/*
 * File: save.c
 * Purpose: Old-style savefile saving
 *
 * Copyright (c) 1997 Ben Harrison
 *
 * This work is free software; you can redistribute it and/or modify it
 * under the terms of either:
 *
 * a) the GNU General Public License as published by the Free Software
 *    Foundation, version 2, or
 *
 * b) the "Angband licence":
 *    This software may be copied and distributed for educational, research,
 *    and not for profit purposes provided that this copyright and statement
 *    are included in all such copies.  Other copyrights may also apply.
 */
#include "angband.h"
#include "option.h"
#include "savefile.h"


/*
 * Write an "item" record
 */
static void wr_item(const object_type *o_ptr)
{
	wr_u16b(0xffff);
	wr_byte(ITEM_VERSION);

	wr_s16b(o_ptr->k_idx);

	/* Location */
	wr_byte(o_ptr->iy);
	wr_byte(o_ptr->ix);

	wr_byte(o_ptr->tval);
	wr_byte(o_ptr->sval);
	wr_s16b(o_ptr->pval);
	wr_s16b(o_ptr->p2val);

	wr_byte(0);

	wr_byte(o_ptr->number);
	wr_s16b(o_ptr->weight);

	wr_byte(o_ptr->name1);
	wr_byte(o_ptr->name2);

	wr_s16b(o_ptr->timeout);

	wr_s16b(o_ptr->to_h);
	wr_s16b(o_ptr->to_d);
	wr_s16b(o_ptr->to_a);
	wr_s16b(o_ptr->ac);
	wr_byte(o_ptr->dd);
	wr_byte(o_ptr->ds);

	wr_u16b(o_ptr->ident);

	wr_byte(o_ptr->marked);

	wr_byte(o_ptr->origin);
	wr_s16b(o_ptr->origin_depth); /* Was byte */
	wr_u16b(o_ptr->origin_xtra);

	wr_u32b(o_ptr->flags[0]);
	wr_u32b(o_ptr->flags[1]);
	wr_u32b(o_ptr->flags[2]);
	wr_u32b(o_ptr->flags[3]);

	wr_u32b(o_ptr->known_flags[0]);
	wr_u32b(o_ptr->known_flags[1]);
	wr_u32b(o_ptr->known_flags[2]);
	wr_u32b(o_ptr->known_flags[3]);

	/* Held by monster index */
	wr_s16b(o_ptr->held_m_idx);

	/* Save the inscription (if any) */
	if (o_ptr->note)
	{
		wr_string(quark_str(o_ptr->note));
	}
	else
	{
		wr_string("");
	}
}


/*
 * Write RNG state
 */
void wr_randomizer(void)
{
	int i;

	wr_u16b(0);
	wr_u16b(Rand_place);
	for (i = 0; i < RAND_DEG; i++)
		wr_u32b(Rand_state[i]);
}


/*
 * Write the "options"
 */
void wr_options(void)
{
	int i, k;

	u32b flag[8];
	u32b mask[8];
	u32b window_flag[ANGBAND_TERM_MAX];
	u32b window_mask[ANGBAND_TERM_MAX];


	/* XXX */
	for (i = 0; i < 4; i++) wr_u32b(0L);


	/*** Special Options ***/

	wr_byte(op_ptr->delay_factor);
	wr_byte(op_ptr->hitpoint_warn);
	wr_u16b(lazymove_delay);


	/*** Normal options ***/

	/* Reset */
	for (i = 0; i < 8; i++)
	{
		flag[i] = 0L;
		mask[i] = 0L;
	}

	/* Analyze the options */
	for (i = 0; i < OPT_MAX; i++)
	{
		int os = i / 32;
		int ob = i % 32;

		/* Process real entries */
		if (!option_name(i)) continue;

		/* Set flag */
		if (op_ptr->opt[i])
			flag[os] |= (1L << ob);

		/* Set mask */
		mask[os] |= (1L << ob);
	}

	/* Dump the flags */
	for (i = 0; i < 8; i++) wr_u32b(flag[i]);

	/* Dump the masks */
	for (i = 0; i < 8; i++) wr_u32b(mask[i]);


	/*** Window options ***/

	/* Reset */
	for (i = 0; i < ANGBAND_TERM_MAX; i++)
	{
		/* Flags */
		window_flag[i] = op_ptr->window_flag[i];

