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comparison: src/chess/king.c

src/chess/king.c

changeset 195
27d02ccb0cef
parent 194
619f07c95894
equal deleted inserted replaced
194:619f07c95894 195:27d02ccb0cef
29 29
30 #include "rules.h" 30 #include "rules.h"
31 #include "king.h" 31 #include "king.h"
32 32
33 static bool king_castling_chkmoved( 33 static bool king_castling_chkmoved(
34 const GameState *gamestate, Rank rank, File file) { 34 const GameState *gamestate, File file, Rank rank) {
35 35
36 for (unsigned i = 0; i < gamestate->movecount; i++) { 36 for (unsigned i = 0; i < gamestate->movecount; i++) {
37 if (gamestate->moves[i].fromfile == file 37 if (gamestate->moves[i].fromfile == file
38 && gamestate->moves[i].fromrank == rank) { 38 && gamestate->moves[i].fromrank == rank) {
39 return true; 39 return true;
53 move->fromrank == (piece_color(move->piece) == WHITE ? 0 : 7) && 53 move->fromrank == (piece_color(move->piece) == WHITE ? 0 : 7) &&
54 move->fromfile == fileidx('e') && 54 move->fromfile == fileidx('e') &&
55 (move->tofile == fileidx('c') || move->tofile == fileidx('g'))) { 55 (move->tofile == fileidx('c') || move->tofile == fileidx('g'))) {
56 56
57 return !king_castling_chkmoved(gamestate, 57 return !king_castling_chkmoved(gamestate,
58 move->fromrank, move->fromfile) && 58 move->fromfile, move->fromrank) &&
59 !king_castling_chkmoved(gamestate, move->fromrank, 59 !king_castling_chkmoved(gamestate,
60 move->tofile == fileidx('c') ? 0 : 7); 60 move->tofile == fileidx('c') ? 0 : 7, move->fromrank);
61 } else { 61 } else {
62 return false; 62 return false;
63 } 63 }
64 } 64 }
65 } 65 }
80 bool incheck = false; 80 bool incheck = false;
81 if (gamestate->movecount > 0) { 81 if (gamestate->movecount > 0) {
82 incheck = is_check_position(gamestate); 82 incheck = is_check_position(gamestate);
83 } 83 }
84 blocked |= incheck || gamestate->board[move->torank][midfile] || 84 blocked |= incheck || gamestate->board[move->torank][midfile] ||
85 is_covered(gamestate, move->torank, midfile, op_color); 85 is_covered(gamestate, midfile, move->torank, op_color);
86 } 86 }
87 87
88 return blocked; 88 return blocked;
89 } 89 }
90 90
91 size_t king_moves(const GameState *gamestate, 91 size_t king_moves(const GameState *gamestate,
92 Color c, Rank r, File f, Move *moves) { 92 Color c, File f, Rank r, Move *moves) {
93 93
94 size_t count = 0; 94 size_t count = 0;
95 Piece king = mkpiece(KING, c); 95 Piece king = mkpiece(KING, c);
96 96
97 for (int dr = -1 ; dr <= 1 ; dr++) { 97 for (int dr = -1 ; dr <= 1 ; dr++) {
111 moves[count].piece = king; 111 moves[count].piece = king;
112 moves[count].fromrank = r; 112 moves[count].fromrank = r;
113 moves[count].fromfile = f; 113 moves[count].fromfile = f;
114 moves[count].torank = torank; 114 moves[count].torank = torank;
115 moves[count].tofile = tofile; 115 moves[count].tofile = tofile;
116 moves[count].capture = piece_at(gamestate, torank, tofile) != 0; 116 moves[count].capture = piece_at(gamestate, tofile, torank) != 0;
117 count++; 117 count++;
118 } 118 }
119 } 119 }
120 120
121 Rank homerank = c == WHITE ? 0 : 7; 121 Rank homerank = c == WHITE ? 0 : 7;

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