From 42afd92370c176df586a3ff5828e10af71f619eb Mon Sep 17 00:00:00 2001
From: shangfengh <3495281661@qq.com>
Date: Tue, 24 Oct 2023 16:25:41 +0800
Subject: [PATCH] feat: :sparkles: add the SafeValue StartTime

---
 logic/GameClass/GameObj/Map/Chest.cs          |   4 +-
 .../Utility/SafeValue/InTheRange.cs           | 236 ++++++-----
 .../Utility/SafeValue/TimeBased.cs            | 380 +++++++++++++++++-
 3 files changed, 505 insertions(+), 115 deletions(-)

diff --git a/logic/GameClass/GameObj/Map/Chest.cs b/logic/GameClass/GameObj/Map/Chest.cs
index aae11fa..bf4e833 100644
--- a/logic/GameClass/GameObj/Map/Chest.cs
+++ b/logic/GameClass/GameObj/Map/Chest.cs
@@ -18,7 +18,7 @@ namespace GameClass.GameObj
         private readonly Gadget[] propInChest = new Gadget[GameData.maxNumOfPropInChest] { new NullProp(), new NullProp() };
         public Gadget[] PropInChest => propInChest;
 
-        private TimeBasedProgressForInterrupting openProgress = new TimeBasedProgressForInterrupting();
-        public TimeBasedProgressForInterrupting OpenProgress { get => openProgress; }
+        private TimeBasedProgressOptimizedForInterrupting openProgress = new TimeBasedProgressOptimizedForInterrupting();
+        public TimeBasedProgressOptimizedForInterrupting OpenProgress { get => openProgress; }
     }
 }
diff --git a/logic/Preparation/Utility/SafeValue/InTheRange.cs b/logic/Preparation/Utility/SafeValue/InTheRange.cs
index 44595be..1437e58 100644
--- a/logic/Preparation/Utility/SafeValue/InTheRange.cs
+++ b/logic/Preparation/Utility/SafeValue/InTheRange.cs
@@ -13,6 +13,7 @@ namespace Preparation.Utility
         private int v;
         private int maxV;
         private readonly object vLock = new();
+        #region 构造与读取
         public IntInTheVariableRange(int value, int maxValue)
         {
             if (maxValue < 0)
@@ -50,7 +51,10 @@ namespace Preparation.Utility
         public int GetValue() { lock (vLock) return v; }
         public static implicit operator int(IntInTheVariableRange aint) => aint.GetValue();
         public int GetMaxV() { lock (vLock) return maxV; }
+        public bool IsMaxV() { lock (vLock) return v == maxV; }
+        #endregion
 
+        #region 普通设置MaxV与Value的值的方法
         /// <summary>
         /// 若maxValue<=0则maxValue设为0并返回False
         /// </summary>
@@ -82,29 +86,7 @@ namespace Preparation.Utility
                 if (v > maxValue) v = maxValue;
             }
         }
-        /// <summary>
-        /// 如果当前值大于maxValue,则更新maxValue失败
-        /// </summary>
-        public bool TrySetMaxV(int maxValue)
-        {
-            lock (vLock)
-            {
-                if (v > maxValue) return false;
-                maxV = maxValue;
-                return true;
-            }
-        }
 
-        /// <summary>
-        /// 应当保证该value>=0
-        /// </summary>
-        public int SetPositiveV(int value)
-        {
-            lock (vLock)
-            {
-                return v = (value > maxV) ? maxV : value;
-            }
-        }
         public int SetV(int value)
         {
             if (value <= 0)
@@ -119,6 +101,19 @@ namespace Preparation.Utility
                 return v = (value > maxV) ? maxV : value;
             }
         }
+        /// <summary>
+        /// 应当保证该value>=0
+        /// </summary>
+        public int SetPositiveV(int value)
+        {
+            lock (vLock)
+            {
+                return v = (value > maxV) ? maxV : value;
+            }
+        }
+        #endregion
+
+        #region 普通运算
         /// <returns>返回实际改变量</returns>
         public int AddV(int addV)
         {
@@ -193,30 +188,26 @@ namespace Preparation.Utility
             }
             return subPositiveV;
         }
+        #endregion
 