		/* Mask */
		window_mask[i] = 0L;

		/* Build the mask */
		for (k = 0; k < 32; k++)
		{
			/* Set mask */
			if (window_flag_desc[k])
			{
				window_mask[i] |= (1L << k);
			}
		}
	}

	/* Dump the flags */
	for (i = 0; i < ANGBAND_TERM_MAX; i++) wr_u32b(window_flag[i]);

	/* Dump the masks */
	for (i = 0; i < ANGBAND_TERM_MAX; i++) wr_u32b(window_mask[i]);
}


void wr_messages(void)
{
	s32b i;
	u32b num;
	
	num = messages_num();
	if (num > 80) num = 80;
	wr_u32b(num);
	
	/* Dump the messages (oldest first!) */
	for (i = num - 1; i >= 0; i--)
	{
		wr_string(message_str(i));
		wr_u16b(message_type(i));
	}	
}


void wr_monster_memory(void)
{
	int i, r_idx;
	
	wr_u16b(z_info->r_max);
	for (r_idx = 0; r_idx < z_info->r_max; r_idx++)
	{
		monster_race *r_ptr = &r_info[r_idx];
		monster_lore *l_ptr = &l_list[r_idx];
		
		/* Count sights/deaths/kills */
		wr_s16b(l_ptr->sights);
		wr_s16b(l_ptr->deaths);
		wr_s16b(l_ptr->pkills);
		wr_s16b(l_ptr->tkills);
		
		/* Count wakes and ignores */
		wr_byte(l_ptr->wake);
		wr_byte(l_ptr->ignore);
		
		/* Count drops */
		wr_byte(l_ptr->drop_gold);
		wr_byte(l_ptr->drop_item);
		
		/* Count spells */
		wr_byte(l_ptr->cast_innate);
		wr_byte(l_ptr->cast_spell);
		
		/* Count blows of each type */
		for (i = 0; i < MONSTER_BLOW_MAX; i++)
			wr_byte(l_ptr->blows[i]);
		
		/* Memorize flags */
		for (i = 0; i < RACE_FLAG_STRICT_UB; i++)
			wr_u32b(l_ptr->flags[i]);
		for (i = 0; i < RACE_FLAG_SPELL_STRICT_UB; i++)
			wr_u32b(l_ptr->spell_flags[i]);
		
		/* Monster limit per level */
		wr_byte(r_ptr->max_num);
		
		/* XXX */
		wr_byte(0);
		wr_byte(0);
		wr_byte(0);		
	}
}


void wr_object_memory(void)
{
	int k_idx;
	
	wr_u16b(z_info->k_max);
	for (k_idx = 0; k_idx < z_info->k_max; k_idx++)
	{
		byte tmp8u = 0;
		object_kind *k_ptr = &k_info[k_idx];
		
		if (k_ptr->aware) tmp8u |= 0x01;
		if (k_ptr->tried) tmp8u |= 0x02;
		if (k_ptr->squelch) tmp8u |= 0x04;
		if (k_ptr->everseen) tmp8u |= 0x08;
		
		wr_byte(tmp8u);
	}
}


void wr_quests(void)
{
	int i;
	u16b tmp16u;
	
	/* Hack -- Dump the quests */
	tmp16u = MAX_Q_IDX;
	wr_u16b(tmp16u);
	for (i = 0; i < tmp16u; i++)
	{
		wr_byte(q_list[i].level);
		wr_byte(0);
		wr_byte(0);
		wr_byte(0);
	}
}


void wr_artifacts(void)
{
	int i;
	u16b tmp16u;
	
	/* Hack -- Dump the artifacts */
	tmp16u = z_info->a_max;
	wr_u16b(tmp16u);
	for (i = 0; i < tmp16u; i++)
	{
		artifact_type *a_ptr = &a_info[i];
		wr_byte(a_ptr->cur_num);
		wr_byte(0);
		wr_byte(0);
		wr_byte(0);
	}
}


void wr_player(void)
{
	int i;
	
	wr_string(op_ptr->full_name);
	
	wr_string(p_ptr->died_from);
	
	wr_string(p_ptr->history);
	
	/* Race/Class/Gender/Spells */
	wr_byte(p_ptr->prace);
	wr_byte(p_ptr->pclass);
	wr_byte(p_ptr->psex);
	wr_byte(0);	/* oops */
	
	wr_byte(p_ptr->hitdie);
	wr_s16b(p_ptr->expfact);
	
	wr_s16b(p_ptr->age);
	wr_s16b(p_ptr->ht);
	wr_s16b(p_ptr->wt);
	
