diff options
Diffstat (limited to 'mbbsd/chc_rule.c')
| -rw-r--r-- | mbbsd/chc_rule.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/mbbsd/chc_rule.c b/mbbsd/chc_rule.c deleted file mode 100644 index df7964a1..00000000 --- a/mbbsd/chc_rule.c +++ /dev/null @@ -1,195 +0,0 @@ -/* $Id: chc_rule.c,v 1.4 2002/07/21 09:26:02 in2 Exp $ */ -#include "bbs.h" - -#define CENTER(a, b) (((a) + (b)) >> 1) - -void -chc_init_board(board_t board) -{ - memset(board, 0, sizeof(board_t)); - board[0][4] = CHE(1, chc_my ^ 1); /* 將 */ - board[0][3] = board[0][5] = CHE(2, chc_my ^ 1); /* 士 */ - board[0][2] = board[0][6] = CHE(3, chc_my ^ 1); /* 象 */ - board[0][0] = board[0][8] = CHE(4, chc_my ^ 1); /* 車 */ - board[0][1] = board[0][7] = CHE(5, chc_my ^ 1); /* 馬 */ - board[2][1] = board[2][7] = CHE(6, chc_my ^ 1); /* 包 */ - board[3][0] = board[3][2] = board[3][4] = - board[3][6] = board[3][8] = CHE(7, chc_my ^ 1); /* 卒 */ - - board[9][4] = CHE(1, chc_my); /* 帥 */ - board[9][3] = board[9][5] = CHE(2, chc_my); /* 仕 */ - board[9][2] = board[9][6] = CHE(3, chc_my); /* 相 */ - board[9][0] = board[9][8] = CHE(4, chc_my); /* 車 */ - board[9][1] = board[9][7] = CHE(5, chc_my); /* 傌 */ - board[7][1] = board[7][7] = CHE(6, chc_my); /* 炮 */ - board[6][0] = board[6][2] = board[6][4] = - board[6][6] = board[6][8] = CHE(7, chc_my); /* 兵 */ -} - -void -chc_movechess(board_t board) -{ - board[chc_to.r][chc_to.c] = board[chc_from.r][chc_from.c]; - board[chc_from.r][chc_from.c] = 0; -} - -static int -dist(rc_t from, rc_t to, int rowcol) -{ - int d; - - d = rowcol ? from.c - to.c : from.r - to.r; - return d > 0 ? d : -d; -} - -static int -between(board_t board, rc_t from, rc_t to, int rowcol) -{ - int i, rtv = 0; - - if (rowcol) { - if (from.c > to.c) - i = from.c, from.c = to.c, to.c = i; - for (i = from.c + 1; i < to.c; i++) - if (board[to.r][i]) - rtv++; - } else { - if (from.r > to.r) - i = from.r, from.r = to.r, to.r = i; - for (i = from.r + 1; i < to.r; i++) - if (board[i][to.c]) - rtv++; - } - return rtv; -} - -int -chc_canmove(board_t board, rc_t from, rc_t to) -{ - int i; - int rd, cd, turn; - - rd = dist(from, to, 0); - cd = dist(from, to, 1); - turn = CHE_O(board[from.r][from.c]); - - /* general check */ - if (board[to.r][to.c] && CHE_O(board[to.r][to.c]) == turn) - return 0; - - /* individual check */ - switch (CHE_P(board[from.r][from.c])) { - case 1: /* 將 帥 */ - if (!(rd == 1 && cd == 0) && - !(rd == 0 && cd == 1)) - return 0; - if ((turn == (chc_my ^ 1) && to.r > 2) || - (turn == chc_my && to.r < 7) || - to.c < 3 || to.c > 5) - return 0; - break; - case 2: /* 士 仕 */ - if (!(rd == 1 && cd == 1)) - return 0; - if ((turn == (chc_my ^ 1) && to.r > 2) || - (turn == chc_my && to.r < 7) || - to.c < 3 || to.c > 5) - return 0; - break; - case 3: /* 象 相 */ - if (!(rd == 2 && cd == 2)) - return 0; - if ((turn == (chc_my ^ 1) && to.r > 4) || - (turn == chc_my && to.r < 5)) - return 0; - /* 拐象腿 */ - if (board[CENTER(from.r, to.r)][CENTER(from.c, to.c)]) - return 0; - break; - case 4: /* 車 */ - if (!(rd > 0 && cd == 0) && - !(rd == 0 && cd > 0)) - return 0; - if (between(board, from, to, rd == 0)) - return 0; - break; - case 5: /* 馬 傌 */ - if (!(rd == 2 && cd == 1) && - !(rd == 1 && cd == 2)) - return 0; - /* 拐馬腳 */ - if (rd == 2) { - if (board[CENTER(from.r, to.r)][from.c]) - return 0; - } else { - if (board[from.r][CENTER(from.c, to.c)]) - return 0; - } - break; - case 6: /* 包 炮 */ - if (!(rd > 0 && cd == 0) && - !(rd == 0 && cd > 0)) - return 0; - i = between(board, from, to, rd == 0); - if ((i > 1) || - (i == 1 && !board[to.r][to.c]) || - (i == 0 && board[to.r][to.c])) - return 0; - break; - case 7: /* 卒 兵 */ - if (!(rd == 1 && cd == 0) && - !(rd == 0 && cd == 1)) - return 0; - if (((turn == (chc_my ^ 1) && to.r < 5) || - (turn == chc_my && to.r > 4)) && - cd != 0) - return 0; - if ((turn == (chc_my ^ 1) && to.r < from.r) || - (turn == chc_my && to.r > from.r)) - return 0; - break; - } - return 1; -} - -static void -findking(board_t board, int turn, rc_t * buf) -{ - int i, r, c; - - r = (turn == (chc_my ^ 1)) ? 0 : 7; - for (i = 0; i < 3; r++, i++) - for (c = 3; c < 6; c++) - if (CHE_P(board[r][c]) == 1 && - CHE_O(board[r][c]) == turn) { - buf->r = r, buf->c = c; - return; - } -} - -int -chc_iskfk(board_t board) -{ - rc_t from, to; - - findking(board, 0, &to); - findking(board, 1, &from); - if (from.c == to.c && between(board, from, to, 0) == 0) - return 1; - return 0; -} - -int -chc_ischeck(board_t board, int turn) -{ - rc_t from, to; - - findking(board, turn, &to); - for (from.r = 0; from.r < BRD_ROW; from.r++) - for (from.c = 0; from.c < BRD_COL; from.c++) - if (board[from.r][from.c] && - CHE_O(board[from.r][from.c]) != turn) - if (chc_canmove(board, from, to)) - return 1; - return 0; -} |