#include "system/angband.h"
#include "effect/effect-monster-util.h"
#include "effect/effect-monster-oldies.h"
#include "floor/floor.h"
#include "player/avatar.h"
#include "monster/monster-status.h"

// Powerful monsters can resist.
gf_switch_result effect_monster_old_poly(effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;
	em_ptr->do_polymorph = TRUE;

	if ((em_ptr->r_ptr->flags1 & RF1_UNIQUE) ||
		(em_ptr->r_ptr->flags1 & RF1_QUESTOR) ||
		(em_ptr->r_ptr->level > randint1((em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10)) + 10))
	{
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->do_polymorph = FALSE;
		em_ptr->obvious = FALSE;
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_old_clone(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	if ((caster_ptr->current_floor_ptr->inside_arena) ||
		is_pet(em_ptr->m_ptr) ||
		(em_ptr->r_ptr->flags1 & (RF1_UNIQUE | RF1_QUESTOR)) ||
		(em_ptr->r_ptr->flags7 & (RF7_NAZGUL | RF7_UNIQUE2)))
	{
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->dam = 0;
		return GF_SWITCH_CONTINUE;
	}

	em_ptr->m_ptr->hp = em_ptr->m_ptr->maxhp;
	if (multiply_monster(caster_ptr, em_ptr->g_ptr->m_idx, TRUE, 0L))
		em_ptr->note = _("が分裂した！", " spawns!");

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_star_heal(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	(void)set_monster_csleep(caster_ptr, em_ptr->g_ptr->m_idx, 0);

	if (em_ptr->m_ptr->maxhp < em_ptr->m_ptr->max_maxhp)
	{
		if (em_ptr->seen_msg)
			msg_format(_("%^sの強さが戻った。", "%^s recovers %s vitality."), em_ptr->m_name, em_ptr->m_poss);
		em_ptr->m_ptr->maxhp = em_ptr->m_ptr->max_maxhp;
	}

	if (!em_ptr->dam)
	{
		if (caster_ptr->health_who == em_ptr->g_ptr->m_idx)
			caster_ptr->redraw |= (PR_HEALTH);
		if (caster_ptr->riding == em_ptr->g_ptr->m_idx)
			caster_ptr->redraw |= (PR_UHEALTH);

		return GF_SWITCH_FALSE;
	}

	return GF_SWITCH_TRUE;
}


// who == 0ならばプレーヤーなので、それの判定.
static void effect_monster_old_heal_check_player(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->who != 0) return;

	chg_virtue(caster_ptr, V_VITALITY, 1);
	if (em_ptr->r_ptr->flags1 & RF1_UNIQUE)
		chg_virtue(caster_ptr, V_INDIVIDUALISM, 1);

	if (is_friendly(em_ptr->m_ptr))
		chg_virtue(caster_ptr, V_HONOUR, 1);
	else if (!(em_ptr->r_ptr->flags3 & RF3_EVIL))
	{
		if (em_ptr->r_ptr->flags3 & RF3_GOOD)
			chg_virtue(caster_ptr, V_COMPASSION, 2);
		else
			chg_virtue(caster_ptr, V_COMPASSION, 1);
	}

	if (em_ptr->r_ptr->flags3 & RF3_ANIMAL)
		chg_virtue(caster_ptr, V_NATURE, 1);
}


static void effect_monster_old_heal_recovery(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (MON_STUNNED(em_ptr->m_ptr))
	{
		if (em_ptr->seen_msg)
			msg_format(_("%^sは朦朧状態から立ち直った。", "%^s is no longer stunned."), em_ptr->m_name);

		(void)set_monster_stunned(caster_ptr, em_ptr->g_ptr->m_idx, 0);
	}

	if (MON_CONFUSED(em_ptr->m_ptr))
	{
		if (em_ptr->seen_msg)
			msg_format(_("%^sは混乱から立ち直った。", "%^s is no longer confused."), em_ptr->m_name);

		(void)set_monster_confused(caster_ptr, em_ptr->g_ptr->m_idx, 0);
	}

	if (MON_MONFEAR(em_ptr->m_ptr))
	{
		if (em_ptr->seen_msg)
			msg_format(_("%^sは勇気を取り戻した。", "%^s recovers %s courage."), em_ptr->m_name, em_ptr->m_poss);

		(void)set_monster_monfear(caster_ptr, em_ptr->g_ptr->m_idx, 0);
	}
}


// todo サーペントのHPがマジックナンバー扱いになっている
gf_switch_result effect_monster_old_heal(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	/* Wake up */
	(void)set_monster_csleep(caster_ptr, em_ptr->g_ptr->m_idx, 0);
	effect_monster_old_heal_recovery(caster_ptr, em_ptr);
	if (em_ptr->m_ptr->hp < 30000) em_ptr->m_ptr->hp += em_ptr->dam;
	if (em_ptr->m_ptr->hp > em_ptr->m_ptr->maxhp) em_ptr->m_ptr->hp = em_ptr->m_ptr->maxhp;