	/* Dump the stats (maximum and current and birth) */
	for (i = 0; i < A_MAX; ++i) wr_s16b(p_ptr->stat_max[i]);
	for (i = 0; i < A_MAX; ++i) wr_s16b(p_ptr->stat_cur[i]);
	for (i = 0; i < A_MAX; ++i) wr_s16b(p_ptr->stat_birth[i]);
	
	wr_s16b(p_ptr->ht_birth);
	wr_s16b(p_ptr->wt_birth);
	wr_s16b(p_ptr->sc_birth);
	wr_u32b(p_ptr->au_birth);
	
	/* Padding */
	wr_u32b(0);
	
	wr_u32b(p_ptr->au);
	
	
	wr_u32b(p_ptr->max_exp);
	wr_u32b(p_ptr->exp);
	wr_u16b(p_ptr->exp_frac);
	wr_s16b(p_ptr->lev);
	
	wr_s16b(p_ptr->mhp);
	wr_s16b(p_ptr->chp);
	wr_u16b(p_ptr->chp_frac);
	
	wr_s16b(p_ptr->msp);
	wr_s16b(p_ptr->csp);
	wr_u16b(p_ptr->csp_frac);
	
	/* Max Player and Dungeon Levels */
	wr_s16b(p_ptr->max_lev);
	wr_s16b(p_ptr->max_depth);
	
	/* More info */
	wr_s16b(0);	/* oops */
	wr_s16b(0);	/* oops */
	wr_s16b(0);	/* oops */
	wr_s16b(0);	/* oops */
	wr_s16b(p_ptr->sc);
	wr_s16b(0);	/* oops */
	
	wr_s16b(p_ptr->food);
	wr_s16b(p_ptr->energy);
	wr_s16b(p_ptr->word_recall);
	wr_s16b(p_ptr->state.see_infra);
	wr_byte(p_ptr->confusing);
	wr_byte(p_ptr->searching);
	
	/* Find the number of timed effects */
	wr_byte(TMD_MAX);
	
	/* Read all the effects, in a loop */
	for (i = 0; i < TMD_MAX; i++)
		wr_s16b(p_ptr->timed[i]);
	
	/* Future use */
	for (i = 0; i < 10; i++) wr_u32b(0L);
}


void wr_squelch(void)
{
	int i;
	
	/* Write number of squelch bytes */
	wr_byte(SQUELCH_BYTES);
	for (i = 0; i < SQUELCH_BYTES; i++)
		wr_byte(squelch_level[i]);
	
	/* Write ego-item squelch bits */
	wr_u16b(z_info->e_max);
	for (i = 0; i < z_info->e_max; i++)
	{
		byte flags = 0;
		
		/* Figure out and write the everseen flag */
		if (e_info[i].everseen) flags |= 0x02;
		wr_byte(flags);
	}
	
	/* Write the current number of auto-inscriptions */
	wr_u16b(inscriptions_count);
	
	/* Write the autoinscriptions array */
	for (i = 0; i < inscriptions_count; i++)
	{
		wr_s16b(inscriptions[i].kind_idx);
		wr_string(quark_str(inscriptions[i].inscription_idx));
	}
	
	return;
}


void wr_misc(void)
{

	/* Random artifact version */
	wr_u32b(RANDART_VERSION);
	
	/* Random artifact seed */
	wr_u32b(seed_randart);
	
	
	/* XXX Ignore some flags */
	wr_u32b(0L);
	wr_u32b(0L);
	wr_u32b(0L);
	
	
	/* Write the "object seeds" */
	wr_u32b(seed_flavor);
	wr_u32b(seed_town);
	
	
	/* Special stuff */
	wr_u16b(p_ptr->panic_save);
	wr_u16b(p_ptr->total_winner);
	wr_u16b(p_ptr->noscore);
	
	
	/* Write death */
	wr_byte(p_ptr->is_dead);
	
	/* Write feeling */
	wr_byte(feeling);
	
	/* Turn of last "feeling" */
	wr_s32b(old_turn);
	
