#include "piece.h"
-////
-//// Constants and variables
-////
-
-const int SlidingArray[18] = {
- 0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
-};
-
-const SquareDelta Directions[16][16] = {
- {DELTA_ZERO},
- {DELTA_NW, DELTA_NE, DELTA_ZERO},
- {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
- DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
- {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_ZERO},
- {DELTA_ZERO},
- {DELTA_SW, DELTA_SE, DELTA_ZERO},
- {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
- DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
- {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-};
-
-const SquareDelta PawnPush[2] = {
- DELTA_N, DELTA_S
-};
-
-
////
//// Functions
////
-/// Translating piece types to/from English piece letters:
+/// Translating piece types to/from English piece letters
static const char PieceChars[] = " pnbrqk";
-char piece_type_to_char(PieceType pt, bool upcase) {
+int piece_type_to_char(PieceType pt, bool upcase) {
return upcase? toupper(PieceChars[pt]) : PieceChars[pt];
}
PieceType piece_type_from_char(char c) {
- const char *ch = strchr(PieceChars, tolower(c));
+ const char* ch = strchr(PieceChars, tolower(c));
return ch? PieceType(ch - PieceChars) : NO_PIECE_TYPE;
}
-
-
-/// piece_is_ok() and piece_type_is_ok(), for debugging:
-
-bool piece_is_ok(Piece pc) {
- return
- piece_type_is_ok(type_of_piece(pc)) &&
- color_is_ok(color_of_piece(pc));
-}
-
-bool piece_type_is_ok(PieceType pc) {
- return pc >= PAWN && pc <= KING;
-}