xref: /dports/games/exult/exult-snapshot-v1.7.0.20211128/actors.cc

/*
 *  actors.cc - Game actors.
 *
 *  Copyright (C) 1998-1999  Jeffrey S. Freedman
 *  Copyright (C) 2000-2013  The Exult Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <memory>

#include <iostream>           /* Debugging. */
#include <cstdlib>
#include <cstring>
#include <algorithm>        /* swap. */
#include <set>
#include <map>
#include "chunks.h"
#include "gamemap.h"
#include "Astar.h"
#include "Audio.h"
#include "Gump_manager.h"
#include "Paperdoll_gump.h"
#include "Zombie.h"
#include "actions.h"
#include "actors.h"
#include "cheat.h"
#include "combat.h"
#include "combat_opts.h"
#include "dir.h"
#include "egg.h"
#include "exult.h"
#include "Face_stats.h"
#include "frameseq.h"
#include "game.h"
#include "gamewin.h"
#include "gameclk.h"
#include "imagewin.h"
#include "items.h"
#include "npctime.h"
#include "ready.h"
#include "ucmachine.h"
#include "party.h"
#include "monstinf.h"
#include "exult_constants.h"
#include "monsters.h"
#include "effects.h"
#include "palette.h"
#include "ucsched.h"
#include "ucscriptop.h"
#include "miscinf.h"
#include "animate.h"
#include "objiter.h"
#include "ammoinf.h"
#include "armorinf.h"
#include "frflags.h"
#include "weaponinf.h"
#include "npcdollinf.h"
#include "spellbook.h"
#include "usefuns.h"
#include "ignore_unused_variable_warning.h"
#include "array_size.h"

#ifdef USE_EXULTSTUDIO
#include "server.h"
#include "objserial.h"
#include "mouse.h"
#include "servemsg.h"
#endif

using std::cerr;
using std::cout;
using std::endl;
using std::memcpy;
using std::rand;
using std::string;
using std::swap;

Game_object_shared Actor::editing;

extern bool combat_trace;

// Party positions
// Direction, Party num, xy (tile) from leader
//
// Please Don't Touch - Colourless
//
const short Actor::party_pos[4][10][2] = {
	// North Facing
	{
		{ -2, 2 },
		{ 2, 2 },
		{ 0, 4 },
		{ -4, 4 },
		{ 4, 4 },
		{ -2, 6 },
		{ 2, 6 },
		{ 0, 8 },
		{ -4, 8 },
		{ 4, 8 }
	},
	// East Facing,
	{
		{ -2, -2 },
		{ -2, 2 },
		{ -4, 0 },
		{ -4, -4 },
		{ -4, 4 },
		{ -6, -2 },
		{ -6, 2 },
		{ -8, 0 },
		{ -8, -4 },
		{ -8, 4 }
	},
	// South Facing
	{
		{ -2, -2 },
		{ 2, -2 },
		{ 0, -4 },
		{ -4, -4 },
		{ 4, -4 },
		{ -2, -6 },
		{ 2, -6 },
		{ 0, -8 },
		{ -4, -8 },
		{ 4, -8 }
	},
	// West Facing
	{
		{ 2, -2 },
		{ 2, 2 },
		{ 4, 0 },
		{ 4, -4 },
		{ 4, 4 },
		{ 6, -2 },
		{ 6, 2 },
		{ 8, 0 },
		{ 8, -4 },
		{ 8, 4 }
	}
};

//	Actor frame to substitute when a frame is empty (as some are):
uint8 visible_frames[16] = {
	Actor::standing,        // Standing.
	Actor::standing,        // Steps.
	Actor::standing,
	Actor::standing,        // Ready.
	Actor::raise2_frame,        // 1-handed strikes => 2-handed.
	Actor::reach2_frame,
	Actor::strike2_frame,
	Actor::raise1_frame,        // 2-handed => 1-handed.
	Actor::reach1_frame,
	Actor::strike1_frame,
	Actor::standing,        // When you can't sit...
	Actor::kneel_frame,     // When you can't bow.
	Actor::bow_frame,       // When you can't kneel.
	Actor::standing,        // Can't lie.
	Actor::strike2_frame,       // Can't raise hands.
	Actor::ready_frame
};   // Can't strech arms outward.


// Set up actor's frame lists.
// Most NPC's walk with a 'stand'
//   frame between steps.
const int FRAME_NUM = 5;
uint8 npc_north_framenums[FRAME_NUM] = { 0,  1,  0,  2,  0},
      npc_south_framenums[FRAME_NUM] = {16, 17, 16, 18, 16},
      npc_east_framenums[FRAME_NUM] = {48, 49, 48, 50, 48},
      npc_west_framenums[FRAME_NUM] = {32, 33, 32, 34, 32};
static Frames_sequence npc_north_frames(FRAME_NUM, npc_north_framenums);
static Frames_sequence npc_south_frames(FRAME_NUM, npc_south_framenums);
static Frames_sequence npc_east_frames(FRAME_NUM, npc_east_framenums);
static Frames_sequence npc_west_frames(FRAME_NUM, npc_west_framenums);
// Avatar just walks left, right.
uint8 avatar_north_framenums[3] = {0, 1, 2},
      avatar_south_framenums[3] = {16, 17, 18},
      avatar_east_framenums[3] = {48, 49, 50},
      avatar_west_framenums[3] = {32, 33, 34};
static Frames_sequence avatar_north_frames(3, avatar_north_framenums);
static Frames_sequence avatar_south_frames(3, avatar_south_framenums);
static Frames_sequence avatar_east_frames(3, avatar_east_framenums);
static Frames_sequence avatar_west_frames(3, avatar_west_framenums);

Frames_sequence *Actor::avatar_frames[4] = {nullptr, nullptr, nullptr, nullptr};
Frames_sequence *Actor::npc_frames[4] = {nullptr, nullptr, nullptr, nullptr};

const signed char sea_serpent_attack_frames[] = {1, 2, 3};
const signed char reach_attack_frames1[] = {3, 6};
const signed char raise_attack_frames1[] = {3, 4, 6};
const signed char fast_swing_attack_frames1[] = {3, 5, 6};
const signed char slow_swing_attack_frames1[] = {3, 4, 5, 6};
const signed char reach_attack_frames2[] = {3, 9};
const signed char raise_attack_frames2[] = {3, 7, 9};
const signed char fast_swing_attack_frames2[] = {3, 8, 9};
const signed char slow_swing_attack_frames2[] = {3, 7, 8, 9};

// inline int Is_attack_frame(int i) { return i >= 3 && i <= 9; }
inline bool Is_attack_frame(int i) {
	return i == 6 || i == 9;
}
inline int Get_dir_from_frame(int i) {
	return ((((i & 16) / 8) - ((i & 32) / 32)) + 4) % 4;
}

/**
 *  Provides attribute/value pairs.
 */
class Actor_attributes {
	/// The attribute names. These are shared among all actors.
	static std::set<string> *strings;
	using Att_map = std::map<const char *, int>;
	/// The attribute name > value map.
	Att_map map;
public:
	/// Basic constructor. Initializes the attribute names.
	Actor_attributes() {
		if (!strings)
			strings = new std::set<string>;
	}
	/// Sets an attribute's value and, if needed, adds it to
	/// the attribute name list.
	/// @param nm The name of the attribute to be set.
	/// @param val Value to set the attribute to.
	void set(const char *nm, int val) {
		auto siter = strings->find(nm);
		if (siter == strings->end())
			siter = strings->insert(nm).first;
		nm = (*siter).c_str();
		map[nm] = val;
	}
	/// Gets an attribute's value, if it is in the list.
	/// @param nm The name of the attribute to be gotten.
	/// @return val Current value of the attribute, or
	/// zero if the attribute is not on the list.
	int get(const char *nm) {   // Returns 0 if not set.
		auto siter = strings->find(nm);
		if (siter == strings->end())
			return 0;
		nm = (*siter).c_str();
		auto it = map.find(nm);
		return it == map.end() ? 0 : (*it).second;
	}
	/// Gets all attributes for the current actor.
	/// @param attlist (name, value) vector containig all attributes.
	void get_all(std::vector<std::pair<const char *, int> > &attlist) {
		for (auto& it : map)
			attlist.emplace_back(it);
	}
};
std::set<string> *Actor_attributes::strings = nullptr;

/**
 *  Get/create timers.
 *  @return
 */

Npc_timer_list *Actor::need_timers(
) {
	if (!timers)
		timers = new Npc_timer_list(this);
	return timers;
}

/**
 *  Initialize frames, properties and spots.
 */

void Actor::init(
) {
	if (!avatar_frames[0])
		init_default_frames();
	size_t i;
	for (i = 0; i < array_size(properties); i++)
		properties[i] = 0;
	for (i = 0; i < array_size(spots); i++)
		spots[i] = nullptr;
}

/**
 *  Find (best) ammo of given type.
 *  @param family Desired ammo family shape.
 *  @param needed Minimum quantity needed.
 *  @return Pointer to object, if found.
 */

Game_object *Actor::find_best_ammo(
    int family,
    int needed
) {
	Game_object *best = nullptr;
	int best_strength = -20;
	Game_object_vector vec;     // Get list of all possessions.
	vec.reserve(50);
	get_objects(vec, c_any_shapenum, c_any_qual, c_any_framenum);
	for (auto *obj : vec) {
		if (obj->inside_locked() || !In_ammo_family(obj->get_shapenum(), family))
			continue;
		const Ammo_info *ainf = obj->get_info().get_ammo_info();
		if (!ainf)  // E.g., musket ammunition doesn't have it.
			continue;
		// Can't use it.
		if (obj->get_quantity() < needed)
			continue;
		// Calc ammo strength.
		int strength = ainf->get_base_strength();
		// Favor those with more shots remaining.
		if (obj->get_quantity() < 5 * needed)
			strength /= 3;
		else if (obj->get_quantity() < 10 * needed)
			strength /= 2;
		if (strength > best_strength) {
			best = obj;
			best_strength = strength;
		}
	}
	return best;
}

/**
 *  Get effective maximum range for weapon taking in consideration
 *  the actor's strength and combat.
 *  @param winf Pointer to weapon information of the current weapon,
 *  or null for no weapon.
 *  @param reach Weapon reach, or -1 to use weapon's.
 *  @return Weapon's effective range.
 */
int Actor::get_effective_range(
    const Weapon_info *winf,
    int reach
) const {
	if (reach < 0) {
		if (!winf) {
			const Monster_info *minf = get_info().get_monster_info();
			return minf ? minf->get_reach()
			       : Monster_info::get_default()->get_reach();
		}
		reach = winf->get_range();
	}
	int uses = winf ? winf->get_uses() : static_cast<int>(Weapon_info::melee);
	if (!uses || uses == Weapon_info::ranged)
		return reach;
	else {
		int eff_range;
		int str = get_effective_prop(static_cast<int>(Actor::strength));
		int combat = get_effective_prop(static_cast<int>(Actor::combat));
		if (str < combat)
			eff_range = str;
		else
			eff_range = combat;
		if (uses == Weapon_info::good_thrown)
			eff_range *= 2;
		if (eff_range < reach)
			eff_range = reach;
		if (eff_range > 31)
			eff_range = 31;
		return eff_range;
	}
}

/**
 *  Find ammo used by weapon.
 *  @param weapon The weapon shape.
 *  @param needed Minimum quantity needed.
 *  @param recursive Whether or not to search inside backpacks and bags.
 *  @return Pointer to object if found.
 */

Game_object *Actor::find_weapon_ammo(
    int weapon,
    int needed,
    bool recursive
) {
	if (weapon < 0)
		return nullptr;
	const Weapon_info *winf = ShapeID::get_info(weapon).get_weapon_info();
	if (!winf)
		return nullptr;
	int family = winf->get_ammo_consumed();
	if (family >= 0) {
		Game_object *aobj = get_readied(quiver);
		if (aobj && In_ammo_family(aobj->get_shapenum(), family) &&
		        aobj->get_quantity() >= needed)
			return aobj;        // Already readied.
		else if (recursive)
			return find_best_ammo(family, needed);
		return nullptr;
	}

	// Search readied weapons first.
	static Ready_type_Exult wspots[] = {lhand, rhand, back_2h, belt};
	for (auto wspot : wspots) {
		Game_object *obj = spots[static_cast<int>(wspot)];
		if (!obj || obj->get_shapenum() != weapon)
			continue;
		const Shape_info &inf = obj->get_info();
		if (family == -2) {
			if (!inf.has_quality() || obj->get_quality() >= needed)
				return obj;
		}
		// Family -1 and family -3.
		else if (obj->get_quantity() >= needed)
			return obj;
	}

	// Now recursively search all contents.
	return recursive ? Container_game_object::find_weapon_ammo(weapon) : nullptr;
}

/**
 *  Swap new ammo with old.
 *  @param newammo Pointer to new ammo object.
 */

void Actor::swap_ammo(
    Game_object *newammo
) {
	Game_object *aobj = get_readied(quiver);
	if (aobj == newammo)
		return;         // Already what we need.
						// Keep these from getting deleted:
    Game_object_shared aobj_shared;
    Game_object_shared newammo_shared;
    if (aobj) {           // Something there already?
		aobj->remove_this(&aobj_shared);   // Remove it.
	}
	newammo->remove_this(&newammo_shared);
	add(newammo, true);        // Should go to the right place.
	if (aobj)           // Put back old ammo.
		add(aobj, true);
}

/**
 *  Recursivelly searches for ammunition for a given weapon, if needed.
 *  @param npc The NPC to be searched.
 *  @param bobj The weapon we want to check.
 *  @param ammo Optional pointer that receives a pointer to the best ammunition
 *  found for the given weapon.
 *  @param recursive Whether or not to search inside backpacks and bags.
 *  @return true if the weapon can be used, ammo is pointer to best ammunition.
 */

static inline bool Is_weapon_usable(
    Actor *npc,
    Game_object *bobj,
    Game_object **ammo = nullptr,
    bool recursive = true
) {
	if (ammo)
		*ammo = nullptr;
	const Weapon_info *winf = bobj->get_info().get_weapon_info();
	if (!winf)
		return false;       // Not a weapon.
	Game_object *aobj = nullptr;  // Check ranged first.
	int need_ammo = npc->get_weapon_ammo(bobj->get_shapenum(),
	                                     winf->get_ammo_consumed(), winf->get_projectile(),
	                                     true, &aobj, recursive);
	if (!need_ammo)
		return true;
	// Try melee if the weapon is not ranged.
	else if (!aobj && winf->get_uses() != Weapon_info::ranged)
		need_ammo = npc->get_weapon_ammo(bobj->get_shapenum(),
		                                 winf->get_ammo_consumed(), winf->get_projectile(),
		                                 false, &aobj, recursive);
	if (need_ammo && !aobj)
		return false;
	if (ammo)
		*ammo = aobj;
	return true;
}

/**
 *  Ready ammo for weapon being carried.
 *  @return Returns true if successful.
 */

bool Actor::ready_ammo(
) {
	Game_object *weapon = spots[static_cast<int>(lhand)];
	if (!weapon)
		return false;
	const Shape_info &info = weapon->get_info();
	const Weapon_info *winf = info.get_weapon_info();
	if (!winf)
		return false;
	int ammo = winf->get_ammo_consumed();
	if (ammo < 0) {
		// Ammo not needed.
		return !(winf->uses_charges() && info.has_quality() &&
		        weapon->get_quality() <= 0);   // Uses charges, but none left.
	}
	Game_object *found = nullptr;
	// Try non-recursive search for ammo first.
	bool usable = Is_weapon_usable(this, weapon, &found, false);
	if (usable) // Ammo is available and ready.
		return true;
	// Try recursive search now.
	found = find_best_ammo(ammo);
	if (!found)
		return false;
	swap_ammo(found);
	return true;
}

/**
 *  If no shield readied, look through all possessions for the best one.
 *  @return Returns true if successful.
 */

bool Actor::ready_best_shield(
) {
	if (two_handed)
		return false;
	if (spots[rhand]) {
		const Shape_info &inf = spots[rhand]->get_info();
		if (is_in_party() || inf.get_armor() || inf.get_armor_immunity())
			return inf.get_armor() || inf.get_armor_immunity();
	}
	Game_object *old_rhand = nullptr;
	Game_object_shared rhand_keep;
	Game_object_shared best_keep;
	if (spots[rhand]) {     // remove old offhand item
		old_rhand = spots[rhand];
		old_rhand->remove_this(&rhand_keep);
	}
	Game_object_vector vec;     // Get list of all possessions.
	vec.reserve(50);
	get_objects(vec, c_any_shapenum, c_any_qual, c_any_framenum);
	Game_object *best = nullptr;
	int best_strength = -20;
	for (auto *obj : vec) {
		if (obj->inside_locked())
			continue;
		const Shape_info &info = obj->get_info();
		// Only want those that can be readied in hand.
		int ready = info.get_ready_type();
		if (ready != lhand && ready != backpack)
			continue;
		const Armor_info *arinf = info.get_armor_info();
		if (!arinf)
			continue;   // Not a shield.
		if (spots[lhand] == obj) // Don't take the weapon.
			continue;
		int strength = arinf->get_base_strength();
		if (strength > best_strength) {
			best = obj;
			best_strength = strength;
		}
	}
	if (!best) {
		if (old_rhand)  // add offhand item back to where it was
			add(old_rhand, true);
		return false;
	}
	// Spot is free already.
	best->remove_this(&best_keep);
	add(best, true);           // Should go to the right place.
	if (old_rhand && old_rhand != best) // don't add twice
		add(old_rhand, true);
	return true;
}


/**
 *  If no weapon readied, look through all possessions for the best one.
 *  @return Returns true if successful.
 */

bool Actor::ready_best_weapon(
) {
	int points;
	if (Actor::get_weapon(points) != nullptr && ready_ammo()) {
		ready_best_shield();
		return true;        // Already have one.
	}
	// Check for spellbook.
	Game_object *obj = get_readied(lhand);
	if (obj && obj->get_info().get_shape_class() == Shape_info::spellbook) {
		if ((static_cast<Spellbook_object *>(obj))->can_do_spell(this)) {
			ready_best_shield();
			return true;
		}
	}
	Game_object_vector vec;     // Get list of all possessions.
	vec.reserve(50);
	get_objects(vec, c_any_shapenum, c_any_qual, c_any_framenum);
	Game_object *best = nullptr;
	Game_object *best_ammo = nullptr;
	Game_object_shared keep1;
	Game_object_shared keep2;
	Game_object_shared best_keep;
	int best_strength = -20;
	int wtype = backpack;
	for (auto *obj : vec) {
		if (obj->inside_locked())
			continue;
		const Shape_info &info = obj->get_info();
		int ready = info.get_ready_type();
		// backpack and rhand added for dragon breath and some spells
		if (ready != lhand && ready != both_hands &&
		        ready != rhand && ready != backpack)
			continue;
		const Weapon_info *winf = info.get_weapon_info();
		if (!winf)
			continue;   // Not a weapon.
		Game_object *ammo_obj = nullptr;
		if (!Is_weapon_usable(this, obj, &ammo_obj))
			continue;
		int strength = winf->get_base_strength();
		strength += get_effective_range(winf);
		if (strength > best_strength) {
			wtype = ready;
			best = obj;
			best_ammo = ammo_obj != obj ? ammo_obj : nullptr;
			best_strength = strength;
		}
	}
	if (!best) {
		ready_best_shield();
		return false;
	}
	// If nothing is in left hand, nothing will happen.
	Game_object* remove1 = spots[lhand];
	Game_object* remove2 = nullptr;
	if (wtype == both_hands && spots[rhand])
		remove2 = spots[rhand];
	// Prevent double removal and double add (can corrupt objects list).
	// No need for similar check for remove1 as we wouldn't be here
	// if remove1 were a weapon we could use.
	if (remove2 == best)
		remove2 = nullptr;
	// Free the spot(s).
	if (remove1)
		remove1->remove_this(&keep1);
	if (remove2)
		remove2->remove_this(&keep2);
	best->remove_this(&best_keep);
	if (wtype == rhand) // tell it the correct ready spot
		add_readied(best, lhand);
	else
		add(best, true);            // Should go to the right place.
	ready_best_shield();    // Also add a shield for 1-handed weapons.
	if (remove1)            // Put back other things.
		add(remove1, true);
	if (remove2)
		add(remove2, true);
	if (best_ammo)
		swap_ammo(best_ammo);
	return true;
}

/**
 *  Try to store given object.
 */

bool Actor::empty_hand(
    Game_object *obj,
    Game_object_shared *keep
) {
	if (!obj)
		return true;
	static int chkspots[] = {belt, backpack};
	add_dirty();
	obj->remove_this(keep);
	for (int chkspot : chkspots)
		if (add_readied(obj, chkspot, true, true))      // Slot free?
			return true;

	return false;
}

/**
 *  Try to store what is the hands.
 */

void Actor::empty_hands(
) {
	Game_object *obj = spots[lhand];
	Game_object_shared keep;
	if (!empty_hand(obj, &keep))
		add(obj, true);
	obj = spots[rhand];
	if (!empty_hand(obj, &keep))
		add(obj, true);
}