	/* Current turn */
	wr_s32b(turn);	
}


void wr_player_hp(void)
{
	int i;

	wr_u16b(PY_MAX_LEVEL);
	for (i = 0; i < PY_MAX_LEVEL; i++)
		wr_s16b(p_ptr->player_hp[i]);
}


void wr_player_spells(void)
{	
	int i;

	wr_u16b(PY_MAX_SPELLS);

	for (i = 0; i < PY_MAX_SPELLS; i++)
		wr_byte(p_ptr->spell_flags[i]);
	
	for (i = 0; i < PY_MAX_SPELLS; i++)
		wr_byte(p_ptr->spell_order[i]);
}


/*
 * Dump the random artifacts
 */
void wr_randarts(void)
{
	int i;

	if (!OPT(adult_randarts)) 
		return;

	wr_u16b(z_info->a_max);
	
	for (i = 0; i < z_info->a_max; i++)
	{
		artifact_type *a_ptr = &a_info[i];
		
		wr_byte(a_ptr->tval);
		wr_byte(a_ptr->sval);
		wr_s16b(a_ptr->pval);
		wr_s16b(a_ptr->p2val);
		
		wr_s16b(a_ptr->to_h);
		wr_s16b(a_ptr->to_d);
		wr_s16b(a_ptr->to_a);
		wr_s16b(a_ptr->ac);
		
		wr_byte(a_ptr->dd);
		wr_byte(a_ptr->ds);
		
		wr_s16b(a_ptr->weight);
		
		wr_s32b(a_ptr->cost);
		
		wr_u32b(a_ptr->flags[0]);
		wr_u32b(a_ptr->flags[1]);
		wr_u32b(a_ptr->flags[2]);
		wr_u32b(a_ptr->flags[3]);
		
		wr_byte(a_ptr->level);
		wr_byte(a_ptr->rarity);
		
		wr_u16b(a_ptr->effect);
		wr_u16b(a_ptr->time_base);
		wr_u16b(a_ptr->time_dice);
		wr_u16b(a_ptr->time_sides);
	}
}


void wr_inventory(void)
{
	int i;
	
	/* Write the inventory */
	for (i = 0; i < INVEN_TOTAL; i++)
	{
		object_type *o_ptr = &inventory[i];
		
		/* Skip non-objects */
		if (!o_ptr->k_idx) continue;
		
		/* Dump index */
		wr_u16b((u16b)i);
		
		/* Dump object */
		wr_item(o_ptr);
	}
	
	/* Add a sentinel */
	wr_u16b(0xFFFF);
}


void wr_stores(void)
{
	int i;
	
	wr_u16b(MAX_STORES);
	for (i = 0; i < MAX_STORES; i++)
	{
		const store_type *st_ptr = &store[i];
		int j;
		
		/* XXX Old values */
		wr_u32b(0L);
		wr_s16b(0);
		
		/* Save the current owner */
		wr_byte(st_ptr->owner);
		
		/* Save the stock size */
		wr_byte(st_ptr->stock_num);
		
		/* XXX Old values */
		wr_s16b(0);
		wr_s16b(0);
		
		/* Save the stock */
		for (j = 0; j < st_ptr->stock_num; j++)
			wr_item(&st_ptr->stock[j]);
	}
}



/*
 * The cave grid flags that get saved in the savefile
 */
#define IMPORTANT_FLAGS (CAVE_MARK | CAVE_GLOW | CAVE_ICKY | CAVE_ROOM)


/*
 * Write the current dungeon
 */
void wr_dungeon(void)
{
	int y, x;

	byte tmp8u;

	byte count;
	byte prev_char;


	if (p_ptr->is_dead)
		return;

	/*** Basic info ***/

	/* Dungeon specific info follows */
	wr_u16b(p_ptr->depth);
	wr_u16b(0);
	wr_u16b(p_ptr->py);
	wr_u16b(p_ptr->px);
	wr_u16b(DUNGEON_HGT);
	wr_u16b(DUNGEON_WID);
	wr_u16b(0);
	wr_u16b(0);


	/*** Simple "Run-Length-Encoding" of cave ***/

	/* Note that this will induce two wasted bytes */
	count = 0;
	prev_char = 0;

	/* Dump the cave */
	for (y = 0; y < DUNGEON_HGT; y++)
	{
		for (x = 0; x < DUNGEON_WID; x++)
		{
			/* Extract the important cave_info flags */
			tmp8u = (cave_info[y][x] & (IMPORTANT_FLAGS));

