/*
 * Read and discard all fields of an unknown extension.
 */
static errr rd_unknown_extension(void)
{
	byte tmp8u;
	u16b tmp16u;
	s16b tmp16s;
	u32b tmp32u;
	s32b tmp32s;
	char string[1024];

	while (TRUE)
	{
		/* Read field type */
		rd_byte(&tmp8u);

		/* End mark? */
		if (tmp8u == EXTENSION_TYPE_END) break;

		/* Discard field depending on type */
		switch(tmp8u)
		{
			case EXTENSION_TYPE_U32B: rd_u32b(&tmp32u); break;
			case EXTENSION_TYPE_S32B: rd_s32b(&tmp32s); break;
			case EXTENSION_TYPE_U16B: rd_u16b(&tmp16u); break;
			case EXTENSION_TYPE_S16B: rd_s16b(&tmp16s); break;
			case EXTENSION_TYPE_STRING: rd_string(string, sizeof(string)); break;
			case EXTENSION_TYPE_BYTE: rd_byte(&tmp8u); break;
			/* Garbage? */
			default: return (-1);
		}
	}

	/* Success */
	return (0);
}

/*
 * Read a monster
 */
static void rd_monster(monster_type *m_ptr)
{
	byte tmp8u;

	/* Read the monster race */
	rd_s16b(&m_ptr->r_idx);

	/* Read the other information */
	rd_byte(&m_ptr->fy);
	rd_byte(&m_ptr->fx);
	rd_s16b(&m_ptr->hp);
	rd_s16b(&m_ptr->maxhp);
	rd_s16b(&m_ptr->csleep);
	rd_byte(&m_ptr->mspeed);
	rd_s16b(&m_ptr->energy_need);
	rd_byte(&m_ptr->hasted);
	rd_byte(&m_ptr->slowed);
	rd_byte(&m_ptr->stunned);
	rd_byte(&m_ptr->confused);
	rd_byte(&m_ptr->monfear);
	rd_byte(&m_ptr->invulner);

	rd_u32b(&m_ptr->smart);

	rd_s16b(&m_ptr->target_y);
	rd_s16b(&m_ptr->target_x);
	rd_u32b(&m_ptr->flags);

	rd_byte(&tmp8u);
}

static int rd_quests(void)
{
	int i;
	u16b tmp16u;
	
	/* Load the Quests */
	rd_u16b(&tmp16u);
	
	/* Incompatible save files */
	if (tmp16u > MAX_Q_IDX)
	{
		note(format("Too many (%u) quests!", tmp16u));
		return (-1);
	}
	
	/* Load the Quests */
	for (i = 0; i < tmp16u; i++)
	{
		byte tmp8u;
		
		rd_byte(&tmp8u);
		q_list[i].level = tmp8u;
		rd_byte(&tmp8u);
		rd_byte(&tmp8u);
		rd_byte(&tmp8u);
	}
	
	return 0;
}

static int rd_player_spells(void)
{
	int i;
	u16b tmp16u;
	
	int cnt;
	
	/* Read the number of spells */
	rd_u16b(&tmp16u);
	if (tmp16u > PY_MAX_SPELLS)
	{
		note(format("Too many player spells (%d).", tmp16u));
		return (-1);
	}
	
	/* Read the spell flags */
	for (i = 0; i < tmp16u; i++)
		rd_byte(&p_ptr->spell_flags[i]);
	
	/* Read the spell order */
	for (i = 0, cnt = 0; i < tmp16u; i++, cnt++)
		rd_byte(&p_ptr->spell_order[cnt]);
	
	/* Success */
	return (0);
}

/*
 * Read squelch and autoinscription submenu for all known objects
 */
static int rd_squelch(void)
{
	size_t i;
	byte tmp8u = 24;
	
	/* Read how many squelch bytes we have */
	rd_byte(&tmp8u);
	
	/* Check against current number */
	if (tmp8u != squelch_size)
	{
		strip_bytes(tmp8u);
	}
	else
	{
		for (i = 0; i < squelch_size; i++)
			rd_byte(&squelch_level[i]);
	}
	
	/* Handle ego-item squelch */
	if ((sf_major == 3) && (sf_minor == 0) && (sf_patch != 9))
	{
		u16b file_e_max;
		
