diff --git a/Project/Steal/Steal.nut b/Project/Steal/Steal.nut
index d1c364a..9decee4 100644
--- a/Project/Steal/Steal.nut
+++ b/Project/Steal/Steal.nut
@@ -15,6 +15,9 @@ class StealC_Password_Box extends LenheartNewUI_CommonUi {
     RowDurationMs = 500;
     RowHeight = 24;
     ColumnYOffset = 0;
+    CorrectIndex = 0;
+    IsStopped = false;
+    IsLockedCorrect = false;
 
 
     constructor(X, Y, ...) {
@@ -34,7 +37,7 @@ class StealC_Password_Box extends LenheartNewUI_CommonUi {
             NumberSeq.append(Info);
         }
 
-        local CorrectIndex = sq_getRandom(0, 9);
+        CorrectIndex = sq_getRandom(0, 9);
         NumberSeq[CorrectIndex].CorrectFlag = true;
 
         local SeqLen = NumberSeq.len();
@@ -75,6 +78,44 @@ class StealC_Password_Box extends LenheartNewUI_CommonUi {
         ScrollBaseIndex = GetLoopIndex(InitBaseIndex - PassedRows);
     }
 
+    function GetCorrectCenterY(RefY) {
+        local SeqLen = NumberSeq.len();
+        if (SeqLen <= 0) {
+            return Y;
+        }
+        local Delta = GetLoopIndex(CorrectIndex - ScrollBaseIndex);
+        local TextY = Y + 10;
+        local BaseY = TextY + Delta * RowHeight + ScrollPixelOffset + ColumnYOffset + 8;
+        local CycleHeight = SeqLen * RowHeight;
+        local BestY = BaseY;
+        local BestDist = abs(BestY - RefY);
+        for (local k = -2; k <= 2; k++) {
+            local CY = BaseY + (k * CycleHeight);
+            local Dist = abs(CY - RefY);
+            if (Dist < BestDist) {
+                BestY = CY;
+                BestDist = Dist;
+            }
+        }
+        return BestY;
+    }
+
+    function TryLockByLine(LockCenterY, TolerancePx) {
+        if (IsStopped) {
+            return false;
+        }
+        if (!IsStopped) {
+            UpdateScrollByClock();
+        }
+        local Dist = abs(GetCorrectCenterY(LockCenterY) - LockCenterY);
+        if (Dist <= TolerancePx) {
+            IsStopped = true;
+            IsLockedCorrect = true;
+            return true;
+        }
+        return false;
+    }
+
     function Show(obj) {
         Parent.Img.DrawExPng(10, X, Y, 0, sq_RGBA(255, 255, 255, 90), 1.0, 1.0);
 
@@ -83,7 +124,9 @@ class StealC_Password_Box extends LenheartNewUI_CommonUi {
             return;
         }
 
-        UpdateScrollByClock();
+        if (!IsStopped) {
+            UpdateScrollByClock();
+        }
 
         local DrawCount = (Height / RowHeight).tointeger() + 4;
         local TextY = Y + 10;
@@ -112,6 +155,8 @@ class StealC extends LenheartNewUI_Windows {
 
     //解锁完成度
     UnlockComplete = 0.57;
+    CorrectLockedCount = 0;
+    LockTolerancePx = 8;
 
     constructor(gObjectId, gX, gY, gWidth, gHeight, gTitleH) {
         Childrens = [];
@@ -137,6 +182,35 @@ class StealC extends LenheartNewUI_Windows {
 
 
     //绘制主界面
+    function GetLockCenterY() {
+        return Y + 268 + 60;
+    }
+
+    function GetFocusPasswordBox() {
+        foreach(Child in Childrens) {
+            if ((Child instanceof StealC_Password_Box) && !Child.IsStopped) {
+                return Child;
+            }
+        }
+        return null;
+    }
+
+    function CheckSpaceLock() {
+        if (!Visible) {
+            return;
+        }
+        if (!KeyPressNB.isKeyPress(7, "StealC")) {
+            return;
+        }
+        local FocusBox = GetFocusPasswordBox();
+        if (!FocusBox) {
+            return;
+        }
+        if (FocusBox.TryLockByLine(GetLockCenterY(), LockTolerancePx)) {
+            CorrectLockedCount += 1;
+        }
+    }
+
     function DrawMain(obj) {
         //灰色背景
         DrawNineBoxAlpha(X, Y, 800, 600, "interface2/common/mypopup/popup.img", 0, 150);
@@ -176,6 +250,7 @@ class StealC extends LenheartNewUI_Windows {
     //逻辑入口
     function Proc(obj) {
         LenheartNewUI_Windows.SyncPos(X, Y);
+        CheckSpaceLock();
     }
 
 }