X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fendgame.h;h=21e8ab6d6e5b6d249a765f0c4381c9cf7465f93a;hp=ae3526fedaeae8777416c5fa7263ced01c7a618f;hb=039badfda8fa05bc466612bce996837c7d69f22b;hpb=bb751d6c890f5c50c642366d601740366cfae8d0

diff --git a/src/endgame.h b/src/endgame.h
index ae3526fe..21e8ab6d 100644
--- a/src/endgame.h
+++ b/src/endgame.h
@@ -1,17 +1,18 @@
 /*
-  Glaurung, a UCI chess playing engine.
-  Copyright (C) 2004-2008 Tord Romstad
+  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+  Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+  Copyright (C) 2008 Marco Costalba
 
-  Glaurung is free software: you can redistribute it and/or modify
+  Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
-  Glaurung is distributed in the hope that it will be useful,
+
+  Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -33,72 +34,41 @@
 //// Types
 ////
 
-/// Abstract base class for all special endgame evaluation functions:
+/// Abstract base class for all special endgame evaluation functions
 
 class EndgameEvaluationFunction {
 public:
   EndgameEvaluationFunction(Color c);
   virtual ~EndgameEvaluationFunction() { }
 
-  virtual Value apply(const Position &pos) =0;
+  virtual Value apply(const Position &pos) = 0;
 
 protected:
   Color strongerSide, weakerSide;
 };
 
 
-/// Subclasses for various concrete endgames:
-
-// Generic "mate lone king" eval:
-class KXKEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KXKEvaluationFunction(Color c);
-  Value apply(const Position &pos);
-};
-
-// KBN vs K:
-class KBNKEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KBNKEvaluationFunction(Color c);
-  Value apply(const Position &pos);
-};
-
-// KP vs K:
-class KPKEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KPKEvaluationFunction(Color c);
-  Value apply(const Position &pos);
-};
-
-// KR vs KP:
-class KRKPEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KRKPEvaluationFunction(Color c);
-  Value apply(const Position &pos);
-};
-
-// KR vs KB:
-class KRKBEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KRKBEvaluationFunction(Color c);
-  Value apply(const Position &pos);
-};
+/// Template subclass for various concrete endgames
 
-// KR vs KN:
-class KRKNEvaluationFunction : public EndgameEvaluationFunction {
-public:
-  KRKNEvaluationFunction(Color c);
-  Value apply(const Position &pos);
+enum EndgameType {
+    KXK,   // Generic "mate lone king" eval
+    KBNK,  // KBN vs K
+    KPK,   // KP vs K
+    KRKP,  // KR vs KP
+    KRKB,  // KR vs KB
+    KRKN,  // KR vs KN
+    KQKR,  // KQ vs KR
+    KBBKN, // KBB vs KN
+    KmmKm  // K and two minors vs K and one or two minors
 };
 
-// KQ vs KR:
-class KQKREvaluationFunction : public EndgameEvaluationFunction {
+template<EndgameType>
+class EvaluationFunction : public EndgameEvaluationFunction {
 public:
-  KQKREvaluationFunction(Color c);
-  Value apply(const Position &pos);
+  explicit EvaluationFunction(Color c): EndgameEvaluationFunction(c) {}
+  Value apply(const Position& pos);
 };
 
-
 /// Abstract base class for all evaluation scaling functions:
 
 class ScalingFunction {
@@ -183,26 +153,15 @@ public:
 //// Constants and variables
 ////
 
-// Generic "mate lone king" eval:
-extern KXKEvaluationFunction EvaluateKXK, EvaluateKKX;
-
-// KBN vs K:
-extern KBNKEvaluationFunction EvaluateKBNK, EvaluateKKBN;
-
-// KP vs K:
-extern KPKEvaluationFunction EvaluateKPK, EvaluateKKP;
-
-// KR vs KP:
-extern KRKPEvaluationFunction EvaluateKRKP, EvaluateKPKR;
-
-// KR vs KB:
-extern KRKBEvaluationFunction EvaluateKRKB, EvaluateKBKR;
-
-// KR vs KN:
-extern KRKNEvaluationFunction EvaluateKRKN, EvaluateKNKR;
-
-// KQ vs KR:
-extern KQKREvaluationFunction EvaluateKQKR, EvaluateKRKQ;
+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:
 
 // KBP vs K:
 extern KBPKScalingFunction ScaleKBPK, ScaleKKBP;