#include "direction.h"
#include <stdbool.h>

#ifndef H_KRNL_MOVEMENT
#define H_KRNL_MOVEMENT

#ifdef __cplusplus
extern "C" {
#endif

    struct attrib_type;
    struct building_type;
    struct locale;
    struct order;
    struct region;
    struct region_list;
    struct ship;
    struct unit;

    extern struct attrib_type at_shiptrail;
    extern int *storms;

    /* Bewegungsweiten: */
#define BP_WALKING 4
#define BP_RIDING  6
#define BP_UNICORN 9
#define BP_DRAGON  4
#define BP_NORMAL 3
#define BP_ROAD   2

    /* die Zahlen sind genau aequivalent zu den race Flags */
#define MV_CANNOTMOVE     (1<<5)
#define MV_FLY            (1<<7)        /* kann fliegen */
#define MV_SWIM           (1<<8)        /* kann schwimmen */
#define MV_WALK           (1<<9)        /* kann ueber Land gehen */

#define HORSES_PER_CART    2 /* number of horses for a cart */
#define STRENGTHMULTIPLIER  50   /* multiplier for trollbelt */

    /* ein mensch wiegt 10, traegt also 5, ein pferd wiegt 50, traegt also 20. ein
    ** wagen wird von zwei pferden gezogen und traegt total 140, davon 40 die
    ** pferde, macht nur noch 100, aber samt eigenem gewicht (40) macht also 140. */

    /* movewhere error codes */
    enum {
        E_MOVE_OK = 0,              /* possible to move */
        E_MOVE_NOREGION,            /* no region exists in this direction */
        E_MOVE_BLOCKED              /* cannot see this region, there is a blocking connection. */
    };
    int movewhere(const struct unit *u, const char *token,
    struct region *r, struct region **resultp);
    direction_t reldirection(const struct region *from, const struct region *to);

    int personcapacity(const struct unit *u);
    void movement(void);
    int enoughsailors(const struct ship *sh, int sumskill);
    bool canswim(struct unit *u);
    bool canfly(struct unit *u);
    void leave_trail(struct ship *sh, struct region *from,
                            struct region_list *route);
    void move_ship(struct ship *sh, struct region *from,
    struct region *to, struct region_list *route);
    int walkingcapacity(const struct unit *u);
    int movement_speed(const struct unit * u);
    void follow_unit(struct unit *u);
    struct unit *owner_buildingtyp(const struct region *r,
        const struct building_type *bt);
    bool move_blocked(const struct unit *u, const struct region *src,
        const struct region *dest);
    bool can_takeoff(const struct ship * sh, const struct region * from, const struct region * to);
    void move_cmd(struct unit * u, struct order * ord);
    int follow_ship(struct unit * u, struct order * ord);

#define SA_HARBOUR 1
#define SA_COAST 0
#define SA_NO_INSECT -1
#define SA_NO_COAST -2

    int check_ship_allowed(struct ship *sh, const struct region * r);
    direction_t drift_target(struct ship *sh);
    struct order * cycle_route(struct order * ord, const struct locale *lang, int gereist);
    struct order * make_movement_order(const struct locale *lang, direction_t steps[], int length);
#ifdef __cplusplus
}
#endif
#endif