/* vi: set ts=2:
 +-------------------+  Christian Schlittchen <corwin@amber.kn-bremen.de>
 |                   |  Enno Rehling <enno@eressea.de>
 | Eressea PBEM host |  Katja Zedel <katze@felidae.kn-bremen.de>
 | (c) 1998 - 2003   |  Henning Peters <faroul@beyond.kn-bremen.de>
 |                   |  Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>
 +-------------------+  Stefan Reich <reich@halbling.de>

 This program may not be used, modified or distributed
 without prior permission by the authors of Eressea.
 */

#ifndef H_KRNL_SKILL
#define H_KRNL_SKILL
#ifdef __cplusplus
extern "C" {
#endif

extern signed char skill_bonus(struct unit * u, struct region * r);

/* skillmod_data::flags -- wann gilt der modifier? */
#define SMF_ALWAYS     (1<<0) /* immer */
#define SMF_PRODUCTION (1<<1) /* für Produktion - am gebäude, an der einheit */
#define SMF_RIDING     (1<<2) /* Bonus für berittene - an der rasse*/

typedef struct skill {
	unsigned char id;
	unsigned int level : 8;
	unsigned int weeks : 8;
	unsigned int old : 8;
} skill;

typedef int (*skillmod_fun)(const struct unit*, const struct region*, skill_t, int);
typedef struct skillmod_data {
	skill_t skill;
	skillmod_fun special;
	double multiplier;
	int number;
	int bonus;
	int flags;
} skillmod_data;
extern struct attrib_type at_skillmod;
extern int rc_skillmod(const struct race * rc, const struct region *r, skill_t sk);
extern int skillmod(const struct attrib * a, const struct unit * u, const struct region * r, skill_t sk, int value, int flags);
extern struct attrib * make_skillmod(skill_t sk, unsigned int flags, skillmod_fun special, double multiplier, int bonus);

extern const char * skillname(skill_t, const struct locale *);
extern skill_t sk_find(const char * name);
extern void enable_skill(const char * name, boolean value);
extern int level_days(int level);
extern int level(int days);

#define skill_level(level) (level)
extern void reduce_skill(struct unit *u, skill * sv, unsigned int change);
extern int skill_weeks(int level);
extern int skill_compare(const skill * sk, const skill * sc);

extern void sk_set(skill * sv, int level);

extern const char *skillnames[];
extern boolean skill_enabled[];

#ifdef __cplusplus
}
#endif
#endif