actors.h

/*
 *  actors.h - Game actors.
 *
 *  Copyright (C) 1998-1999  Jeffrey S. Freedman
 *  Copyright (C) 2000-2022  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.
 */

#ifndef INCL_ACTORS
#define INCL_ACTORS 1

#include "contain.h"
#include "flags.h"
#include "ignore_unused_variable_warning.h"
#include "ready.h"
#include "utils.h"    // This is only included for Log2...

#include <array>

class Image_window;
class Game_window;
class Npc_actor;
class Actor_action;
class Schedule;
class Schedule_change;
class Monster_info;
class Monster_actor;
class Weapon_info;
class Dead_body;
class Npc_timer_list;
class Frames_sequence;
class Animator;
class Actor_attributes;

/*
 *  An actor:
 */
class Actor : public Container_game_object, public Time_sensitive {
	static Game_object_shared editing;    // NPC being edited by ExultStudio.
protected:
	std::string name;                // Its name.
	int         usecode;             // # of usecode function.
	bool        usecode_assigned;    // Usecode # explicitly assigned.
	std::string usecode_name;        // Name of usecode fun explicitly assigned.
	bool        unused;              // If npc_num > 0, this NPC is unused
	//   in the game.
	short npc_num;           // # in Game_window::npcs list, or -1.
	short face_num;          // Which shape for conversations.
	short party_id;          // Index in party, or -1.
	int   properties[12];    // Properties set/used in 'usecode'.
	std::unique_ptr<Actor_attributes>
					 atts;             // Generic atts. (for new games/mods).
	unsigned char    temperature;      // Measure of coldness (0-63).
	short            shape_save;       // Our old shape, or -1.
	short            oppressor;        // NPC ID (>= 0) of oppressor, or -1.
	Game_object_weak target;           // Who/what we're attacking.
	short            casting_mode;     // For displaying casting frames.
	int              casting_shape;    // Shape of casting frames.
	// These 2 are set by the Usecode function 'set_to_attack':
	Game_object_weak target_object;
	Tile_coord       target_tile;
	int              attack_weapon;

public:
	enum Attack_mode {    // Setting from gump.+++++Save/restore.
		nearest   = 0,
		weakest   = 1,    // Attack weakest.
		strongest = 2,
		berserk   = 3,    // Always attack, never retreat.
		protect   = 4,    // Protect NPC with halo.
		defend    = 5,
		flank     = 6,    // Attempt to attack from side.
		flee      = 7,
		random    = 8,    // Choose target at random.
		manual    = 9
	};

	enum Casting_mode {
		not_casting  = 0,    // The NPC is not casting.
		init_casting = 1,    // When set, the next usecode script will
		// display casting frames (shape 859).
		show_casting_frames
				= 2    // Used for displaying the casting frames.
					   // Also flags that the when the script finishes, the
					   // casting frames should be disabled.
	};

protected:
	// Party positions
	static const short party_pos[4][10][2];

	Attack_mode attack_mode;
	// A frame sequence for each dir.:
	static Frames_sequence* avatar_frames[4];
	static Frames_sequence* npc_frames[4];
	Frames_sequence**       frames;
	// Draw weapon in hand
	void          paint_weapon();
	unsigned char schedule_type;       // Schedule type (Schedule_type).
	Tile_coord    schedule_loc;        // Location (x,y) of Shedule
	Tile_coord    old_schedule_loc;    // Location (x,y) of old Shedule
	unsigned char next_schedule;       // Used so correct schedule type
	//   will be saved
	std::unique_ptr<Schedule> schedule;    // Current schedule.
	int   restored_schedule;               // Just restored schedule type.
	bool  dormant;                         // I.e., off-screen.
	bool  hit;                             // Just hit in combat.
	bool  combat_protected;                // 'Halo' on paperdoll screen.
	bool  user_set_attack;                 // True if player set attack_mode.
	short alignment;                       // 'Feelings' towards Ava. See below.
	short charmalign;                      // Alignment of charmed NPC.
	std::array<Game_object*, 18> spots;    // Where things can go.  See 'Spots'
	//   below for description.
	bool two_handed;           // Carrying a two-handed item.
	bool two_fingered;         // Carrying gauntlets (both fingers)
	bool use_scabbard;         // Carrying an item in scabbard (belt, back 2h,
							   // shield).
	bool          use_neck;    // Carrying cloak (amulet, cloak)
	int           light_sources;    // # of light sources readied.
	unsigned char usecode_dir;      // Direction (0-7) for usecode anim.

