优化效果

Assets/Scripts/FixSystemNew/BodyModule/GearFollower.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Shapes;
 using UnityEngine;
 
 public class GearFollower : MonoBehaviour
@@ -12,9 +13,12 @@ public class GearFollower : MonoBehaviour
 
     [Header("切割轨迹")]
     public LineRenderer cutLineRenderer;
+
     public float cutLineWidth = 0.1f;
     public float noiseAmount = 0.05f;  // 毛刺偏移幅度
 
+    public float segmentDuration = 4f;  // 线段持续时间
+
     private List<Vector2> edgePoints;
     private List<Vector2> originalEdgePoints;  // 存储原始边缘点
     private int currentEdgeIndex = 0;
@@ -31,6 +35,20 @@ public class GearFollower : MonoBehaviour
     private float directionSwitchCooldown = 0.2f;
     private float directionSwitchTimer = 0f;
 
+    private class TimedPoint
+    {
+        public Vector3 position;
+        public float timeAdded;
+        public TimedPoint(Vector3 pos, float time)
+        {
+            position = pos;
+            timeAdded = time;
+        }
+    }
+
+    private List<TimedPoint> timedCutPoints = new List<TimedPoint>();
+    public float cutLineDelay = 3f;  // 延迟几秒才显示轨迹点
+
     void Start()
     {
         mainCamera = Camera.main;
@@ -42,6 +60,7 @@ public class GearFollower : MonoBehaviour
             cutLineRenderer.widthCurve = AnimationCurve.Constant(0, 1, cutLineWidth);
             cutLineRenderer.material = new Material(Shader.Find("Sprites/Default"));
             cutLineRenderer.numCapVertices = 0; // 线头不圆滑，显锐利
+            cutLineRenderer.sortingOrder = 1;
         }
     }
 
@@ -63,6 +82,7 @@ public class GearFollower : MonoBehaviour
                 UpdateTractionState(mouseWorldPos);
                 break;
         }
+        UpdateCutLineRenderer();
     }
 
     private void LoadEdgePointsFromSprite()
@@ -127,7 +147,6 @@ public class GearFollower : MonoBehaviour
 
         Debug.Log($"边缘点数量：{edgePoints.Count}");
     }
-
     private void UpdateFollowState(Vector2 mousePos)
     {
         transform.position = mousePos;
@@ -149,7 +168,6 @@ public class GearFollower : MonoBehaviour
             currentState = State.Traction;
         }
     }
-
     private void UpdateTractionState(Vector2 mousePos)
     {
         Vector2 gearPos = transform.position;
@@ -223,7 +241,7 @@ public class GearFollower : MonoBehaviour
         Vector2 originalFrom = originalEdgePoints[currentEdgeIndex];
         Vector2 originalTo = originalEdgePoints[nextIndex];
         Vector2 originalTargetPoint = GetClosestPointOnSegment(originalFrom, originalTo, transform.position);
-        
+
         // 记录切割点（带噪声模拟毛糙）
         Vector3 noisyPoint = originalTargetPoint;
         noisyPoint.x += Random.Range(-noiseAmount, noiseAmount);
@@ -243,23 +261,48 @@ public class GearFollower : MonoBehaviour
 
     private void AddCutPoint(Vector3 point)
     {
-        if (cutLinePoints.Count == 0 || Vector3.Distance(cutLinePoints[cutLinePoints.Count - 1], point) > 0.01f)
+        if (timedCutPoints.Count == 0 || Vector3.Distance(timedCutPoints[timedCutPoints.Count - 1].position, point) > 0.05f)
         {
-            cutLinePoints.Add(point);
-            if (cutLineRenderer != null)
+            timedCutPoints.Add(new TimedPoint(point, Time.time));
+            
+            // 立即创建片段
+            if (timedCutPoints.Count >= 2)
             {
-                cutLineRenderer.positionCount = cutLinePoints.Count;
-                cutLineRenderer.SetPositions(cutLinePoints.ToArray());
+                Vector3 prev = timedCutPoints[timedCutPoints.Count - 2].position;
+                Vector3 curr = timedCutPoints[timedCutPoints.Count - 1].position;
+                CreateSegment(prev, curr);
             }
         }
     }
+    private void UpdateCutLineRenderer()
+    {
+        if (cutLineRenderer == null) return;
+
+        float currentTime = Time.time;
+        List<Vector3> visiblePoints = new List<Vector3>();
+
+        foreach (var timedPoint in timedCutPoints)
+        {
+            if (currentTime - timedPoint.timeAdded >= cutLineDelay)
+            {
+                visiblePoints.Add(timedPoint.position);
+            }
+            else
+            {
+                // 这里的点还没到延迟时间，不显示
+            }
+        }
+
+        cutLineRenderer.positionCount = visiblePoints.Count;
+        if (visiblePoints.Count > 0)
+            cutLineRenderer.SetPositions(visiblePoints.ToArray());
+    }
 
