HealthBarsModule.cs

using System.Collections.Generic;
using BepInEx.Configuration;
using UnityEngine;

namespace HTFToolkit
{
    /// <summary>
    /// 生物头顶血条：遍历 ItemManager.Items 里的活体 Creature，
    /// 把 Hp/MaxHp 画到屏幕上（WorldToScreenPoint）。
    /// v1.8.6：血量读 Compat.CreatureHp（SyncVar 本体）——客户端进朋友房间时
    /// Creature.Hp 属性可能永远停在 0（spawn 快照时序错开），导致血条全部不显示。
    /// </summary>
    internal static class HealthBarsModule
    {
        public static bool Enabled;

        private static int _diag;
        private static bool _diagLogged;

        private static ConfigEntry<float> _maxDistance;
        private static ConfigEntry<float> _width;
        private static ConfigEntry<float> _height;
        private static ConfigEntry<bool> _showText;
        private static ConfigEntry<bool> _showBossOnly;

        public static void BindConfig(ConfigFile cfg)
        {
            _maxDistance = cfg.Bind("血条", "最大距离", 150f, "超过该距离不显示血条");
            _width = cfg.Bind("血条", "宽度", 150f, "血条宽度（像素）");
            _height = cfg.Bind("血条", "高度", 12f, "血条高度（像素）");
            _showText = cfg.Bind("血条", "显示数值", true, "血条上方显示 当前/最大 HP");
            _showBossOnly = cfg.Bind("血条", "仅Boss", false, "开启后只显示 Boss 血条");
        }

        public static void Draw()
        {
            // 无条件记录一次：确认 Draw 是否被调用、以及开关状态（排查"血条不显示"）
            if (!_diagLogged)
            {
                _diagLogged = true;
                Plugin.Log?.LogInfo($"[HealthBarDiag] Draw invoked, Enabled={Enabled}");
            }

            if (!Enabled || Event.current == null || Event.current.type != EventType.Repaint)
                return;

            // ⚠️ 不能用 Camera.main：本作相机未打 MainCamera 标签 → Camera.main 恒为 null →
            // 血条函数第一行就 return（v1.9.4 之前的血条一次都没画过就是这个原因）。
            // 用游戏自己维护的当前相机 GameInfo.CurCamera（自瞄模块同样绕开 Camera.main 才可用）。
            Camera cam = null;
            try
            {
                cam = GameInfo.CurCamera;
            }
            catch
            {
                cam = null;
            }
            if (cam == null)
                cam = Camera.main; // 兜底
            if (cam == null)
            {
                if (_diag < 3)
                {
                    _diag++;
                    Plugin.Log?.LogWarning("[HealthBarDiag] camera is null → 血条无法绘制");
                }
                return;
            }

            // 一次性诊断：统计遍历与过滤情况（定位血条为何不显示）
            int diagTotal = 0, diagCreature = 0, diagAlive = 0, diagDrawn = 0;
            bool doDiag = _diag < 3;

            float maxSqr = _maxDistance.Value * _maxDistance.Value;
            float sqrMax = Mathf.Max(maxSqr, 0.01f);
            Vector3 camPos = cam.transform.position;

            foreach (KeyValuePair<Transform, Item> kv in ItemManager.Items)
            {
                Item item = kv.Value;
                if (doDiag) diagTotal++;
                // Creature 继承 Item，直接类型判断即可（Creature 内部也会 _creature = this，两种取法等价）
                Creature creature = item as Creature;
                if (creature == null && item != null)
                    creature = item.Creature; // 兼容：某些物品上挂着关联生物
                if (doDiag && creature != null) diagCreature++;
                if (!Compat.CreatureAlive(creature))
                    continue;
                if (doDiag) diagAlive++;

                int hp = Compat.CreatureHp(creature);
                bool isBoss = creature.BossType != BossType.None;

                // 分母：普通生物用 MaxHp；当前全局 boss 有玩家人数加成，用 BossManager 同步的上限
                int maxHp = creature.MaxHp;
                if (isBoss && BossManager.Boss == creature && BossManager.BossMaxHp > maxHp)
                    maxHp = BossManager.BossMaxHp;
                if (maxHp <= 0)
                    continue;
                if (_showBossOnly.Value && !isBoss)
                    continue;

