264 lines
12 KiB
C#
264 lines
12 KiB
C#
using System.Collections;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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using BaseGames.Core;
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using BaseGames.Core.Assets;
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using BaseGames.Core.Events;
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namespace BaseGames.UI.MainMenu
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{
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/// <summary>
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/// 主菜单 UI 控制器（挂载在 Scene_MainMenu 的根 Canvas 上）。
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///
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/// 面板结构（按 Inspector 绑定）：
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/// ├── MainButtonsPanel — 主按钮组（新游戏 / 继续 / 设置 / 制作团队 / 退出）
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/// ├── SaveSlotPanel — 存档槽选择（新游戏 & 继续共用）
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/// ├── SettingsPanel — 设置面板
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/// └── CreditsPanel — 制作团队面板
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///
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/// 入场动画：主按钮组从下方滑入（代码驱动，无需 Animator）。
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///
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/// 流程：
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/// 玩家选择存档槽（SaveSlotController 发布 _onSlotConfirmed）
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/// → 关闭存档槽面板 → 发布 SceneLoadRequest（目标游戏场景）
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/// → GameManager 响应，进入 LoadingScene 状态，显示加载画面，最终切换到 Gameplay。
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/// </summary>
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public class MainMenuController : MonoBehaviour
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{
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// ── 面板引用 ──────────────────────────────────────────────────────────
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[Header("面板")]
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[SerializeField] private CanvasGroup _mainButtonsGroup;
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[SerializeField] private RectTransform _mainButtonsRect; // 用于滑入动画
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[SerializeField] private GameObject _saveSlotPanel;
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[Tooltip("存档槽面板控制器。打开前调用 SetMode 区分新游戏 / 继续语境。")]
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[SerializeField] private BaseGames.UI.Menus.SaveSlotController _saveSlotController;
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[SerializeField] private GameObject _settingsPanel;
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[SerializeField] private GameObject _creditsPanel;
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// ── 按钮引用 ──────────────────────────────────────────────────────────
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[Header("主菜单按钮")]
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[SerializeField] private Button _btnNewGame;
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[SerializeField] private Button _btnContinue;
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[SerializeField] private Button _btnSettings;
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[SerializeField] private Button _btnCredits;
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[SerializeField] private Button _btnQuit;
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// ── 按钮（子面板关闭）────────────────────────────────────────────────
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[Header("子面板关闭按钮（可选）")]
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[SerializeField] private Button _btnCloseSaveSlot;
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[SerializeField] private Button _btnCloseSettings;
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[SerializeField] private Button _btnCloseCredits;
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// ── 入场动画参数 ──────────────────────────────────────────────────────
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[Header("入场动画")]
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[Tooltip("按钮组初始偏移（像素，向下）")]
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[SerializeField] private float _entrySlideOffset = 80f;
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[Tooltip("入场动画持续时间（秒）")]
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[SerializeField] private float _entryDuration = 0.55f;
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// ── 游戏场景 ──────────────────────────────────────────────────────────
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[Header("场景")]
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[Tooltip("新游戏 / 继续后进入的第一个游戏场景（Addressable Key）")]
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[SerializeField] private string _firstGameSceneKey = AddressKeys.SceneGameChapter1;
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// ── Event Channels ────────────────────────────────────────────────────
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[Header("Event Channels - Listen")]
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[SerializeField] private GameStateEventChannelSO _onGameStateChanged;
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[Tooltip("SaveSlotController 完成选槽后发布（携带槽索引）")]
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[SerializeField] private IntEventChannelSO _onSlotConfirmed;
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[Header("Event Channels - Raise")]
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[SerializeField] private SceneLoadRequestEventChannelSO _onSceneLoadRequest;
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// ── 内部状态 ──────────────────────────────────────────────────────────
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private readonly CompositeDisposable _subs = new();
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private Vector2 _buttonsPanelOriginalPos;
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// ── 生命周期 ──────────────────────────────────────────────────────────
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private void Awake()
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{
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// 按钮绑定
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_btnNewGame? .onClick.AddListener(OnNewGameClicked);
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_btnContinue?.onClick.AddListener(OnContinueClicked);
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_btnSettings?.onClick.AddListener(OnSettingsClicked);
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_btnCredits? .onClick.AddListener(OnCreditsClicked);
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_btnQuit? .onClick.AddListener(Application.Quit);
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_btnCloseSaveSlot?.onClick.AddListener(() => CloseSubPanel(_saveSlotPanel, _btnNewGame));
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_btnCloseSettings?.onClick.AddListener(() => CloseSubPanel(_settingsPanel, _btnSettings));
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_btnCloseCredits? .onClick.AddListener(() => CloseSubPanel(_creditsPanel, _btnCredits));
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// 记录按钮组原始位置（供动画使用）
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if (_mainButtonsRect != null)
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_buttonsPanelOriginalPos = _mainButtonsRect.anchoredPosition;
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// 初始状态：隐藏子面板，主按钮组不可见（等待入场动画）
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SetPanel(_saveSlotPanel, false);
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SetPanel(_settingsPanel, false);
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SetPanel(_creditsPanel, false);
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SetButtonsGroupVisible(false);
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// 刷新"继续"按钮可用性（需要至少一个有效存档）
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RefreshContinueButton();
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}
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private void OnEnable()
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{
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_onGameStateChanged?.Subscribe(HandleGameStateChanged).AddTo(_subs);
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_onSlotConfirmed? .Subscribe(HandleSlotConfirmed).AddTo(_subs);
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}
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private void OnDisable() => _subs.Clear();
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private void Start()
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{
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// 场景初始化完成后播放入场动画
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StartCoroutine(PlayEntryAnimation());
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}
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// ── 入场动画 ─────────────────────────────────────────────────────────
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private IEnumerator PlayEntryAnimation()
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{
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if (_mainButtonsGroup == null) yield break;