/**
 *  Get effective weapon shape, taking casting frames in consideration.
 *  @return The shape to be displayed in-hand.
 */

int Actor::get_effective_weapon_shape(
) const {
	if (get_casting_mode() == Actor::show_casting_frames)
		// Casting frames
		return casting_shape;
	else {
		Game_object *weapon = spots[lhand];
		return weapon->get_shapenum();
	}
}

/**
 *  Add dirty rectangle(s).
 *  @return Returns false if not on screen.
 */
bool Actor::add_dirty(
    bool figure_rect         // Recompute weapon rectangle.
) {
	if (!gwin->add_dirty(this))
		return false;
	if (figure_rect || get_casting_mode() == Actor::show_casting_frames) {
		int weapon_x;
		int weapon_y;
		int weapon_frame;
		if (figure_weapon_pos(weapon_x, weapon_y, weapon_frame)) {
			int shnum = get_effective_weapon_shape();

			Shape_frame *wshape = ShapeID(shnum, weapon_frame).get_shape();

			if (wshape) // Set dirty area rel. to NPC.
				weapon_rect = gwin->get_shape_rect(wshape,
				                                   weapon_x, weapon_y);
			else
				weapon_rect.w = 0;
		} else
			weapon_rect.w = 0;
	}
	if (weapon_rect.w > 0) {    // Repaint weapon area too.
		TileRect r = weapon_rect;
		int xoff;
		int yoff;
		gwin->get_shape_location(this, xoff, yoff);
		r.shift(xoff, yoff);
		r.enlarge(c_tilesize / 2);
		gwin->add_dirty(gwin->clip_to_win(r));
	}
	return true;
}

/**
 *  Change the frame and set to repaint areas.
 *  @param frnum The new frame.
 */

void Actor::change_frame(
    int frnum
) {
	add_dirty();            // Set to repaint old area.
	ShapeID id(get_shapenum(), frnum, get_shapefile());
	Shape_frame *shape = id.get_shape();
	if (!shape || shape->is_empty()) {
		// Swap 1hand <=> 2hand frames.
		frnum = (frnum & 48) | visible_frames[frnum & 15];
		id.set_frame(frnum);
		if (!(shape = id.get_shape()) || shape->is_empty())
			frnum = (frnum & 48) | Actor::standing;
	}
	rest_time = 0;
	set_frame(frnum);
	add_dirty(true);           // Set to repaint new.
}

/**
 *  See if it's blocked when trying to move to a new tile.
 *  @param t Tile to step to. Tz is possibly updated by this function.
 *  @param f Pointer to tile we are stepping from, or null for current tile.
 *  @param move_flags Additional movement flags to consider for step.
 *  @return Returns true if so, else false.
 */

bool Actor::is_blocked(
    Tile_coord &t,          // Tz possibly updated.
    Tile_coord *f,          // Step from here, or curpos if null.
    const int move_flags
) {
	const Shape_info &info = get_info();
	// Get dim. in tiles.
	int frame = get_framenum();
	int xtiles = info.get_3d_xtiles(frame);
	int ytiles = info.get_3d_ytiles(frame);
	int ztiles = info.get_3d_height();
	t.fixme();
	if (xtiles == 1 && ytiles == 1) { // Simple case?
		Map_chunk *nlist = gmap->get_chunk(
		                       t.tx / c_tiles_per_chunk, t.ty / c_tiles_per_chunk);
		nlist->setup_cache();
		int new_lift;
		bool blocked = nlist->is_blocked(ztiles, t.tz,
		                                t.tx % c_tiles_per_chunk, t.ty % c_tiles_per_chunk,
		                                new_lift, move_flags | get_type_flags());
		t.tz = new_lift;
		return blocked;
	}
	return Map_chunk::is_blocked(xtiles, ytiles, ztiles,
	                             f ? *f : get_tile(), t, move_flags | get_type_flags());
}

/**
 *  Finds an object which blocks the destination tile.
 *  @param tile The (blocked) tile to check.
 *  @param dir Direction we are stepping from.
 */

Game_object *Actor::find_blocking(
    Tile_coord const &tile,
    int dir
) {
	ignore_unused_variable_warning(tile);
	TileRect footprint = get_footprint();
	TileRect base = get_footprint();
	switch (dir) {
	case north:
		footprint.shift(0, -1);
		break;
	case northeast:
		footprint.shift(1, -1);
		break;
	case east:
		footprint.shift(1, 0);
		break;
	case southeast:
		footprint.shift(1, 1);
		break;
	case south:
		footprint.shift(0, 1);
		break;
	case southwest:
		footprint.shift(-1, 1);
		break;
	case west:
		footprint.shift(-1, 0);
		break;
	case northwest:
		footprint.shift(-1, -1);
		break;
	}
	Game_object *block;
	for (int i = footprint.x; i < footprint.x + footprint.w; i++)
		for (int j = footprint.y; j < footprint.y + footprint.h; j++)
			if (base.has_world_point(i, j))
				continue;
			else if ((block = Game_object::find_blocking(
			                      Tile_coord(i, j, get_tile().tz))) != nullptr)
				return block;
	return nullptr;
}

/**
 *  Move an object, and possibly change its shape too.
 *  @param old_chunk The actor's old chunk.
 *  @param new_chunk The chunk to which the actor is moving.
 *  @param new_sx New x coordinate.
 *  @param new_sy New y coordinate.
 *  @param new_frame The new frame.
 *  @param new_lift The new z coordinate.
 */
inline void Actor::movef(
    Map_chunk *old_chunk,
    Map_chunk *new_chunk,
    int new_sx, int new_sy, int new_frame,
    int new_lift
) {
    Game_object_shared keep = shared_from_this();
    if (old_chunk)          // Remove from current chunk.
		old_chunk->remove(this);
	set_shape_pos(new_sx, new_sy);
	if (new_frame >= 0)
		change_frame(new_frame);
	if (new_lift >= 0)
		set_lift(new_lift);
	new_chunk->add(this);
}

/**
 *  Create character.
 *  @param nm The actor's name.
 *  @param shapenum The initial shape.
 *  @param num The NPC's number from npc.dat.
 *  @param uc The usecofe function to use.
 */

Actor::Actor(
    const std::string &nm,
    int shapenum,
    int num,
    int uc
) : name(nm), usecode(uc),
	usecode_assigned(false), unused(false),
	npc_num(num), face_num(num), party_id(-1), atts(nullptr), temperature(0),
	shape_save(-1), oppressor(-1),
	casting_mode(not_casting), casting_shape(-1),
	target_tile(Tile_coord(-1, -1, 0)), attack_weapon(-1),
	attack_mode(nearest),
	schedule_type(Schedule::loiter), next_schedule(255), schedule(nullptr),
	restored_schedule(-1), dormant(true), hit(false), combat_protected(false),
	user_set_attack(false), alignment(0), charmalign(0), two_handed(false),
	two_fingered(false), use_scabbard(false), use_neck(false),
	light_sources(0), usecode_dir(0), type_flags(0),
	gear_immunities(0), gear_powers(0), ident(0),
	skin_color(-1), action(nullptr),
	frame_time(0), step_index(0), qsteps(0), timers(nullptr),
	weapon_rect(0, 0, 0, 0), rest_time(0) {
	set_shape(shapenum, 0);
	init();
	frames = &npc_frames[0];    // Default:  5-frame walking.
}

/**
 *  Deletes actor.
 */

Actor::~Actor(
) {
	purge_deleted_actions();
	if (in_queue() && gwin->get_tqueue())
		gwin->get_tqueue()->remove(this);
	delete schedule;
	delete action;
	delete timers;
	delete atts;
}

/**
 *  Goes through the actor's readied gear and caches powers
 *  and immunities.
 */

void Actor::refigure_gear() {
	static Ready_type_Exult locs[] = {head, belt, lhand, lfinger, legs,
	                                  feet, rfinger, rhand, torso, amulet,
	                                  earrings, cloak, gloves
	                                 };
	int powers = 0;
	int immune = 0;
	light_sources = 0;
	for (auto loc : locs) {
		Game_object *worn = spots[static_cast<int>(loc)];
		if (worn) {
			const Shape_info &info = worn->get_info();
			char rdy = info.get_ready_type();
			if (info.is_light_source() && (loc != belt ||
			                               (rdy != lhand && rdy != rhand && rdy != both_hands)))
				add_light_source(info.get_object_light(worn->get_framenum()));
			powers |= info.get_object_flags(worn->get_framenum(),
			                                info.has_quality() ? worn->get_quality() : -1);
			immune |= info.get_armor_immunity();
		}
	}
	gear_immunities = immune;
	gear_powers = powers;
}

void Actor::say_hunger_message() {
	int food = get_property(static_cast<int>(food_level));
	if (food <= 0) {        // Really low?
		if (rand() % 4)
			say(first_starving, last_starving);
	} else if (food <= 4) {
		if (rand() % 3)
			say(first_needfood, last_needfood);
	} else { //if (food <= 9)
		if (rand() % 2)
			say(first_hunger, last_hunger);
	}
}

/**
 *  Decrement food level and print complaints if it gets too low.
 *  NOTE:  Should be called every hour.
 */

void Actor::use_food(
) {
	if (get_info().does_not_eat() || (gear_powers & Frame_flags::doesnt_eat))
		return;
	int food = get_property(static_cast<int>(food_level));
	food -= (rand() % 4);   // Average 1.5 level/hour.
	set_property(static_cast<int>(food_level), food);
	if (food > 9)
		return;
	say_hunger_message();
	need_timers()->start_hunger(); // minute checks for damage and messages.
}

/**
 *  Periodic check for freezing.
 *  @param freeze True if the actor is freezing. This is usually the
 *  Avatar's freeze flag.
 */

void Actor::check_temperature(
    bool freeze
) {
	if (!freeze) {          // Not in a cold area?
		if (!temperature)   // 0 means warm.
			return;     // Nothing to do.
		// Warming up.
		temperature -= (temperature >= 5 ? 5 : temperature);
		if (rand() % 3 == 0) {
			if (temperature >= 30)
				say(first_warming_up, last_warming_up);
			else
				say(first_warming_up_2, last_warming_up_2);
		}
		return;
	}
	// Immune to cold by nature or an item?
	if (get_info().is_cold_immune() || (gear_powers & Frame_flags::cold_immune))
		return;
	if (get_schedule_type() == Schedule::wait)
		return;         // Not following leader?  Leave alone.
	int warmth = figure_warmth();   // (This could be saved for speed.)
	if (warmth >= 100) {    // Enough clothing?
		if (!temperature)
			return;     // Already warm.
		int decr = 1 + (warmth - 100) / 10;
		decr = decr > temperature ? temperature : decr;
		temperature -= decr;
		if (rand() % 3 == 0) {
			if (temperature >= 30)
				say(first_warming_in_cold, last_warming_in_cold);
			else
				say(first_warming_in_cold_2, last_warming_in_cold_2);
		}
		return;
	}
	int incr = 1 + (100 - warmth) / 20;
	temperature += incr;
	if (temperature > 63)
		temperature = 63;
	if (rand() % 3 == 0)
		switch (temperature / 10) {
		case 0:
			say(first_chilly, last_chilly); // A bit chilly.
			break;
		case 1:
			say(first_cold, last_cold); // It's colder.
			break;
		case 2:
			say(first_colder, last_colder);
			break;
		case 3:
			say(first_frostbite, last_frostbite);   // Frostbite.
			break;
		case 4:
			say(first_frostbite_2, last_frostbite_2);
			break;
		case 5:
			say(first_frostbite_3, last_frostbite_3);
			reduce_health(1, Weapon_data::sonic_damage);
			break;
		case 6:
			say(first_frozen, last_frozen); // Frozen.
			reduce_health(1 + rand() % 3, Weapon_data::sonic_damage);
			break;
		}
}

/*
 *  Get sequence of frames for an attack.
 *
 *  Output: # of frames stored.
 */

int Actor::get_attack_frames(
    int weapon,         // Weapon shape, or -1 for innate.
    bool projectile,        // Shooting/throwing.
    int dir,            // 0-7 (as in dir.h).
    signed char *frames         // Frames stored here.
) const {
	const signed char *which;
	int cnt = 0;
	if (is_slime())
		return 0;
	else if (get_info().has_strange_movement()) {
		which = sea_serpent_attack_frames;
		cnt = sizeof(sea_serpent_attack_frames);
	} else {
		const signed char *reach_attack_frames;
		const signed char *raise_attack_frames;
		const signed char *fast_swing_attack_frames;
		const signed char *slow_swing_attack_frames;
		if (two_handed) {
			reach_attack_frames = reach_attack_frames2;
			raise_attack_frames = raise_attack_frames2;
			fast_swing_attack_frames = fast_swing_attack_frames2;
			slow_swing_attack_frames = slow_swing_attack_frames2;
		} else {
			reach_attack_frames = reach_attack_frames1;
			raise_attack_frames = raise_attack_frames1;
			fast_swing_attack_frames = fast_swing_attack_frames1;
			slow_swing_attack_frames = slow_swing_attack_frames1;
		}
		unsigned char frame_flags;  // Get Actor_frame flags.
		const Weapon_info *winfo;
		if (weapon >= 0 &&
		        (winfo = ShapeID::get_info(weapon).get_weapon_info()) != nullptr)
			frame_flags = winfo->get_actor_frames(projectile);
		else                // Default to normal swing.
			frame_flags = projectile ? Weapon_info::reach : Weapon_info::fast_swing;
		switch (frame_flags) {
		case Weapon_info::reach:
			which = reach_attack_frames;
			cnt = sizeof(reach_attack_frames1);
			break;
		case Weapon_info::raise:
			which = raise_attack_frames;
			cnt = sizeof(raise_attack_frames1);
			break;
		case Weapon_info::fast_swing:
			which = fast_swing_attack_frames;
			cnt = sizeof(fast_swing_attack_frames1);
			break;
		case Weapon_info::slow_swing:
		default:
			which = slow_swing_attack_frames;
			cnt = sizeof(slow_swing_attack_frames1);
			break;
		}
	}
	for (int i = 0; i < cnt; i++) { // Copy frames with correct dir.
		int frame = get_dir_framenum(dir, *which++);
		// Check for empty shape.
		ShapeID id(get_shapenum(), frame, get_shapefile());
		Shape_frame *shape = id.get_shape();
		if (!shape || shape->is_empty()) {
			// Swap 1hand <=> 2hand frames.
			frame = get_dir_framenum(dir, visible_frames[frame & 15]);
			id.set_frame(frame);
			if (!(shape = id.get_shape()) || shape->is_empty())
				frame = get_dir_framenum(dir, Actor::standing);
		}
		*frames++ = frame;
	}
	return cnt;
}

void Actor::add_light_source(Game_object *obj) {
	const Shape_info &info = obj->get_info();
	add_light_source(info.get_object_light(obj->get_framenum()));
}

void Actor::remove_light_source(Game_object *obj) {
	const Shape_info &info = obj->get_info();
	remove_light_source(info.get_object_light(obj->get_framenum()));
}

/*
 *  Set default set of frames.
 */

void Actor::init_default_frames(
) {
	// Set up actor's frame lists.
	npc_frames[static_cast<int>(north) / 2] = &npc_north_frames;
	npc_frames[static_cast<int>(south) / 2] = &npc_south_frames;
	npc_frames[static_cast<int>(east) / 2] =  &npc_east_frames;
	npc_frames[static_cast<int>(west) / 2] =  &npc_west_frames;
	avatar_frames[static_cast<int>(north) / 2] = &avatar_north_frames;
	avatar_frames[static_cast<int>(south) / 2] = &avatar_south_frames;
	avatar_frames[static_cast<int>(east) / 2] =  &avatar_east_frames;
	avatar_frames[static_cast<int>(west) / 2] =  &avatar_west_frames;
}

/*
 *  This is called for the Avatar to return to a normal standing position
 *  when not doing anything else.
 */

void Actor::stand_at_rest(
) {
	rest_time = 0;          // Reset timer.
	int frame = get_framenum() & 0xf; // Base frame #.
	if (frame == standing || frame == sit_frame || frame == sleep_frame)
		return;         // Already standing/sitting/sleeping.
	if (!is_dead() && schedule_type == Schedule::follow_avatar &&
	        !get_flag(Obj_flags::asleep))
		change_frame(get_dir_framenum(standing));
}

/*
 *  Set new action.
 */

void Actor::set_action(
    Actor_action *newact
) {
	if (newact != action) {
		Actor_action *todel;
		if (action && (todel = action->kill()) != nullptr)
			deletedactions.push_back(todel);
		action = newact;
	}
	if (!action)            // No action?  We're stopped.
		frame_time = 0;
}

/*
 *  Empty deleted action list.
 */

void Actor::purge_deleted_actions() {
	while (!deletedactions.empty()) {
		Actor_action *act = deletedactions.back();
		deletedactions.pop_back();
		delete act;
	}
}

/*
 *  Get destination, or current spot if no destination.
 */

Tile_coord Actor::get_dest(
) const {
	Tile_coord dest;
	if (action && action->get_dest(dest))
		return dest;
	else
		return get_tile();
}

/*
 *  Walk towards a given tile.
 */

void Actor::walk_to_tile(
    Tile_coord const &dest,     // Destination.
    int speed,          // Time between frames (msecs).
    int delay,          // Delay before starting (msecs) (only
    //   if not already moving).
    int maxblk          // Max. # retries if blocked.
) {
	if (!action)
		action = new Path_walking_actor_action(new Zombie(), maxblk);
	set_action(action->walk_to_tile(this, get_tile(), dest));
	if (action)         // Successful at setting path?
		start(speed, delay);
	else
		frame_time = 0;     // Not moving.
}

/*
 *  Find a path towards a given tile.
 *
 *  Output: 0 if failed.
 */

int Actor::walk_path_to_tile(
    Tile_coord const &src,          // Our location, or an off-screen
    //   location to try path from.
    Tile_coord const &dest,     // Destination.
    int speed,          // Time between frames (msecs).
    int delay,          // Delay before starting (msecs) (only
    //   if not already moving).
    int dist,           // Distance to get within dest.
    int maxblk          // Max. # retries if blocked.
) {
	set_action(new Path_walking_actor_action(new Astar(), maxblk));
	set_action(action->walk_to_tile(this, src, dest, dist));
	if (action) {       // Successful at setting path?
		start(speed, delay);
		return 1;
	}
	frame_time = 0;         // Not moving.
	return 0;
}

/*
 *  Begin animation.
 */

void Actor::start(
    int speed,          // Time between frames (msecs).
    int delay           // Delay before starting (msecs) (only
    //   if not already moving).
) {
	dormant = false;        // 14-jan-2001 - JSF.
	frame_time = speed;
	if (!in_queue() || delay) { // Not already in queue?
		if (delay)
			gwin->get_tqueue()->remove(this);
		uint32 curtime = Game::get_ticks();
		gwin->get_tqueue()->add(curtime + delay, this, gwin);
	}
}

/*
 *  Start with standard delay.
 */
void Actor::start_std(
) {
	start(gwin->get_std_delay(), gwin->get_std_delay());
}

/*
 *  Stop animation.
 */
void Actor::stop(
) {
	/* +++ This might cause jerky walking. Needs to be done above? */
	if (action) {
		action->stop(this);
		add_dirty();
	}
	frame_time = 0;
}

/*
 *  Want one value to approach another.
 */

inline int Approach(
    int from,
    int to,
    int dist            // Desired distance.
) {
	if (from <= to)         // Going forwards?
		return to - from <= dist ? from : to - dist;
	else                // Going backwards.
		return from - to <= dist ? from : to + dist;
}