	unsigned type_flags : 32;    // 32 flags used in movement among other things
	unsigned char  gear_immunities;    // Damage immunities granted by gear.
	unsigned short gear_powers;        // Other powers granted by gear.

	unsigned char ident;

	int                        skin_color;
	Actor_action*              action;            // Controls current animation.
	std::vector<Actor_action*> deletedactions;    // Halted actions.
	int frame_time;    // Time between frames in msecs.  0 if
	//   actor not moving.
	int step_index;    // Index into walking frames, 1 1st.
	int qsteps;        // # steps since last quake.

	std::unique_ptr<Npc_timer_list>
			 timers;         // Timers for poison, hunger, etc.
	TileRect weapon_rect;    // Screen area weapon was drawn in.
	long     rest_time;      // # msecs. of not doing anything.
	void     init();         // Clear stuff during construction.
	// Move and change frame.
	void movef(
			Map_chunk* old_chunk, Map_chunk* new_chunk, int new_sx, int new_sy,
			int new_frame, int new_lift);
	bool is_really_blocked(Tile_coord& t, bool force);
	// Empty one hand
	bool empty_hand(Game_object* obj, Game_object_shared* keep);

public:
	friend class Clear_casting;
	friend class Clear_hit;
	static void init_default_frames();    // Set usual frame sequence.
	Actor(const std::string& nm, int shapenum, int num = -1, int uc = -1);
	~Actor() override;
	// Blocked moving onto tile 't'?
	bool is_blocked(
			Tile_coord& t, Tile_coord* f = nullptr, const int move_flags = 0);
	Game_object* find_blocking(const Tile_coord& tile, int dir);

	void swap_ammo(Game_object* newammo);
	bool ready_ammo();           // Find and ready appropriate ammo.
	bool ready_best_weapon();    // Find best weapon and ready it.
	bool ready_best_shield();    // Find best shield and ready it.
	void empty_hands();          // Make sure both hands are empty.
	// Force repaint of area taken.
	int get_effective_weapon_shape() const;    // For displaying casting frames.
	bool add_dirty(bool figure_rect = false);
	void change_frame(int frnum) override;    // Change frame & set to repaint.
	bool figure_weapon_pos(int& weapon_x, int& weapon_y, int& weapon_frame);
	void say_hunger_message();
	void use_food();    // Decrement food level.
	// Increment/decrement temperature.
	void check_temperature(bool freeze);

	// Get frame seq. for given dir.
	Frames_sequence* get_frames(int dir) const {
		return frames[dir / 2];
	}

	int& get_step_index() {    // Get it (for updating).
		return step_index;
	}

	// Get attack frames.
	int get_attack_frames(
			int weapon, bool projectile, int dir, signed char* frames) const;

	enum Alignment {    // Describes alignment field.
		neutral = 0,    // See [I]nspect NPC screen in SI for names.
		good    = 1,
		evil    = 2,
		chaotic = 3
	};    // Bees have this, & don't attack until