+        #region 特殊条件的设置MaxV与Value的值的方法
         /// <summary>
-        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// 如果当前值大于maxValue,则更新maxValue失败
         /// </summary>
-        /// <returns>返回实际改变量</returns>
-        public int TryAddToMaxV(int addV)
+        public bool TrySetMaxV(int maxValue)
         {
             lock (vLock)
             {
-                if (maxV - v <= addV)
-                {
-                    addV = maxV - v;
-                    v = maxV;
-                    return addV;
-                }
-                return -1;
+                if (v > maxValue) return false;
+                maxV = maxValue;
+                return true;
             }
         }
-
-        public bool Set0IfNotMax()
+        public bool Set0IfNotMaxor0()
         {
             lock (vLock)
             {
-                if (v < maxV)
+                if (v < maxV && v > 0)
                 {
                     v = 0;
                     return true;
@@ -236,14 +227,27 @@ namespace Preparation.Utility
             }
             return false;
         }
+        #endregion
 
-        public bool IsMaxV()
+        #region 特殊条件的运算
+        /// <summary>
+        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// </summary>
+        /// <returns>返回实际改变量</returns>
+        public int TryAddToMaxV(int addV)
         {
             lock (vLock)
             {
-                return v == maxV;
+                if (maxV - v <= addV)
+                {
+                    addV = maxV - v;
+                    v = maxV;
+                    return addV;
+                }
+                return -1;
             }
         }
+        #endregion
     }
 
     /// <summary>
@@ -254,6 +258,7 @@ namespace Preparation.Utility
         private long v;
         private long maxV;
         private readonly object vLock = new();
+        #region 构造与读取
         public LongInTheVariableRange(long value, long maxValue)
         {
             if (maxValue < 0)
@@ -291,7 +296,16 @@ namespace Preparation.Utility
         public long GetValue() { lock (vLock) return v; }
         public static implicit operator long(LongInTheVariableRange aint) => aint.GetValue();
         public long GetMaxV() { lock (vLock) return maxV; }
+        public bool IsMaxV()
+        {
+            lock (vLock)
+            {
+                return v == maxV;
+            }
+        }
+        #endregion
 
+        #region 普通设置MaxV与Value的值的方法
         /// <summary>
         /// 若maxValue<=0则maxValue设为0并返回False
         /// </summary>
@@ -323,29 +337,7 @@ namespace Preparation.Utility
                 if (v > maxValue) v = maxValue;
             }
         }
-        /// <summary>
-        /// 如果当前值大于maxValue,则更新maxValue失败
-        /// </summary>
-        public bool TrySetMaxV(long maxValue)
-        {
-            lock (vLock)
-            {
-                if (v > maxValue) return false;
-                maxV = maxValue;
-                return true;
-            }
-        }
 
-        /// <summary>
-        /// 应当保证该value>=0
-        /// </summary>
-        public long SetPositiveV(long value)
-        {
-            lock (vLock)
-            {
-                return v = (value > maxV) ? maxV : value;
-            }
-        }
         public long SetV(long value)
         {
             if (value <= 0)
@@ -360,6 +352,19 @@ namespace Preparation.Utility
                 return v = (value > maxV) ? maxV : value;
             }
         }
+        /// <summary>
+        /// 应当保证该value>=0
+        /// </summary>
+        public long SetPositiveV(long value)
+        {
+            lock (vLock)
+            {
+                return v = (value > maxV) ? maxV : value;
+            }
+        }
+        #endregion
+
+        #region 普通运算
         /// <returns>返回实际改变量</returns>
         public long AddV(long addV)
         {
@@ -434,22 +439,19 @@ namespace Preparation.Utility
             }
             return subPositiveV;
         }
+        #endregion
 