	effect_monster_old_heal_check_player(caster_ptr, em_ptr);
	if (em_ptr->m_ptr->r_idx == MON_LEPER)
	{
		em_ptr->heal_leper = TRUE;
		if (!em_ptr->who) chg_virtue(caster_ptr, V_COMPASSION, 5);
	}

	if (caster_ptr->health_who == em_ptr->g_ptr->m_idx) caster_ptr->redraw |= (PR_HEALTH);
	if (caster_ptr->riding == em_ptr->g_ptr->m_idx) caster_ptr->redraw |= (PR_UHEALTH);

	em_ptr->note = _("は体力を回復したようだ。", " looks healthier.");
	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_old_speed(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	if (set_monster_fast(caster_ptr, em_ptr->g_ptr->m_idx, MON_FAST(em_ptr->m_ptr) + 100))
	{
		em_ptr->note = _("の動きが速くなった。", " starts moving faster.");
	}

	if (!em_ptr->who)
	{
		if (em_ptr->r_ptr->flags1 & RF1_UNIQUE)
			chg_virtue(caster_ptr, V_INDIVIDUALISM, 1);
		if (is_friendly(em_ptr->m_ptr))
			chg_virtue(caster_ptr, V_HONOUR, 1);
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_old_slow(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	/* Powerful monsters can resist */
	if ((em_ptr->r_ptr->flags1 & RF1_UNIQUE) ||
		(em_ptr->r_ptr->level > randint1((em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10)) + 10))
	{
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->obvious = FALSE;
		em_ptr->dam = 0;
		return GF_SWITCH_CONTINUE;
	}

	if (set_monster_slow(caster_ptr, em_ptr->g_ptr->m_idx, MON_SLOW(em_ptr->m_ptr) + 50))
		em_ptr->note = _("の動きが遅くなった。", " starts moving slower.");

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


/*!
 * todo 「ユニークは (魔法では)常に眠らない」はr_infoの趣旨に反すると思われる
 * 眠る確率を半分にするとかしておいた方が良さそう
 */
gf_switch_result effect_monster_old_sleep(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	if ((em_ptr->r_ptr->flags1 & RF1_UNIQUE) ||
		(em_ptr->r_ptr->flags3 & RF3_NO_SLEEP) ||
		(em_ptr->r_ptr->level > randint1((em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10)) + 10))
	{
		if (em_ptr->r_ptr->flags3 & RF3_NO_SLEEP)
		{
			if (is_original_ap_and_seen(caster_ptr, em_ptr->m_ptr)) em_ptr->r_ptr->r_flags3 |= (RF3_NO_SLEEP);
		}

		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->obvious = FALSE;
	}
	else
	{
		em_ptr->note = _("は眠り込んでしまった！", " falls asleep!");
		em_ptr->do_sleep = 500;
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


/*!
 * todo 「ユニークは (魔法では)常に混乱しない」はr_infoの趣旨に反すると思われる
 * 眠る確率を半分にするとかしておいた方が良さそう
 */
gf_switch_result effect_monster_old_conf(player_type *caster_ptr, effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	em_ptr->do_conf = damroll(3, (em_ptr->dam / 2)) + 1;
	if ((em_ptr->r_ptr->flags1 & (RF1_UNIQUE)) ||
		(em_ptr->r_ptr->flags3 & (RF3_NO_CONF)) ||
		(em_ptr->r_ptr->level > randint1((em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10)) + 10))
	{
		if (em_ptr->r_ptr->flags3 & (RF3_NO_CONF))
		{
			if (is_original_ap_and_seen(caster_ptr, em_ptr->m_ptr)) em_ptr->r_ptr->r_flags3 |= (RF3_NO_CONF);
		}

		em_ptr->do_conf = 0;
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->obvious = FALSE;
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_stasis(effect_monster_type *em_ptr, bool to_evil)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	int stasis_damage = (em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10);
	bool has_resistance = (em_ptr->r_ptr->flags1 & RF1_UNIQUE) != 0;
	has_resistance |= em_ptr->r_ptr->level > randint1(stasis_damage) + 10;
	if (to_evil) has_resistance |= (em_ptr->r_ptr->flags3 & RF3_EVIL) == 0;

	if (has_resistance)
	{
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->obvious = FALSE;
	}
	else
	{
		em_ptr->note = _("は動けなくなった！", " is suspended!");
		em_ptr->do_sleep = 500;
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}


gf_switch_result effect_monster_stun(effect_monster_type *em_ptr)
{
	if (em_ptr->seen) em_ptr->obvious = TRUE;

	em_ptr->do_stun = damroll((em_ptr->caster_lev / 20) + 3, (em_ptr->dam)) + 1;
	if ((em_ptr->r_ptr->flags1 & (RF1_UNIQUE)) ||
		(em_ptr->r_ptr->level > randint1((em_ptr->dam - 10) < 1 ? 1 : (em_ptr->dam - 10)) + 10))
	{
		em_ptr->do_stun = 0;
		em_ptr->note = _("には効果がなかった。", " is unaffected.");
		em_ptr->obvious = FALSE;
	}

	em_ptr->dam = 0;
	return GF_SWITCH_CONTINUE;
}
