using UnityEngine;

public class TouchViewer : MonoSingleton<TouchViewer>
{
    [SerializeField]
    private GameObject[] touchEffectPool;

    public Camera UICamera { get; set; }

    private void Awake()
    {
        if (!IsNull() && Instance != this)
        {
            Destroy(this);
            return;
        }
        DontDestroyOnLoad(this);
    }

    void FixedUpdate()
    {
        if (UICamera is null) return;

#if UNITY_EDITOR || UNITY_STANDALONE_WIN
        if(Input.GetMouseButtonDown(0))
#else
        if(Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began)
#endif
        {
            Vector3 canvasPosition = UICamera.ScreenToWorldPoint(Input.mousePosition);
            canvasPosition.z = 0;

            PlayTouchEffect(canvasPosition);
        }
    }

    private void PlayTouchEffect(Vector3 startPos)
    {
        for (int i = 0; i < touchEffectPool.Length; i++)
        {
            if (!touchEffectPool[i].activeSelf)
            {
                touchEffectPool[i].transform.position = startPos;
                touchEffectPool[i].SetActive(true);
                return;
            }
        }
    }
}