.position += velocity * Time.deltaTime;
            transform.Rotate(angularVelocity * Time.deltaTime, Space.Self);
            float scale = Mathf.Sin(Mathf.Clamp01(t * 1.35f) * Mathf.PI) * (1f - t * .35f);
            transform.localScale = startScale * Mathf.Max(0f, scale);
            if (age >= lifetime) Destroy(gameObject);
        }
    }
}