using System.Collections;
using System.Threading;
using UnityEngine;

namespace Animations
{
    public class ThreadTween : MonoBehaviour
    {
        private void Start()
        {
            StartCoroutine(StartThread());
        }

        private IEnumerator StartThread()
        {
            yield return new WaitForSeconds(2.0f);
            
            // CAUTION: you can't access Unity Objects, e.g. Transforms, from another thread
            // than the main thread
            
            // CAUTION: never put the main thread to sleep, e.g. Thread.Sleep() or Thread.Join()
            
            Vector3 position = transform.position;
            Vector3 forward = transform.forward;
            Vector3 localScale = transform.localScale;
            
            Thread thread = new Thread(() =>
            {
                float time = 0.0f;

                while (time < 1.0f)
                {
                    position = Vector3.Lerp(Vector3.zero, forward * 5.0f, time);
                    localScale = Vector3.Lerp(Vector3.one, Vector3.one * 2.0f, time);
                    Thread.Sleep(16);
                    // time += Time.deltaTime; // Time is not available in a thread
                    time += 0.016f;
                }
            });
            thread.Start();
            
            thread.Join();
            
            transform.position = position;
            transform.localScale = localScale;
        }
    }
}