BABA_YAGA/Assets/Scripts/AI NPC/ChatBubble.cs

using UnityEngine;
using TMPro;
using PrimeTween;

namespace Hallucinate.UI
{
    public class ChatBubble : MonoBehaviour
    {
        [SerializeField] private TextMeshProUGUI textDisplay;
        [SerializeField] private CanvasGroup canvasGroup;
        [SerializeField] private RectTransform bubbleRect;

        private Transform mainCameraTransform;

        private void Awake()
        {
            if (canvasGroup != null) canvasGroup.alpha = 0;
            // gameObject.SetActive(false); // Bỏ dòng này để tránh tắt nhầm NPC gốc
        }

        private void LateUpdate()
        {
            // Tìm Camera nếu chưa có (Tránh lỗi Null nếu Camera chưa spawn hoặc bị xóa)
            if (mainCameraTransform == null)
            {
                if (Camera.main != null) mainCameraTransform = Camera.main.transform;
                else return;
            }

            // Billboard effect
            transform.LookAt(transform.position + mainCameraTransform.rotation * Vector3.forward, mainCameraTransform.rotation * Vector3.up);
        }

        public void Show(string text, float duration = 4f)
        {
            gameObject.SetActive(true);
            textDisplay.text = text;
            
            // Animation using PrimeTween
            PrimeTween.Sequence.Create()
                .Group(Tween.Alpha(canvasGroup, 1f, 0.3f))
                .Group(Tween.Scale(bubbleRect, Vector3.zero, Vector3.one, 0.4f, Ease.OutBack))
                .Chain(Tween.Delay(duration))
                .Chain(Tween.Alpha(canvasGroup, 0f, 0.5f))
                .OnComplete(() => gameObject.SetActive(false));
        }
    }
}