	// Spots where items are carried.
	int free_hand() const {    // Get index of a free hand, or -1.
		// PREFER right hand.
		return two_handed
					   ? -1
					   : (!spots[rhand] ? rhand : (!spots[lhand] ? lhand : -1));
	}

	int free_finger() const {    // Get index of a free finger, or -1.
		return two_fingered
					   ? -1
					   : (!spots[lfinger] ? lfinger
										  : (!spots[rfinger] ? rfinger : -1));
	}

	inline bool is_two_handed() const {
		return two_handed;
	}

	inline bool is_two_fingered() const {
		return two_fingered;
	}

	inline bool is_scabbard_used() const {
		return use_scabbard;
	}

	inline bool is_neck_used() const {
		return use_neck;
	}

	int get_light_source() const {    // Carrying a torch?
		return light_sources;
	}

	void add_light_source(int brightness) {    // Add a torch
		light_sources += brightness;
	}

	void add_light_source(Game_object* obj);

	void remove_light_source(int brightness) {    // Remove a torch
		if (light_sources >= brightness) {
			light_sources -= brightness;
		} else {
			light_sources = 0;
		}
	}

	void remove_light_source(Game_object* obj);

	Attack_mode get_attack_mode() const {
		return attack_mode;
	}

	void set_attack_mode(Attack_mode amode, bool byuser = false) {
		attack_mode     = amode;
		user_set_attack = byuser;
	}

	bool did_user_set_attack() const {
		return user_set_attack;
	}

	bool is_combat_protected() const {
		return combat_protected;
	}

	void set_combat_protected(bool v) {
		combat_protected = v;
	}

	int get_oppressor() const {
		return oppressor;
	}

	void set_oppressor(int opp) {
		oppressor = opp;
	}

	enum type_flags {
		tf_fly          = 4,
		tf_walk         = 5,
		tf_swim         = 6,
		tf_ethereal     = 7,
		tf_want_primary = 8,
		tf_sex          = 9,
		tf_bleeding     = 10,
		tf_in_party     = 12,
		tf_in_action    = 13,
		tf_conjured     = 14,
		tf_summonned    = 15
	};

	enum Item_properties {     // Trying to figure out properties.
		strength       = 0,    // This is also max. health.
		dexterity      = 1,
		intelligence   = 2,
		health         = 3,
		combat         = 4,
		mana           = 5,
		magic          = 6,    // Max. mana.
		training       = 7,    // Training points.
		exp            = 8,    // Experience.
		food_level     = 9,
		sex_flag       = 10,    // Seems to be get/set sex type flag in SI.
		missile_weapon = 11     // Pretty sure it returns 1 if wearing
								// weapon with uses >= 2, 0 otherwise.
	};

	enum Frames {    // Frames 0-15.  16-31 are the same,
		//   only S instead of N.
		standing         = 0,
		step_right_frame = 1,
		step_left_frame  = 2,
		ready_frame      = 3,    // Ready to fight?
		raise1_frame     = 4,    // 1-handed strikes.
		reach1_frame     = 5,
		strike1_frame    = 6,
		raise2_frame     = 7,    // 2-handed strikes.
		reach2_frame     = 8,
		strike2_frame    = 9,
		sit_frame        = 10,
		bow_frame        = 11,
		kneel_frame      = 12,
		sleep_frame      = 13,
		up_frame         = 14,    // Both hands reach up.
		out_frame        = 15     // Both hands reach out.
	};

	int get_face_shapenum() const {    // Get "portrait" shape #.
		return face_num;               // It's the NPC's #.
	}

	int get_usecode() const override {
		return usecode == -1 ? Game_object::get_usecode() : usecode;
	}

	bool set_usecode(int funid, const char* nm = nullptr) override {
		if (funid < 0) {
			usecode_assigned = false;
			usecode_name.clear();
			usecode = -1;
			return true;
		}
		if (nm) {
			usecode_name = nm;
		} else {
			usecode_name.clear();
		}
		usecode          = funid;
		usecode_assigned = true;
		return true;
	}

	Schedule* get_schedule() const {
		return schedule.get();
	}

	int get_frame_time() const {    // Return frame time if moving.
		return frame_time;
	}

	void set_frame_time(int ftime) {    // Set walking speed.
		frame_time = ftime;
	}

	void stand_at_rest();    // Stand (if not doing anyting else).

