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

public class TranslateFloatingText : MonoBehaviour
{
    private TextMeshProUGUI thisText;

    private float lifeTime = 1.5f;
    private float startTime;

    private Vector3 startingPosition;
    private RectTransform thisTransform;

    private const float speed = 100.0f;
    private float angle;

    private Vector2 randomPosition;

    Color yellowColor = Color.yellow;
    Color redColor = Color.red;
    Color noAlpha;

    private void Awake()
    {
        thisTransform = GetComponent<RectTransform>();
        startingPosition = thisTransform.localPosition;
        thisText = GetComponent<TextMeshProUGUI>();
    }

    private void OnEnable()
    {
        startTime = Time.time;
        thisTransform.localPosition = startingPosition;

        if(ScoreManager.Instance.isAddingPoints)
        {
            thisText.color = yellowColor;
            noAlpha = new Color(1.0f, 1.0f, 0, 0); //yellow
            angle = Random.Range(250, 350);
        }
        else
        {
            thisText.color = redColor;
            noAlpha = new Color(1.0f, 0, 0, 0); //red
            angle = Random.Range(150, 280);
        }

        angle *= Mathf.Deg2Rad;
        randomPosition = new Vector2(Mathf.Sin(angle), Mathf.Cos(angle));
    }


    void Update()
    {
        if (Time.time - startTime < lifeTime)
        {
            Color colourToUse = ScoreManager.Instance.isAddingPoints ? yellowColor : redColor;
            thisText.color = Color.Lerp(colourToUse, noAlpha, (Time.time - startTime) / lifeTime);
            if (thisText.color.a <= 0.05f)
            {
                thisText.color = noAlpha;
            }

            transform.Translate(randomPosition * speed * Time.deltaTime);
        }
    }
}