hamster.h

来自「数据挖掘中de一个算法 hamster的实例」· C头文件 代码 · 共 64 行

/*----------------------------------------------------------------------
  File    : hamster.h
  Contents: hamster control functions
  Author  : Christian Borgelt
  History : 14.10.1997 file created
            16.10.1997 first version completed
            18.10.1997 type HAMSTER made opaque
            21.10.1997 definitions of maximal maze extensions added
            15.01.1998 definitioan of maximal size of corn heap added
----------------------------------------------------------------------*/
#ifndef __HAMSTER__
#define __HAMSTER__

/*----------------------------------------------------------------------
  Preprocessor Definitions
----------------------------------------------------------------------*/
#define HMS_MAXXEXT   64        /* maximal x-extension of maze */
#define HMS_MAXYEXT   64        /* maximal y-extension of maze */
#define HMS_MAXCORN  255        /* maximal size of corn heap */
#define HMS_MAXLOAD   12        /* maximal load of corn in cheeks */

/* --- results of hms_dir() --- */
#define HMS_EAST       0        /* hamster is looking east */
#define HMS_NORTH      1        /* hamster is looking north */
#define HMS_WEST       2        /* hamster is looking west */
#define HMS_SOUTH      3        /* hamster is looking south */

/* --- results of hms_look() --- */
#define HMS_EMPTY      0        /* there is an empty field ahead */
#define HMS_CORN       1        /* there is a field with corn ahead */
#define HMS_WALL       2        /* there is a wall ahead */

/* --- parameters of hms_turn() --- */
#define HMS_POS        1        /* positive turn (counterclockwise) */
#define HMS_NEG       -1        /* negative turn (clockwise) */
#define HMS_LEFT       1        /* left     turn (counterclockwise) */
#define HMS_RIGHT     -1        /* right    turn (clockwise) */

/*----------------------------------------------------------------------
  Type Definitions
----------------------------------------------------------------------*/
typedef struct hamster HAMSTER; /* a hamster */

/*----------------------------------------------------------------------
  Functions
----------------------------------------------------------------------*/
/* --- enquiries --- */
extern void hms_pos  (HAMSTER *hms, int *x, int *y);
extern int  hms_dir  (HAMSTER *hms);
extern int  hms_look (HAMSTER *hms);
extern int  hms_corn (HAMSTER *hms);
extern int  hms_load (HAMSTER *hms);

/* --- actions --- */
extern int  hms_move (HAMSTER *hms);
extern void hms_turn (HAMSTER *hms, int turn);
extern int  hms_take (HAMSTER *hms, int amount);
extern int  hms_drop (HAMSTER *hms, int amount);

/* --- function to be provided by user --- */
extern void hms_ctrl (HAMSTER *hms);

#endif