	void clear_rest_time() {
		rest_time = 0;
	}

	void resting(int msecs) {    // Increment rest time.
		if ((rest_time += msecs) > 2000) {
			stand_at_rest();    // Stand (under certain conditions).
		}
	}

	bool is_moving() const {
		return frame_time != 0;
	}

	bool is_dormant() const {    // Inactive (i.e., off-screen)?
		return dormant;
	}

	bool is_dead() const {
		return (flags & (1 << Obj_flags::dead)) != 0;
	}

	bool is_in_party() const {    // (Includes Avatar.)
		return (flags & (1 << Obj_flags::in_party)) != 0;
	}

	void set_dormant() {
		dormant = true;
	}

	Actor_action* get_action() const {    // Return action.
		return action;
	}

	// Set new action.
	void       set_action(Actor_action* newact);
	void       purge_deleted_actions();
	Tile_coord get_dest() const;    // Get destination.
	// Walk to a desired spot.
	void walk_to_tile(
			const Tile_coord& dest, int speed = 250, int delay = 0,
			int maxblk = 3);

	void walk_to_tile(
			int tx, int ty, int tz, int speed = 250, int delay = 0,
			int maxblk = 3) {
		walk_to_tile(Tile_coord(tx, ty, tz), speed, delay, maxblk);
	}

	// Get there, avoiding obstacles.
	int walk_path_to_tile(
			const Tile_coord& src, const Tile_coord& dest, int speed = 250,
			int delay = 0, int dist = 0, int maxblk = 3);

	int walk_path_to_tile(
			const Tile_coord& dest, int speed = 250, int delay = 0,
			int dist = 0, int maxblk = 3) {
		return walk_path_to_tile(get_tile(), dest, speed, delay, dist, maxblk);
	}

	// Start animation.
	void start(int speed = 250, int delay = 0);
	void start_std();                    // Start with std. speed, delay.
	void stop();                         // Stop animation.
	void follow(const Actor* leader);    // Follow the leader.
	// Approach another from offscreen.
	int approach_another(const Actor* other, bool wait = false);
	// Get info. about tile to step onto.
	static void get_tile_info(
			Actor* actor, Game_window* gwin, Map_chunk* nlist, int tx, int ty,
			bool& water, bool& poison);
	// Set combat opponent.
	void set_target(Game_object* obj, bool start_combat = false);

	Game_object* get_target() const {    // Get who/what we're attacking.
		return target.lock().get();
	}

	// Works out if an object fits in a spot
	bool fits_in_spot(Game_object* obj, int spot);
	// The prefered slot for an object
	void get_prefered_slots(
			Game_object* obj, int& prefered, int& alt1, int& alt2) const;
	// Find where to put object.
	int  find_best_spot(Game_object* obj);
	int  get_prev_schedule_type() const;    // Get previous schedule.
	void restore_schedule();                // Set schedule after reading in.

	void set_schedule_loc(const Tile_coord& loc) {    // For monsters ONLY.
		schedule_loc = loc;
	}

	// Set new schedule.
	void set_schedule_type(
			int                       new_schedule_type,
			std::unique_ptr<Schedule> newsched = nullptr);
	// Change to new schedule at loc
	virtual void set_schedule_and_loc(
			int new_schedule_type, const Tile_coord& dest, int delay = -1);
	bool teleport_offscreen_to_schedule(const Tile_coord& dest, int dist);

	int get_schedule_type() const {
		return schedule_type;
	}

	// Get/set 'alignment'.
	int get_alignment() const {
		return alignment;
	}

	void set_alignment(short a) {
		alignment = a;
	}

	int  get_effective_alignment() const;          // Include 'charmed' flag.
	void set_effective_alignment(int newalign);    // Include 'charmed' flag.

	void reset_effective_alignment() {
		charmalign = alignment;
	}

	// Update chunks after NPC moved.
	virtual void switched_chunks(Map_chunk*, Map_chunk*) {}

	// Update schedule for new 3-hour time.
	virtual void update_schedule(
			int hour3, int delay = -1, Tile_coord* pos = nullptr) {
		ignore_unused_variable_warning(hour3, delay, pos);
	}