		/* Read the number of saved ego-item */
		rd_u16b(&file_e_max);
		
		for (i = 0; i < file_e_max; i++)
		{
			if (i < z_info->e_max)
			{
				byte flags;
				
				/* Read and extract the flag */
				rd_byte(&flags);
				e_info[i].everseen |= (flags & 0x02);
			}
		}
	}
	else
	{
	}
	
	/* Read the current number of auto-inscriptions */
	rd_u16b(&inscriptions_count);
	
	/* Write the autoinscriptions array*/
	for (i = 0; i < inscriptions_count; i++)
	{
		char tmp[80];
		
		rd_s16b(&inscriptions[i].kind_idx);
		rd_string(tmp, sizeof(tmp));
		
		inscriptions[i].inscription_idx = quark_add(tmp);
	}
	
	return 0;
}

int  SPI_TFT_ILI9341::Read_ID(void){
    int r;
    r = rd_byte(0x0A);
    r = rd_byte(0x0A);
    r = rd_byte(0x0A);
    r = rd_byte(0x0A);
    return(r);
}

/*
 * Read a store
 */
static errr rd_store(int n)
{
	store_type *st_ptr = &store[n];

	int j;

	byte own, num;


	/* Read the basic info */
	rd_s32b(&st_ptr->store_open);
	rd_s16b(&st_ptr->insult_cur);
	rd_byte(&own);
	rd_byte(&num);
	rd_s16b(&st_ptr->good_buy);
	rd_s16b(&st_ptr->bad_buy);

	/* Paranoia */
	if (own >= z_info->b_max)
	{
		note("Illegal store owner!");
		return (-1);
	}

	st_ptr->owner = own;

	/* Read the items */
	for (j = 0; j < num; j++)
	{
		object_type *i_ptr;
		object_type object_type_body;

		/* Get local object */
		i_ptr = &object_type_body;

		/* Wipe the object */
		object_wipe(i_ptr);

		/* Read the item */
		if (rd_item(i_ptr))
		{
			note("Error reading item");
			return (-1);
		}

		/* Accept any valid items */
		if (st_ptr->stock_num < STORE_INVEN_MAX)
		{
			int k = st_ptr->stock_num++;

			/* Accept the item */
			object_copy(&st_ptr->stock[k], i_ptr);
		}
	}

	/* Success */
	return (0);
}

/*
 * Read an object
 *
 * This function attempts to "repair" old savefiles, and to extract
 * the most up to date values for various object fields.
 */
static errr rd_effect(void)
{

	int x_idx;
	byte type;
	u16b f_idx;
	byte y;
	byte x;
	byte countdown;
	byte repeats;
	u16b power;
	s16b source;
	u16b flags;

	x_idx = x_pop();

	/*something is wrong*/
	if (!x_idx) return (-1);

	/*Read the effect*/
	rd_byte(&type);
	rd_u16b(&f_idx);


	rd_byte(&y);
	rd_byte(&x);

	rd_byte(&countdown);

	rd_byte(&repeats);

	rd_u16b(&power);

	rd_s16b(&source);

	rd_u16b(&flags);

	/*Write it, unless it is an empty effect*/
	if (type) effect_prep(x_idx, type, f_idx, y, x, countdown, repeats, power, source, flags);

	/* Read a new field, a monster race for inscriptions */
	if (!older_than(0,4,8))
	{
		s16b r_idx;

		rd_s16b(&r_idx);

		x_list[x_idx].x_r_idx = (type ? r_idx: 0);
	}

	/* Success */
	return (0);
}

/*
 * Read a store
 */
static errr rd_store(int town_number, int store_number)
{
	store_type *st_ptr = &town[town_number].store[store_number];

	int j;

	byte num;
	s16b tmp16s;

	/* Read the basic info */
	rd_s32b(&st_ptr->store_open);
	rd_s16b(&tmp16s);
	rd_byte(&st_ptr->owner);
	rd_byte(&num);
	rd_s16b(&tmp16s);
	rd_s16b(&tmp16s);

	/* Read last visit */
	rd_s32b(&st_ptr->last_visit);

	/* Read the items */
	for (j = 0; j < num; j++)
	{
		object_type forge;
		object_type *q_ptr;

		/* Get local object */
		q_ptr = &forge;

		/* Wipe the object */
		object_wipe(q_ptr);

		/* Read the item */
		rd_item(q_ptr);

