summaryrefslogtreecommitdiffstats
path: root/mbbsd/chc_rule.c
diff options
context:
space:
mode:
Diffstat (limited to 'mbbsd/chc_rule.c')
-rw-r--r--mbbsd/chc_rule.c212
1 files changed, 115 insertions, 97 deletions
diff --git a/mbbsd/chc_rule.c b/mbbsd/chc_rule.c
index e5a92c32..62996764 100644
--- a/mbbsd/chc_rule.c
+++ b/mbbsd/chc_rule.c
@@ -1,177 +1,195 @@
-/* $Id: chc_rule.c,v 1.2 2002/06/04 13:08:33 in2 Exp $ */
+/* $Id: chc_rule.c,v 1.3 2002/07/05 17:10:27 in2 Exp $ */
#include "bbs.h"
#define CENTER(a, b) (((a) + (b)) >> 1)
-void chc_init_board(board_t board) {
+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[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[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 */
+ board[6][6] = board[6][8] = CHE(7, chc_my); /* 兵 */
}
-void chc_movechess(board_t board) {
+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;
-
+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;
+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)
+ 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++;
+ for (i = from.c + 1; i < to.c; i++)
+ if (board[to.r][i])
+ rtv++;
} else {
- if(from.r > to.r)
+ 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++;
+ 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;
+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)
+ 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))
+ 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) ||
+ if ((turn == (chc_my ^ 1) && to.r > 2) ||
+ (turn == chc_my && to.r < 7) ||
to.c < 3 || to.c > 5)
- return 0;
+ return 0;
break;
- case 2: /* 士 仕 */
- if(!(rd == 1 && cd == 1))
+ 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) ||
+ 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))
+ 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)])
+ 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))
+ case 4: /* 車 */
+ if (!(rd > 0 && cd == 0) &&
+ !(rd == 0 && cd > 0))
return 0;
- if(between(board, from, to, rd == 0))
+ if (between(board, from, to, rd == 0))
return 0;
break;
- case 5: /* 馬 傌 */
- if(!(rd == 2 && cd == 1) &&
- !(rd == 1 && cd == 2))
+ 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])
+ if (rd == 2) {
+ if (board[CENTER(from.r, to.r)][from.c])
return 0;
} else {
- if(board[from.r][CENTER(from.c, to.c)])
+ 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))
+ 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;
+ 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))
+ 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)) &&
+ 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))
+ 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;
+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) {
+ 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 ;
+ return;
}
}
-int chc_iskfk(board_t board) {
- rc_t from, to;
-
+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)
+ 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;
-
+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))
+ 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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 19:12:37 +0800