/*
 *  Follow the leader.
 */

void Actor::follow(
    const Actor *leader
) {
	if (Actor::is_dead() || !can_act())
		return;         // Not when dead, paralyzed, or asleep.
	int delay = 0;
	int dist;           // How close to aim for.
	Tile_coord leaderpos = leader->get_tile();
	Tile_coord pos = get_tile();
	Tile_coord goal;
	if (leader->is_moving()) {  // Figure where to aim.
		// Aim for leader's dest.
		dist = 2 + party_id / 3;
		goal = leader->get_dest();
		goal.tx = Approach(pos.tx, goal.tx, dist);
		goal.ty = Approach(pos.ty, goal.ty, dist);
	} else {            // Leader stopped?
		goal = leaderpos;   // Aim for leader.
		if (gwin->walk_in_formation && distance(leader) <= 6)
			return;     // In formation, & close enough.
//		cout << "Follow:  Leader is stopped" << endl;
		// +++++For formation, why not get correct positions?
		static int xoffs[10] = { -1, 1, -2, 2, -3, 3, -4, 4, -5, 5};
		static int yoffs[10] = {1, -1, 2, -2, 3, -3, 4, -4, 5, -5};
		goal.tx += xoffs[party_id] + 1 - rand() % 3;
		goal.ty += yoffs[party_id] + 1 - rand() % 3;
		dist = 1;
	}
	// Already aiming along a path?
	if (is_moving() && action && action->following_smart_path() &&
	        // And leader moving, or dest ~= goal?
	        (leader->is_moving() || goal.distance(get_dest()) <= 5))
		return;
	// Tiles to goal.
	int goaldist = goal.distance(pos);
	if (goaldist < dist) {      // Already close enough?
		if (!leader->is_moving())
			stop();
		return;
	}
	// Is leader following a path?
	bool leaderpath = leader->action &&
	                  leader->action->following_smart_path();
	// Get leader's distance from goal.
	int leaderdist = leader->distance(goal);
	// Get his speed.
	int speed = leader->get_frame_time();
	if (!speed) {       // Not moving?
		speed = 100;
		if (goaldist < leaderdist)  // Closer than leader?
			// Delay a bit IF not moving.
			delay = (1 + leaderdist - goaldist) * 100;
	}
	if (goaldist - leaderdist >= 5)
		speed -= 20;        // Speed up if too far.
	// Get window rect. in tiles.
	TileRect wrect = gwin->get_win_tile_rect();
	int dist2lead = leader->distance(pos);
	// Getting kind of far away?
	if (dist2lead > wrect.w + wrect.w / 2 &&
	        party_id >= 0 &&        // And a member of the party.
	        !leaderpath) {      // But leader is not following path.
		// Approach, or teleport.
		// Try to approach from offscreen.
		if (approach_another(leader))
			return;
		// Find a free spot.
		goal = Map_chunk::find_spot(
		           leader->get_tile(), 2, this);
		if (goal.tx != -1) {
			move(goal.tx, goal.ty, goal.tz);
			if (rand() % 2)
				say(first_catchup, last_catchup);
			gwin->paint();
			return;
		}
	}
	// NOTE:  Avoid delay when moving,
	//  as it creates jerkiness.  AND,
	//  0 retries if blocked.
	walk_to_tile(goal, speed, delay, 0);
}

/*
 *  Approach another actor from offscreen.
 *
 *  Output: 0 if failed.
 */

int Actor::approach_another(
    const Actor *other,
    bool wait           // If true, game hangs until arrival.
) {
	Tile_coord dest = other->get_tile();
	// Look outwards for free spot.
	dest = Map_chunk::find_spot(dest, 8, get_shapenum(), get_framenum());
	if (dest.tx == -1)
		return 0;
	// Where are we now?
	Tile_coord src = get_tile();
	if (!gwin->get_win_tile_rect().has_world_point(src.tx - src.tz / 2,
	        src.ty - src.tz / 2))
		// Off-screen?
		src = Tile_coord(-1, -1, 0);
	int destmap = other->get_map_num();
	int srcmap = get_map_num();
	if (destmap != -1 && srcmap != -1 && srcmap != destmap) {
		src = Tile_coord(-1, -1, 0);
		move(src, destmap);
	}
	Actor_action *action = new Path_walking_actor_action();
	if (!action->walk_to_tile(this, src, dest)) {
		delete action;
		return 0;
	}
	set_action(action);
	int speed = gwin->get_std_delay() / 2;
	start(speed);           // Walk fairly fast.
	if (wait)           // Only wait ~1/5 sec.
		Wait_for_arrival(this, dest, 2 * gwin->get_std_delay());
	return 1;
}

/*
 *  Get information about a tile that an actor is about to step onto.
 */

void Actor::get_tile_info(
    Actor *actor,           // May be 0 if not known.
    Game_window *gwin,
    Map_chunk *nlist,   // Chunk.
    int tx, int ty,         // Tile within chunk.
    bool &water,         // Returns 1 if water.
    bool &poison         // Returns 1 if poison.
) {
	ignore_unused_variable_warning(gwin);
	ShapeID flat = nlist->get_flat(tx, ty);
	if (flat.get_shapenum() == -1)
		water = poison = false;
	else {
		const Shape_info &finfo = flat.get_info();
		water = finfo.is_water();
		poison = finfo.is_poisonous();
		// Check for swamp/swamp boots.
		if (poison && actor) {
			if ((actor->gear_powers &
			        (Frame_flags::swamp_safe | Frame_flags::poison_safe)) != 0)
				poison = false;
			else {      // Not protected by gear?
				// Safe from poisoning?
				const Monster_info *minf =
				    actor->get_info().get_monster_info();
				if (minf && minf->poison_safe())
					poison = false;
			}
		}
	}
}

/*
 *  Set combat opponent.
 */

void Actor::set_target(
    Game_object *obj,
    bool start_combat       // If true, set sched. to combat.
) {
	target = weak_from_obj(obj);
	bool im_party = is_in_party() || this == gwin->get_main_actor();
	if (start_combat && !im_party &&
	        (schedule_type != Schedule::combat || !schedule))
		set_schedule_type(Schedule::combat);
	Actor *opponent = obj ? obj->as_actor() : nullptr;
	if (opponent)
		opponent->set_oppressor(get_npc_num());
	// Pure guess.
	Actor *oppr = oppressor >= 0 ? gwin->get_npc(oppressor) : nullptr;
	if (oppr && (oppr->get_target() != this ||
	             oppr->get_schedule_type() != Schedule::combat))
		oppressor = -1;
}

/*
 *  Works out if an item can be readied in a spot
 *
 *  Output: true if it does fit, or false if it can't
 */

bool Actor::fits_in_spot(Game_object *obj, int spot) {
	const Shape_info &inf = obj->get_info();
	int rtype = inf.get_ready_type();
	int alt1 = inf.get_alt_ready1();
	int alt2 = inf.get_alt_ready2();
	bool can_scabbard = (alt1 == scabbard || alt2 == scabbard);
	bool can_neck = (rtype == neck || alt1 == neck || alt2 == neck);
	if (spot == both_hands)
		spot = lhand;
	else if (spot == lrgloves)
		spot = lfinger;
	else if (spot == neck)
		spot = amulet;
	else if (spot == scabbard)
		spot = belt;

	// If occupied, can't place
	if (spots[spot])
		return false;
	// If want to use 2h or a 2h is already equiped, can't go in right
	else if ((rtype == both_hands || two_handed) && spot == rhand)
		return false;
	// If want to use 2f or a 2f is already equiped, can't go in right or gloves
	else if ((rtype == lrgloves || two_fingered) &&
	         (spot == rfinger || spot == gloves))
		return false;
	// If want to use scabbard or a scabbard is already equiped, can't go in others
	else if ((can_scabbard || use_scabbard) &&
	         (spot == back_2h || spot == back_shield))
		return false;
	// If want to use neck or neck is already filled, can't go in cloak
	else if ((can_neck || use_neck) && spot == cloak)
		return false;
	// Can't use 2h in left if right occupied
	else if (rtype == both_hands && spot == lhand && spots[rhand])
		return false;
	// Can't use 2f in left if right occupied
	else if (rtype == lrgloves && spot == lfinger && spots[rfinger])
		return false;
	// Can't use scabbard in belt if back 2h or back shield occupied
	else if (can_scabbard && spot == belt &&
	         (spots[back_2h] || spots[back_shield]))
		return false;
	// Can't use neck in amulet if cloak occupied
	else if (can_neck && spot == amulet && spots[cloak])
		return false;
	// If in left or right hand allow it
	else if (spot == lhand || spot == rhand)
		return true;
	// Special Checks for Belt
	else if (spot == belt) {
		if (inf.is_spell() || can_scabbard)
			return true;
	}
	// Special Checks for back 2h and back shield
	else if (spot == back_2h || spot == back_shield) {
		if (can_scabbard)
			return true;
	}
	// Special Checks for amulet and cloak
	else if (spot == amulet || spot == cloak) {
		if (can_neck)
			return true;
	}

	// Lastly if we have gotten here, check the paperdoll table
	return inf.is_object_allowed(obj->get_framenum(), spot);
}

/*
 *  Find the spot(s) where an item would prefer to be readied
 *
 *  Output: prefered slot, alternative slots
 */

void Actor::get_prefered_slots(
    Game_object *obj,
    int &prefered,
    int &alt1,
    int &alt2
) const {
	const Shape_info &info = obj->get_info();

	// Defaults
	prefered = info.get_ready_type();
	alt1 = info.get_alt_ready1();
	alt2 = info.get_alt_ready2();
	if (alt1 == invalid_spot)
		alt1 = lhand;
	if (alt2 == invalid_spot)
		alt2 = lhand;

	if (prefered == lhand) {
		if (info.is_object_allowed(obj->get_framenum(), rhand))
			if (!info.is_object_allowed(obj->get_framenum(), lhand))
				prefered = rhand;
			else
				alt1 = rhand;
		else
			alt1 = rhand;
	}
}


/*
 *  Find the best spot where an item may be readied.
 *
 *  Output: Index, or -1 if none found.
 */

int Actor::find_best_spot(
    Game_object *obj
) {
	int prefered;
	int alternate1;
	int alternate2;

	// Get the preferences
	get_prefered_slots(obj, prefered, alternate1, alternate2);

	// Check Prefered
	if (fits_in_spot(obj, prefered)) return prefered;
	// Alternate
	else if (alternate1 >= 0 && fits_in_spot(obj, alternate1)) return alternate1;
	// Second alternate
	else if (alternate2 >= 0 && fits_in_spot(obj, alternate2)) return alternate2;
	// Belt
	else if (fits_in_spot(obj, belt)) return belt;
	// Back - required???
	else if (fits_in_spot(obj, backpack)) return backpack;
	// Back2h
	else if (fits_in_spot(obj, back_2h)) return back_2h;
	// Sheild Spot
	else if (fits_in_spot(obj, back_shield)) return back_shield;
	// Left Hand
	else if (fits_in_spot(obj, lhand)) return lhand;
	// Right Hand
	else if (fits_in_spot(obj, rhand)) return rhand;

	return -1;
}

/*
 *  Get previous schedule type.
 *
 *  Output: Prev. schedule #, or -1 if not known.
 */

int Actor::get_prev_schedule_type(
) const {
	return schedule ? schedule->get_prev_type() : -1;
}

/*
 *  Restore actor's schedule after reading.  This CANNOT be called from
 *  a constructor, since it may call virtual methods when setting up
 *  the schedule.
 */

void Actor::restore_schedule(
) {
	// Make sure it's in valid chunk.
	Map_chunk *olist = get_chunk();
	// Activate schedule if not in party.
	if (olist && !is_in_party()) {
		if (next_schedule != 255 &&
		        schedule_type == Schedule::walk_to_schedule)
			set_schedule_and_loc(next_schedule, schedule_loc);
		else {
			old_schedule_loc = schedule_loc;
			restored_schedule = schedule_type;
			set_schedule_type(schedule_type);
		}
	}
}

/*
 *  Set new schedule by type.
 */

void Actor::set_schedule_type(
    int new_schedule_type,
    Schedule *newsched      // New sched., or nullptr to create here.
) {
	// Don't stop path_run_usecode unless it is done.
	If_else_path_actor_action *act = action ? action->as_usecode_path() : nullptr;
	if (!act || act->is_done()) {
		stop();             // Stop moving
		set_action(nullptr);      // Clear out old action.
	}
	if (schedule)           // Finish up old if necessary.
		schedule->ending(new_schedule_type);
	// Save old for a moment.
	auto old_schedule =
	    static_cast<Schedule::Schedule_types>(schedule_type);
	delete schedule;        // Done with the old.
	schedule = newsched;
	if (!schedule)
		switch (static_cast<Schedule::Schedule_types>(new_schedule_type)) {
		case Schedule::combat:
			schedule = new Combat_schedule(this, old_schedule);
			break;
		case Schedule::horiz_pace:
			ready_best_weapon();
			schedule = Pace_schedule::create_horiz(this);
			break;
		case Schedule::vert_pace:
			ready_best_weapon();
			schedule = Pace_schedule::create_vert(this);
			break;
		case Schedule::talk:
			schedule = new Talk_schedule(this);
			break;
		case Schedule::dance:
			empty_hands();
			schedule = new Dance_schedule(this);
			break;
		case Schedule::farm:    // Use a scythe.
			schedule = new Farmer_schedule(this);
			break;
		case Schedule::tend_shop:// For now.
			empty_hands();
			schedule = new Loiter_schedule(this, 3);
			break;
		case Schedule::miner:   // Use a pick.
			schedule = new Miner_schedule(this);
			break;
		case Schedule::hound:
			ready_best_weapon();
			schedule = new Hound_schedule(this);
			break;
		case Schedule::loiter:
			schedule = new Loiter_schedule(this);
			break;
		case Schedule::graze:   // For now.
			schedule = new Graze_schedule(this);
			break;
		case Schedule::wander:
			schedule = new Wander_schedule(this);
			break;
		case Schedule::blacksmith:
			schedule = new Forge_schedule(this);
			break;
		case Schedule::sleep:
			if (party_id < 0 && npc_num != 0)
				empty_hands();
			schedule = new Sleep_schedule(this);
			break;
		case Schedule::wait:
			schedule = new Wait_schedule(this);
			break;
		case Schedule::eat:
			empty_hands();
			schedule = new Eat_schedule(this);
			break;
		case Schedule::sit:
			empty_hands();
			schedule = new Sit_schedule(this);
			break;
		case Schedule::bake:
			schedule = new Bake_schedule(this);
			break;
		case Schedule::sew:
			schedule = new Sew_schedule(this);
			break;
		case Schedule::shy:
			empty_hands();
			schedule = new Shy_schedule(this);
			break;
		case Schedule::lab:
			schedule = new Lab_schedule(this);
			break;
		case Schedule::thief:
			empty_hands();
			schedule = new Thief_schedule(this);
			break;
		case Schedule::waiter:
			empty_hands();
			schedule = new Waiter_schedule(this);
			break;
		case Schedule::kid_games:
			empty_hands();
			schedule = new Kid_games_schedule(this);
			break;
		case Schedule::eat_at_inn:
			empty_hands();
			schedule = new Eat_at_inn_schedule(this);
			break;
		case Schedule::duel:
			schedule = new Duel_schedule(this);
			break;
		case Schedule::preach:
			ready_best_weapon();    // Fellowship staff.
			schedule = new Preach_schedule(this);
			break;
		case Schedule::patrol:
			ready_best_weapon();
			schedule = new Patrol_schedule(this);
			break;
		case Schedule::desk_work:
			empty_hands();
			schedule = new Desk_schedule(this);
			break;
		case Schedule::follow_avatar:
			schedule = new Follow_avatar_schedule(this);
			break;
		case Schedule::walk_to_schedule:
			cerr << "Attempted to set a \"walk to schedule\" activity for NPC " << get_npc_num() << endl;
			break;
		case Schedule::arrest_avatar:
			schedule = new Arrest_avatar_schedule(this);
			break;
		default:
			if (new_schedule_type >=
			        Schedule::first_scripted_schedule)
				schedule = new Scripted_schedule(this,
				                                 new_schedule_type);
			break;
		}
	// Set AFTER creating new schedule.
	schedule_type = new_schedule_type;

	// Reset Next Schedule
	schedule_loc = Tile_coord(0, 0, 0);
	next_schedule = 255;

	if (!gmap->is_chunk_read(get_cx(), get_cy())) {
		dormant = true;     // Chunk hasn't been read in yet.
		if (schedule)
			schedule->im_dormant();
	} else if (schedule) {  // Try to start it.
		dormant = false;
		schedule->now_what();
	}
}

/*
 *  Cache out an actor.
 *  Resets the schedule, and makes the actor dormant
 */
void Actor::cache_out() {
	// This is a bit of a hack, but it works well enough
	if (get_schedule_type() != Schedule::walk_to_schedule)
		set_schedule_type(get_schedule_type());
}

bool Actor::teleport_offscreen_to_schedule(Tile_coord const &dest, int dist) {
	int mapnum = get_map_num();
	if (mapnum < 0)
		mapnum = gmap->get_num();
	if ((mapnum != gmap->get_num()) ||
	        (!gmap->is_chunk_read(get_cx(), get_cy()) &&
	         !gmap->is_chunk_read(dest.tx / c_tiles_per_chunk,
	                              dest.ty / c_tiles_per_chunk))) {
		// Not on current map, or
		//   src, dest. are off the screen
		// Teleport if more than dist tiles from target
		if (distance(dest) > dist) {
			move(dest.tx, dest.ty, dest.tz, mapnum);
			change_frame(get_dir_framenum(Actor::standing));
		}
		return true;
	}
	return false;
}

/*
 *  Set new schedule by type AND location.
 */

void Actor::set_schedule_and_loc(int new_schedule_type, Tile_coord const &dest,
                                 int delay) { // -1 for random delay.
	stop();             // Stop moving.
	if (schedule)           // End prev.
		schedule->ending(new_schedule_type);
	old_schedule_loc = dest;
	if (teleport_offscreen_to_schedule(dest, 12)) {
		set_schedule_type(new_schedule_type);
		return;
	}
	// Going to walk there.
	schedule_loc = dest;
	next_schedule = new_schedule_type;
	if (schedule_type == Schedule::walk_to_schedule)
		set_action(nullptr);  // Force NPC to go to the right place.
	schedule_type = Schedule::walk_to_schedule;
	delete schedule;
	schedule = new Walk_to_schedule(this, dest, next_schedule, delay);
	dormant = false;
	schedule->now_what();
}

static bool in_goblin_village(Actor const *npc) {
	// These boundaries are exact, as far as I can tell; hack-move to the
	// rescue.
	static const TileRect gobvillage(576, 1200, 256, 336);
	Tile_coord loc = npc->get_tile();
	return GAME_SI && gobvillage.has_world_point(loc.tx, loc.ty);
}

/*
 *  Get alignment, taking into account 'charmed' flag.
 */

int Actor::get_effective_alignment(
) const {
	bool avatar = (this == gwin->get_main_actor());
	if (!(flags & (1 << Obj_flags::charmed)) ||
	        (avatar && !Combat::charmed_more_difficult)) {
		// Hack warning: there are some neutral goblins in the goblin village.
		// Here, we 'fix' their alignments to cause them to attack the avatar.
		// The only theory I have to explain why these neutral goblins exist is
		// that it *seems* that only neutral NPCs called guards in the original,
		// and 'call guards in the goblin' village means 'making everyone nearby
		// attack the avatar'.
		// Lets not do this for non-goblins, party members (even if goblins),
		// the avatar, or if in a dungeon -- the boundaries of 'goblin village'
		// overlap some of the surrounding dungeons, and this behavior might not
		// be desired there.
		if (avatar || party_id >= 0 || !is_goblin() || gwin->is_in_dungeon())
			return alignment;

		if (in_goblin_village(this))
			return evil;
		else
			return alignment;
	} else
		return charmalign;
}

/*
 *  Set effective alignment.
 */

void Actor::set_effective_alignment(
    int newalign
) {
	charmalign = newalign;
	if (!(flags & (1 << Obj_flags::charmed)))
		alignment = newalign;
	else
		set_charmed_combat();
}

/*
 *  Render.
 */

void Actor::paint(
) {
	int flag = GAME_BG ? Obj_flags::bg_dont_render : Obj_flags::dont_render;
	if (cheat.in_map_editor() || !(flags & (1L << flag))) {
		int xoff;
		int yoff;
		gwin->get_shape_location(this, xoff, yoff);
		bool invis = flags & (1L << Obj_flags::invisible);
		if (invis && party_id < 0 && npc_num != 0)
			return; // Don't render invisible NPCs not in party.
		else if (invis)
			paint_invisible(xoff, yoff);
		else
			paint_shape(xoff, yoff, true);

		paint_weapon();
		if (hit)        // Want a momentary red outline.
			ShapeID::paint_outline(xoff, yoff, HIT_PIXEL);
		else if (flags & ((1L << Obj_flags::protection) |
		                  (1L << Obj_flags::poisoned) | (1 << Obj_flags::cursed) |
		                  (1 << Obj_flags::charmed) | (1 << Obj_flags::paralyzed))) {
			if (flags & (1L << Obj_flags::charmed))
				ShapeID::paint_outline(xoff, yoff,
				                       CHARMED_PIXEL);
			else if (flags & (1L << Obj_flags::paralyzed))
				ShapeID::paint_outline(xoff, yoff,
				                       PARALYZE_PIXEL);
			else if (flags & (1L << Obj_flags::protection))
				ShapeID::paint_outline(xoff, yoff,
				                       PROTECT_PIXEL);
			else if (flags & (1L << Obj_flags::cursed))
				ShapeID::paint_outline(xoff, yoff, CURSED_PIXEL);
			else
				ShapeID::paint_outline(xoff, yoff, POISON_PIXEL);
		}
	}
}
/*
 *  Draw the weapon in the actor's hand (if any).
 */
void Actor::paint_weapon(
) {
	int weapon_x;
	int weapon_y;
	int weapon_frame;
	if (figure_weapon_pos(weapon_x, weapon_y, weapon_frame)) {
		int shnum = get_effective_weapon_shape();
		ShapeID wsid(shnum, weapon_frame);
		Shape_frame *wshape = wsid.get_shape();
		if (!wshape) {
			weapon_rect.w = 0;
			return;
		}
		// Set dirty area rel. to NPC.
		weapon_rect = gwin->get_shape_rect(wshape, weapon_x, weapon_y);
		// Paint the weapon shape using the actor's coordinates
		int xoff;
		int yoff;
		gwin->get_shape_location(this, xoff, yoff);
		xoff += weapon_x;
		yoff += weapon_y;

		if (flags & (1L << Obj_flags::invisible))
			wsid.paint_invisible(xoff, yoff);
		else
			wsid.paint_shape(xoff, yoff);
	} else
		weapon_rect.w = 0;
}

