Introduce Null Threat extension

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index f27c04ec834ae4ef3b870b6a56739382b556ad2f..1f396f759dec73b90edd30aa1e406325cf4c725f 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -36,8 +36,8 @@ namespace {
   struct EvalInfo {
 
     // Pointers to material and pawn hash table entries
-    MaterialEntry* mi;
-    PawnEntry* pi;
+    Material::Entry* mi;
+    Pawns::Entry* pi;
 
     // attackedBy[color][piece type] is a bitboard representing all squares
     // attacked by a given color and piece type, attackedBy[color][0] contains
@@ -361,13 +361,14 @@ namespace {
 template<bool Trace>
 Value do_evaluate(const Position& pos, Value& margin) {
 
-  assert(!pos.in_check());
+  assert(!pos.checkers());
 
   EvalInfo ei;
   Score score, mobilityWhite, mobilityBlack;
 
   Key key = pos.key();
-  Eval::Entry* e = pos.this_thread()->evalTable[key];
+  Thread* th = pos.this_thread();
+  Eval::Entry* e = th->evalTable[key];
 
   // If e->key matches the position's hash key, it means that we have analysed
   // this node before, and we can simply return the information we found the last
@@ -391,7 +392,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
   score = pos.psq_score() + (pos.side_to_move() == WHITE ? Tempo : -Tempo);
 
   // Probe the material hash table
-  ei.mi = pos.this_thread()->materialTable.probe(pos);
+  ei.mi = Material::probe(pos, th->materialTable, th->endgames);
   score += ei.mi->material_value();
 
   // If we have a specialized evaluation function for the current material
@@ -404,7 +405,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
   }
 
   // Probe the pawn hash table
-  ei.pi = pos.this_thread()->pawnTable.probe(pos);
+  ei.pi = Pawns::probe(pos, th->pawnsTable);
   score += ei.pi->pawns_value();
 
   // Initialize attack and king safety bitboards
@@ -1013,7 +1014,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
 
             // Opponent king cannot block because path is defended and position
             // is not in check. So only friendly pieces can be blockers.
-            assert(!pos.in_check());
+            assert(!pos.checkers());
             assert((queeningPath & pos.pieces()) == (queeningPath & pos.pieces(c)));
 
             // Add moves needed to free the path from friendly pieces and retest condition