			/* If the run is broken, or too full, flush it */
			if ((tmp8u != prev_char) || (count == MAX_UCHAR))
			{
				wr_byte((byte)count);
				wr_byte((byte)prev_char);
				prev_char = tmp8u;
				count = 1;
			}

			/* Continue the run */
			else
			{
				count++;
			}
		}
	}

	/* Flush the data (if any) */
	if (count)
	{
		wr_byte((byte)count);
		wr_byte((byte)prev_char);
	}

	/** Now dump the cave_info2[][] stuff **/

	/* Note that this will induce two wasted bytes */
	count = 0;
	prev_char = 0;

	/* Dump the cave */
	for (y = 0; y < DUNGEON_HGT; y++)
	{
		for (x = 0; x < DUNGEON_WID; x++)
		{
			/* Keep all the information from info2 */
			tmp8u = cave_info2[y][x];

			/* If the run is broken, or too full, flush it */
			if ((tmp8u != prev_char) || (count == MAX_UCHAR))
			{
				wr_byte((byte)count);
				wr_byte((byte)prev_char);
				prev_char = tmp8u;
				count = 1;
			}

			/* Continue the run */
			else
			{
				count++;
			}
		}
	}

	/* Flush the data (if any) */
	if (count)
	{
		wr_byte((byte)count);
		wr_byte((byte)prev_char);
	}


	/*** Simple "Run-Length-Encoding" of cave ***/

	/* Note that this will induce two wasted bytes */
	count = 0;
	prev_char = 0;

	/* Dump the cave */
	for (y = 0; y < DUNGEON_HGT; y++)
	{
		for (x = 0; x < DUNGEON_WID; x++)
		{
			/* Extract a byte */
			tmp8u = cave_feat[y][x];

			/* If the run is broken, or too full, flush it */
			if ((tmp8u != prev_char) || (count == MAX_UCHAR))
			{
				wr_byte((byte)count);
				wr_byte((byte)prev_char);
				prev_char = tmp8u;
				count = 1;
			}

			/* Continue the run */
			else
			{
				count++;
			}
		}
	}

	/* Flush the data (if any) */
	if (count)
	{
		wr_byte((byte)count);
		wr_byte((byte)prev_char);
	}


	/*** Compact ***/

	/* Compact the objects */
	compact_objects(0);

	/* Compact the monsters */
	compact_monsters(0);
}


void wr_objects(void)
{
	int i;

	if (p_ptr->is_dead)
		return;
	
	/* Total objects */
	wr_u16b(o_max);

	/* Dump the objects */
	for (i = 1; i < o_max; i++)
	{
		object_type *o_ptr = &o_list[i];

		/* Dump it */
		wr_item(o_ptr);
	}
}


void wr_monsters(void)
{
	int i;

	if (p_ptr->is_dead)
		return;

	/* Total monsters */
	wr_u16b(mon_max);

	/* Dump the monsters */
	for (i = 1; i < mon_max; i++)
	{
		const monster_type *m_ptr = &mon_list[i];

		wr_s16b(m_ptr->r_idx);
		wr_byte(m_ptr->fy);
		wr_byte(m_ptr->fx);
		wr_s16b(m_ptr->hp);
		wr_s16b(m_ptr->maxhp);
		wr_s16b(m_ptr->csleep);
		wr_byte(m_ptr->mspeed);
		wr_byte(m_ptr->energy);
		wr_byte(m_ptr->stunned);
		wr_byte(m_ptr->confused);
		wr_byte(m_ptr->monfear);
		wr_byte(0);
	}
}


void wr_ghost(void)
{
	int i;

	if (p_ptr->is_dead)
		return;

	/* XXX */
	
	/* Name */
	wr_string("Broken Ghost");
	
	/* Hack -- stupid data */
	for (i = 0; i < 60; i++) wr_byte(0);
}


void wr_history(void)
{
	size_t i;
	u32b tmp32u = history_get_num();

	wr_u32b(tmp32u);
	for (i = 0; i < tmp32u; i++)
	{
		wr_u16b(history_list[i].type);
		wr_s32b(history_list[i].turn);
		wr_s16b(history_list[i].dlev);
		wr_s16b(history_list[i].clev);
		wr_byte(history_list[i].a_idx);
		wr_string(history_list[i].event);
	}
}