/*
 *  Figure weapon drawing info.  We need this in advance to set the dirty
 *  rectangle.
 *
 *  Output: false if don't need to paint weapon.
 */
/* Weapon frames:
    0 - normal item
    1 - in hand, actor facing north/south
    2 - attacking (pointing north)
    3 - attacking (pointing east)
    4 - attacking (pointing south)
*/

bool Actor::figure_weapon_pos(
    int &weapon_x, int &weapon_y,   // Pos. rel. to NPC.
    int &weapon_frame
) {
	unsigned char actor_x;
	unsigned char actor_y;
	unsigned char wx;
	unsigned char wy;
	if ((spots[lhand] == nullptr) && (get_casting_mode() != Actor::show_casting_frames))
		return false;
	// Get offsets for actor shape
	int myframe = get_framenum();
	get_info().get_weapon_offset(myframe & 0x1f, actor_x,
	                             actor_y);
	// Get weapon frames for actor frame:
	switch (myframe & 0x1f) {
	case 4:
	case 7:
	case 22:
	case 25:
		weapon_frame = 4;
		break;
	case 5:
	case 8:
	case 21:
	case 24:
		weapon_frame = 3;
		break;
	case 6:
	case 9:
	case 20:
	case 23:
		weapon_frame = 2;
		break;
		//The next cases (before the default) are here to make use of all
		//the frames of the "casting frames" shape (shape 859):
	case 14:
	case 30:
		weapon_frame = 5;
		break;
	case 15:
		weapon_frame = 6;
		break;
	case 31:
		weapon_frame = 7;
		break;

	default:
		weapon_frame = 1;
	}
	weapon_frame |= (myframe & 32);

	// Get offsets for weapon shape
	int shnum = get_effective_weapon_shape();
	const Shape_info &info = ShapeID::get_info(shnum);
	info.get_weapon_offset(weapon_frame & 0xf, wx, wy);

	// actor_x will be 255 if (for example) the actor is lying down
	// wx will be 255 if the actor is not holding a proper weapon
	if (actor_x != 255 && wx != 255) {
		// Store offsets rel. to NPC.
		weapon_x = wx - actor_x;
		weapon_y = wy - actor_y;
		// Need to swap offsets if actor's shape is reflected
		if (myframe & 32)
			swap(weapon_x, weapon_y);
		// Combat frames are already done.
		return true;
	} else
		return false;
}

/*
 *  Run usecode when double-clicked.
 */
void Actor::activate(
    int event
) {
	if (edit())
		return;

	bool show_party_inv = gumpman->showing_gumps(true) ||
	                      gwin->in_combat();
	auto sched =
	    static_cast<Schedule::Schedule_types>(get_schedule_type());
	if (party_id >= 0 && !can_act_charmed() &&    // if in party, charmed, and charmed more difficult
	        !cheat.in_pickpocket() && event == 1) // and not pickpocket, return if double click
		return;
	if (!npc_num ||     // Avatar
	        (show_party_inv && party_id >= 0) || // Party
	        // Pickpocket cheat && double click
	        (cheat.in_pickpocket() && event == 1))
		show_inventory();
	// Asleep (but not awakened)?
	else if ((sched == Schedule::sleep &&
	          (get_framenum() & 0xf) == Actor::sleep_frame) ||
	         get_flag(Obj_flags::asleep))
		return;
	else if (sched == Schedule::combat && party_id < 0)
		return;         // Too busy fighting.
	// Usecode
	// Failed copy-protection?
	else if (gwin->failed_copy_protection())
		ucmachine->call_usecode(FailCopyProtectionUsecode, this,
		                        static_cast<Usecode_machine::Usecode_events>(event));
	else if (usecode == -1)
		ucmachine->call_usecode(get_usecode(), this,
		                        static_cast<Usecode_machine::Usecode_events>(event));
	else if (party_id >= 0 || !gwin->is_time_stopped())
		ucmachine->call_usecode(get_usecode(), this,
		                        static_cast<Usecode_machine::Usecode_events>(event));

}

/*
 *  Edit in ExultStudio.
 *
 *  Output: True if map-editing & ES is present.
 */

bool Actor::edit(
) {
#ifdef USE_EXULTSTUDIO
	if (client_socket >= 0 &&   // Talking to ExultStudio?
	        cheat.in_map_editor()) {
		editing.reset();
		Tile_coord t = get_tile();
		int num_schedules;  // Set up schedule-change list.
		Schedule_change *changes;
		get_schedules(changes, num_schedules);
		Serial_schedule schedules[8];
		for (int i = 0; i < num_schedules; i++) {
			schedules[i].time = changes[i].get_time();
			schedules[i].type = changes[i].get_type();
			Tile_coord p = changes[i].get_pos();
			schedules[i].tx = p.tx;
			schedules[i].ty = p.ty;
			schedules[i].tz = p.tz;
		}
		if (Npc_actor_out(client_socket, this, t.tx, t.ty, t.tz,
		                  get_shapenum(), get_framenum(), get_face_shapenum(),
		                  name, npc_num, ident, usecode, usecode_name, properties,
		                  attack_mode, alignment, flags, flags2, type_flags,
		                  num_schedules, schedules) != -1) {
			cout << "Sent npc data to ExultStudio" << endl;
			editing = shared_from_this();
		} else
			cout << "Error sending npc data to ExultStudio" << endl;
		return true;
	}
#endif
	return false;
}

/*
 *  Message to update from ExultStudio.
 */

void Actor::update_from_studio(
    unsigned char *data,
    int datalen
) {
#ifdef USE_EXULTSTUDIO
	Actor *npc;
	int tx;
	int ty;
	int tz;
	int shape;
	int frame;
	int face;
	std::string name;
	short npc_num;
	short ident;
	int usecode;
	std::string usecodefun;
	int properties[12];
	short attack_mode;
	short alignment;
	unsigned long oflags;       // Object flags.
	unsigned long xflags;       // Extra object flags.
	unsigned long type_flags;   // Movement flags.
	short num_schedules;
	Serial_schedule schedules[8];
	if (!Npc_actor_in(data, datalen, npc, tx, ty, tz, shape, frame,
	                  face, name, npc_num, ident, usecode, usecodefun,
	                  properties, attack_mode, alignment,
	                  oflags, xflags, type_flags, num_schedules, schedules)) {
		cout << "Error decoding npc" << endl;
		return;
	}
	if (npc && npc != editing.get()) {
		cout << "Npc from ExultStudio is not being edited" << endl;
		return;
	}
	// Keeps NPC alive until end of function
	Game_object_shared keep = std::move(editing);
	if (!npc) {         // Create a new one?
		int x;
		int y;
		if (!Get_click(x, y, Mouse::hand, nullptr)) {
			if (client_socket >= 0)
				Exult_server::Send_data(client_socket, Exult_server::cancel);
			return;
		}
		// Create.  Gets initialized below.
		Actor_shared act = std::make_shared<Npc_actor>(name, shape, npc_num, usecode);
		npc = act.get();
		keep = std::move(act);
		npc->usecode_name = usecodefun;
		if (!usecodefun.empty())
			npc->usecode = ucmachine->find_function(usecodefun.c_str(), true);
		npc->usecode_assigned = npc_num >= 256 && npc->usecode != -1 &&

		        npc->usecode != 0x400 + npc_num;

		npc->set_invalid(); // Set to invalid position.
		int lift;       // Try to drop at increasing hts.
		for (lift = 0; lift < 12; lift++)
			if (gwin->drop_at_lift(npc, x, y, lift))
				break;
		if (lift == 12) {
			if (client_socket >= 0)
				Exult_server::Send_data(client_socket, Exult_server::cancel);
			delete npc;
			return;
		}
		gwin->add_npc(npc, npc_num);
		if (client_socket >= 0)
			Exult_server::Send_data(client_socket, Exult_server::user_responded);
	} else {            // Old.
		npc->add_dirty();
		npc->usecode_name = usecodefun;
		if (!usecodefun.empty())
			npc->usecode = ucmachine->find_function(usecodefun.c_str(), true);
		else
			npc->usecode = usecode;
		npc->usecode_assigned = npc_num >= 256 && npc->usecode != -1 &&

		        npc->usecode != 0x400 + npc_num;

		npc->set_npc_name(name.c_str());
	}
	// Ensure proper initialization of frame #:
	npc->set_shape(shape, frame);
	npc->add_dirty();
	npc->face_num = face;
	npc->set_ident(ident);
	int i;
	for (i = 0; i < 12; i++)
		npc->set_property(i, properties[i]);
	npc->set_attack_mode(static_cast<Actor::Attack_mode>(attack_mode));
	npc->set_alignment(alignment);
	if (!(npc->flags & (1 << Obj_flags::charmed)))
		npc->charmalign = alignment;
	npc->flags = oflags;
	npc->flags2 = xflags;
	npc->type_flags = type_flags;
	npc->set_actor_shape();
	Schedule_change *scheds = num_schedules ?
	                          new Schedule_change[num_schedules] : nullptr;
	for (i = 0; i < num_schedules; i++)
		scheds[i].set(schedules[i].tx, schedules[i].ty,
		              schedules[i].tz,
		              schedules[i].type, schedules[i].time);
	npc->set_schedules(scheds, num_schedules);
	// Force Avatar and party members to be good
	if (npc_num == 0 || npc->get_flag(Obj_flags::in_party))
		npc->set_alignment(good);
	cout << "Npc updated" << endl;
#else
	ignore_unused_variable_warning(data, datalen);
#endif
}


void Actor::show_inventory() {
	Gump_manager *gump_man = gumpman;

	int shapenum = inventory_shapenum();
	if (shapenum >= 0)
		gump_man->add_gump(this, shapenum, true);
}

int Actor::inventory_shapenum() {
	// We are serpent if we can use serpent isle paperdolls
	bool serpent = (sman->can_use_paperdolls() && sman->are_paperdolls_enabled());

	if (!serpent) {
		// Can't display paperdolls (or they are disabled)
		// Use BG gumps
		int gump = get_info().get_gump_shape();
		if (gump < 0)
			gump = ShapeID::get_info(get_sexed_coloured_shape()).get_gump_shape();
		if (gump < 0)
			gump = ShapeID::get_info(get_shape_real()).get_gump_shape();
		if (gump < 0) {
			int shape = get_type_flag(Actor::tf_sex) ?
			            Shapeinfo_lookup::GetFemaleAvShape() :
			            Shapeinfo_lookup::GetMaleAvShape();
			gump = ShapeID::get_info(shape).get_gump_shape();
		}
		if (gump < 0)
			// No gump at ALL; should never happen...
			return 65;  // Default to male (Pickpocket Cheat)

		return gump;
	} else /* if (serpent) */
		return 123;     // Show paperdolls
}


/*
 *  Drop another onto this.
 *
 *  Output: false to reject, true to accept.
 */

bool Actor::drop(
    Game_object *obj        // MAY be deleted (if combined).
) {
	if (is_in_party()) { // In party?
		bool res = add(obj, false, true);// We'll take it, and combine.
		int ind = find_readied(obj);
		if (ind >= 0)
			call_readied_usecode(ind, obj, Usecode_machine::readied);
		return res;
	} else
		return false;
}

/*
 *  Get name.
 */

string Actor::get_name(
) const {
	return !get_flag(Obj_flags::met) ? Game_object::get_name() : get_npc_name();
}

/*
 *  Get npc name.
 */

string Actor::get_npc_name(
) const {
	return name.empty() ? Game_object::get_name() : name;
}

/*
 *  Set npc name.
 */

void Actor::set_npc_name(const char *n) {
	name = n;
}

/*
 *  Set property.
 */
void Actor::set_property(
    int prop,
    int val
) {
	if (prop == health && ((party_id != -1) || (npc_num == 0)) &&
	        cheat.in_god_mode() && val < properties[prop])
		return;
	switch (static_cast<Item_properties>(prop)) {
	case exp: {
		// Experience?  Check for new level.
		int old_level = get_level();
		properties[static_cast<int>(exp)] = val;
		int delta = get_level() - old_level;
		if (delta > 0)
			properties[static_cast<int>(training)] += 3 * delta;
		break;
	}
	case food_level:
		if (val > 31)       // Never seems to get above this.
			val = 31;
		else if (val < 0)
			val = 0;
		properties[prop] = val;
		break;
	case combat:            // limited to 30.
		properties[prop] = val > 30 ? 30 : val;
		break;
	case magic: {
		int old_val = properties[prop];
		properties[prop] = val > 30 ? 30 : val; // limited to 30.
		// check if magic changes to and from 0
		if(is_in_party() && old_val != val && (old_val == 0 || val == 0))
			Face_stats::UpdateButtons();
		break;
	} case training:          // Don't let this go negative.
		properties[prop] = val < 0 ? 0 : val;
		break;
	case sex_flag:
		// Doesn't seem to be settable in original BG except by hex-editing
		// the save game, but there is no problem in allowing it in Exult.
		if (val != 0)
			set_type_flag(tf_sex);
		else
			clear_type_flag(tf_sex);
		break;
	default:
		if (prop >= 0 && prop < missile_weapon)
			properties[prop] = val;
		break;
	}
	if (gumpman->showing_gumps())
		gwin->set_all_dirty();
}

/*
 *  A class whose whole purpose is to stop casting mode.
 */
class Clear_casting : public Time_sensitive {
    Game_object_weak actor;
public:
	Clear_casting(Actor *a) : actor(weak_from_obj(a))
	{  }
	void handle_event(unsigned long curtime, uintptr udata) override;
};

void Clear_casting::handle_event(unsigned long curtime, uintptr) {
	ignore_unused_variable_warning(curtime);
	Actor_shared a = std::static_pointer_cast<Actor>(actor.lock());
	if (a) {
	    a->add_dirty();
	    a->hide_casting_frames();
	    a->add_dirty();
	}
	delete this;
}

void Actor::end_casting_mode(int delay) {
	auto *c = new Clear_casting(this);
	gwin->get_tqueue()->add(Game::get_ticks() + 2 * delay, c, this);
}

/*
 *  A class whose whole purpose is to clear the 'hit' flag.
 */
class Clear_hit : public Time_sensitive {
    Game_object_weak actor;
public:
	Clear_hit(Actor *a) : actor(weak_from_obj(a))
	{  }
	void handle_event(unsigned long curtime, uintptr udata) override;
};

void Clear_hit::handle_event(unsigned long curtime, uintptr) {
	ignore_unused_variable_warning(curtime);
	Actor_shared a = std::static_pointer_cast<Actor>(actor.lock());
	if (a) {
	    a->hit = false;
	    a->add_dirty();
	}
	delete this;
}

bool Actor::can_act() {
	return !(get_flag(Obj_flags::paralyzed) || get_flag(Obj_flags::asleep)
	         || is_dead() || is_knocked_out());
}

bool Actor::can_act_charmed() {
	return !(Combat::charmed_more_difficult && get_effective_alignment() != good);
}

/*
 *  Have charmed party members attack if charmed_more_difficult and party member is hostile
 */

void Actor::set_charmed_combat() {
	if (Combat::charmed_more_difficult &&
	    (is_in_party() || this == gwin->get_main_actor()) &&
	    get_effective_alignment() != good) {
		set_schedule_type(Schedule::combat);
		if (get_attack_mode() == flee)
			set_attack_mode(nearest);
	}
}

void Actor::fight_back(
    Game_object *attacker
) {
	// ++++ TODO: I think that nearby NPCs will help NPCs (or party members,
	// as the case may be) of the same alignment when attacked by other NPCs,
	// not just when the avatar & party attack. Although this is tricky to
	// test (except, maybe, by exploiting the agressive U7 & SI duel schedule.
	Actor *npc = attacker ? attacker->as_actor() : nullptr;
	// No attacker, or friendly fire, should not cause a fight.
	if (!npc || get_effective_alignment() == npc->get_effective_alignment())
		return;
	if (is_in_party() && (gwin->in_combat() || !gwin->main_actor_can_act())) {
		if (!gwin->in_combat())
			gwin->toggle_combat();
		Actor *party[9];        // Get entire party, including Avatar.
		int cnt = gwin->get_party(party, 1);
		for (int i = 0; i < cnt; i++) {
			int sched = party[i]->get_schedule_type();
			if (sched != Schedule::combat && sched != Schedule::wait
			        && sched != Schedule::loiter)
				party[i]->set_schedule_type(Schedule::combat);
		}
	}
	if (!target.lock() && !is_in_party())
		set_target(npc, npc->get_schedule_type() != Schedule::duel);
	// Being a bully?
	if (npc->is_in_party() && !is_in_party() && is_sentient()) {
		Actor *witness = this;
		Actor *closest = nullptr;
		int align = get_effective_alignment();
		// Attack avatar if the NPC is not disabled...
		if (can_act() ||
		        // ... or if there is a sympathetic witness or local guard...
		        (witness = gwin->find_witness(closest, align)) != nullptr ||
		        // ... or if there is someone sympathetic nearby who heard it.
		        ((witness = closest) != nullptr && rand() % 10 == 0)) {
			static long lastcall = 0L;  // Last time yelled.
			long curtime = SDL_GetTicks();
			long delta = curtime - lastcall;
			// Call if 10 secs. has passed or by the luck of the die.
			if ((delta > 10000) || (rand() % 20 == 0)) {
				int numguards = 0;
				int gshape = Game_window::get_guard_shape();
				// No guards in dungeons or if gshape < 0.
				if (!gwin->is_in_dungeon() && gshape >= 0 &&
				        // And only neutral NPCs and guards call more guards.
				        (witness->get_shapenum() == gshape ||
				         align == Actor::neutral))
					numguards = 1 + rand() % 2;

				eman->remove_text_effect(this);
				if (numguards > 0) {
					// Call guards.
					if (witness->is_goblin())
						witness->say(first_goblin_call_police, last_goblin_call_police);
					else if (witness->can_speak())
						witness->say(first_call_police, last_call_police);
				} else {
					// Cry for help.
					if (witness->is_goblin())
						witness->say(goblin_need_help);
					else if (witness->can_speak())
						witness->say(first_need_help, last_need_help);
				}
				// To reduce the guard pile-up.
				lastcall = curtime;
				gwin->attack_avatar(numguards, align);
			}
		}
	}
}

/*
 *  This method should be called to cause damage from traps, attacks.
 *
 *  Output: Hits taken. If exp is nonzero, experience value if defeated.
 */

int Actor::apply_damage(
    Game_object *attacker,  // Attacker, or null.
    int str,        // Attack strength.
    int wpoints,    // Weapon bonus.
    int type,       // Damage type.
    int bias,       // Different combat difficulty.
    int *exp
) {
	if (exp)
		*exp = 0;
	int damage = bias;
	str /= 3;

	// In the original, wpoints == 127 does fixed 127 damage.
	// Allowing for >= 127 in Exult, as the original seems to
	// use only a byte for damage/health.
	if (wpoints >= 127)
		damage = 127;
	else {
		// Lightning damage ignores strength.
		if (type != Weapon_data::lightning_damage && str > 0)
			damage += (1 + rand() % str);
		if (wpoints > 0)
			damage += (1 + rand() % wpoints);
	}

	int armor = -bias;
	const Monster_info *minf = get_info().get_monster_info();
	// Monster armor protects only in UI_apply_damage.
	if (minf)
		armor += minf->get_armor();

	// Armor defense and immunities only affect UI_apply_damage.
	const int num_spots = array_size(spots);
	for (int i = 0; i < num_spots; i++) {
		Game_object *obj = spots[i];
		if (obj) {
			const Shape_info &info = obj->get_info();
			armor += info.get_armor();
			if ((info.get_armor_immunity() & (1 << type)) != 0) {
				// Armor gives immunity.
				// Metal clang.
				Object_sfx::Play(this, Audio::game_sfx(5));
				// Attack back anyway.
				fight_back(attacker);
				return 0;   // No damage == no powers.
			}
		}
	}

