X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpiece.h;fp=src%2Fpiece.h;h=341e877dab938863708cc6216676d0766e933fef;hp=12983a6bb92a996b7fc6df6ff4ba5da780170d78;hb=95212222c7444538b84326208e433ac12f15e9fb;hpb=2ff2b5972799c2cb1b68e2d82e35b9b3c7c6996d

diff --git a/src/piece.h b/src/piece.h
index 12983a6b..341e877d 100644
--- a/src/piece.h
+++ b/src/piece.h
@@ -20,7 +20,6 @@
 #if !defined(PIECE_H_INCLUDED)
 #define PIECE_H_INCLUDED
 
-#include "color.h"
 #include "value.h"
 
 enum PieceType {
@@ -33,8 +32,13 @@ enum Piece {
   BP = 9, BN = 10, BB = 11, BR = 12, BQ = 13, BK = 14, PIECE_NONE = 16
 };
 
+enum Color {
+  WHITE, BLACK, COLOR_NONE
+};
+
 ENABLE_OPERATORS_ON(PieceType)
 ENABLE_OPERATORS_ON(Piece)
+ENABLE_OPERATORS_ON(Color)
 
 /// Important: If the material values are changed, one must also
 /// adjust the piece square tables, and the method game_phase() in the
@@ -65,6 +69,14 @@ inline Color color_of_piece(Piece p) {
   return Color(int(p) >> 3);
 }
 
+inline Color opposite_color(Color c) {
+  return Color(int(c) ^ 1);
+}
+
+inline bool color_is_ok(Color c) {
+  return c == WHITE || c == BLACK;
+}
+
 inline bool piece_type_is_ok(PieceType pt) {
   return pt >= PAWN && pt <= KING;
 }