SpeedModule.cs

using System;
using System.Reflection;
using BepInEx.Configuration;
using HarmonyLib;
using UnityEngine;

namespace HTFToolkit
{
    /// <summary>
    /// 移动速度倍率：反射改写 PlayerMovement 的基础速度字段
    /// （_walkSpeed / _sprintSpeed / _crouchSpeed —— 游戏的过渡系统 _curMoveSpeed 由它们插值而来）。
    /// 任意倍数（小数支持），关闭时恢复原值。仅改本地玩家。
    /// </summary>
    internal static class SpeedModule
    {
        public static bool Enabled;

        /// <summary>最近一次请求的倍率（热键开关复用此值）。</summary>
        public static float LastRequested => _currentMult;

        private static FieldInfo _walkF;
        private static FieldInfo _sprintF;
        private static FieldInfo _crouchF;
        private static FieldInfo _jumpF;
        private static bool _captured;
        private static float _origWalk, _origSprint, _origCrouch, _origJump;
        private static float _currentMult = 1f;

        public static void BindConfig(ConfigFile cfg)
        {
        }

        public static void SetMultiplier(float mult)
        {
            try
            {
                if (mult <= 0f)
                {
                    ToastModule.Show("移速倍率需大于 0", Color.yellow);
                    return;
                }
                Player p = Player.LocalPlayer;
                PlayerMovement mv = p != null ? p.Movement : null;
                if (mv == null)
                {
                    ToastModule.Show("移速: 玩家未初始化", Color.yellow);
                    return;
                }

                EnsureFields();
                if (_walkF == null || _sprintF == null)
                {
                    ToastModule.Show("移速: 游戏字段缺失", Color.yellow);
                    return;
                }

                // 首次记录原值（以当前倍率=1 时的状态为准；若已设过倍率则先还原再记录基准）
                if (!_captured)
                {
                    _origWalk = (float)_walkF.GetValue(mv);
                    _origSprint = (float)_sprintF.GetValue(mv);
                    if (_crouchF != null)
                        _origCrouch = (float)_crouchF.GetValue(mv);
                    if (_jumpF != null)
                        _origJump = (float)_jumpF.GetValue(mv);
                    _captured = true;
                }

                _walkF.SetValue(mv, _origWalk * mult);
                _sprintF.SetValue(mv, _origSprint * mult);
                if (_crouchF != null)
                    _crouchF.SetValue(mv, _origCrouch * mult);
                // 垂直：跳跃/水里上浮的初速也随倍率（跳更高/游更快上浮）
                if (_jumpF != null)
                    _jumpF.SetValue(mv, _origJump * mult);

                _currentMult = mult;
                Enabled = true;
                ToastModule.Show($"移动速度 ×{mult:0.##}（含跳跃/上浮高度）", Color.white);
            }
            catch (Exception e)
            {
                Plugin.Log?.LogWarning($"speed set failed: {e.Message}");
                ToastModule.Show("移速: 设置失败", Color.yellow);
            }
        }

        public static void Reset()
        {
            try
            {
                if (_captured)
                {
                    Player p = Player.LocalPlayer;
                    PlayerMovement mv = p != null ? p.Movement : null;
                    if (mv != null)
                    {
                        EnsureFields();
                        _walkF?.SetValue(mv, _origWalk);
                        _sprintF?.SetValue(mv, _origSprint);
                        _crouchF?.SetValue(mv, _origCrouch);
                        _jumpF?.SetValue(mv, _origJump);
                    }
                }
                _currentMult = 1f;
                Enabled = false;
                ToastModule.Show("移动速度已恢复 ×1", Color.white);
            }
            catch (Exception e)
            {
                Plugin.Log?.LogWarning($"speed reset failed: {e.Message}");
            }
        }

        private static void EnsureFields()
        {
            if (_walkF == null)
                _walkF = AccessTools.Field(typeof(PlayerMovement), "_walkSpeed");
            if (_sprintF == null)
                _sprintF = AccessTools.Field(typeof(PlayerMovement), "_sprintSpeed");
            if (_crouchF == null)
                _crouchF = AccessTools.Field(typeof(PlayerMovement), "_crouchSpeed");
            if (_jumpF == null)
                _jumpF = AccessTools.Field(typeof(PlayerMovement), "_jumpForce");
        }

        // ---------------- 菜单 UI（工具页内嵌编辑器）----------------

        private static string _inputMult = "2";
        private static GUIStyle _fieldStyle;
        private static GUIStyle _hintStyle;

        /// <summary>工具页内嵌：倍率输入框 + 应用/恢复按钮 + 当前状态。</summary>
        public static void DrawEditor()
        {
            if (Event.current == null)
                return;

            if (_fieldStyle == null)
            {
                _fieldStyle = new GUIStyle(GUI.skin.textField)
                {
                    fontSize = UIScale.TextFont,
                    alignment = TextAnchor.MiddleLeft
                };
                _hintStyle = new GUIStyle(GUI.skin.label)
                {
                    normal = { textColor = new Color(0.75f, 0.75f, 0.75f) }
                };
            }
            _fieldStyle.fontSize = UIScale.TextFont;
            _hintStyle.fontSize = UIScale.HintFont;

            GUILayout.BeginHorizontal();
            _inputMult = GUILayout.TextField(_inputMult, _fieldStyle, GUILayout.Width(UIScale.W * 0.16f), GUILayout.Height(UIScale.ButtonH));
            if (GUILayout.Button("设为该倍率", UIScale.ButtonStyle, GUILayout.Height(UIScale.ButtonH), GUILayout.Width(UIScale.W * 0.22f)))
            {
                if (float.TryParse((_inputMult ?? "").Trim(), out float v) && v > 0f)
                    SetMultiplier(v);
                else
                    ToastModule.Show("倍率无效（需大于 0 的数字）", Color.yellow);
            }
            if (GUILayout.Button("恢复 ×1", UIScale.ButtonStyle, GUILayout.Height(UIScale.ButtonH), GUILayout.Width(UIScale.W * 0.18f)))
                Reset();
            GUILayout.EndHorizontal();

            GUILayout.Label($"当前移速倍率: ×{_currentMult:0.##}（水平移动 + 跳跃/上浮高度同步生效）", _hintStyle);
        }
    }
}