Fix random moves when time < 10ms

[stockfish] / src / timeman.cpp

diff --git a/src/timeman.cpp b/src/timeman.cpp
index b69169007e2ec15b0e353986d5ccd9b18ed5fa2a..bdcaee84c5f4ce10bc75198993ed6c6d315d0d30 100644 (file)
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -20,7 +20,6 @@
 #include <cmath>
 #include <algorithm>
 
-#include "misc.h"
 #include "search.h"
 #include "timeman.h"
 #include "ucioption.h"
@@ -30,7 +29,7 @@ namespace {
   /// Constants
 
   const int MoveHorizon  = 50;    // Plan time management at most this many moves ahead
-  const float MaxRatio   = 3.0f;  // When in trouble, we can step over reserved time with this ratio
+  const float MaxRatio   = 7.0f;  // When in trouble, we can step over reserved time with this ratio
   const float StealRatio = 0.33f; // However we must not steal time from remaining moves over this ratio
 
 
@@ -73,18 +72,17 @@ namespace {
   enum TimeType { OptimumTime, MaxTime };
 
   template<TimeType>
-  int remaining(int myTime, int movesToGo, int fullMoveNumber);
+  int remaining(int myTime, int movesToGo, int fullMoveNumber, int slowMover);
 }
 
 
-void TimeManager::pv_instability(int curChanges, int prevChanges) {
+void TimeManager::pv_instability(float bestMoveChanges) {
 
-    unstablePVExtraTime =  curChanges  * (optimumSearchTime / 2)
-                         + prevChanges * (optimumSearchTime / 3);
+  unstablePVExtraTime = int(bestMoveChanges * optimumSearchTime);
 }
 
 
-void TimeManager::init(const SearchLimits& limits, int currentPly)
+void TimeManager::init(const Search::LimitsType& limits, int currentPly, Color us)
 {
   /* We support four different kind of time controls:
 
@@ -104,35 +102,36 @@ void TimeManager::init(const SearchLimits& limits, int currentPly)
   int hypMTG, hypMyTime, t1, t2;
 
   // Read uci parameters
-  int emergencyMoveHorizon = Options["Emergency Move Horizon"].value<int>();
-  int emergencyBaseTime    = Options["Emergency Base Time"].value<int>();
-  int emergencyMoveTime    = Options["Emergency Move Time"].value<int>();
-  int minThinkingTime      = Options["Minimum Thinking Time"].value<int>();
+  int emergencyMoveHorizon = Options["Emergency Move Horizon"];
+  int emergencyBaseTime    = Options["Emergency Base Time"];
+  int emergencyMoveTime    = Options["Emergency Move Time"];
+  int minThinkingTime      = Options["Minimum Thinking Time"];
+  int slowMover            = Options["Slow Mover"];
 
   // Initialize to maximum values but unstablePVExtraTime that is reset
   unstablePVExtraTime = 0;
-  optimumSearchTime = maximumSearchTime = limits.time;
+  optimumSearchTime = maximumSearchTime = limits.time[us];
 
   // We calculate optimum time usage for different hypothetic "moves to go"-values and choose the
   // minimum of calculated search time values. Usually the greatest hypMTG gives the minimum values.
-  for (hypMTG = 1; hypMTG <= (limits.movesToGo ? std::min(limits.movesToGo, MoveHorizon) : MoveHorizon); hypMTG++)
+  for (hypMTG = 1; hypMTG <= (limits.movestogo ? std::min(limits.movestogo, MoveHorizon) : MoveHorizon); hypMTG++)
   {
       // Calculate thinking time for hypothetic "moves to go"-value
-      hypMyTime =  limits.time
-                 + limits.increment * (hypMTG - 1)
+      hypMyTime =  limits.time[us]
+                 + limits.inc[us] * (hypMTG - 1)
                  - emergencyBaseTime
                  - emergencyMoveTime * std::min(hypMTG, emergencyMoveHorizon);
 
       hypMyTime = std::max(hypMyTime, 0);
 
-      t1 = minThinkingTime + remaining<OptimumTime>(hypMyTime, hypMTG, currentPly);
-      t2 = minThinkingTime + remaining<MaxTime>(hypMyTime, hypMTG, currentPly);
+      t1 = minThinkingTime + remaining<OptimumTime>(hypMyTime, hypMTG, currentPly, slowMover);
+      t2 = minThinkingTime + remaining<MaxTime>(hypMyTime, hypMTG, currentPly, slowMover);
 
       optimumSearchTime = std::min(optimumSearchTime, t1);
       maximumSearchTime = std::min(maximumSearchTime, t2);
   }
 
-  if (Options["Ponder"].value<bool>())
+  if (Options["Ponder"])
       optimumSearchTime += optimumSearchTime / 4;
 
   // Make sure that maxSearchTime is not over absoluteMaxSearchTime
@@ -143,12 +142,12 @@ void TimeManager::init(const SearchLimits& limits, int currentPly)
 namespace {
 
   template<TimeType T>
-  int remaining(int myTime, int movesToGo, int currentPly)
+  int remaining(int myTime, int movesToGo, int currentPly, int slowMover)
   {
     const float TMaxRatio   = (T == OptimumTime ? 1 : MaxRatio);
     const float TStealRatio = (T == OptimumTime ? 0 : StealRatio);
 
-    int thisMoveImportance = move_importance(currentPly);
+    int thisMoveImportance = move_importance(currentPly) * slowMover / 100;
     int otherMovesImportance = 0;
 
     for (int i = 1; i < movesToGo; i++)