using System.Collections;
using TMPro;
using UnityEngine;
using Random = System.Random;

namespace UI.WorldUI
{
    public class DamageNumber : MonoBehaviour
    {
        [SerializeField]
        TextMeshProUGUI textMesh;
        [SerializeField]
        private float speed;
        [SerializeField]
        private float moveSpeed=10f;
    
        private Camera mainCamera;
    
        // Start is called once before the first execution of Update after the MonoBehaviour is created
        void Start()
        {
            Random rnd = new Random();
            speed += rnd.Next(-10, 10)/100f;
            mainCamera = Camera.main;

            StartCoroutine(Animate());
        }

        IEnumerator Animate()
        {
            textMesh.color = new Color(textMesh.color.r, textMesh.color.g, textMesh.color.b, 1);
            Billboard();
            
            yield return new WaitForSeconds(0.2f);
            while (textMesh.color.a > 0)
            {
                float newAlpha = textMesh.color.a - Time.deltaTime * speed / 255f; // Reduce alpha in the float range
                newAlpha = Mathf.Clamp01(newAlpha); // Ensure it remains between 0 and 1
                textMesh.color = new Color(textMesh.color.r, textMesh.color.g, textMesh.color.b, newAlpha); // Assign the new alpha value
                this.transform.position = new Vector3(transform.position.x, transform.position.y+moveSpeed*Time.deltaTime, transform.position.z);
                
                Billboard();
                
                yield return null;
            }
            Destroy(this.gameObject);
        }

        void Billboard()
        {
            transform.LookAt(transform.position + mainCamera.transform.rotation * Vector3.forward, mainCamera.transform.rotation * Vector3.up);
        }
    }
}