	// Some attacks ignore armor (unless the armor gives immunity).
	if (wpoints == 127 || type == Weapon_data::lightning_damage ||
	        type == Weapon_data::ethereal_damage ||
	        type == Weapon_data::sonic_damage ||
	        armor < 0)  // Armor should never help the attacker.
		armor = 0;

	if (armor)
		damage -= (1 + rand() % armor);

	// Paralyzed/defenseless foes may take damage even if
	// the armor protects them. This code is guesswork,
	// but it matches statistical tests.
	if (damage <= 0 && !can_act()) {
		if (str > 0)
			damage = 1 + rand() % str;
		else
			damage = 0;
	}

	if (damage <= 0) {
		// No damage caused.
		Object_sfx::Play(this, Audio::game_sfx(5));

		// Flash red outline.
		hit = true;
		add_dirty();
		auto *c = new Clear_hit(this);
		gwin->get_tqueue()->add(Game::get_ticks() + 200, c, this);
		// Attack back.
		fight_back(attacker);
		return 0;   // No damage == no powers (usually).
	}

	return reduce_health(damage, type, attacker, exp);
}

/*
 *  This method should be called to decrement health directly.
 *
 *  Output: Hits taken. If exp is nonzero, experience value if defeated.
 */

int Actor::reduce_health(
    int delta,          // # points to lose.
    int type,       // Type of damage
    Game_object *attacker,      // Attacker, or null.
    int *exp
) {
	if (exp)
		*exp = 0;
	// Cheater, cheater.
	if (is_dead() || (cheat.in_god_mode() && ((party_id != -1) || (npc_num == 0))))
		return 0;

	const Monster_info *minf = get_info().get_monster_info_safe();
	Actor *npc = attacker ? attacker->as_actor() : nullptr;

	// Monster immunities DO affect UI_reduce_health, unlike
	// armor immunities.
	if (is_dead() || minf->cant_die() ||
	        (minf->get_immune() & (1 << type)) != 0) {
		// Monster data gives immunity to damage.
		// Attack back.
		fight_back(attacker);
		return 0;
	}

	// Monsters vulnerable to a damage type take 2x the damage.
	// The originals seem to limit damage to 127 points; we
	// set a lower bound on final health below.
	if ((minf->get_vulnerable() & (1 << type)) != 0)
		delta *= 2;

	int oldhp = properties[static_cast<int>(health)];
	int maxhp = properties[static_cast<int>(strength)];
	int val = oldhp - delta;
	if (val < -50) {
		// Limit how low it goes for safety.
		val = -50;
		delta = oldhp + 50;
	}
	// Don't set health yet!! (see tournament below for why)
	// The following thresholds are exact.
	if (this == gwin->get_main_actor() &&
	        // Flash red if Avatar badly hurt.
	        (delta >= maxhp / 3 || oldhp < maxhp / 4 ||
	         // Or if lightning damage.
	         type == Weapon_data::lightning_damage))
		gwin->get_pal()->flash_red();
	else {
		hit = true;     // Flash red outline.
		add_dirty();
		auto *c = new Clear_hit(this);
		gwin->get_tqueue()->add(Game::get_ticks() + 200, c, this);
	}
	if (oldhp >= maxhp / 2 && val < maxhp / 2 && rand() % 2 != 0) {
		// A little oomph.
		if (is_goblin())            // Goblin?
			say(goblin_ouch);
		else if (can_speak())
			say(first_ouch, last_ouch);
	}
	Game_object_vector vec;     // Create blood.
	const int blood = 912;      // TODO: de-hard-code this.
	// Bleed only for normal damage.
	if (type == Weapon_data::normal_damage && !minf->cant_bleed()
	        // Trying something new. Seems to match originals better, but
	        // it is hard to judge accurately (although 10 or more hits
	        // *always* cause bleeding).
	        && rand() % 10 < delta
	        && find_nearby(vec, blood, 1, 0) < 2) {
		// Create blood where actor stands.
		Game_object_shared bobj = gmap->create_ireg_object(blood, 0);
		bobj->set_flag(Obj_flags::is_temporary);
		bobj->move(get_tile());
	}
	if (val <= 0 && oldhp > 0 && get_flag(Obj_flags::tournament)) {
		// HPs are never reduced before tournament usecode
		// (this can be checked on weapon usecode, tournament
		// usecode or even UI_reduce_health directly followed
		// by UI_get_npc_prop).
		// THIS is why we haven't reduced health yet.
		// This makes foes with tournament flag EXTREMELLY
		// tough, particularly if they have high hit points
		// to begin with!
		// No more pushover banes!
		if (npc)    // Just to be sure.
			set_oppressor(npc->get_npc_num());
		ucmachine->call_usecode(get_usecode(), this,
		                        Usecode_machine::died);
		return 0;   // If needed, NPC usecode does the killing (possibly
		// by calling this function again).
	}

	// We do slimes here; they DO split through reduce_health intrinsic.
	// They also do *not* split if hit by damage they are vulnerable to.
	if (minf->splits() && val > 0 &&
	        (minf->get_vulnerable() & (1 << type)) == 0 && rand() % 2 == 0)
		clone();

	// Doing this here simplifies the tournament code, above.
	properties[static_cast<int>(health)] = val;
	bool defeated = is_dying() || (val <= 0 && oldhp > 0);

	if (defeated && exp) {
		// Verified: No experience for killing sleeping people.
		if (!get_flag(Obj_flags::asleep)) {
			int expval = 0;
			// Except for 2 details mentioned below, this formula
			// is an exact match to what the originals give.
			// We also have to do this *here*, before we kill the
			// NPC, because the equipment is deleted (spells) or
			// transferred to the dead body it leaves.
			int combval = properties[static_cast<int>(combat)];
			expval = properties[static_cast<int>(strength)] + combval +
			         (properties[static_cast<int>(dexterity)] + 1) / 3 +
			         properties[static_cast<int>(intelligence)] / 5;
			const Monster_info *minf = get_info().get_monster_info();
			int immune = minf ? minf->get_immune() : 0;
			int vuln = minf ? minf->get_vulnerable() : 0;
			if (minf)
				expval += minf->get_base_xp_value();

			if (!objects.is_empty()) {
				Game_object_vector vec;     // Get list of all possessions.
				vec.reserve(50);
				get_objects(vec, c_any_shapenum, c_any_qual, c_any_framenum);
				for (auto *obj : vec) {
					// This matches the original, but maybe
					// we should iterate through all items.
					// After all, a death bolt in the backpack
					// can still be dangerous...
					if (obj->get_owner() != this)
						continue;
					const Shape_info &inf = obj->get_info();
					expval += inf.get_armor();
					// Strictly speaking, the original does not give
					// XP for armor immunities; but I guess this is
					// mostly because very few armors give immunities
					// (ethereal ring, cadellite helm) and no monsters
					// use them anyway.
					// I decided to have them give a (non-cumulative)
					// increase in experience.
					immune |= inf.get_armor_immunity();
					const Weapon_info *winf = inf.get_weapon_info();
					if (!winf)
						continue;
					expval += winf->get_base_xp_value();
					// This was tough to figure out, but figured out it was;
					// it is a perfect match to what the original does.
					switch (winf->get_uses()) {
					case Weapon_info::melee: {
						int range = winf->get_range();
						expval += range > 5 ? 2 : (range > 3 ? 1 : 0);
						break;
					}
					case Weapon_info::poor_thrown:
						expval += combval / 5;
						break;
					case Weapon_info::good_thrown:
						expval += combval / 3;
						break;
					case Weapon_info::ranged:
						expval += winf->get_range() / 2;
						break;
					}
				}
			}
			// Originals don't do this, but hey... they *should*.
			// Also, being vulnerable to something you are immune
			// should not matter because immunities are checked first;
			// the originals don't do this check, but neither do they
			// have a monster vulnerable and immune to the same thing.
			vuln &= ~immune;
			expval += bitcount(immune);
			expval -= bitcount(vuln);
			// And the final touch (verified).
			expval /= 2;
			*exp = expval;
		}
	}

	// query this here because die() will reset is_in_party.
	bool in_party = is_in_party();

	if (is_dying())
		die(attacker);
	else if (val <= 0 && !get_flag(Obj_flags::asleep)) {
		Combat_schedule::stop_attacking_npc(this);
		set_flag(Obj_flags::asleep);
	} else if (npc && !target.lock() && !in_party) {
		set_target(npc, npc->get_schedule_type() != Schedule::duel);
		set_oppressor(npc->get_npc_num());
	}

	// Dead people caused attacks on the avatar back in Actor::die, so don't do
	// it again here.
	if (!is_dead())
		fight_back(attacker);
	return delta;
}

/*
 *  Causes the actor to fall to the ground and take damage.
 */

void Actor::fall_down() {
	if (!get_type_flag(tf_fly))
		return;
	int savetz = get_lift();
	Tile_coord start = get_tile();
	if (!Map_chunk::is_blocked(start, 1, MOVE_WALK, 100) &&
	        start.tz < savetz) {
		move(start.tx, start.ty, start.tz);
		reduce_health(1 + rand() % 5, Weapon_data::normal_damage);
	}
}

/*
 *  Causes the actor to lie down to sleep (or die).
 */

void Actor::lay_down(bool die) {
	if (!die && get_flag(Obj_flags::asleep))
		return;
	// Fall to the ground.
	fall_down();
	bool frost_serp = GAME_SI && get_shapenum() == 832;
	// Don't do it if already in sleeping frame.
	if (frost_serp && (get_framenum() & 0xf) == Actor::sit_frame)
		return;     // SI Frost serpents are weird.
	else if ((get_framenum() & 0xf) == Actor::sleep_frame)
		return;

	set_action(nullptr);
	auto *scr = new Usecode_script(this);
	(*scr) << Ucscript::finish << (Ucscript::npc_frame + Actor::standing);
	if (GAME_SI && get_shapenum() == 832) { // SI Frost serpent
		// Frames are in reversed order. This results in a
		// strangeanimation in the original, which we fix here.
		(*scr) << (Ucscript::npc_frame + Actor::sleep_frame)
		       << (Ucscript::npc_frame + Actor::kneel_frame)
		       << (Ucscript::npc_frame + Actor::bow_frame)
		       << (Ucscript::npc_frame + Actor::sit_frame);
	} else if (get_info().has_strange_movement()) {
		// BG Sea serpent; slimes are done elsewhere.
		(*scr) << (Ucscript::npc_frame + Actor::bow_frame)
		       << (Ucscript::npc_frame + Actor::kneel_frame)
		       << (Ucscript::npc_frame + Actor::sleep_frame);
	} else {
		(*scr) << (Ucscript::npc_frame + Actor::kneel_frame)
		       << Ucscript::sfx << Audio::game_sfx(86);
		if (!die)
			(*scr) << (Ucscript::npc_frame + Actor::sleep_frame);
	}
	if (die)    // If dying, remove.
		(*scr) << Ucscript::remove;
	scr->start();
}

/*
 *  Get a property.
 */

int Actor::get_property(int prop) const {
	if (prop == Actor::sex_flag)
		// Correct in BG and SI, but the flag is never normally set
		// for anyone but avatar in BG.
		return get_type_flag(Actor::tf_sex);
	else if (prop == Actor::missile_weapon) {
		// Seems to give the same results as in the originals.
		Game_object *weapon = get_readied(lhand);
		const Weapon_info *winf = weapon ? weapon->get_info().get_weapon_info() : nullptr;
		if (!winf)
			return 0;
		return winf->get_uses() >= 2;
	}
	return (prop >= 0 && prop < Actor::sex_flag) ? properties[prop] : 0;
}

/*
 *  Get a property, modified by flags.
 */

int Actor::get_effective_prop(
    int prop                // Property #.
) const {
	int val = get_property(prop);
	switch (prop) {
	case Actor::dexterity:
	case Actor::combat:
		if (get_flag(Obj_flags::paralyzed) || get_flag(Obj_flags::asleep) ||
		        is_knocked_out())
			return prop == Actor::dexterity ? 0 : 1;
		// FALL THROUGH
	case Actor::intelligence:
		if (is_dead())
			return prop == Actor::dexterity ? 0 : 1;
		else if (get_flag(Obj_flags::charmed) || get_flag(Obj_flags::asleep))
			val--;
		// FALL THROUGH
	case Actor::strength:
		if (get_flag(Obj_flags::might))
			val += (val < 15 ? val : 15);   // Add up to 15.
		if (get_flag(Obj_flags::cursed))
			val -= 3;   // Matches originals.
		break;
	}
	return val;
}

/*
 *  For mods and new games:  Set generic attribute keyed by a name.
 */

void Actor::set_attribute(
    const char *nm,
    int val
) {
	if (!atts)
		atts = new Actor_attributes;
	atts->set(nm, val);
}

/*
 *  Get generic attribute.  Returns 0 if not set.
 */

int Actor::get_attribute(
    const char *nm
) const {
	return atts ? atts->get(nm) : 0;
}

/*
 *  Get them all.
 */

void Actor::get_attributes(
    Atts_vector &attlist
) const {
	attlist.resize(0);
	if (atts)
		atts->get_all(attlist);
}

/*
 *  Read in attributes (from savegame file).
 */

void Actor::read_attributes(
    const unsigned char *buf,     // Attribute/value pairs.
    int len
) {
	const unsigned char *ptr = buf;
	const unsigned char *endbuf = buf + len;
	while (ptr < endbuf) {
		const char *att = reinterpret_cast<const char *>(ptr);
		ptr += strlen(att) + 1;
		assert(ptr + 2 <= endbuf);
		int val = Read2(ptr);
		set_attribute(att, val);
	}
}

/*
 *  Force actor to sleep.
 */

void Actor::force_sleep() {
	flags |= (static_cast<uint32>(1) << Obj_flags::asleep);
	need_timers()->start_sleep();
	set_action(nullptr);      // Stop what you're doing.
	lay_down(false);    // Lie down.
}

// Want to avoid full include.
extern bool Bg_dont_wake(Game_window *gwin, Actor *npc);

/*
 *  Set flag.
 */

void Actor::set_flag(
    int flag
) {
//	cout << "Set flag for NPC " << get_npc_num() << " = " << flag << endl;
	const Monster_info *minf = get_info().get_monster_info_safe();
	Actor *avatar = gwin->get_main_actor();
	switch (flag) {
	case Obj_flags::asleep:
		if (minf->sleep_safe() || minf->power_safe() ||
		        (gear_powers & (Frame_flags::power_safe | Frame_flags::sleep_safe)))
			return;     // Don't do anything.
		// Avoid waking Penumbra.
		if (schedule_type == Schedule::sleep && Bg_dont_wake(gwin, this))
			break;
		// Set timer to wake in a few secs.
		if (this != avatar && avatar->get_target() == this)
			avatar->set_target(nullptr);
		need_timers()->start_sleep();
		set_action(nullptr);      // Stop what you're doing.
		lay_down(false);    // Lie down.
		break;
	case Obj_flags::poisoned:
		if (minf->poison_safe() || (gear_powers & Frame_flags::poison_safe))
			return;     // Don't do anything.
		need_timers()->start_poison();
		break;
	case Obj_flags::protection:
		need_timers()->start_protection();
		break;
	case Obj_flags::might:
		need_timers()->start_might();
		break;
	case Obj_flags::cursed:
		if (minf->curse_safe() || minf->power_safe() ||
		        (gear_powers & (Frame_flags::power_safe | Frame_flags::curse_safe)))
			return;     // Don't do anything.
		need_timers()->start_curse();
		break;
	case Obj_flags::charmed:
		if (minf->charm_safe() || minf->power_safe() ||
		        (gear_powers & (Frame_flags::power_safe | Frame_flags::charm_safe)))
			return;     // Don't do anything.
		need_timers()->start_charm();
		// Actual alignment shift must be done elsewhere.
		Combat_schedule::stop_attacking_npc(this);
		set_target(nullptr);      // Need new opponent if in combat.
		break;
	case Obj_flags::paralyzed:
		if (minf->paralysis_safe() || minf->power_safe() ||
		        (gear_powers & (Frame_flags::power_safe | Frame_flags::paralysis_safe)))
			return;     // Don't do anything.
		fall_down();
		need_timers()->start_paralyze();
		break;
	case Obj_flags::invisible:
		flags |= (static_cast<uint32>(1) << flag);
		need_timers()->start_invisibility();
		Combat_schedule::stop_attacking_invisible(this);
		gclock->set_palette();
		break;
	case Obj_flags::dont_move:
	case Obj_flags::bg_dont_move:
		stop();         // Added 7/6/03.
		set_action(nullptr);  // Force actor to stop current action.
		break;
	case Obj_flags::naked: {
		// set_polymorph needs this, and there are no problems
		// in setting this twice.
		flags2 |= (static_cast<uint32>(1) << (flag - 32));
		if (get_npc_num() != 0) // Ignore for all but avatar.
			break;
		int sn;
		int female = get_type_flag(tf_sex) ? 1 : 0;
		Skin_data *skin = Shapeinfo_lookup::GetSkinInfoSafe(this);

		if (!skin ||    // Should never happen, but hey...
		        (!sman->have_si_shapes() &&
		         Shapeinfo_lookup::IsSkinImported(skin->naked_shape)))
			sn = Shapeinfo_lookup::GetBaseAvInfo(female != 0)->shape_num;
		else
			sn = skin->naked_shape;
		set_polymorph(sn);
		break;
	}
	}

	// Doing it here to prevent problems with immunities.
	if (flag >= 0 && flag < 32)
		flags |= (static_cast<uint32>(1) << flag);
	else if (flag >= 32 && flag < 64)
		flags2 |= (static_cast<uint32>(1) << (flag - 32));
	// Update stats if open.
	if (gumpman->showing_gumps())
		gwin->set_all_dirty();
	set_actor_shape();
}

void Actor::set_type_flag(
    int flag
) {
	if (flag >= 0 && flag < 16)
		type_flags |= (static_cast<uint32>(1) << flag);

	set_actor_shape();
}

/*
 *  Clear flag.
 */

void Actor::clear_flag(
    int flag
) {
//	cout << "Clear flag for NPC " << get_npc_num() << " = " << flag << endl;
	if (flag >= 0 && flag < 32)
		flags &= ~(static_cast<uint32>(1) << flag);
	else if (flag >= 32 && flag < 64)
		flags2 &= ~(static_cast<uint32>(1) << (flag - 32));
	if (flag == Obj_flags::invisible)   // Restore normal palette.
		gclock->set_palette();
	else if (flag == Obj_flags::asleep) {
		if (schedule_type == Schedule::sleep)
			set_schedule_type(Schedule::stand);
		else if ((get_framenum() & 0xf) == Actor::sleep_frame) {
			// Find spot to stand.
			Tile_coord pos = get_tile();
			pos.tz -= pos.tz % 5; // Want floor level.
			pos = Map_chunk::find_spot(pos, 6, get_shapenum(),
			                           Actor::standing, 0);
			if (pos.tx >= 0)
				move(pos);
			change_frame(Actor::standing);
		}
		Usecode_script::terminate(this);
	} else if (flag == Obj_flags::charmed) {
		reset_effective_alignment();
		Combat_schedule::stop_attacking_npc(this);
		set_target(nullptr);          // Need new opponent.
	} else if (flag == Obj_flags::bg_dont_move || flag == Obj_flags::dont_move)
		// Start again after a little while
		start_std();
	else if (flag == Obj_flags::polymorph && get_flag(Obj_flags::naked))
		clear_flag(Obj_flags::naked);
	else if (flag == Obj_flags::naked && get_flag(Obj_flags::polymorph))
		clear_flag(Obj_flags::polymorph);

	set_actor_shape();
}

void Actor::clear_type_flag(
    int flag
) {
	if (flag >= 0 && flag < 16)
		type_flags &= ~(static_cast<uint32>(1) << flag);

	set_actor_shape();
}

/*
 *  Get flags.
 */

bool Actor::get_type_flag(
    int flag
) const {
	return (flag >= 0 && flag < 16) ? (type_flags & (static_cast<uint32>(1) << flag))
	       != 0 : false;
}
/*
 *  SetFlags
 */

void Actor::set_type_flags(
    unsigned short tflags
) {
	type_flags = tflags;
	set_actor_shape();
}

/*
 *  Set temperature.
 */

void Actor::set_temperature(
    int v               // Should be 0-63.
) {
	if (v < 0)
		v = 0;
	else if (v > 63)
		v = 63;
	temperature = v;
}

/*
 *  Figure warmth based on what's worn.  In trying to mimic the original
 *  SI, the base value is -75.
 */

int Actor::figure_warmth(
) {
	int warmth = -75;       // Base value.