+        #region 特殊条件的设置MaxV与Value的值的方法
         /// <summary>
-        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// 如果当前值大于maxValue,则更新maxValue失败
         /// </summary>
-        /// <returns>返回实际改变量</returns>
-        public long TryAddToMaxV(long addV)
+        public bool TrySetMaxV(long maxValue)
         {
             lock (vLock)
             {
-                if (maxV - v <= addV)
-                {
-                    addV = maxV - v;
-                    v = maxV;
-                    return addV;
-                }
-                return -1;
+                if (v > maxValue) return false;
+                maxV = maxValue;
+                return true;
             }
         }
 
@@ -477,14 +479,27 @@ namespace Preparation.Utility
             }
             return false;
         }
+        #endregion
 
-        public bool IsMaxV()
+        #region 特殊条件的运算
+        /// <summary>
+        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// </summary>
+        /// <returns>返回实际改变量</returns>
+        public long TryAddToMaxV(long addV)
         {
             lock (vLock)
             {
-                return v == maxV;
+                if (maxV - v <= addV)
+                {
+                    addV = maxV - v;
+                    v = maxV;
+                    return addV;
+                }
+                return -1;
             }
         }
+        #endregion
     }
 
     /// <summary>
@@ -495,6 +510,7 @@ namespace Preparation.Utility
         private double v;
         private double maxV;
         private readonly object vLock = new();
+        #region 构造与读取
         public DoubleInTheVariableRange(double value, double maxValue)
         {
             if (maxValue < 0)
@@ -532,7 +548,16 @@ namespace Preparation.Utility
         public double GetValue() { lock (vLock) return v; }
         public static implicit operator double(DoubleInTheVariableRange adouble) => adouble.GetValue();
         public double GetMaxV() { lock (vLock) return maxV; }
+        public bool IsMaxV()
+        {
+            lock (vLock)
+            {
+                return v == maxV;
+            }
+        }
+        #endregion
 
+        #region 普通设置MaxV与Value的值的方法
         /// <summary>
         /// 若maxValue<=0则maxValue设为0并返回False
         /// </summary>
@@ -564,29 +589,7 @@ namespace Preparation.Utility
                 if (v > maxValue) v = maxValue;
             }
         }
-        /// <summary>
-        /// 如果当前值大于maxValue,则更新maxValue失败
-        /// </summary>
-        public bool TrySetMaxV(double maxValue)
-        {
-            lock (vLock)
-            {
-                if (v > maxValue) return false;
-                maxV = maxValue;
-                return true;
-            }
-        }
 
-        /// <summary>
-        /// 应当保证该value>=0
-        /// </summary>
-        public double SetPositiveV(double value)
-        {
-            lock (vLock)
-            {
-                return v = (value > maxV) ? maxV : value;
-            }
-        }
         public double SetV(double value)
         {
             if (value <= 0)
@@ -601,6 +604,19 @@ namespace Preparation.Utility
                 return v = (value > maxV) ? maxV : value;
             }
         }
+        /// <summary>
+        /// 应当保证该value>=0
+        /// </summary>
+        public double SetPositiveV(double value)
+        {
+            lock (vLock)
+            {
+                return v = (value > maxV) ? maxV : value;
+            }
+        }
+        #endregion
+
+        #region 普通运算
         /// <returns>返回实际改变量</returns>
         public double AddV(double addV)
         {
@@ -675,22 +691,19 @@ namespace Preparation.Utility
             }
             return subPositiveV;
         }
+        #endregion
 
+        #region 特殊条件的设置MaxV与Value的值的方法
         /// <summary>
-        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// 如果当前值大于maxValue,则更新maxValue失败
         /// </summary>
-        /// <returns>返回实际改变量</returns>
-        public double TryAddToMaxV(double addV)
+        public bool TrySetMaxV(double maxValue)
         {
             lock (vLock)
             {
-                if (maxV - v <= addV)
-                {
-                    addV = maxV - v;
-                    v = maxV;
-                    return addV;
-                }
-                return -1;
+                if (v > maxValue) return false;
+                maxV = maxValue;
+                return true;
             }
         }
 
