feat: ping两步点击+蓝色描边+StepManager步骤追踪

PingClickHandler:
- 蓝色圆环闪烁描边
- 第一点击: 停止闪烁显示模型
- 第二点击: 显示chanrao隐藏自己激活下个ping
- UndoSecondClick/UndoShow 支持撤销

StepManager:
- 新增PingStepPrevious/PingStepNext/RecordPingStep
- PreviousStep/NextStep ping步优先于woman步
- InitPingSteps初始化ping/chanrao引用

Assets/Scripts/Core/StepManager.cs

@@ -125,15 +125,98 @@ public class StepManager : MonoBehaviour
     public void NextStep()
     {
         // Woman 自由步进优先
+        if (_pingObjects != null && _pingObjects.Length > 0 && _pingStepIndex < _pingMaxStep) { PingStepNext(); return; }
         if (_womanObject != null && _womanPositions != null) { WomanStepNext(); return; }
         if (_activeSteps == null) return;
         if (_currentStepIndex >= _activeSteps.Length - 1) { CompleteExperiment(); return; }
         GoToStep(_currentStepIndex + 1);
     }
 
-    public void PreviousStep()
+    private void PingStepPrevious()
+    {
+        if (_pingStepIndex <= 0) return;
+        int idx = (_pingStepIndex - 1) / 2; // ping index (0-3, mapping to 004-001)
+        bool wasSecond = (_pingStepIndex - 1) % 2 == 1; // true if was second click
+
+        if (wasSecond)
+        {
+            // Undo second click: hide chanrao, restore ping to first-click state
+            if (_chanraoObjects != null && idx < _chanraoObjects.Length && _chanraoObjects[idx] != null)
+                _chanraoObjects[idx].SetActive(false);
+            if (_pingObjects != null && idx < _pingObjects.Length && _pingObjects[idx] != null)
+            {
+                var h = _pingObjects[idx].GetComponent<PingClickHandler>();
+                if (h != null) h.UndoSecondClick();
+            }
+        }
+        else
+        {
+            // Undo first click: hide current ping, show previous ping (if any)
+            if (_pingObjects != null && idx < _pingObjects.Length && _pingObjects[idx] != null)
+            {
+                var h = _pingObjects[idx].GetComponent<PingClickHandler>();
+                if (h != null) h.UndoShow();
+            }
+            // If going back to start, show ping.004
+            if (idx == 0 && _pingObjects != null && _pingObjects.Length > 0 && _pingObjects[0] != null)
+                _pingObjects[0].SetActive(true);
+        }
+        _pingStepIndex--;
+        Debug.Log($"StepManager: Ping撤销 -> {_pingStepIndex}");
+        OnStepChanged?.Invoke(_pingStepIndex);
+    }
+
+    private void PingStepNext()
+    {
+        if (_pingStepIndex >= _pingMaxStep) return;
+        int idx = _pingStepIndex / 2;
+        bool isSecond = _pingStepIndex % 2 == 1;
+
+        if (!isSecond)
+        {
+            // Advance to first click: ensure ping is visible and in first-click state
+            if (_pingObjects != null && idx < _pingObjects.Length && _pingObjects[idx] != null)
+            {
+                var ping = _pingObjects[idx];
+                ping.SetActive(true);
+                var h = ping.GetComponent<PingClickHandler>();
+                if (h != null)
+                {
+                    h.UndoSecondClick(); // Reset to first-click state
+                    // Trigger first click via reflection/method
+                }
+            }
+        }
+        else
+        {
+            // Advance to second click: show chanrao
+            if (_chanraoObjects != null && idx < _chanraoObjects.Length && _chanraoObjects[idx] != null)
+                _chanraoObjects[idx].SetActive(true);
+            if (_pingObjects != null && idx < _pingObjects.Length && _pingObjects[idx] != null)
+            {
+                var h = _pingObjects[idx].GetComponent<PingClickHandler>();
+                if (h != null) h.UndoShow();
+            }
+            // Show next ping for first click
+            if (idx + 1 < 4 && _pingObjects != null && _pingObjects[idx+1] != null)
+                _pingObjects[idx+1].SetActive(true);
+        }
+        _pingStepIndex++;
+        Debug.Log($"StepManager: Ping前进 -> {_pingStepIndex}");
+        OnStepChanged?.Invoke(_pingStepIndex);
+    }
+
+    public void RecordPingStep(int pingIndex, bool secondClick)
+    {
+        _pingStepIndex = pingIndex * 2 + (secondClick ? 2 : 1);
+        Debug.Log($"StepManager: Ping步进 -> {_pingStepIndex} (ping{pingIndex} second={secondClick})");
+        OnStepChanged?.Invoke(_pingStepIndex);
+    }
+
+    public public void PreviousStep()
     {
         // Woman 自由步进优先
+        if (_pingObjects != null && _pingObjects.Length > 0 && _pingStepIndex > 0) { PingStepPrevious(); return; }
         if (_womanObject != null && _womanPositions != null) { WomanStepPrevious(); return; }
         if (_activeSteps == null) return;
         if (_currentStepIndex <= 0) return;
@@ -201,6 +284,25 @@ public class StepManager : MonoBehaviour
         Debug.Log($"StepManager: Woman步进已初始化, 共{_womanMaxStep}个位置");
     }
 
+    public void InitPingSteps()
+    {
+        var mi = GameObject.Find("manInjury");
+        if (mi == null) return;
+        _pingObjects = new GameObject[4];
+        _chanraoObjects = new GameObject[4];
+        for (int i = 1; i <= 4; i++)
+        {
+            string pn = "ping." + i.ToString("D3");
+            string cn = "chanrao." + i.ToString("D3");
+            var pt = mi.transform.Find(pn);
+            var ct = mi.transform.Find(cn);
+            if (pt != null) _pingObjects[i-1] = pt.gameObject;
+            if (ct != null) _chanraoObjects[i-1] = ct.gameObject;
+        }
+        _pingStepIndex = 0;
+        Debug.Log("StepManager: Ping步进已初始化");
+    }
+
     public void RecordWomanStep(int newStepIndex) { _womanStepIndex = Mathf.Clamp(newStepIndex, 0, _womanMaxStep); Debug.Log($"StepManager: Woman步进 -> {_womanStepIndex}"); OnStepChanged?.Invoke(_womanStepIndex); }
 
     private void WomanStepPrevious()
@@ -267,6 +369,10 @@ public class StepManager : MonoBehaviour
     private int _womanMaxStep = 3;
     private Transform[] _womanPositions;
     private GameObject[] _touchPoints;
+    private GameObject[] _pingObjects;
+    private GameObject[] _chanraoObjects;
+    private int _pingStepIndex = 0;
+    private int _pingMaxStep = 8; // 4 pings × 2 clicks each
 
 
     private Vector3 _womanInitPos;