                Rigidbody rig = creature.Rig;
                Vector3 center = rig ? rig.worldCenterOfMass : creature.transform.position;
                Vector3 toCenter = center - camPos;
                if (toCenter.sqrMagnitude > sqrMax)
                    continue;

                // 位置：头顶
                Vector3 world = center + Vector3.up * 1.2f;
                Vector3 screen = cam.WorldToScreenPoint(world);
                if (screen.z <= 0f)
                    continue;

                float x = screen.x;
                float y = Screen.height - screen.y; // GUI 坐标 y 向下

                float frac = Mathf.Clamp01(hp / (float)maxHp);
                float w = _width.Value;
                float h = _height.Value;

                // 背景
                DrawRect(new Rect(x - w / 2f - 1f, y - h / 2f - 1f, w + 2f, h + 2f), Color.black);
                // 血条
                Color c = isBoss ? new Color(1f, 0.25f, 0.15f)
                        : frac > 0.5f ? new Color(0.3f, 0.9f, 0.3f)
                        : frac > 0.25f ? new Color(0.95f, 0.85f, 0.2f)
                        : new Color(0.95f, 0.3f, 0.25f);
                DrawRect(new Rect(x - w / 2f, y - h / 2f, w * frac, h), c);

                if (_showText.Value)
                {
                    // v1.9.12 两行布局：上行名字（中文名）、下行血量。宽度按内容自适应，杜绝换行截断。
                    float fs = Mathf.Max(12, UIScale.HintFont);
                    if (_textStyle == null)
                    {
                        _textStyle = new GUIStyle(GUI.skin.label)
                        {
                            alignment = TextAnchor.MiddleCenter,
                            fontStyle = FontStyle.Bold,
                            wordWrap = false,
                            richText = true
                        };
                    }
                    _textStyle.fontSize = (int)fs;

                    string name = null;
                    try
                    {
                        name = creature.GetName();
                    }
                    catch
                    {
                        name = null;
                    }
                    if (string.IsNullOrWhiteSpace(name))
                        name = "???";
                    if (name.Length > 16)
                        name = name.Substring(0, 15) + "…";
                    if (isBoss)
                        name = "<color=#ff6b5e>" + name + "</color>";

                    string hpText = $"{hp}/{maxHp}";
                    _gcName.text = name;
                    _gcHp.text = hpText;
                    Vector2 s1 = _textStyle.CalcSize(_gcName);
                    Vector2 s2 = _textStyle.CalcSize(_gcHp);
                    float tw = Mathf.Max(s1.x, s2.x) + 10f;
                    float lineH = fs * 1.35f;
                    float top = y - h / 2f - lineH * 2f - 4f;

                    DrawLabel(new Rect(x - tw / 2f, top, tw, lineH), name, _textStyle);
                    DrawLabel(new Rect(x - tw / 2f, top + lineH + 2f, tw, lineH), hpText, _textStyle);
                }

                if (doDiag) diagDrawn++;
            }

            if (doDiag)
            {
                _diag++;
                Plugin.Log?.LogInfo(
                    $"[HealthBarDiag] enabled={Enabled} cam={(cam != null ? cam.name : "null")} " +
                    $"items={diagTotal} creatures={diagCreature} alive={diagAlive} drawn={diagDrawn} " +
                    $"maxDist={_maxDistance.Value} bossOnly={_showBossOnly.Value}");
            }
        }

        private static void DrawRect(Rect r, Color c)
        {
            Color prev = GUI.color;
            GUI.color = c;
            GUI.DrawTexture(r, Texture2D.whiteTexture);
            GUI.color = prev;
        }

        private static GUIStyle _textStyle;
        private static GUIContent _gcName = new GUIContent();
        private static GUIContent _gcHp = new GUIContent();

        private static void DrawLabel(Rect r, string text, GUIStyle style)
        {
            Color prev = GUI.color;
            GUI.color = Color.black;
            Rect shadow = new Rect(r.x + 1, r.y + 1, r.width, r.height);
            GUI.Label(shadow, text, style);
            GUI.color = Color.white;
            GUI.Label(r, text, style);
            GUI.color = prev;
        }
    }
}