using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;

public class ExpTextController : MonoBehaviour {
    private TextMeshPro text;

    [SerializeField] public float holdTime = 0.3f;
    [SerializeField] public float fadeTime = 0.2f;

    [SerializeField] public float upwardForce = 2.0f;

    [SerializeField] public float horizontalForce = 0.5f;

    [SerializeField] public Rigidbody2D body;

    private void Awake() {
        text = transform.GetComponent<TextMeshPro>();
        body = GetComponent<Rigidbody2D>();
    }

    public void Setup(int amount) {
        text.SetText("+" + amount.ToString());
    }

    // Start is called before the first frame update
    private void Start() {
        body.AddForce(new Vector2(Random.Range(-0.5f, 0.5f) * horizontalForce,
                                  Random.Range(0f, 1f) * upwardForce));
        Invoke("StartFadeOut", holdTime);
    }

    public void StartFadeOut() {
        StartCoroutine("FadeOut");
    }

    IEnumerator FadeOut() {
        for (float i = fadeTime; i >= 0; i -= Time.deltaTime) {
            text.alpha = i / fadeTime;
            yield return null;
        }
        Destroy(gameObject);
    }
}