     private void EndCutting()
     {
         isCutting = false;
         // 这里可以添加切割结束后的淡出效果等
     }
-
     private int FindNearestEdgePointIndex(Vector2 pos, out float minDist)
     {
         int nearestIndex = 0;
@@ -291,4 +334,20 @@ public class GearFollower : MonoBehaviour
         if (index >= edgePoints.Count - 1) return 0;
         return index;
     }
+    private void CreateSegment(Vector3 from, Vector3 to)
+    {
+        GameObject segObj = new GameObject("HeatLineSegment");
+        segObj.transform.parent = this.transform;
+
+        LineRenderer segLine = segObj.AddComponent<LineRenderer>();
+        segLine.positionCount = 2;
+        segLine.SetPosition(0, from);
+        segLine.SetPosition(1, to);
+        segLine.sortingOrder = 4;
+        segLine.material = new Material(Shader.Find("Sprites/Default"));
+        segLine.widthCurve = AnimationCurve.Constant(0, 1, cutLineWidth);
+        segLine.numCapVertices = 0;
+        var segmentController = segObj.AddComponent<HeatLineSegmentController>();
+        segmentController.duration = segmentDuration;
+    }
 }

Assets/Scripts/FixSystemNew/BodyModule/HeatLineSegmentController.cs

@@ -0,0 +1,51 @@
+using UnityEngine;
+using DG.Tweening;
+
+public class HeatLineSegmentController : MonoBehaviour
+{
+    private LineRenderer lineRenderer;
+    private Sequence sequence;
+
+    public float duration = 4f; // 整个冷却淡出时间
+    public Color hotColor = Color.red;
+    public Color coldColor = Color.black;
+
+    void Awake()
+    {
+        lineRenderer = GetComponent<LineRenderer>();
+        if (lineRenderer == null)
+        {
+            Debug.LogError("HeatLineSegmentController需要LineRenderer组件");
+        }
+        lineRenderer.startColor = lineRenderer.endColor = hotColor;
+    }
+
+    void Start()
+    {
+        // 创建颜色渐变序列
+        sequence = DOTween.Sequence();
+        
+        // 颜色从热色到冷色
+        sequence.Append(DOTween.To(() => lineRenderer.startColor, x => {
+            lineRenderer.startColor = x;
+            lineRenderer.endColor = x;
+        }, coldColor, duration * 0.7f).SetEase(Ease.InOutQuad));
+        
+        // 淡出效果
+        sequence.Append(DOTween.To(() => lineRenderer.startColor.a, x => {
+            Color c = lineRenderer.startColor;
+            c.a = x;
+            lineRenderer.startColor = c;
+            lineRenderer.endColor = c;
+        }, 0f, duration * 0.3f).SetEase(Ease.InQuad));
+        
+        // 完成后销毁对象
+        sequence.OnComplete(() => Destroy(gameObject));
+    }
+
+    void OnDestroy()
+    {
+        // 清理DOTween序列
+        sequence?.Kill();
+    }
+}

Assets/Scripts/FixSystemNew/BodyModule/HeatLineSegmentController.cs.meta

@@ -0,0 +1,11 @@
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+guid: 6a522756b1d3f1640981d73f044ab755
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
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