		/* Acquire valid items */
		if (st_ptr->stock_num < (store_number == STORE_HOME ? (STORE_INVEN_MAX) * 10 : STORE_INVEN_MAX))
		{
			int k = st_ptr->stock_num;

			if (q_ptr->k_idx != 0)
			{
				/* Acquire the item */
				object_copy(&st_ptr->stock[k], q_ptr);
				st_ptr->stock_num++;
			}
		}
	}

	/* Success */
	return (0);
}

/*
 * Hack -- strip some bytes
 */
static void strip_bytes(int n)
{
	byte tmp8u;

	/* Strip the bytes */
	while (n--) rd_byte(&tmp8u);
}

static int rd_history(void)
{
	u32b tmp32u;
	size_t i;
	
	history_clear();
	
	rd_u32b(&tmp32u);
	for (i = 0; i < tmp32u; i++)
	{
		s32b turn;
		s16b dlev, clev;
		u16b type;
		byte art_name;
		char text[80];
		
		rd_u16b(&type);
		rd_s32b(&turn);
		rd_s16b(&dlev);
		rd_s16b(&clev);
		rd_byte(&art_name);
		rd_string(text, sizeof(text));
		
		history_add_full(type, art_name, dlev, clev, turn, text);
	}

	return 0;
}

static int rd_object_memory(void)
{
	int i;
	u16b tmp16u;
	
	/* Object Memory */
	rd_u16b(&tmp16u);
	
	/* Incompatible save files */
	if (tmp16u > z_info->k_max)
	{
		note(format("Too many (%u) object kinds!", tmp16u));
		return (-1);
	}
	
	/* Read the object memory */
	for (i = 0; i < tmp16u; i++)
	{
		byte tmp8u;
		object_kind *k_ptr = &k_info[i];
		
		rd_byte(&tmp8u);
		
		k_ptr->aware = (tmp8u & 0x01) ? TRUE : FALSE;
		k_ptr->tried = (tmp8u & 0x02) ? TRUE : FALSE;
		k_ptr->everseen = (tmp8u & 0x08) ? TRUE : FALSE;

		if (tmp8u & 0x04) kind_squelch_when_aware(k_ptr);
		if (tmp8u & 0x10) kind_squelch_when_unaware(k_ptr);
	}
	
	return 0;
}

/*
 * Read artifact lore
 */
static errr rd_artifact_lore(int a_idx)
{
	byte tmp8u;

	/* Read flags */
	rd_byte(&tmp8u);

	/* The artifact was fully identified */
	a_l_list[a_idx].was_fully_identified = ((tmp8u & 0x01) != 0);

	/* For future use */
	rd_byte(&tmp8u);
	rd_byte(&tmp8u);
	rd_byte(&tmp8u);

	return (0);
}

/*
 * Save quick start data
 */
static void load_quick_start(void)
{
	byte tmp8u;
	int i;

	rd_byte(&previous_char.psex);
	rd_byte(&previous_char.prace);
	rd_byte(&previous_char.pclass);
	rd_byte(&previous_char.realm1);
	rd_byte(&previous_char.realm2);

	rd_s16b(&previous_char.age);
	rd_s16b(&previous_char.ht);
	rd_s16b(&previous_char.wt);
	rd_s16b(&previous_char.sc);
	rd_s32b(&previous_char.au);

	for (i = 0; i < 6; i++) rd_s16b(&previous_char.stat_max[i]);

	for (i = 0; i < PY_MAX_LEVEL; i++) rd_s16b(&previous_char.player_hp[i]);

	rd_s16b(&previous_char.valar_patron);

	for (i = 0; i < 4; i++) rd_string(previous_char.history[i], sizeof(previous_char.history[i]));

	rd_byte(&previous_char.quests);

	rd_byte(&tmp8u);
	previous_char.quick_ok = (bool)tmp8u;
}

/*
 * Hack -- read a string
 */
static void rd_string(char *str, int max)
{
	int i;

	/* Read the string */
	for (i = 0; TRUE; i++)
	{
		byte tmp8u;

		/* Read a byte */
		rd_byte(&tmp8u);

		/* Collect string while legal */
		if (i < max) str[i] = tmp8u;

		/* End of string */
		if (!tmp8u) break;
	}

	/* Terminate */
	str[max-1] = '\0';