	// Render.
	void paint() override;
	// Run usecode function.
	void activate(int event = 1) override;
	bool edit() override;    // Edit in ExultStudio.
	// Saved from ExultStudio.
	static void update_from_studio(unsigned char* data, int datalen);
	// Drop another onto this.
	bool        drop(Game_object* obj) override;
	std::string get_name() const override;
	std::string get_npc_name() const;

	std::string get_npc_name_string() const {
		return name;
	}

	void set_npc_name(const char* n);
	void set_property(int prop, int val);
	bool try_to_hit(Game_object* attacker, int attval) override;
	// Under attack.
	Game_object* attacked(
			Game_object* attacker, int weapon_shape = 0, int ammo_shape = 0,
			bool explosion = false) override;
	int figure_hit_points(
			Game_object* attacker, int weapon_shape = -1, int ammo_shape = -1,
			bool explosion = false) override;
	int apply_damage(
			Game_object* attacker, int str, int wpoints, int type, int bias = 0,
			int* exp = nullptr) override;
	// Lose HP's and check for death.
	int reduce_health(
			int delta, int damage_type, Game_object* attacker = nullptr,
			int* exp = nullptr) override;
	void fight_back(Game_object* attacker);

	bool get_attack_target(Game_object*& obj, Tile_coord& t) const {
		static const Tile_coord  invalidloc(-1, -1, 0);
		const Game_object_shared tobj = target_object.lock();
		obj                           = tobj.get();
		t                             = target_tile;
		return obj || target_tile != invalidloc;
	}

	void set_attack_target(Game_object* t, int w) {
		target_tile   = Tile_coord(-1, -1, 0);
		target_object = weak_from_obj(t);
		attack_weapon = w;
	}

	void set_attack_target(const Tile_coord& t, int w) {
		target_object = Game_object_weak();
		target_tile   = t;
		target_tile.fixme();
		attack_weapon = w;
	}

	int get_effective_range(
			const Weapon_info* winf = nullptr, int reach = -1) const override;
	Game_object* find_weapon_ammo(
			int weapon, int needed = 1, bool recursive = false) override;
	Game_object* find_best_ammo(int family, int needed = 1);
	bool         usecode_attack();
	int          get_property(int prop) const;
	int          get_effective_prop(int prop) const;

	bool is_dying() const {    // Dead when health below -1/3 str.
		return properties[static_cast<int>(health)]
			   < -(properties[static_cast<int>(strength)] / 3);
	}

	bool is_knocked_out() const {
		return get_property(static_cast<int>(health)) <= 0;
	}

	int get_level() const {    // Get experience level.
		return 1 + Log2(get_property(exp) / 50);
	}

	// Get/set generic attribute.
	void set_attribute(const char* nm, int val);
	int  get_attribute(const char* nm) const;
	using Atts_vector = std::vector<std::pair<const char*, int>>;
	void get_attributes(Atts_vector& attlist) const;
	// Set atts. from savegame.
	void            read_attributes(const unsigned char* buf, int len) override;
	Npc_timer_list* need_timers();
	// Set/clear/get actor flag.
	void force_sleep();

	void clear_sleep() {
		flags &= ~(static_cast<uint32>(1) << Obj_flags::asleep);
	}

	void set_flag(int flag) override;
	void set_type_flag(int flag);
	void clear_flag(int flag) override;
	void clear_type_flag(int flag);
	bool get_type_flag(int flag) const override;
	void set_type_flags(unsigned short tflags);

	int get_skin_color() const {
		return skin_color;
	}

	void set_skin_color(int color) {
		skin_color = color;
		set_actor_shape();
	}

	virtual int get_type_flags() const {
		return type_flags;
	}

	short get_casting_mode() const {
		return casting_mode;
	}

	void end_casting_mode(int delay);

	int get_casting_shape() const {
		return casting_shape;
	}

	void begin_casting(int s) {
		casting_mode  = init_casting;
		casting_shape = s;
	}