	static Ready_type_Exult locs[] = {head, cloak, feet, torso, gloves, legs};
	for (auto loc : locs) {
		Game_object *worn = spots[static_cast<int>(loc)];
		if (worn)
			warmth += worn->get_info().get_object_warmth(worn->get_framenum());
	}
	return warmth;
}

/*
 *  Get maximum weight in stones that can be held.
 *
 *  Output: Max. allowed, or 0 if no limit (i.e., not carried by an NPC).
 */

int Actor::get_max_weight(
) const {
	return 2 * get_effective_prop(static_cast<int>(Actor::strength));
}

/*
 *  Call usecode function for an object that's readied/unreadied.
 */

void Actor::call_readied_usecode(
    int index,
    Game_object *obj,
    int eventid
) {
	ignore_unused_variable_warning(index);
	// Limit to certain types.
	if (!obj->get_info().has_usecode_events())
		return;

	const Shape_info &info = obj->get_info();
	if (info.get_shape_class() != Shape_info::container)
		ucmachine->call_usecode(obj->get_usecode(),
		                        obj, static_cast<Usecode_machine::Usecode_events>(eventid));
}

/*
 *  Returns true if NPC is in a non-no_halt usecode script or if
 *  dont_move flag is set.
 */
bool Actor::in_usecode_control() const {
	if (get_flag(Obj_flags::dont_render) || get_flag(Obj_flags::dont_move))
		return true;
	Usecode_script *scr = nullptr;
	while ((scr = Usecode_script::find_active(this, scr)) != nullptr)
		// no_halt scripts seem not to prevent movement.
		if (!scr->is_no_halt())
			return true;
	return false;
}

/*
 *  Attack preset target/tile using preset weapon shape.
 *
 *  Output: True if attack was realized and hit target (or is
 *  a missile flying towards target), false otherwise
 */
bool Actor::usecode_attack() {
    Game_object_shared tobj = target_object.lock();
	return Combat_schedule::attack_target(
	           this, tobj.get(), target_tile, attack_weapon);
}

/*
 *  Should be called after actors and usecode are initialized.
 */

void Actor::init_readied(
) {
	for (size_t i = 0; i < array_size(spots); i++)
		if (spots[i])
			call_readied_usecode(i, spots[i],
			                     Usecode_machine::readied);
}

/*
 *  Remove an object.
 */

void Actor::remove(
    Game_object *obj
) {
	int index = Actor::find_readied(obj);   // Remove from spot.
	// Note:  gwin->drop() also does this,
	//   but it needs to be done before
	//   removal too.
	// Definitely DO NOT call if dead!
	if (!is_dead()
		&& !ucmachine->in_usecode_for(obj, Usecode_machine::unreadied)
		&& !(GAME_SI && ucmachine->in_usecode_for(gwin->get_main_actor(), Usecode_machine::died))) // Fix for #1887 - Hang when leaving SI dream world
		call_readied_usecode(index, obj, Usecode_machine::unreadied);
	Container_game_object::remove(obj);
	if (index >= 0) {
		spots[index] = nullptr;
		if (index == rhand || index == lhand)
			two_handed = false;
		if (index == rfinger || index == lfinger)
			two_fingered = false;
		if (index == belt || index == back_2h || index == back_shield)
			use_scabbard = false;
		if (index == amulet || index == cloak)
			use_neck = false;
		if (index == lhand && schedule)
			schedule->set_weapon(true);
		// Recheck armor immunities and frame powers.
		refigure_gear();
	}
}

/*
 *  Add an object.
 *
 *  Output: 1, meaning object is completely contained in this,
 *      0 if not enough space.
 */

bool Actor::add(
    Game_object *obj,
    bool dont_check,        // 1 to skip volume check (AND also
    //   to skip usecode call).
    bool combine,           // True to try to combine obj.  MAY
    //   cause obj to be deleted.
    bool noset      // True to prevent actors from setting sched. weapon.
) {

	int index = find_best_spot(obj);// Where should it go?

	if (index < 0) {        // No free spot?  Look for a bag.
		if (spots[backpack] && spots[backpack]->add(obj, false, combine))
			return true;
		if (spots[belt] && spots[belt]->add(obj, false, combine))
			return true;
		if (spots[lhand] && spots[lhand]->add(obj, false, combine))
			return true;
		if (spots[rhand] && spots[rhand]->add(obj, false, combine))
			return true;
		if (!dont_check)
			return false;

		// try again without checking volume/weight
		if (spots[backpack] && spots[backpack]->add(obj, true, combine))
			return true;
		if (spots[belt] && spots[belt]->add(obj, true, combine))
			return true;
		if (spots[lhand] && spots[lhand]->add(obj, true, combine))
			return true;
		if (spots[rhand] && spots[rhand]->add(obj, true, combine))
			return true;

		if (party_id != -1 || npc_num == 0) {
			CERR("Warning: adding object (" << obj << ", sh. " << obj->get_shapenum() << ", " << obj->get_name() << ") to actor container (npc " << npc_num << ")");
		}
		return Container_game_object::add(obj, dont_check, combine);
	}
	// Add to ourself (DON'T combine).
	if (!Container_game_object::add(obj, true))
		return false;

	if (index == both_hands) {      // Two-handed?
		two_handed = true;
		index = lhand;
	} else if (index == lrgloves) { // BG Gloves?
		two_fingered = true;
		index = lfinger;
	} else if (index == scabbard) { // Use scabbard?
		use_scabbard = true;
		index = belt;
	} else if (index == neck) { // Use neck?
		use_neck = true;
		index = amulet;
	}

	spots[index] = obj;     // Store in correct spot.
	if (index == lhand && schedule && !noset)
		schedule->set_weapon(); // Tell combat-schedule about it.
	obj->set_shape_pos(0, 0);   // Clear coords. (set by gump).
	if (!dont_check)
		call_readied_usecode(index, obj, Usecode_machine::readied);
	// (Readied usecode now in drop().)

	const Shape_info &info = obj->get_info();

	if (info.is_light_source() &&
	        (index == lhand || index == rhand))
		add_light_source(info.get_object_light(obj->get_framenum()));

	// Refigure granted immunities.
	gear_immunities |= info.get_armor_immunity();
	gear_powers |= info.get_object_flags(obj->get_framenum(),
	                                     info.has_quality() ? obj->get_quality() : -1);
	return true;
}

/*
 *  Add to given spot.
 *
 *  Output: true if successful, else false.
 */

bool Actor::add_readied(
    Game_object *obj,
    int index,          // Spot #.
    bool dont_check,
    bool force_pos,
    bool noset
) {
	// Is Out of range?
	if (index < 0 || index >= static_cast<int>(array_size(spots)))
		return false;

	// Already something there? Try to drop into it.
	// +++++Danger:  drop() can potentially delete the object.
//	if (spots[index]) return spots[index]->drop(obj);
	if (spots[index]) return spots[index]->add(obj, dont_check);

	int prefered;
	int alt1;
	int alt2;

	// Get the preferences
	get_prefered_slots(obj, prefered, alt1, alt2);

	// Check Prefered
	if (!fits_in_spot(obj, index) && !force_pos) return false;

	// No room, or too heavy.
	if (!Container_game_object::add(obj, true)) return false;

	// Set the spot to this object
	spots[index] = obj;

	// Clear coords. (set by gump).
	obj->set_shape_pos(0, 0);

	// Must be a two-handed weapon.
	if (prefered == both_hands && index == lhand)
		two_handed = true;
	// Must be gloves
	else if (prefered == lrgloves && index == lfinger)
		two_fingered = true;
	// Must be in scabbard
	else if ((alt1 == scabbard || alt2 == scabbard) && index == belt)
		use_scabbard = true;
	// Must use neck entirely
	else if (prefered == neck && index == amulet)
		use_neck = true;

	if (!dont_check)
		call_readied_usecode(index, obj, Usecode_machine::readied);

	const Shape_info &info = obj->get_info();

	if (info.is_light_source() &&
	        (index == lhand || index == rhand))
		add_light_source(info.get_object_light(obj->get_framenum()));

	// Refigure granted immunities.
	gear_immunities |= info.get_armor_immunity();
	gear_powers |= info.get_object_flags(obj->get_framenum(),
	                                     info.has_quality() ? obj->get_quality() : -1);

	if (index == lhand && schedule && !noset)
		schedule->set_weapon(); // Tell combat-schedule about it.
	return true;
}

/*
 *  Find index of spot where an object is readied.
 *
 *  Output: Index, or -1 if not found.
 */

int Actor::find_readied(
    Game_object *obj
) {
	for (size_t i = 0; i < array_size(spots); i++)
		if (spots[i] == obj)
			return i;
	return -1;
}

/*
 *  Get object readied at given slot index.
 *
 *  Output: Object pointer, or null if invalid slot ID given.
 */

Game_object *Actor::get_readied(int index) const {
	return index >= 0 &&
	       index < static_cast<int>(array_size(spots)) ?
	       spots[index] : nullptr;
}

/*
 *  Change shape of a member.
 */

void Actor::change_member_shape(
    Game_object *obj,
    int newshape
) {
	Container_game_object::change_member_shape(obj, newshape);
	refigure_gear();
}

/*
 *  Step aside to a free tile, or try to swap places.
 *
 *  Output: true if successful, else false.
 */

bool Actor::move_aside(
    Actor *for_actor,       // Moving aside for this one.
    int dir             // Direction to avoid (0-7).
) {
	// ++++ FIXME: Ugly workaround: preventing stepping aside in combat
	// also prevents some cases of double-moving aside that result in
	// walking through walls or doors.
	// Also, don't move if the other actor is moving, as this may break
	// pathfinding.
	if (get_schedule_type() == Schedule::combat || get_frame_time())
		return false;
	// Do not move aside if sitting, bending over, kneeling or sleeping.
	int frnum = get_framenum() & 0xf;
	if (frnum >= sit_frame && frnum <= sleep_frame)
		return false;

	Tile_coord cur = get_tile();
	Tile_coord to(-1, -1, -1);
	int d = 8;
	// Try orthogonal directions first.
	to = cur.get_neighbor((dir + 2) % 8);
	if (!is_blocked(to, nullptr, get_type_flags()))
		d = (dir + 2) % 8;
	else {
		to = cur.get_neighbor((dir + 6) % 8);
		if (!is_blocked(to, nullptr, get_type_flags()))
			d = (dir + 6) % 8;
		else {
			for (int i = 0; i < 4; i++) {   // Try diagonals now.
				to = cur.get_neighbor(2 * i + 1);
				if (!is_blocked(to, nullptr, get_type_flags())) {
					d = 2 * i + 1;
					break;
				}
			}
		}
	}

	int stepdir = d;        // This is the direction.
	if (d == 8 || to.tx < 0)    // Failed?  Try to swap places.
		return swap_positions(for_actor);
	// Step, and face direction.
	step(to, get_dir_framenum(stepdir, static_cast<int>(Actor::standing)));
	Tile_coord newpos = get_tile();
	return newpos.tx == to.tx && newpos.ty == to.ty;
}

/*
 *  Get frame if rotated 1, 2, or 3 quadrants clockwise.
 */

int Actor::get_rotated_frame(
    int quads           // 1=90, 2=180, 3=270.
) const {
	int curframe = get_framenum();
	// Bit 4=rotate180, 5=rotate-90.
	int curdir = (4 + 2 * ((curframe >> 4) & 1) - ((curframe >> 5) & 1)) % 4;
	int newdir = (curdir + quads) % 4;
	// Convert to 8-value dir & get frame.
	return get_dir_framenum(2 * newdir, curframe);
}

/*
 *  Get total value of armor being worn.
 */

int Actor::get_armor_points(
) const {
	int points = 0;
	static Ready_type_Exult aspots[] = {head, amulet, torso, cloak, belt,
	                                        lhand, rhand, lfinger, rfinger, legs, feet, earrings,
	                                        gloves
	                                        };
	for (auto aspot : aspots) {
		Game_object *armor = spots[static_cast<int>(aspot)];
		if (armor)
			points += armor->get_info().get_armor();
	}
	return points;
}

/*
 *  Get whether or not the actor is immune or vulnerable to a form of damage.
 *
 *  Input is damage_type for a weapon.
 *
 *  Returns 1 if the actor is immune, -1 if vulnerable or 0 otherwise.
 */

int Actor::is_immune(
    int type
) const {
	if (gear_immunities & (1 << type))
		return 1;
	const Monster_info *minf = get_info().get_monster_info();
	if (minf && minf->get_immune() & (1 << type))
		return 1;
	if (minf && minf->get_vulnerable() & (1 << type))
		return -1;
	else
		return 0;
}

bool Actor::is_goblin() const {
	return get_info().is_goblin();
}

bool Actor::can_see_invisible() const {
	const Monster_info *minf = get_info().get_monster_info_safe();
	return (minf->get_flags() & (1 << Monster_info::see_invisible)) != 0;
}

bool Actor::can_speak() const {
	const Monster_info *minf = get_info().get_monster_info();
	// TODO: Check for SI monks that don't speak (vows of silence, deafness).
	return !minf || !minf->cant_yell();
}

bool Actor::is_sentient() const {
	// Try based on average monster intelligence (prevents some random animals
	// from opening doors or assisting in battle).
	const Monster_info *minf = get_info().get_monster_info_safe();
	return minf->get_intelligence() >= 6;
}

/*
 *  Get weapon value.
 */

const Weapon_info *Actor::get_weapon(
    int &points,
    int &shape,
    Game_object  *&obj      // ->weapon itself returned, or nullptr.
) const {
	points = 1;         // Bare hands = 1.
	shape = -1;         // Bare hands.
	const Weapon_info *winf = nullptr;
	Game_object *weapon = spots[static_cast<int>(lhand)];
	obj = weapon;
	if (weapon) {
		if ((winf = weapon->get_info().get_weapon_info()) != nullptr) {
			points = winf->get_damage();
			shape = weapon->get_shapenum();
			return winf;
		}
	}
	return winf;
}

/*
 *  Roll a 25-sided die to determine a win-lose outcome, adding a
 *  bias for the attacker and for the defender.
 */

bool Actor::roll_to_win(
    int attacker,           // Points added.
    int defender            // Points subtracted.
) {
	const int sides = 30;
	int roll = rand() % sides;
	if (roll == 0)          // Always lose.
		return false;
	else if (roll == sides - 1) // High?  Always win.
		return true;
	else
		return roll + attacker - defender >= sides / 2 - 1;
}

/*
 *  Get effective property, or default value.
 */

inline int Get_effective_prop(
    Actor *npc,         // ...or nullptr.
    Actor::Item_properties prop,    // Property #.
    int defval = 0          // Default val if npc==0.
) {
	return npc ? npc->get_effective_prop(prop) : defval;
}

/*
 *  Figure hit points lost from an attack, and subtract from total.
 *
 *  Output: Hits taken or < 0 for explosion.
 */

int Actor::figure_hit_points(
    Game_object *attacker,
    int weapon_shape,       // < 0 for readied weapon.
    int ammo_shape,         // < 0 for no ammo shape.
    bool explosion          // If this is an explosion attacking.
) {
	bool were_party = party_id != -1 || npc_num == 0;
	// godmode effects:
	if (were_party && cheat.in_god_mode())
		return 0;
	Actor *npc = attacker ? attacker->as_actor() : nullptr;
	bool theyre_party = npc &&
	                    (npc->party_id != -1 || npc->npc_num == 0);
	bool instant_death = (cheat.in_god_mode() && theyre_party);
	// Modify using combat difficulty.
	int bias = were_party ? Combat::difficulty :
	           (theyre_party ? -Combat::difficulty : 0);

	const Weapon_info *winf;
	const Ammo_info *ainf;

	int wpoints = 0;
	if (weapon_shape >= 0)
		winf = ShapeID::get_info(weapon_shape).get_weapon_info();
	else
		winf = nullptr;
	if (ammo_shape >= 0)
		ainf = ShapeID::get_info(ammo_shape).get_ammo_info();
	else
		ainf = nullptr;
	if (!winf && weapon_shape < 0)
		winf = npc ? npc->get_weapon(wpoints) : nullptr;

	int usefun = -1;
	int powers = 0;
	int type = Weapon_data::normal_damage;
	bool explodes = false;

	if (winf) {
		wpoints = winf->get_damage();
		usefun = winf->get_usecode();
		type = winf->get_damage_type();
		powers = winf->get_powers();
		explodes = winf->explodes();
	} else
		wpoints = 1;    // Give at least one, but only if there's no weapon
	if (ainf) {
		wpoints += ainf->get_damage();
		// Replace damage type.
		if (ainf->get_damage_type() != Weapon_data::normal_damage)
			type = ainf->get_damage_type();
		powers |= ainf->get_powers();
		explodes = explodes || ainf->explodes();
	}

	if (explodes && !explosion) { // Explosions shouldn't explode again.
		// Time to explode.
		Tile_coord offset(0, 0, get_info().get_3d_height() / 2);
		eman->add_effect(std::make_unique<Explosion_effect>(get_tile() + offset,
		                                      nullptr, 0, weapon_shape, ammo_shape, attacker));
		// The explosion will handle the damage.
		return -1;
	}

	int expval = 0;
	int hits = 0;
	bool nodamage = (powers & (Weapon_data::no_damage)) != 0;
	if (wpoints && instant_death)
		wpoints = 127;
	if (wpoints && !nodamage)
		// This may kill the NPC; this comes before powers because no
		// damage means no powers -- except for the no_damage flag.
		hits = apply_damage(attacker, Get_effective_prop(npc, Actor::strength, 0),
		                    wpoints, type, bias, &expval);
	// Apply weapon powers if needed.
	// wpoints == 0 ==> some spells that don't hurt (but need to apply powers).
	if (powers && (hits || !wpoints || nodamage)) {
		// Protection prevents powers.
		if (!get_flag(Obj_flags::protection)) {
			int attint = Get_effective_prop(npc, Actor::intelligence, 16);
			int defstr = Get_effective_prop(this, Actor::strength);
			int defint = Get_effective_prop(this, Actor::intelligence);

			// These rolls are bourne from statistical analisys and are,
			// as far as I can tell, how the game works.
			if ((powers & Weapon_data::poison) && roll_to_win(attint, defstr))
				set_flag(Obj_flags::poisoned);
			if ((powers & Weapon_data::curse) && roll_to_win(attint, defint))
				set_flag(Obj_flags::cursed);
			if ((powers & Weapon_data::charm) && roll_to_win(attint, defint)) {
				set_flag(Obj_flags::charmed);
				if (npc)
					charmalign = npc->get_effective_alignment();
				else
					charmalign = chaotic;   // Verified.
				set_charmed_combat();
			}
			if ((powers & Weapon_data::sleep) && roll_to_win(attint, defint))
				set_flag(Obj_flags::asleep);
			if ((powers & Weapon_data::paralyze) && roll_to_win(attint, defstr))
				set_flag(Obj_flags::paralyzed);
			if (powers & Weapon_data::magebane) {
				// Magebane weapons (magebane sword, death scythe).
				// Take away all mana.
				set_property(static_cast<int>(Actor::mana), 0);
				int num_spells = 0;
				Game_object_vector vec;
				Game_object_vector spells;
				vec.reserve(50);
				spells.reserve(50);
				get_objects(vec, c_any_shapenum, c_any_qual, c_any_framenum);
				// Gather all spells...
				for (auto *obj : vec)
					if (obj->get_info().is_spell())   // Seems to be right.
						spells.push_back(obj);
				vec.clear();
				// ... and take them all away.
				while (!spells.empty()) {
					++num_spells;
					Game_object *obj = spells.back();
					spells.pop_back();
					obj->remove_this();
				}
				if (num_spells) {
					// Display magebane struck string and set
					// no_spell_casting flag. This is only done
					// to prevent monsters from teleporting or
					// doing other such things.
					set_flag(Obj_flags::no_spell_casting);
					if(can_speak()) {
						eman->remove_text_effect(this);
						say(first_magebane_struck, last_magebane_struck);
					}
					// Tell schedule we need a new weapon.
					if (schedule && spots[lhand] == nullptr)
						schedule->set_weapon();
				}
			}
		}
		if (nodamage && ammo_shape == 568) {
			// This is *only* done for SI sleep arrows, and all other
			// powers have had their effect by now (as can be verified
			// by using the called usecode function).
			if (npc)    // Just to be sure.
				set_oppressor(npc->get_npc_num());
			// Allowing for BG too, as it doesn't have a function 0x7e1.
			ucmachine->call_usecode(SleepArrowsUsecode, this,
			                        Usecode_machine::weapon);
		}
	}

	if (expval > 0 && npc)  // Give experience.
		npc->set_property(static_cast<int>(exp),
		                  npc->get_property(static_cast<int>(exp)) + expval);