#ifdef JP
	/* Convert Kanji code */
	switch (kanji_code)
	{
#ifdef SJIS
	case 2:
		/* EUC to SJIS */
		euc2sjis(str);
		break;
#endif

#ifdef EUC
	case 3:
		/* SJIS to EUC */
		sjis2euc(str);
		break;
#endif

	case 0:
	{
		/* 不明の漢字コードからシステムの漢字コードに変換 */
		byte code = codeconv(str);

		/* 漢字コードが判明したら、それを記録 */
		if (code) kanji_code = code;

		break;
	}
	default:
		/* No conversion needed */
		break;
	}
#endif
}

/**
 * Read a trap record
 */
static void rd_trap(struct trap *trap)
{
    int i;
	char buf[80];

	rd_string(buf, sizeof(buf));
	if (buf[0]) {
		trap->kind = lookup_trap(buf);
		trap->t_idx = trap->kind->tidx;
	}
    rd_byte(&trap->fy);
    rd_byte(&trap->fx);
    rd_byte(&trap->power);
    rd_byte(&trap->timeout);

    for (i = 0; i < trf_size; i++)
		rd_byte(&trap->flags[i]);
}

static int rd_misc(void)
{
	byte tmp8u;
	
	/* Read the randart version */
	rd_u32b(&randart_version);

	/* Read the randart seed */
	rd_u32b(&seed_randart);

	/* Skip the flags */
	strip_bytes(12);


	/* Hack -- the two "special seeds" */
	rd_u32b(&seed_flavor);
	rd_u32b(&seed_town);


	/* Special stuff */
	rd_u16b(&p_ptr->panic_save);
	rd_u16b(&p_ptr->total_winner);
	rd_u16b(&p_ptr->noscore);


	/* Read "death" */
	rd_byte(&tmp8u);
	p_ptr->is_dead = tmp8u;

	/* Read "feeling" */
	rd_byte(&tmp8u);
	feeling = tmp8u;

	/* Turn of last "feeling" */
	rd_s32b(&old_turn);

	/* Current turn */
	rd_s32b(&turn);

	return 0;
}

void rd_string(char *str, int max)
{
	byte tmp8u;
	int i = 0;

	do {
		rd_byte(&tmp8u);

		if (i < max) str[i] = tmp8u;
		if (!tmp8u) break;
	} while (++i);

	str[max - 1] = '\0';
}

/**
 * Read options.
 */
int rd_options(void)
{
	byte b;

	u16b tmp16u;

	/*** Special info */

	/* Read "delay_factor" */
	rd_byte(&b);
	player->opts.delay_factor = b;

	/* Read "hitpoint_warn" */
	rd_byte(&b);
	player->opts.hitpoint_warn = b;

	/* Read lazy movement delay */
	rd_u16b(&tmp16u);
	player->opts.lazymove_delay = (tmp16u < 1000) ? tmp16u : 0;


	/* Read options */
	while (1) {
		byte value;
		char name[40];
		rd_string(name, sizeof name);

		if (!name[0])
			break;

		rd_byte(&value);
		option_set(name, !!value);
	}

	return 0;
}

/**
 * Read monster memory.
 */
int rd_monster_memory(void)
{
	u16b tmp16u;
	char buf[128];
	int i;

	/* Monster temporary flags */
	rd_byte(&mflag_size);

	/* Incompatible save files */
	if (mflag_size > MFLAG_SIZE) {
	        note(format("Too many (%u) monster temporary flags!", mflag_size));
		return (-1);
	}

	/* Reset maximum numbers per level */
	for (i = 1; z_info && i < z_info->r_max; i++) {
		struct monster_race *race = &r_info[i];
		race->max_num = 100;
		if (rf_has(race->flags, RF_UNIQUE))
			race->max_num = 1;
	}

	rd_string(buf, sizeof(buf));
	while (!streq(buf, "No more monsters")) {
		struct monster_race *race = lookup_monster(buf);

		/* Get the kill count, skip if monster invalid */
		rd_u16b(&tmp16u);
		if (!race) continue;

		/* Store the kill count, ensure dead uniques stay dead */
		l_list[race->ridx].pkills = tmp16u;
		if (rf_has(race->flags, RF_UNIQUE) && tmp16u)
			race->max_num = 0;

		/* Look for the next monster */
		rd_string(buf, sizeof(buf));
	}

	return 0;
}