1.1 --- a/src/game.h Wed Mar 26 13:16:49 2014 +0100
1.2 +++ b/src/game.h Wed Mar 26 14:12:59 2014 +0100
1.3 @@ -78,11 +78,21 @@
1.4
1.5 #define POS_UNSPECIFIED UINT8_MAX
1.6
1.7 +#define isidx(idx) ((uint8_t)idx < 8)
1.8 +
1.9 #define isfile(file) (file >= 'a' && file <= 'h')
1.10 #define isrow(row) (row >= '1' && row <= '8')
1.11 +
1.12 #define rowidx(row) (row-'1')
1.13 #define fileidx(file) (file-'a')
1.14
1.15 +#define chkidx(move) (isidx(move->fromfile) && isidx(move->fromrow) && \
1.16 + isidx(move->tofile) && isidx(move->torow))
1.17 +
1.18 +/* secure versions - use, if index is not checked with isidx() */
1.19 +#define fileidx_s(c) (isfile(c)?fileidx(c):POS_UNSPECIFIED)
1.20 +#define rowidx_s(c) (isrow(c)?rowidx(c):POS_UNSPECIFIED)
1.21 +
1.22 void game_start(Settings *settings, int opponent);
1.23
1.24 #ifdef __cplusplus