	// Weapon usecode comes last of all.
	if (usefun > 0) {
		if (npc)    // Just to be sure.
			set_oppressor(npc->get_npc_num());
		ucmachine->call_usecode(usefun, this,
		                        Usecode_machine::weapon);
	}
	return hits;
}

/*
 *  Trying to hit NPC with an attack.
 *
 *  Output: true if attack hit, false otherwise.
 */

bool Actor::try_to_hit(
    Game_object *attacker,
    int attval
) {
	int defval = get_effective_prop(static_cast<int>(combat)) +
	             (get_flag(Obj_flags::protection) ? 3 : 0);
	if (combat_trace) {
		string name = "<trap>";
		if (attacker)
			name = attacker->get_name();
		int prob = 30 - (15 + defval - attval) + 1;
		if (prob >= 30)
			prob = 29;  // 1 always misses.
		else if (prob <= 1)
			prob = 1;   // 30 always hits.
		prob *= 100;
		cout << name << " is attacking " << get_name()
		     << " with hit probability " << static_cast<float>(prob) / 30 << "%" << endl;
	}

	return Actor::roll_to_win(attval, defval);
}

/*
 *  Being attacked.
 *
 *  Output: 0 if defeated, else object itself.
 */

Game_object *Actor::attacked(
    Game_object *attacker,
    int weapon_shape,       // < 0 for readied weapon.
    int ammo_shape,         // < 0 for no ammo shape.
    bool explosion          // If this is an explosion attacking.
) {
	if (is_dead() ||        // Already dead?
	        // Or party member of dead Avatar?
	        (party_id >= 0 && gwin->get_main_actor()->is_dead()))
		return nullptr;
	Actor *npc = attacker ? attacker->as_actor() : nullptr;
	if (npc)
		set_oppressor(npc->get_npc_num());
	if (npc && npc->get_schedule_type() == Schedule::duel)
		return this;    // Just play-fighting.

	int oldhp = properties[static_cast<int>(health)];
	int delta = figure_hit_points(attacker, weapon_shape, ammo_shape, explosion);

	if (Combat::show_hits && !is_dead() && delta >= 0) {
		eman->remove_text_effect(this);
		char hpmsg[50];
		sprintf(hpmsg, "-%d(%d)", delta, oldhp - delta);
		eman->add_text(hpmsg, this);
	}
	if (combat_trace) {
		string name = "<trap>";
		if (attacker)
			name = attacker->get_name();
		cout << name << " hits " << get_name();
		if (delta > 0) {
			cout << " for " << delta << " hit points; ";
			if (oldhp > 0 && oldhp < delta)
				cout << get_name() << " is defeated." << endl;
			else
				cout << oldhp - delta << " hit points are left." << endl;
		} else if (!delta)
			cout << " to no damage." << endl;
		else
			cout << " causing an explosion." << endl;
	}

	if (attacker && (is_dead() || properties[static_cast<int>(health)] < 0))
		return nullptr;
	return this;
}

/*
 *  There's probably a smarter way to do this, but this routine checks
 *  for the dragon Draco.
 */

static bool Is_draco(
    Actor *dragon
) {
	Game_object_vector vec;     // Gets list.
	// Should have a special scroll.
	int cnt = dragon->get_objects(vec, 797, 241, 4);
	return cnt > 0;
}

/*
 *  We're dead.  We're removed from the world, but not deleted.
 */

void Actor::die(
    Game_object *attacker
) {
	// If the actor is already dead, we shouldn't do anything
	//(fixes a resurrection bug).
	if (is_dead())
		return;
	set_action(nullptr);
	delete schedule;
	schedule = nullptr;
	gwin->get_tqueue()->remove(this);// Remove from time queue.
	Actor::set_flag(Obj_flags::dead);// IMPORTANT:  Set this before moving
	//   objs. so Usecode(eventid=6) isn't called.
	int shnum = get_shapenum();
	// Special case:  Hook, Dracothraxus.
	if (((shnum == 0x1fa || (shnum == 0x1f8 && Is_draco(this))) &&
	        Game::get_game_type() == BLACK_GATE)) {
		// Exec. usecode before dying.
		ucmachine->call_usecode(ucmachine->get_shape_fun(shnum), this,
		                        Usecode_machine::internal_exec);
		if (is_pos_invalid())   // Invalid now?
			return;
	}
	// Get location.
	Tile_coord pos = get_tile();
	//properties[static_cast<int>(health)] = -50;
	const Shape_info &info = get_info();
	const Monster_info *minfo = info.get_monster_info();
	bool frost_serp = GAME_SI && get_shapenum() == 832;
	if ((frost_serp && (get_framenum() & 0xf) == Actor::sit_frame)
	        || (get_framenum() & 0xf) == Actor::sleep_frame) {
		auto *scr = new Usecode_script(this);
		(*scr) << Ucscript::delay_ticks << 4 << Ucscript::remove;
		scr->start();
	} else  // Laying down to die.
		lay_down(true);

	std::shared_ptr<Dead_body> body_keep;
	Dead_body *body;        // See if we need a body.
	if (info.has_body_info() && (!minfo || !minfo->has_no_body())) {
		// Get body shape/frame.
		shnum = info.get_body_shape();      // Default 400.
		int frnum = info.get_body_frame();  // Default 3.
		// Reflect if NPC reflected.
		frnum |= (get_framenum() & 32);
		body_keep = std::make_shared<Dead_body>(shnum, frnum, 0, 0, 0,
		                     npc_num > 0 ? npc_num : -1);
		body = body_keep.get();
		Shape_frame *shp;
		bool have_body_shape = (shp = body->get_shape()) != nullptr && shp->is_empty();
		if (have_body_shape) {
			// Note: only do this if target shape is an actual
			// body shape (frame 0 empty).
			auto *scr = new Usecode_script(body);
			(*scr) << Ucscript::delay_ticks << 4 << Ucscript::frame << frnum;
			scr->start();
		}
		if (npc_num > 0) {
			// Originals would use body->set_quality(2) instead
			// for bodies of dead monsters. What we must do for
			// backwards compatibility...
			body->set_quality(1);   // Flag for dead body of NPC.
			gwin->set_body(npc_num, body);
		}
		// Tmp. monster => tmp. body.
		if (get_flag(Obj_flags::is_temporary))
			body->set_flag(Obj_flags::is_temporary);
		// Remove NPC from map to prevent the body
		// from colliding with it.
		Game_object_shared keep_this;
		Game_object::remove_this(&keep_this);
		const Shape_info &binf = body->get_info();
		int dx = binf.get_3d_xtiles(frnum) - info.get_3d_xtiles(get_framenum());
		int dy = binf.get_3d_ytiles(frnum) - info.get_3d_ytiles(get_framenum());
		Tile_coord bp;
		// First, try matching corners of the NPC with corners of the body.
		bp = Map_chunk::find_spot(pos + Tile_coord(0,  0, 0), 0, shnum, frnum, 0);
		if (bp.tx == -1)
			bp = Map_chunk::find_spot(pos + Tile_coord(dx,  0, 0), 0, shnum, frnum, 0);
		if (bp.tx == -1)
			bp = Map_chunk::find_spot(pos + Tile_coord(0, dy, 0), 0, shnum, frnum, 0);
		if (bp.tx == -1)
			bp = Map_chunk::find_spot(pos + Tile_coord(dx, dy, 0), 0, shnum, frnum, 0);
		// If still no spot, force to NPC pos, even if blocked.
		if (bp.tx == -1)
			bp = pos;
		// Add NPC back.
		Game_object::move(pos);
		body->move(bp);
		if (have_body_shape) {
			body->change_frame(0); // Make body invisible
		}
	} else
		body = nullptr;
	Game_object *item;      // Move/remove all the items.
	Game_object_shared_vector tooheavy;    // Some shouldn't be moved.
	while ((item = objects.get_first()) != nullptr) {
	    Game_object_shared item_keep = shared_from_obj(item);
		remove(item);
		item->set_invalid();
		if (item->get_info().is_spell())
		{
			tooheavy.push_back(item_keep);
			continue;
		}
		if (body) {
		    item->set_shape_pos(255, 255);	// So it gets placed.
			body->add(item, true);// Always succeed at adding.
		} else {          // No body?  Drop on ground.
			item->set_flag_recursively(Obj_flags::okay_to_take);
			Tile_coord pos2 = Map_chunk::find_spot(pos, 5,
			                                       item->get_shapenum(), item->get_framenum(), 1);
			if (pos.tx != -1)
				item->move(pos2);
			else        // No room anywhere.
				tooheavy.push_back(item_keep);
		}
	}
	if (body)           // Okay to take its contents.
		body->set_flag_recursively(Obj_flags::okay_to_take);

	// Put the heavy ones back.
	for (auto &it : tooheavy)
		add(it.get(), true);
	if (body)
		gwin->add_dirty(body);
	add_dirty();            // Want to repaint area.
	delete_contents();      // remove what's left of inventory
	Actor *npc = attacker ? attacker->as_actor() : nullptr;
	if (npc) {
		// Set oppressor and cause nearby NPCs to attack attacker.
		fight_back(attacker);
		set_target(nullptr, false);
		set_schedule_type(Schedule::wander);

		// Is this a bad guy?
		// Party defeated an evil monster?
		if (npc->is_in_party() && !is_in_party() && alignment >= evil)
			Combat_schedule::monster_died();
	}
	// TODO: De-hard-code this.
	if (GAME_BG && is_in_party() && !Audio::get_ptr()->is_voice_playing()
		&& (rand() % 4) == 0) {
		Audio::get_ptr()->start_speech(22);
	}
	// Move party member to 'dead' list.
	partyman->update_party_status(this);
}

/*
 *  Create another monster of the same type as this, and adjacent.
 *
 *  Output: ->monster, or nullptr if failed.
 */

Game_object_shared Actor::clone(
) {
	const Shape_info &info = get_info();
	// Base distance on greater dim.
	int frame = get_framenum();
	int xs = info.get_3d_xtiles(frame);
	int ys = info.get_3d_ytiles(frame);
	// Find spot.
	Tile_coord pos = Map_chunk::find_spot(get_tile(),
	                                      xs > ys ? xs : ys, get_shapenum(), 0, 1);
	if (pos.tx < 0)
		return nullptr;       // Failed.
	// Create, temporary & with equip.
	Game_object_shared monst = Monster_actor::create(
	                           get_shapenum(), pos, get_schedule_type(),
	                           get_effective_alignment(), true, true);
	return monst;
}

/*
 *  Restore HP's on the hour.
 */

void Actor::mend_wounds(
    bool mendmana
) {
	int hp = properties[static_cast<int>(health)];
	bool starving = (get_property(static_cast<int>(food_level)) <= 9
	                 && is_in_party() && !get_info().does_not_eat());
	// It should be okay to leave is_cold_immune out.
	// It blocks raising temperature in the first place.
	bool freezing = (is_in_party() && temperature >= 50 &&
	                 !(gear_powers & Frame_flags::cold_immune));
	if (is_dead() || get_flag(Obj_flags::poisoned) || (starving && hp > 0) ||
	        freezing)
		return;
	int maxhp = properties[static_cast<int>(strength)];
	if (maxhp > 0 && hp < maxhp) {
		// first case doesn't seem to be used in the original - will keep for npcs
		if (maxhp >= 3 && !starving && get_schedule_type() == Schedule::sleep)
			hp += 1 + rand() % (maxhp / 3);
		else
			hp += 1;
		if (hp > maxhp)
			hp = maxhp;
		properties[static_cast<int>(health)] = hp;
	}

	if (!mendmana)
		return;
	// Restore some mana also.
	int maxmana = properties[static_cast<int>(magic)];
	int curmana = properties[static_cast<int>(mana)];
	clear_flag(Obj_flags::no_spell_casting);

	if (maxmana > 0 && curmana < maxmana) {
		if (maxmana >= 3)
			curmana += 1 + rand() % (maxmana / 3);
		else
			curmana += 1;
		properties[static_cast<int>(mana)] = curmana <= maxmana ? curmana
		                                     : maxmana;
	}
}

/*
 *  Restore from body.  It must not be owned by anyone.
 *
 *  Output: ->actor if successful, else nullptr.
 */

Actor *Actor::resurrect(
    Dead_body *body         // Must be this actor's body.
) {
	Tile_coord pos;
	if (body) {
		if (body->get_owner() ||    // Must be on ground.
		        npc_num <= 0 || gwin->get_body(npc_num) != body)
			return nullptr;
		gwin->set_body(npc_num, nullptr); // Clear from gwin's list.
		Game_object *item;      // Get back all the items.
		while ((item = body->get_objects().get_first()) != nullptr) {
		    Game_object_shared keep = item->shared_from_this();
			body->remove(item);
			add(item, true);       // Always succeed at adding.
		}
		gwin->add_dirty(body);      // Need to repaint here.
		pos = body->get_tile();
		body->remove_this();        // Remove and delete body.
	} else
		pos = Tile_coord(-1, -1, 0);
	move(pos);          // Move back to life.
	// Restore health to max.
	properties[static_cast<int>(health)] =
	    properties[static_cast<int>(strength)];
	Actor::clear_flag(Obj_flags::dead);
	Actor::clear_flag(Obj_flags::poisoned);
	Actor::clear_flag(Obj_flags::paralyzed);
	Actor::clear_flag(Obj_flags::asleep);
	Actor::clear_flag(Obj_flags::protection);
	Actor::clear_flag(Obj_flags::cursed);
	Actor::clear_flag(Obj_flags::charmed);
	// Restore to party if possible.
	partyman->update_party_status(this);
	// Give a reasonable schedule.
	set_schedule_type(is_in_party() ? Schedule::follow_avatar
	                  : Schedule::loiter);
	// Stand up.
	if (!body)
		return this;
	auto *scr = new Usecode_script(this);
	(*scr) << (Ucscript::npc_frame + Actor::sleep_frame)
	       << (Ucscript::npc_frame + Actor::kneel_frame)
	       << (Ucscript::npc_frame + Actor::standing);
	scr->start(1);
	return this;
}

/*
 *  Check to see if an actor taking a step is really blocked.
 */

bool Actor::is_really_blocked(
    Tile_coord &t,
    bool force
) {
	if (abs(t.tz - get_tile().tz) > 1)
		return true;
	Game_object *block = find_blocking(t, get_direction(t));
	if (!block)
		return true;        // IE, water.
	if (block == this)
		return false;
	// Try to get blocker to move aside.
	if (block->move_aside(this, get_direction(block)))
		return false;
	// (May have swapped places.)  If okay, try one last time.
	return t != get_tile() && is_blocked(t, nullptr, force ? MOVE_ALL : 0);
}

/*
 *  Handle a time event (for animation).
 */

void Main_actor::handle_event(
    unsigned long curtime,      // Current time of day.
    uintptr udata          // Ignored.
) {
	purge_deleted_actions();
	if (action) {       // Doing anything?
		// Do what we should.
		int speed = action->get_speed();
		int delay = action->handle_event(this);
		if (!delay) {
			// Action finished.
			// This makes for a smoother scrolling and prevents the
			// avatar from skipping a step when walking.
			frame_time = speed;
			if (!frame_time)    // Not a path. Add a delay anyway.
				frame_time = gwin->get_std_delay();
			delay = frame_time;
			set_action(nullptr);
		}

		gwin->get_tqueue()->add(
		    curtime + delay, this, udata);
	} else if (in_usecode_control() || get_flag(Obj_flags::paralyzed)) {
		frame_time = 0;
		// Keep trying if we are in usecode control.
		gwin->get_tqueue()->add(
		    curtime + gwin->get_std_delay(), this, udata);
	} else if (schedule) {
		frame_time = 0;
		schedule->now_what();
	}
}

/*
 *  Get the party to follow.
 */

void Main_actor::get_followers(
) const {
	int cnt = partyman->get_count();
	for (int i = 0; i < cnt; i++) {
		Actor *npc = gwin->get_npc(partyman->get_member(i));
		if (!npc || npc->get_flag(Obj_flags::asleep) ||
		        npc->is_dead())
			continue;
		int sched = npc->get_schedule_type();
		// Skip if in combat or set to 'wait'.
		if (sched != Schedule::combat &&
		        sched != Schedule::wait &&
		        // Loiter added for SI.
		        sched != Schedule::loiter) {
			if (sched != Schedule::follow_avatar)
				npc->set_schedule_type(
				    Schedule::follow_avatar);
			else
				npc->follow(this);
		}
	}
}

/*
 *  Step onto an adjacent tile.
 *
 *  Output: false if blocked.
 */

bool Main_actor::step(
    Tile_coord t,           // Tile to step onto.
    int frame,          // New frame #.
    bool force
) {
	rest_time = 0;          // Reset counter.
	t.fixme();
	// Get chunk.
	int cx = t.tx / c_tiles_per_chunk;
	int cy = t.ty / c_tiles_per_chunk;
	// Get rel. tile coords.
	int tx = t.tx % c_tiles_per_chunk;
	int ty = t.ty % c_tiles_per_chunk;
	Map_chunk *nlist = gmap->get_chunk(cx, cy);
	bool water;
	bool poison;      // Get tile info.
	get_tile_info(this, gwin, nlist, tx, ty, water, poison);
	if (is_blocked(t, nullptr, force ? MOVE_ALL : 0)) {
		if (is_really_blocked(t, force)) {
			if (schedule)       // Tell scheduler.
				schedule->set_blocked(t);
			stop();
			return false;
		}
	}
	if (poison && t.tz == 0)
		Actor::set_flag(static_cast<int>(Obj_flags::poisoned));
	// Check for scrolling.
	gwin->scroll_if_needed(this, t);
	add_dirty();            // Set to update old location.
	// Get old chunk, old tile.
	Map_chunk *olist = get_chunk();
	Tile_coord oldtile = get_tile();
	// Move it.
	Actor::movef(olist, nlist, tx, ty, frame, t.tz);
	add_dirty(true);           // Set to update new.
	// In a new chunk?
	if (olist != nlist)
		Main_actor::switched_chunks(olist, nlist);
	int roof_height = nlist->is_roof(tx, ty, t.tz);
	gwin->set_ice_dungeon(nlist->is_ice_dungeon(tx, ty));
	if (gwin->set_above_main_actor(roof_height)) {
		gwin->set_in_dungeon(nlist->has_dungeon() ?
		                     nlist->is_dungeon(tx, ty) : 0);
		gwin->set_all_dirty();
	} else if (roof_height < 31 && gwin->set_in_dungeon(nlist->has_dungeon() ?
	           nlist->is_dungeon(tx, ty) : 0))
		gwin->set_all_dirty();
	// Near an egg?  (Do this last, since
	//   it may teleport.)
	nlist->activate_eggs(this, t.tx, t.ty, t.tz,
	                     oldtile.tx, oldtile.ty);
	quake_on_walk();
	return true;
}

/*
 *  Setup cache after a change in chunks.
 */

void Main_actor::switched_chunks(
    Map_chunk *olist,   // Old chunk, or null.
    Map_chunk *nlist    // New chunk.
) {
	int newcx = nlist->get_cx();
	int newcy = nlist->get_cy();
	int xfrom;
	int xto;
	int yfrom;
	int yto; // Get range of chunks.
	if (!olist ||           // No old, or new map?  Use all 9.
	        olist->get_map() != nlist->get_map()) {
		xfrom = newcx > 0 ? newcx - 1 : newcx;
		xto = newcx < c_num_chunks - 1 ? newcx + 1 : newcx;
		yfrom = newcy > 0 ? newcy - 1 : newcy;
		yto = newcy < c_num_chunks - 1 ? newcy + 1 : newcy;
	} else {
		int oldcx = olist->get_cx();
		int oldcy = olist->get_cy();
		if (newcx == oldcx + 1) {
			xfrom = newcx;
			xto = newcx < c_num_chunks - 1 ? newcx + 1 : newcx;
		} else if (newcx == oldcx - 1) {
			xfrom = newcx > 0 ? newcx - 1 : newcx;
			xto = newcx;
		} else {
			xfrom = newcx > 0 ? newcx - 1 : newcx;
			xto = newcx < c_num_chunks - 1 ? newcx + 1 : newcx;
		}
		if (newcy == oldcy + 1) {
			yfrom = newcy;
			yto = newcy < c_num_chunks - 1 ? newcy + 1 : newcy;
		} else if (newcy == oldcy - 1) {
			yfrom = newcy > 0 ? newcy - 1 : newcy;
			yto = newcy;
		} else {
			yfrom = newcy > 0 ? newcy - 1 : newcy;
			yto = newcy < c_num_chunks - 1 ? newcy + 1 : newcy;
		}
	}
	for (int y = yfrom; y <= yto; y++)
		for (int x = xfrom; x <= xto; x++)
			nlist->get_map()->get_chunk(FIX_COORD(x), FIX_COORD(y))->setup_cache();

	// If change in Superchunk number, apply Old Style caching emulation
	gwin->emulate_cache(olist, nlist);
}

