2026-04-27 대화 선택지 시스템

Assets/02_Scripts/UI/ChoiceHud.cs

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+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+
+namespace VRShopping.UI
+{
+    // 화자 몸통 앞에 떠 있는 World-space 선택지 UI 싱글턴
+    // DialogPlayer가 Show()를 await해서 선택된 인덱스를 받아감
+    public class ChoiceHud : MonoBehaviour
+    {
+        public static ChoiceHud Instance { get; private set; }
+
+        [Header("Refs")]
+        [SerializeField] private GameObject _root;
+        [SerializeField] private Transform _rowContainer;
+        [SerializeField] private DialogChoiceRow _rowPrefab;
+        [SerializeField] private TMP_Text ChoiceQuestion;
+
+        [Header("Placement")]
+        [SerializeField] private float _chestHeight = 1.2f;    // 화자 발 기준 가슴 높이
+        [SerializeField] private float _forwardOffset = 0.5f;  // 화자→플레이어 방향으로 띄울 거리
+
+        private Transform _speakerTransform;
+        private readonly List<DialogChoiceRow> _rows = new();
+        private AwaitableCompletionSource<int> _completion;
+
+        private void Awake()
+        {
+            if (Instance != null && Instance != this) { Destroy(gameObject); return; }
+            Instance = this;
+            if (_root == null) _root = gameObject;
+            Hide();
+        }
+
+        private void OnDestroy()
+        {
+            if (Instance == this) Instance = null;
+        }
+
+        private void OnDisable()
+        {
+            // 진행 중 대기 정리 (씬 전환 등으로 비활성화될 때)
+            _completion?.TrySetCanceled();
+            _completion = null;
+        }
+
+        public async Awaitable<int> Show(CharacterData speaker,string choiceQuestion, List<DialogChoice> choices)
+        {
+            if (choices == null || choices.Count == 0) return 0;
+
+            _speakerTransform = speaker != null ? CharacterVoiceObject.Find(speaker)?.transform : null;
+
+            ChoiceQuestion.text = choiceQuestion;
+            ClearRows();
+            for (int i = 0; i < choices.Count; i++)
+            {
+                var row = Instantiate(_rowPrefab, _rowContainer);
+                row.Bind(i, choices[i].ChoiceText);
+                row.OnClicked += HandleClicked;
+                _rows.Add(row);
+            }
+
+            _root.SetActive(true);
+            _completion = new AwaitableCompletionSource<int>();
+
+            int result;
+            try
+            {
+                result = await _completion.Awaitable;
+            }
+            finally
+            {
+                _completion = null;
+                Hide();
+            }
+            return result;
+        }
+
+        private void HandleClicked(int index)
+        {
+            _completion?.TrySetResult(index);
+        }
+
+        private void Hide()
+        {
+            ChoiceQuestion.text = "";
+            ClearRows();
+            if (_root != null) _root.SetActive(false);
+            _speakerTransform = null;
+        }
+
+        private void ClearRows()
+        {
+            foreach (var row in _rows)
+            {
+                if (row == null) continue;
+                row.OnClicked -= HandleClicked;
+                Destroy(row.gameObject);
+            }
+            _rows.Clear();
+        }
+
+        private void LateUpdate()
+        {
+            if (_root == null || !_root.activeSelf) return;
+            if (_speakerTransform == null || Camera.main == null) return;
+
+            var camTr = Camera.main.transform;
+
+            // 화자에서 플레이어 카메라로 향하는 수평 방향 (yaw만)
+            Vector3 toCam = camTr.position - _speakerTransform.position;
+            toCam.y = 0f;
+            if (toCam.sqrMagnitude < 0.0001f) return;
+            Vector3 dir = toCam.normalized;
+
+            Vector3 chestWorld = _speakerTransform.position + Vector3.up * _chestHeight;
+            _root.transform.position = chestWorld + dir * _forwardOffset;
+
+            // 빌보드 — 캔버스의 -Z(읽는 면)가 카메라를 향하도록 +Z를 카메라 반대로
+            _root.transform.rotation = Quaternion.LookRotation(-dir);
+        }
+    }
+}

Assets/02_Scripts/UI/ChoiceHud.cs.meta

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+fileFormatVersion: 2
+guid: 81f70ce051c83414a8ea1e501a3001e0

Assets/02_Scripts/UI/DialogChoiceRow.cs

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+using System;
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace VRShopping.UI
+{
+    public class DialogChoiceRow : MonoBehaviour
+    {
+        [SerializeField] private TMP_Text _text;
+        [SerializeField] private Button _button;
+
+        public event Action<int> OnClicked;
+
+        private int _index;
+
+        private void Awake()
+        {
+            if (_button != null)
+                _button.onClick.AddListener(() => OnClicked?.Invoke(_index));
+        }
+
+        public void Bind(int index, string text)
+        {
+            _index = index;
+            if (_text != null) _text.text = text;
+        }
+    }
+}

Assets/02_Scripts/UI/DialogChoiceRow.cs.meta

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+fileFormatVersion: 2
+guid: 7a8265dea4c74384c92089a937f1ff9d