@@ -718,13 +731,26 @@ namespace Preparation.Utility
             }
             return false;
         }
+        #endregion
 
-        public bool IsMaxV()
+        #region 特殊条件的运算
+        /// <summary>
+        /// 试图加到满，如果无法加到maxValue则不加并返回-1
+        /// </summary>
+        /// <returns>返回实际改变量</returns>
+        public double TryAddToMaxV(double addV)
         {
             lock (vLock)
             {
-                return v == maxV;
+                if (maxV - v <= addV)
+                {
+                    addV = maxV - v;
+                    v = maxV;
+                    return addV;
+                }
+                return -1;
             }
         }
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/logic/Preparation/Utility/SafeValue/TimeBased.cs b/logic/Preparation/Utility/SafeValue/TimeBased.cs
index 566441c..7f34068 100644
--- a/logic/Preparation/Utility/SafeValue/TimeBased.cs
+++ b/logic/Preparation/Utility/SafeValue/TimeBased.cs
@@ -5,23 +5,47 @@ namespace Preparation.Utility
 {
     //其对应属性不应当有set访问器，避免不安全的=赋值
 
+    /// <summary>
+    /// 记录上次Start的时间，尚未Start则为long.MaxValue
+    /// 当前不为long.MaxValue则不能Start
+    /// </summary>
+    public class StartTime
+    {
+        private long _time;
+        public StartTime(long time)
+        {
+            _time = time;
+        }
+        public StartTime() { _time = long.MaxValue; }
+        public long Get() => Interlocked.CompareExchange(ref _time, -2, -2);
+        /// <returns>返回操作前的值</returns>
+        public long Start() => Interlocked.CompareExchange(ref _time, Environment.TickCount64, long.MaxValue);
+        /// <returns>返回操作前的值</returns>
+        public long Stop() => Interlocked.Exchange(ref _time, long.MaxValue);
+        public void StopIfPassing(long passedTime)
+        {
+            if (Environment.TickCount64 - Interlocked.CompareExchange(ref _time, -2, -2) > passedTime)
+                Interlocked.Exchange(ref _time, long.MaxValue);
+        }
+    }
+
     /// <summary>
     /// 根据时间推算Start后完成多少进度的进度条（long）。
     /// 只允许Start（清零状态的进度条才可以Start）时修改needTime（请确保大于0）；
     /// 支持InterruptToSet0使未完成的进度条终止清零；支持Set0使进度条强制终止清零；
     /// 通过原子操作实现。
     /// </summary>
-    public class TimeBasedProgressForInterrupting
+    public class TimeBasedProgressOptimizedForInterrupting
     {
         private long endT = long.MaxValue;
         private long needT;
 
-        public TimeBasedProgressForInterrupting(long needTime)
+        public TimeBasedProgressOptimizedForInterrupting(long needTime)
         {
-            if (needTime <= 0) Debugger.Output("Bug:TimeBasedProgressForInterrupting.needTime (" + needTime.ToString() + ") is less than 0.");
+            if (needTime <= 0) Debugger.Output("Bug:TimeBasedProgressOptimizedForInterrupting.needProgress (" + needTime.ToString() + ") is less than 0.");
             this.needT = needTime;
         }
-        public TimeBasedProgressForInterrupting()
+        public TimeBasedProgressOptimizedForInterrupting()
         {
             this.needT = 0;
         }
@@ -32,7 +56,7 @@ namespace Preparation.Utility
         {
             return Interlocked.CompareExchange(ref endT, -2, -2) <= Environment.TickCount64;
         }
-        public bool IsOpened() => Interlocked.Read(ref endT) != long.MaxValue;
+        public bool IsStarted() => Interlocked.Read(ref endT) != long.MaxValue;
         /// <summary>
         /// GetProgress<0则表明未开始
         /// </summary>
@@ -68,7 +92,7 @@ namespace Preparation.Utility
         /// <summary>
         /// <0则表明未开始
         /// </summary>
-        public static implicit operator long(TimeBasedProgressForInterrupting pLong) => pLong.GetProgress();
+        public static implicit operator long(TimeBasedProgressOptimizedForInterrupting pLong) => pLong.GetProgress();
 