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Vector2 startPos = _buttonsPanelOriginalPos - new Vector2(0f, _entrySlideOffset);
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if (_mainButtonsRect != null)
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_mainButtonsRect.anchoredPosition = startPos;
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float elapsed = 0f;
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while (elapsed < _entryDuration)
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{
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float t = Mathf.SmoothStep(0f, 1f, elapsed / _entryDuration);
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_mainButtonsGroup.alpha = t;
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if (_mainButtonsRect != null)
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_mainButtonsRect.anchoredPosition = Vector2.Lerp(startPos, _buttonsPanelOriginalPos, t);
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elapsed += Time.unscaledDeltaTime;
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yield return null;
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}
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_mainButtonsGroup.alpha = 1f;
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if (_mainButtonsRect != null)
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_mainButtonsRect.anchoredPosition = _buttonsPanelOriginalPos;
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_mainButtonsGroup.interactable = true;
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_mainButtonsGroup.blocksRaycasts = true;
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// 手柄导航：入场动画完成后将焦点置于第一个按钮
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EventSystem.current?.SetSelectedGameObject(_btnNewGame?.gameObject);
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}
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// ── 按钮回调 ─────────────────────────────────────────────────────────
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private void OnNewGameClicked()
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{
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_saveSlotController?.SetMode(BaseGames.UI.Menus.SaveSlotPanelMode.NewGame);
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OpenSubPanel(_saveSlotPanel);
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}
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private void OnContinueClicked()
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{
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_saveSlotController?.SetMode(BaseGames.UI.Menus.SaveSlotPanelMode.Continue);
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OpenSubPanel(_saveSlotPanel);
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}
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private void OnSettingsClicked() => OpenSubPanel(_settingsPanel); // SettingsPanelController 自行设焦点
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private void OnCreditsClicked()
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{
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OpenSubPanel(_creditsPanel);
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// Credits 面板无独立控制器，打开时把焦点交给返回按钮（键盘 / 手柄可直接退出）
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if (_btnCloseCredits != null)
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EventSystem.current?.SetSelectedGameObject(_btnCloseCredits.gameObject);
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}
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/// <summary>打开子面板：禁用主按钮组交互，避免键盘/手柄导航"穿透"到背后的主菜单按钮。</summary>
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private void OpenSubPanel(GameObject panel)
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{
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SetMainButtonsInteractable(false);
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SetPanel(panel, true);
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}
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/// <summary>关闭子面板：恢复主按钮组交互，并把焦点恢复到对应主菜单按钮（导航连续性）。</summary>
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private void CloseSubPanel(GameObject panel, Button focusAfter)
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{
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SetPanel(panel, false);
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SetMainButtonsInteractable(true);
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if (focusAfter != null)
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EventSystem.current?.SetSelectedGameObject(focusAfter.gameObject);
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}
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private void SetMainButtonsInteractable(bool on)
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{
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if (_mainButtonsGroup == null) return;
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_mainButtonsGroup.interactable = on;
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_mainButtonsGroup.blocksRaycasts = on;
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}
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// ── 存档槽确认 ───────────────────────────────────────────────────────
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private void HandleSlotConfirmed(int _)
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{
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SetPanel(_saveSlotPanel, false);
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// 继续游戏：存档已记录检查点场景时加载该场景并落在存档点出生位；
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// 否则（新游戏 / 存档尚无检查点）加载首关。
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var svc = ServiceLocator.GetOrDefault<ISaveService>();
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string checkpointScene = svc?.LastCheckpointScene;
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bool hasCheckpoint = !string.IsNullOrEmpty(checkpointScene);
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_onSceneLoadRequest?.Raise(new SceneLoadRequest
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{
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SceneName = hasCheckpoint ? checkpointScene : _firstGameSceneKey,
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EntryTransitionId = hasCheckpoint ? svc.LastCheckpointSpawnId : null,
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TransitionType = TransitionType.Scene,
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ShowLoadingScreen = true,
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});
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}
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// ── 游戏状态响应 ─────────────────────────────────────────────────────
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private void HandleGameStateChanged(GameStateId state)
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{
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bool isMainMenu = state == GameStates.MainMenu;
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// 离开 MainMenu（加载游戏中）时锁定所有交互，防止重复点击
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if (_mainButtonsGroup != null)
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{
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_mainButtonsGroup.interactable = isMainMenu;
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_mainButtonsGroup.blocksRaycasts = isMainMenu;
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}
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}
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// ── 工具方法 ─────────────────────────────────────────────────────────
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private void RefreshContinueButton()
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{
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if (_btnContinue == null) return;
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var saveService = ServiceLocator.GetOrDefault<ISaveService>();
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bool hasAny = saveService != null
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&& (saveService.HasSave(0) || saveService.HasSave(1) || saveService.HasSave(2));
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_btnContinue.interactable = hasAny;
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}
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private static void SetPanel(GameObject panel, bool active)
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{
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if (panel != null) panel.SetActive(active);
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}
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private void SetButtonsGroupVisible(bool visible)
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{
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if (_mainButtonsGroup == null) return;
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_mainButtonsGroup.alpha = visible ? 1f : 0f;
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_mainButtonsGroup.interactable = visible;
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_mainButtonsGroup.blocksRaycasts = visible;
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}
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}
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}
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