	void display_casting_frames() {
		casting_mode = show_casting_frames;
	}

	void hide_casting_frames() {
		casting_mode = not_casting;
	}

	//++++++Is_dead() test messes up training.
	//	unsigned char get_ident() { return is_dead() ? 0 : ident; }
	unsigned char get_ident() const {
		return ident;
	}

	void set_ident(unsigned char id) {
		ident = id;
	}

	int get_temperature() const {    // Get/set measure of coldness.
		return temperature;
	}

	void set_temperature(int v);

	int get_temperature_zone() const {
		// SI-verified.
		if (temperature < 15) {
			return 1;
		} else if (temperature < 25) {
			return 2;
		} else if (temperature < 40) {
			return 3;
		} else if (temperature < 50) {
			return 4;
		} else {
			return 5;
		}
	}

	int figure_warmth();    // Based on what's worn.

	bool is_unused() const {    // Free NPC?
		return unused;
	}

	void set_unused(bool tf) {
		unused = tf;
	}

	int get_npc_num() const {    // Get its ID (1-num_npcs).
		return npc_num;
	}

	// Get/set index within party.
	int get_party_id() const {
		return party_id;
	}

	void set_party_id(int i) {
		party_id = i;
	}

	// Set for Usecode animations.
	void set_usecode_dir(int d) {
		usecode_dir = d & 7;
	}

	int get_usecode_dir() const {
		return usecode_dir;
	}

	Actor* as_actor() override {    // An actor?
		return this;
	}

	virtual bool is_slime() const {
		return false;
	}

	void init_readied();    // Call Usecode to init. readied objs.
	// Remove an object.
	void remove(Game_object* obj) override;
	// Add an object.
	bool add(
			Game_object* obj, bool dont_check = false, bool combine = false,
			bool noset = false) override;
	// Add to NPC 'readied' spot.
	bool add_readied(
			Game_object* obj, int index, bool dont_check = false,
			bool force_pos = false, bool noset = false) override;
	int          find_readied(Game_object* obj) override;
	Game_object* get_readied(int index) const override;
	void         call_readied_usecode(
					int index, Game_object* obj, int eventid) override;
	int get_max_weight() const override;    // Get max. weight allowed.
	// Change member shape.
	void change_member_shape(Game_object* obj, int newshape) override;
	// Move out of the way.
	bool move_aside(Actor* for_actor, int dir) override;
	// Get frame if rotated clockwise.
	int         get_rotated_frame(int quads) const override;
	virtual int get_armor_points() const;    // Get total armor value.
	// Gets whether the actor is immune or vulnerable to a given
	// form of damage:
	int  is_immune(int type) const;
	bool is_goblin() const;
	bool can_see_invisible() const;
	bool can_speak() const;
	bool is_sentient() const;
	void refigure_gear();

	bool check_gear_powers(int flags) const {
		return (gear_powers & flags) != 0;
	}

	// Get total weapon value.
	virtual const Weapon_info* get_weapon(
			int& points, int& shape, Game_object*& obj) const;

	const Weapon_info* get_weapon(int& points) const {
		int          sh;
		Game_object* o;
		return get_weapon(points, sh, o);
	}

	static bool roll_to_win(int attacker, int defender);
	// Hit-point algorithm:
	bool can_act();
	bool can_act_charmed();    // checks for charmed and charmed_more_difficult
	void set_charmed_combat();
	virtual void fall_down();
	virtual void lay_down(bool die);
	void         bleed(int first_frame, int last_frame, Tile_coord loc) const;
	void         bleed() const;
	virtual void die(Game_object* attacker);    // We're dead.
	Actor*       resurrect(Dead_body* body);    // Bring back to life.
	Game_object_shared clone();    // Create another nearby to this.
	void               mend_wounds(bool mendmana);    // Restore HP's and MP's.
	// Read from file.
	void read(IDataSource* nfile, int num, bool has_usecode, bool& fix_unused);