         /// <summary>
         /// GetProgressDouble<0则表明未开始
@@ -94,12 +118,12 @@ namespace Preparation.Utility
         {
             if (needTime <= 0)
             {
-                Debugger.Output("Warning:Start TimeBasedProgressForInterrupting with the needTime (" + needTime.ToString() + ") which is less than 0.");
+                Debugger.Output("Warning:Start TimeBasedProgressOptimizedForInterrupting with the needProgress (" + needTime.ToString() + ") which is less than 0.");
                 return false;
             }
             //规定只有Start可以修改needT，且需要先访问endTime，从而避免锁（某种程度上endTime可以认为是needTime的锁）
             if (Interlocked.CompareExchange(ref endT, Environment.TickCount64 + needTime, long.MaxValue) != long.MaxValue) return false;
-            if (needTime <= 2) Debugger.Output("Warning:the field of TimeBasedProgressForInterrupting is " + needTime.ToString() + ",which is too small.");
+            if (needTime <= 2) Debugger.Output("Warning:the field of TimeBasedProgressOptimizedForInterrupting is " + needTime.ToString() + ",which is too small.");
             Interlocked.Exchange(ref needT, needTime);
             return true;
         }
@@ -127,6 +151,346 @@ namespace Preparation.Utility
         }
         //增加其他新的写操作可能导致不安全
     }
+    /*
+    public class TimeBasedProgressAtVariableSpeed
+    {
+        private long progress = 0;
+        private long lastStartT = long.MaxValue;
+        private readonly object progressLock = new();
+        private long needProgress;
+
+        public TimeBasedProgressAtVariableSpeed(long needProgress)
+        {
+            if (needProgress <= 0) Debugger.Output("Bug:TimeBasedProgressAtVariableSpeed.needProgress (" + needProgress.ToString() + ") is less than 0.");
+            this.needProgress = needProgress;
+        }
+        public TimeBasedProgressAtVariableSpeed()
+        {
+            this.needProgress = 0;
+        }
+        public long GetNeedProgress() 
+        {
+            lock (progressLock) return needProgress; 
+        }
+        public override string ToString()
+        {
+            lock (progressLock)  
+            {
+                return "NeedProgress:" + Interlocked.CompareExchange(ref needProgress, -2, -2).ToString() + " ms, "
+                            + "FinishedProgress:" + progress.ToString() +"ms, "
+                            + "lastStartTime:" +lastStartT.ToString() +"ms";
+            }
+        }
+        public long GetProgressNow() 
+        {
+            lock (progressLock)
+            {
+                if (lastStartT==long.MaxValue) return progress;
+                long progressNow = progress + Environment.TickCount64 - lastStartT;
+                if (progressNow>= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    return progress = needProgress;
+                }
+                return progressNow;
+            }
+        }
+
+        public bool IsFinished()
+        {
+            lock (progressLock)
+            {
+                if (progress >= needProgress) return true;
+                if (progress + Environment.TickCount64 - lastStartT >= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    progress = needProgress;
+                    return true;
+                }
+                return false;
+            }
+        }
+        public bool IsProgressing() 
+        {
+            lock (progressLock)
+            {
+                if (lastStartT==long.MaxValue) return false;
+                if (progress + Environment.TickCount64 - lastStartT >= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    progress = needProgress;
+                    return false;
+                }
+                return true;
+            }
+        }
+
+        /// <summary>
+        /// GetProgress<0则表明未开始
+        /// </summary>
+        public long GetProgress()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            return Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+        }
+        public long GetNonNegativeProgress()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            long progress = Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+            return progress < 0 ? 0 : progress;
+        }
+        /// <summary>
+        /// GetProgress<0则表明未开始
+        /// </summary>
+        public long GetProgress(long time)
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - time;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            return Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+        }