/*
 *  Move (teleport) to a new spot.
 */

void Main_actor::move(
    int newtx,
    int newty,
    int newlift,
    int newmap
) {
	// Store old chunk list.
	Map_chunk *olist = get_chunk();
	// Move it.
	Actor::move(newtx, newty, newlift, newmap);
	Map_chunk *nlist = get_chunk();
	if (nlist != olist)
		Main_actor::switched_chunks(olist, nlist);
	int tx = get_tx();
	int ty = get_ty();
	gwin->set_ice_dungeon(nlist->is_ice_dungeon(tx, ty));
	if (gwin->set_above_main_actor(nlist->is_roof(tx, ty, newlift)))
		gwin->set_in_dungeon(nlist->has_dungeon() ?
		                     nlist->is_dungeon(tx, ty) : 0);
}

/*
 *  We're dead.
 */

void Main_actor::die(
    Game_object * /* attacker */
) {
	if (gwin->in_combat())
		gwin->toggle_combat();  // Hope this is safe....
	Actor::set_flag(Obj_flags::dead);
	gumpman->close_all_gumps(); // Obviously.
	// Special function for dying:
	Usecode_function_data *info = Shapeinfo_lookup::GetAvUsecode(0);
	ucmachine->call_usecode(info->fun_id, this,
	                        static_cast<Usecode_machine::Usecode_events>(info->event_id));
}

/*
 *  Set the shapenum based on skin color, sex, naked flag and petra and polymorph flag
 */
void Actor::set_actor_shape() {
	if (get_npc_num() != 0 || get_skin_color() < 0 ||
	        (get_flag(Obj_flags::polymorph) && !get_flag(Obj_flags::naked)))
		return;

	int sn;
	int female = get_type_flag(tf_sex) ? 1 : 0;
	Skin_data *skin = Shapeinfo_lookup::GetSkinInfoSafe(this);

	if (!skin ||    // Should never happen, but hey...
	        (!sman->have_si_shapes() &&
	         Shapeinfo_lookup::IsSkinImported(
	             get_flag(Obj_flags::naked) ? skin->naked_shape : skin->shape_num)))
		sn = Shapeinfo_lookup::GetBaseAvInfo(female != 0)->shape_num;
	else
		sn = get_flag(Obj_flags::naked) ? skin->naked_shape : skin->shape_num;

#ifdef DEBUG
	cerr << "Setting Shape to " << sn << endl;
#endif
	set_shape(sn, get_framenum());
	set_file(SF_SHAPES_VGA);
}

// Sets the polymorph to shape
void Actor::set_polymorph(int shape) {
#ifdef DEBUG
	cerr << "Setting polymorph for " << get_npc_num() << endl;
	cerr << "Shape " << shape << endl;
	cerr << "Save shape " << shape_save << endl;
#endif

	// Want to set to Avatar
	if (shape == Shapeinfo_lookup::GetMaleAvShape() ||
	        shape == Shapeinfo_lookup::GetFemaleAvShape()) {
		Actor *avatar = gwin->get_main_actor();
		if (!avatar) return;

		Skin_data *skin = Shapeinfo_lookup::GetSkinInfoSafe(avatar);
		shape = avatar->get_flag(Obj_flags::naked) ? skin->naked_shape : skin->shape_num;
		if (this == avatar)
			shape_save = shape; // Revert to default un-polymorphed shape.
	}
	set_file(SF_SHAPES_VGA);

	if (shape == shape_save) {
		set_shape(shape_save);
		shape_save = -1;
		clear_flag(Obj_flags::polymorph);
		return;
	}
	if (shape_save == -1) shape_save = get_shapenum();
//	set_shape (shape, get_framenum());
	// ++++Taking a guess for SI amulet:
	set_shape(shape, get_dir_framenum(Actor::standing));
	set_flag(Obj_flags::polymorph);
}

// Sets polymorph shape to defaults based on flags and npc num
void Actor::set_polymorph_default() {
	if (!get_flag(Obj_flags::polymorph)
	        || (get_npc_num() != 0 &&
	            (GAME_SI && get_npc_num() != 28)))
		return;

	set_actor_shape();

	shape_save = get_shapenum();

	if (get_npc_num() == 28)        // Handle Petra First
		set_polymorph(Shapeinfo_lookup::GetMaleAvShape());
	else if (get_flag(Obj_flags::petra))    // Avatar as petra
		set_polymorph(658);
	else    // Snake
		set_polymorph(530);
}

/*
 *  Get 'real' shape for Usecode.
 */

int Actor::get_shape_real(
) const {
	if (npc_num != 0)       // Not the avatar?
		return shape_save != -1 ? shape_save : get_shapenum();
	// Taking guess (6/18/01):
	if (get_type_flag(Actor::tf_sex))
		return Shapeinfo_lookup::GetFemaleAvShape();
	else
		return Shapeinfo_lookup::GetMaleAvShape();
}

/**
 *  Causes earthquake on step if the actor flag is set.
 *  @return: True if caused quake on walk, false otherwise.
 */

bool Actor::quake_on_walk(
) {
	if (get_info().quake_on_walk()) {
		qsteps = (qsteps + 1) % 5;
		if (!qsteps)        // Time to roll?
			gwin->get_tqueue()->add(Game::get_ticks() + 10, new Earthquake(2));
		return true;
	}
	return false;
}
/*
 *  Create NPC.
 */

Npc_actor::Npc_actor(
    const std::string &nm,        // Name.  A copy is made.
    int shapenum,
    int num,
    int uc
) : Actor(nm, shapenum, num, uc), nearby(false),
	num_schedules(0),
	schedules(nullptr) {
}

/*
 *  Kill an actor.
 */

Npc_actor::~Npc_actor(
) {
	delete [] schedules;
}

/*
 *  Set schedule list.
 */

void Npc_actor::set_schedules(
    Schedule_change *sc_list,
    int cnt
) {
	delete [] schedules;
	schedules = sc_list;
	num_schedules = cnt;
}

/*
 *  Set schedule type.
 */

void Npc_actor::set_schedule_time_type(int time, int type) {
	Tile_coord tile;
	int i;

	for (i = 0; i < num_schedules; i++) if (schedules[i].get_time() == time) break;

	if (i == num_schedules) { // Didn't find it
		auto *scheds = new Schedule_change[num_schedules + 1];

		for (i = 0; i < num_schedules; i++) {
			tile = schedules[i].get_pos();
			scheds[i].set(tile.tx, tile.ty, tile.tz,
			              schedules[i].get_type(), schedules[i].get_time());
		}

		scheds[num_schedules].set(0, 0, 0,
		                          static_cast<unsigned char>(type),
		                          static_cast<unsigned char>(time));
		set_schedules(scheds, num_schedules + 1);
	} else { // Did find it
		tile = schedules[i].get_pos();
		schedules[i].set(tile.tx, tile.ty, tile.tz,
		                 static_cast<unsigned char>(type),
		                 static_cast<unsigned char>(time));
	}
}

/*
 *  Set schedule location.
 */

void Npc_actor::set_schedule_time_location(int time, int x, int y) {
	int i;

	for (i = 0; i < num_schedules; i++) if (schedules[i].get_time() == time) break;

	if (i == num_schedules) { // Didn't find it
		Tile_coord tile;
		auto *scheds = new Schedule_change[num_schedules + 1];

		for (i = 0; i < num_schedules; i++) {
			tile = schedules[i].get_pos();
			scheds[i].set(tile.tx, tile.ty, tile.tz,
			              schedules[i].get_type(), schedules[i].get_time());
		}

		scheds[num_schedules].set(x, y, 0, 0,
		                          static_cast<unsigned char>(time));
		set_schedules(scheds, num_schedules + 1);
	} else { // Did find it
		schedules[i].set(x, y, 0,
		                 schedules[i].get_type(), static_cast<unsigned char>(time));
	}
}

/*
 *  Remove schedule
 */

void Npc_actor::remove_schedule(int time) {
	int i;

	for (i = 0; i < num_schedules; i++)
		if (schedules[i].get_time() == time) break;
	if (i != num_schedules) { // Found it
		int todel = i;
		Tile_coord tile;
		auto *scheds = new Schedule_change[num_schedules - 1];

		for (i = 0; i < todel; i++) {
			tile = schedules[i].get_pos();
			scheds[i].set(tile.tx, tile.ty, tile.tz,
			              schedules[i].get_type(), schedules[i].get_time());
		}

		for (; i < num_schedules - 1; i++) {
			tile = schedules[i + 1].get_pos();
			scheds[i].set(tile.tx, tile.ty, tile.tz,
			              schedules[i + 1].get_type(),
			              schedules[i + 1].get_time());
		}

		set_schedules(scheds, num_schedules - 1);
	}
}

/*
 *  Set schedule list.
 */

void Npc_actor::get_schedules(
    Schedule_change *&sc_list,
    int &cnt
) const {
	sc_list = schedules;
	cnt = num_schedules;
}
/*
 *  Move and change frame.
 */

void Npc_actor::movef(
    Map_chunk *old_chunk,
    Map_chunk *new_chunk,
    int new_sx, int new_sy,
    int new_frame,
    int new_lift
) {
	Actor::movef(old_chunk, new_chunk,
	             new_sx, new_sy, new_frame, new_lift);
	if (old_chunk != new_chunk) // In new chunk?
		Npc_actor::switched_chunks(old_chunk, new_chunk);
}

/*
 *  Find day's schedule for a given time-of-day.
 *
 *  Output: index of schedule change.
 *      -1 if not found, or if a party member.
 */

int Npc_actor::find_schedule_change(
    int hour3           // 0=midnight, 1=3am, etc.
) {
	if (party_id >= 0 || is_dead())
		return -1;      // Fail if a party member or dead.
	for (int i = 0; i < num_schedules; i++)
		if (schedules[i].get_time() == hour3)
			return i;
	return -1;
}

int Npc_actor::find_schedule_at_time(
    int hour3           // 0=midnight, 1=3am, etc.
) {
	if (party_id >= 0 || is_dead() || num_schedules == 0)
		return -1;      // Fail if a party member or dead.
	int closest_dist = 100;
	int closest_index = 0;
	for (int i = 0; i < num_schedules; i++) {
		int dist = (hour3 - schedules[i].get_time() + 8) % 8;
		if (dist < closest_dist) {
			closest_dist = dist;
			closest_index = i;
		}
	}
	assert(closest_dist != 100);
	return closest_index;
}

/*
 *  Update schedule at a 3-hour time change.
 */

void Npc_actor::update_schedule(
    int hour3,          // 0=midnight, 1=3am, etc.
    int delay,          // Delay in msecs, or -1 for random.
    Tile_coord *pos     // Were we want to return to.
) {
	int i = find_schedule_change(hour3);
	if (i < 0) {
		// Not found?  Look at prev.
		i = find_schedule_at_time(hour3);
		if (i < 0)
			return;
		if ((schedule_type == schedules[i].get_type() ||
		        restored_schedule == schedules[i].get_type()) &&
		        old_schedule_loc == schedules[i].get_pos()) {
			restored_schedule = -1;
			return;     // Already in it.
		}
	}
	restored_schedule = -1;
	old_schedule_loc = schedules[i].get_pos();
	Tile_coord newloc = pos ? *pos : schedules[i].get_pos();
	set_schedule_and_loc(schedules[i].get_type(), newloc, delay);
}

/*
 *  Render.
 */

void Npc_actor::paint(
) {
	Actor::paint();         // Draw on screen.
	if (dormant && schedule &&  // Resume schedule.
	        // FOR NOW:  Not when in formation.
	        (party_id < 0 || !gwin->walk_in_formation ||
	         schedule_type != Schedule::follow_avatar)) {
		dormant = false;    // But clear out old entries first.??
		gwin->get_tqueue()->remove(this);
		// Force schedule->now_what() in .5secs
		// DO NOT call now_what here!!!
		uint32 curtime = Game::get_ticks();
		gwin->get_tqueue()->add(curtime + 500, this, gwin);
	}
	if (!nearby)            // Make sure we're in 'nearby' list.
		gwin->add_nearby_npc(this);
}

/*
 *  Run usecode when double-clicked.
 */
void Npc_actor::activate(
    int event
) {
	if (is_dead() && !cheat.in_map_editor())
		return;
	// Converse, etc.
	Actor::activate(event);
}

/*
 *  Handle a time event (for animation).
 */

void Npc_actor::handle_event(
    unsigned long curtime,      // Current time of day.
    uintptr udata          // Ignored.
) {
	purge_deleted_actions();
	if ((cheat.in_map_editor() && party_id < 0) ||
	        (get_flag(Obj_flags::paralyzed) || is_dead() || is_knocked_out() ||
	         (get_flag(Obj_flags::asleep) && schedule_type != Schedule::sleep))) {
		gwin->get_tqueue()->add(
		    curtime + gwin->get_std_delay(), this, udata);
		return;
	}
	// Prevent actor from doing anything if not in the active map.
	// ... but not if the NPC is not on the map (breaks pathfinding
	// from offscreen if NPC not on map).
	if (get_map() && get_map() != gwin->get_map()) {
		set_action(nullptr);
		dormant = true;
		if (schedule)
			schedule->im_dormant();
		return;
	}

	// Goblins in goblin village should be overly aggressive.
	if (is_goblin() && in_goblin_village(this) && party_id < 0 && can_act() &&
	        schedule &&
	        (schedule_type != Schedule::combat &&   // Not if already in combat.
	         // Patrol schedule already does this.
	         schedule_type != Schedule::patrol &&
	         schedule_type != Schedule::sleep &&
	         schedule_type != Schedule::wait &&
	         schedule_type != Schedule::arrest_avatar))
		schedule->seek_foes();

	if (!action) {          // Not doing anything?
		frame_time = 0;
		if (in_usecode_control() || !can_act())
			// Can't move on our own. Keep trying.
			gwin->get_tqueue()->add(
			    curtime + gwin->get_std_delay(), this, udata);
		else if (schedule) {
			if (!dormant)
				schedule->now_what();
			else
				schedule->im_dormant();
		}
	} else {
		// Do what we should.
		int delay = party_id < 0 ? gwin->is_time_stopped() : 0;
		if (delay <= 0) {   // Time not stopped?
			int speed = action->get_speed();
			delay = action->handle_event(this);
			if (!delay) {
				// Action finished. Add a slight delay.
				frame_time = speed;
				if (!frame_time)    // Not a path. Add a delay anyway.
					frame_time = gwin->get_std_delay();
				delay = frame_time;
				set_action(nullptr);
			}
		}
		gwin->get_tqueue()->add(
		    curtime + delay, this, udata);
	}
}

/*
 *  Step onto an adjacent tile.
 *
 *  Output: false if blocked (or paralyzed).
 *      Dormant is set if off screen.
 */

bool Npc_actor::step(
    Tile_coord t,           // Tile to step onto.
    int frame,          // New frame #.
    bool force
) {
	if (get_flag(Obj_flags::paralyzed) || get_map() != gmap)
		return false;
	Tile_coord oldtile = get_tile();
	// Get old chunk.
	t.fixme();
	// Get chunk.
	int cx = t.tx / c_tiles_per_chunk;
	int cy = t.ty / c_tiles_per_chunk;
	// Get rel. tile coords.
	int tx = t.tx % c_tiles_per_chunk;
	int ty = t.ty % c_tiles_per_chunk;
	// Get ->new chunk.
	Map_chunk *nlist = gmap->get_chunk_safely(cx, cy);
	if (!nlist) {       // Shouldn't happen!
		stop();
		return false;
	}
	bool water;
	bool poison;      // Get tile info.
	get_tile_info(this, gwin, nlist, tx, ty, water, poison);
	if (is_blocked(t, nullptr, force ? MOVE_ALL : 0)) {
		if (is_really_blocked(t, force)) {
			if (schedule)       // Tell scheduler.
				schedule->set_blocked(t);
			stop();
			// Offscreen, but not in party?
			if (!gwin->add_dirty(this) && party_id < 0 &&
			        // And > a screenful away?
			        distance(gwin->get_camera_actor()) > 1 + c_screen_tile_size)
				dormant = true; // Go dormant.
			return false;       // Done.
		}
	}
	if (poison && t.tz == 0)
		Actor::set_flag(static_cast<int>(Obj_flags::poisoned));
	// Check for scrolling.
	gwin->scroll_if_needed(this, t);
	add_dirty();            // Set to repaint old area.
	// Move it.
	Map_chunk *olist = get_chunk();
	movef(olist, nlist, tx, ty, frame, t.tz);

	// Near an egg?  (Do this last, since
	//   it may teleport.)
	nlist->activate_eggs(this, t.tx, t.ty, t.tz, oldtile.tx, oldtile.ty);

	// Offscreen, but not in party?
	if (!add_dirty(true) && party_id < 0 &&
	        // And > a screenful away?
	        distance(gwin->get_camera_actor()) > 1 + c_screen_tile_size &&
	        //++++++++Try getting rid of the 'talk' line:
	        get_schedule_type() != Schedule::talk &&
	        get_schedule_type() != Schedule::street_maintenance) {
		// No longer on screen.
		stop();
		dormant = true;
		return false;
	}
	quake_on_walk();
	return true;           // Add back to queue for next time.
}

/*
 *  Remove an object from its container, or from the world.
 *  The object is deleted.
 */

void Npc_actor::remove_this(
    Game_object_shared *keep     // Non-null to not delete.
) {
	set_action(nullptr);
//	delete schedule; // Problems in SI monster creation.
//	schedule = nullptr;
// Messes up resurrection   num_schedules = 0;
	gwin->get_tqueue()->remove(this);// Remove from time queue.
	gwin->remove_nearby_npc(this);  // Remove from nearby list.
	// Store old chunk list.
	Map_chunk *olist = get_chunk();
	Game_object_shared keep_this;
	Actor::remove_this(&keep_this);  // Remove, but don't ever delete an NPC
	Npc_actor::switched_chunks(olist, nullptr);
	set_invalid();
	if (!keep && npc_num > 0)  // Really going?
		unused = true;      // Mark unused if a numbered NPC.
	if (keep)
		*keep = std::move(keep_this);
}

/*
 *  Update chunks' npc lists after this has moved.
 */

void Npc_actor::switched_chunks(
    Map_chunk *olist,   // Old chunk, or null.
    Map_chunk *nlist    // New chunk, or null.
) {
	ignore_unused_variable_warning(olist, nlist);
	//++++++++++No longer needed.  Maybe it should go away.
}

/*
 *  Move (teleport) to a new spot.
 */

void Npc_actor::move(
    int newtx,
    int newty,
    int newlift,
    int newmap
) {
	// Store old chunk list.
	Map_chunk *olist = get_chunk();
	// Move it.
	Actor::move(newtx, newty, newlift, newmap);
	Map_chunk *nlist = get_chunk();
	if (nlist != olist) {
		Npc_actor::switched_chunks(olist, nlist);
		if (!olist)     // Moving back into world?
			dormant = true; // Cause activation if painted.
	}
}

/*
 *  Get # of NPC a body came from (or -1 if not known).
 */

int Dead_body::get_live_npc_num(
) const {
	return npc_num;
}

/*
 *  Get size of IREG. Returns -1 if can't write to buffer.
 */

int Dead_body::get_ireg_size() {
	int size = Container_game_object::get_ireg_size();
	return size < 0 ? size : size + 1;
}

/*
 *  Write out body and its members.
 */

void Dead_body::write_ireg(
    ODataSource *out
) {
	unsigned char buf[21];      // 13-byte entry - Exult extension.
	uint8 *ptr = write_common_ireg(13, buf);
	Game_object *first = objects.get_first(); // Guessing: +++++
	unsigned short tword = first ? first->get_prev()->get_shapenum()
	                       : 0;
	Write2(ptr, tword);
	*ptr++ = 0;         // Unknown.
	*ptr++ = get_quality();
	int npc = get_live_npc_num();   // If body, get source.
	// Here, store NPC # more simply.
	Write2(ptr, npc);   // Allowing larger range of NPC bodies.
	*ptr++ = nibble_swap(get_lift()); // Lift
	*ptr++ = static_cast<unsigned char>(get_obj_hp());      // Resistance.
	// Flags:  B0=invis. B3=okay_to_take.
	*ptr++ = (get_flag(Obj_flags::invisible) ? 1 : 0) +
	         (get_flag(Obj_flags::okay_to_take) ? (1 << 3) : 0);
	out->write(reinterpret_cast<char *>(buf), ptr - buf);
	write_contents(out);        // Write what's contained within.
	// Write scheduled usecode.
	Game_map::write_scheduled(out, this);
}


/*
 *  Create a sequence of frames.
 */

Frames_sequence::Frames_sequence(
    int cnt,            // # of frames.
    unsigned char *f        // List of frames.
) : num_frames(cnt) {
	frames = new unsigned char[cnt];
	memcpy(frames, f, cnt);     // Copy in the list.
}