-TimeManagement Time; // Our global time management object
-
-namespace {
-
- enum TimeType { OptimumTime, MaxTime };
-
- const int MoveHorizon = 50; // Plan time management at most this many moves ahead
- const double MaxRatio = 7.09; // When in trouble, we can step over reserved time with this ratio
- const double StealRatio = 0.35; // However we must not steal time from remaining moves over this ratio
-
-
- // move_importance() is an exponential function based on naive observation
- // that a game is closer to be decided after each half-move. This function
- // should be decreasing and with "nice" convexity properties.
-
- double move_importance(int ply) {
-
- const double PlyScale = 109.3265;
- const double PlyGrowth = 4.0;
-
- return exp(-pow(ply / PlyScale, PlyGrowth)) + DBL_MIN; // Ensure non-zero
- }
-
- template<TimeType T>
- int remaining(int myTime, int movesToGo, int ply)
- {
- const double TMaxRatio = (T == OptimumTime ? 1 : MaxRatio);
- const double TStealRatio = (T == OptimumTime ? 0 : StealRatio);
-
- double moveImportance = move_importance(ply);
- double otherMovesImportance = 0;
-
- for (int i = 1; i < movesToGo; ++i)
- otherMovesImportance += move_importance(ply + 2 * i);