+        public long GetNonNegativeProgress(long time)
+        {
+            long cutime = Interlocked.Read(ref endT) - time;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            long progress = Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+            return progress < 0 ? 0 : progress;
+        }
+        /// <summary>
+        /// <0则表明未开始
+        /// </summary>
+        public static implicit operator long(TimeBasedProgressAtVariableSpeed pLong) => pLong.GetProgress();
+
+        /// <summary>
+        /// GetProgressDouble<0则表明未开始
+        /// </summary>
+        public double GetProgressDouble()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return 1;
+            long needTime = Interlocked.CompareExchange(ref needProgress, -2, -2);
+            if (needTime == 0) return 0;
+            return 1.0 - ((double)cutime / needTime);
+        }
+        public double GetNonNegativeProgressDouble(long time)
+        {
+            long cutime = Interlocked.Read(ref endT) - time;
+            if (cutime <= 0) return 1;
+            long needTime = Interlocked.CompareExchange(ref needProgress, -2, -2);
+            if (needTime <= cutime) return 0;
+            return 1.0 - ((double)cutime / needTime);
+        }
+
+        public bool Start(long needTime)
+        {
+            if (needTime <= 2)
+            {
+                Debugger.Output("Warning:Start TimeBasedProgressAtVariableSpeed with the needProgress (" + needTime.ToString() + ") which is less than 0.");
+                return false;
+            }
+            //规定只有Start可以修改needT，且需要先访问startTime，从而避免锁（某种程度上endTime可以认为是needTime的锁）
+            if (Interlocked.CompareExchange(ref lastStartT, Environment.TickCount64, long.MaxValue) != long.MaxValue) return false;
+            Interlocked.Exchange(ref needProgress, needTime);
+            return true;
+        }
+        public bool Start()
+        {
+            return Interlocked.CompareExchange(ref lastStartT, Environment.TickCount64, long.MaxValue) == long.MaxValue;
+        }
+        /// <summary>
+        /// 使进度条强制终止清零
+        /// </summary>
+        public void Set0()
+        {
+            Interlocked.Exchange(ref lastStartT, long.MaxValue);
+            Interlocked.Exchange(ref progress, 0);
+        }
+        /// <summary>
+        /// 使进度条暂停
+        /// </summary>
+        public bool Pause()
+        {
+            Interlocked.CompareExchange(ref lastStartT, -2, -2)
+            if (Environment.TickCount64 < )
+            {
+                Interlocked.Exchange(ref endT, long.MaxValue);
+                return true;
+            }
+            return false;
+        }
+    }*/
+
+    public class TimeBasedProgressAtVariableSpeed
+    {
+        private long progress = 0;
+        private long lastStartT = long.MaxValue;
+        private readonly object progressLock = new();
+        private long needProgress;
+        private double speed;
+
+        public TimeBasedProgressAtVariableSpeed(long needProgress, double speed)
+        {
+            if (needProgress <= 0) Debugger.Output("Bug:TimeBasedProgressAtVariableSpeed.needProgress (" + needProgress.ToString() + ") is less than 0.");
+            this.needProgress = needProgress;
+            this.speed = speed;
+        }
+        public TimeBasedProgressAtVariableSpeed()
+        {
+            this.needProgress = 0;
+        }
+        public long GetNeedProgress()
+        {
+            lock (progressLock) return needProgress;
+        }
+        public override string ToString()
+        {
+            lock (progressLock)
+            {
+                return "NeedProgress:" + Interlocked.CompareExchange(ref needProgress, -2, -2).ToString() + " ms, "
+                            + "FinishedProgress:" + progress.ToString() + "ms, "
+                            + "lastStartTime:" + lastStartT.ToString() + "ms";
+            }
+        }
+        public long GetProgressNow()
+        {
+            lock (progressLock)
+            {
+                if (lastStartT == long.MaxValue) return progress;
+                long progressNow = progress + Environment.TickCount64 - lastStartT;
+                if (progressNow >= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    return progress = needProgress;
+                }
+                return progressNow;
+            }
+        }
+
+        public bool IsFinished()
+        {
+            lock (progressLock)
