X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fendgame.h;h=89b5ca4dab85fcd9b1024495b873e0973d1a8dc3;hp=cb087b4b4cfe0e3686081f2543c3a31c5c4d2d3d;hb=a98dee783582c84ca2647ca28daad0c9a13d1d35;hpb=67375f4693c97fb1321864bb4d143812cd824f9b

diff --git a/src/endgame.h b/src/endgame.h
index cb087b4b..89b5ca4d 100644
--- a/src/endgame.h
+++ b/src/endgame.h
@@ -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 Marco Costalba
+  Copyright (C) 2008-2010 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
@@ -26,7 +26,6 @@
 ////
 
 #include "position.h"
-#include "scale.h"
 #include "value.h"
 
 
@@ -45,15 +44,17 @@ enum EndgameType {
     KRKN,  // KR vs KN
     KQKR,  // KQ vs KR
     KBBKN, // KBB vs KN
+    KNNK,  // KNN vs K
     KmmKm, // K and two minors vs K and one or two minors
 
     // Scaling functions
-    KBPK,    // KBP vs K
-    KQKRP,   // KQ vs KRP
+    KBPsK,   // KB+pawns vs K
+    KQKRPs,  // KQ vs KR+pawns
     KRPKR,   // KRP vs KR
     KRPPKRP, // KRPP vs KRP
     KPsK,    // King and pawns vs king
     KBPKB,   // KBP vs KB
+    KBPPKB,  // KBPP vs KB
     KBPKN,   // KBP vs KN
     KNPK,    // KNP vs K
     KPKP     // KP vs KP
@@ -64,9 +65,10 @@ enum EndgameType {
 template<typename T>
 class EndgameFunctionBase {
 public:
-  EndgameFunctionBase(Color c) : strongerSide(c) { weakerSide = opposite_color(strongerSide); }
+  EndgameFunctionBase(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {}
   virtual ~EndgameFunctionBase() {}
-  virtual T apply(const Position&) = 0;
+  virtual T apply(const Position&) const = 0;
+  Color color() const { return strongerSide; }
 
 protected:
   Color strongerSide, weakerSide;
@@ -80,41 +82,19 @@ typedef EndgameFunctionBase<ScaleFactor> EndgameScalingFunctionBase;
 
 template<EndgameType>
 struct EvaluationFunction : public EndgameEvaluationFunctionBase {
+  typedef EndgameEvaluationFunctionBase Base;
   explicit EvaluationFunction(Color c): EndgameEvaluationFunctionBase(c) {}
-  Value apply(const Position&);
+  Value apply(const Position&) const;
 };
 
 template<EndgameType>
 struct ScalingFunction : public EndgameScalingFunctionBase {
+  typedef EndgameScalingFunctionBase Base;
   explicit ScalingFunction(Color c) : EndgameScalingFunctionBase(c) {}
-  ScaleFactor apply(const Position&);
+  ScaleFactor apply(const Position&) const;
 };
 
 
-////
-//// Constants and variables
-////
-
-extern EvaluationFunction<KXK> EvaluateKXK, EvaluateKKX;       // Generic "mate lone king" eval
-extern EvaluationFunction<KBNK> EvaluateKBNK, EvaluateKKBN;    // KBN vs K
-extern EvaluationFunction<KPK> EvaluateKPK, EvaluateKKP;       // KP vs K
-extern EvaluationFunction<KRKP> EvaluateKRKP, EvaluateKPKR;    // KR vs KP
-extern EvaluationFunction<KRKB> EvaluateKRKB, EvaluateKBKR;    // KR vs KB
-extern EvaluationFunction<KRKN> EvaluateKRKN, EvaluateKNKR;    // KR vs KN
-extern EvaluationFunction<KQKR> EvaluateKQKR, EvaluateKRKQ;    // KQ vs KR
-extern EvaluationFunction<KBBKN> EvaluateKBBKN, EvaluateKNKBB; // KBB vs KN
-extern EvaluationFunction<KmmKm> EvaluateKmmKm; // K and two minors vs K and one or two minors:
-
-extern ScalingFunction<KBPK> ScaleKBPK, ScaleKKBP;    // KBP vs K
-extern ScalingFunction<KQKRP> ScaleKQKRP, ScaleKRPKQ; // KQ vs KRP
-extern ScalingFunction<KRPKR> ScaleKRPKR, ScaleKRKRP; // KRP vs KR
-extern ScalingFunction<KRPPKRP> ScaleKRPPKRP, ScaleKRPKRPP; // KRPP vs KRP
-extern ScalingFunction<KPsK> ScaleKPsK, ScaleKKPs;    // King and pawns vs king
-extern ScalingFunction<KBPKB> ScaleKBPKB, ScaleKBKBP; // KBP vs KB
-extern ScalingFunction<KBPKN> ScaleKBPKN, ScaleKNKBP; // KBP vs KN
-extern ScalingFunction<KNPK> ScaleKNPK, ScaleKKNP;    // KNP vs K
-extern ScalingFunction<KPKP> ScaleKPKPw, ScaleKPKPb;  // KP vs KP
-
 ////
 //// Prototypes
 ////