#include <stdlib.h>

#include "obj.h"
#include "vars.h"
#include "util.h"
#include "pline.h"
#include "format.h"
#include "structs.h"
#include "objtypes.h"

typedef struct armor ARMOR;

struct armor {
  unsigned int flags;
#define AF_KNOWN 0x00000001
  int bonus;
  } ;

static ARMOR *armor_for_obj(OBJ *o)
{
 if (objtypes[o->type].class != OC_ARMOR) panic("non-armor where armor needed");
 return(o->private);
}

static OBJ *new(int type __attribute__((__unused__)), OBJ *o)
{
 ARMOR *a;

 a = malloc(sizeof(ARMOR));
 a->flags = 0;
 a->bonus = 0;
 o->private = a;
 return(o);
}

static void old(OBJ *o)
{
 free(o->private);
}

static int cond(char ch, INVOBJ *io)
{
 switch (ch)
  { case 'K':
       return(armor_for_obj(io->v[0])->flags&AF_KNOWN);
       break;
  }
 panic("invalid conditional +%c for armor",ch);
}

static void spec(FILE *f, char ch, INVOBJ *io)
{
 switch (ch)
  { case 'P':
       fprintf(f,"%+d",armor_for_obj(io->v[0])->bonus);
       break;
    default:
       panic("invalid format %%+%c for armor",ch);
       break;
  }
}

static int identified(INVOBJ *io)
{
 return(armor_for_obj(io->v[0])->flags & AF_KNOWN);
}

static INVOBJ *identify(INVOBJ *io)
{
 armor_for_obj(io->v[0])->flags |= AF_KNOWN;
 return(io);
}

OBJOPS objops_armor = { &new, &old,
			&std_format, &cond, &spec,
			&never_collapsible, &never_identical,
			&std_split,
			&identified, &identify };