+            {
+                if (progress >= needProgress) return true;
+                if (progress + Environment.TickCount64 - lastStartT >= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    progress = needProgress;
+                    return true;
+                }
+                return false;
+            }
+        }
+        public bool IsProgressing()
+        {
+            lock (progressLock)
+            {
+                if (lastStartT == long.MaxValue) return false;
+                if (progress + Environment.TickCount64 - lastStartT >= needProgress)
+                {
+                    lastStartT = long.MaxValue;
+                    progress = needProgress;
+                    return false;
+                }
+                return true;
+            }
+        }
+
+        /// <summary>
+        /// GetProgress<0则表明未开始
+        /// </summary>
+        public long GetProgress()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            return Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+        }
+        public long GetNonNegativeProgress()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            long progress = Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+            return progress < 0 ? 0 : progress;
+        }
+        /// <summary>
+        /// GetProgress<0则表明未开始
+        /// </summary>
+        public long GetProgress(long time)
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - time;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            return Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+        }
+        public long GetNonNegativeProgress(long time)
+        {
+            long cutime = Interlocked.Read(ref endT) - time;
+            if (cutime <= 0) return Interlocked.CompareExchange(ref needProgress, -2, -2);
+            long progress = Interlocked.CompareExchange(ref needProgress, -2, -2) - cutime;
+            return progress < 0 ? 0 : progress;
+        }
+        /// <summary>
+        /// <0则表明未开始
+        /// </summary>
+        public static implicit operator long(TimeBasedProgressAtVariableSpeed pLong) => pLong.GetProgress();
+
+        /// <summary>
+        /// GetProgressDouble<0则表明未开始
+        /// </summary>
+        public double GetProgressDouble()
+        {
+            long cutime = Interlocked.CompareExchange(ref endT, -2, -2) - Environment.TickCount64;
+            if (cutime <= 0) return 1;
+            long needTime = Interlocked.CompareExchange(ref needProgress, -2, -2);
+            if (needTime == 0) return 0;
+            return 1.0 - ((double)cutime / needTime);
+        }
+        public double GetNonNegativeProgressDouble(long time)
+        {
+            long cutime = Interlocked.Read(ref endT) - time;
+            if (cutime <= 0) return 1;
+            long needTime = Interlocked.CompareExchange(ref needProgress, -2, -2);
+            if (needTime <= cutime) return 0;
+            return 1.0 - ((double)cutime / needTime);
+        }
+
+        public bool Start(long needTime)
+        {
+            if (needTime <= 2)
+            {
+                Debugger.Output("Warning:Start TimeBasedProgressAtVariableSpeed with the needProgress (" + needTime.ToString() + ") which is less than 0.");
+                return false;
+            }
+            //规定只有Start可以修改needT，且需要先访问startTime，从而避免锁（某种程度上endTime可以认为是needTime的锁）
+            if (Interlocked.CompareExchange(ref lastStartT, Environment.TickCount64, long.MaxValue) != long.MaxValue) return false;
+            Interlocked.Exchange(ref needProgress, needTime);
+            return true;
+        }
+        public bool Start()
+        {
+            return Interlocked.CompareExchange(ref lastStartT, Environment.TickCount64, long.MaxValue) == long.MaxValue;
+        }
+        /// <summary>
+        /// 使进度条强制终止清零
+        /// </summary>
+        public void Set0()
+        {
+            Interlocked.Exchange(ref lastStartT, long.MaxValue);
+            Interlocked.Exchange(ref progress, 0);
+        }
+        /// <summary>
+        /// 使进度条暂停
+        /// </summary>
+        public bool Pause()
+        {
+            Interlocked.CompareExchange(ref lastStartT, -2, -2)
+            if (Environment.TickCount64 < )
+            {
+                Interlocked.Exchange(ref endT, long.MaxValue);
+                return true;
+            }
+            return false;
+        }
+    }
 
     /// <summary>
     /// 冷却时间为可变的CDms的bool，不支持查看当前进度，初始为True