	// Don't write out to IREG file.
	void write_ireg(ODataSource* out) override {
		ignore_unused_variable_warning(out);
	}

	int get_ireg_size() override {
		return 0;
	}

	void write(ODataSource* nfile);    // Write out (to 'npc.dat').
	void write_contents(ODataSource* out) override;    // Write contents
	void set_actor_shape();           // Set shape based on sex, skin color
	void set_polymorph(int shape);    // Set a polymorph shape
	void set_polymorph_default();     // Set the default shape

	// Get the polymorph shape
	int get_polymorph() const {
		return shape_save;
	}

	// Get the non polymorph shape (note, doesn't returned skin coloured shapes)
	// For usecode
	int get_shape_real() const;

	// This does the same, but will return skin coloured shapes
	// For paperdolls/face stats
	int get_sexed_coloured_shape() const {
		return shape_save != -1 ? shape_save : get_shapenum();
	}

	// Set schedule list.
	virtual void set_schedules(Schedule_change* list, int cnt) {
		ignore_unused_variable_warning(list, cnt);
	}

	virtual void set_schedule_time_type(int time, int type) {
		ignore_unused_variable_warning(time, type);
	}

	virtual void set_schedule_time_location(int time, int x, int y) {
		ignore_unused_variable_warning(time, x, y);
	}

	virtual void remove_schedule(int time) {
		ignore_unused_variable_warning(time);
	}

	virtual void get_schedules(Schedule_change*& list, int& cnt) const {
		list = nullptr;
		cnt  = 0;
	}

	virtual int find_schedule_at_time(int hour3) {
		ignore_unused_variable_warning(hour3);
		return -1;
	}

	void show_inventory();
	int  inventory_shapenum();

	bool was_hit() {
		return hit;
	}

	// Should be virtual???
	void cache_out();
	bool in_usecode_control() const;
	bool quake_on_walk();
};

using Actor_shared = std::shared_ptr<Actor>;

/*
 *  Actor frame descriptions:
	0   Standing
	1   Walk
	2   Walk
	3   Beginning to attack
	4-6 Attacking with one hand
	7-9 Attacking with two hands
	9   Also NPC shooting magic
	10  Sitting down
	11  Bending over (beginning to sit down)
	12  Kneeling
	11  Lying down
	14  Casting spell (hands raised)
	15  Casting spell (hands outstretched)

 */

/*
 *  The main actor.
 */
class Main_actor : public Actor {
public:
	Main_actor(const std::string& nm, int shapenum, int num = -1, int uc = -1)
			: Actor(nm, shapenum, num, uc) {
		frames = &avatar_frames[0];
	}

	// For Time_sensitive:
	void handle_event(unsigned long curtime, uintptr udata) override;
	void get_followers() const;    // Get party to follow.
	// Step onto an (adjacent) tile.
	bool step(Tile_coord t, int frame, bool force = false) override;
	// Update chunks after NPC moved.
	void switched_chunks(Map_chunk* olist, Map_chunk* nlist) override;
	// Move to new abs. location.
	void move(int newtx, int newty, int newlift, int newmap = -1) override;
	void die(Game_object* attacker) override;    // We're dead.
};

using Main_actor_shared = std::shared_ptr<Main_actor>;

/*
 *  A non-player-character that one can converse (or fight) with:
 */
class Npc_actor : public Actor {
	bool nearby;    // Queued as a 'nearby' NPC.  This is
					//   to avoid being added twice.
protected:
	unsigned char    num_schedules;    // # entries below.
	Schedule_change* schedules;        // List of schedule changes.
	int              find_schedule_change(int hour3);

public:
	Npc_actor(const std::string& nm, int shapenum, int num = -1, int uc = -1);
	~Npc_actor() override;

	void set_nearby() {    // Set/clear/test 'nearby' flag.
		nearby = true;
	}

	void clear_nearby() {
		nearby = false;
	}

	bool is_nearby() const {
		return nearby;
	}

	// Set schedule list.
	void set_schedules(Schedule_change* list, int cnt) override;
	void set_schedule_time_type(int time, int type) override;
	void set_schedule_time_location(int time, int x, int y) override;
	void remove_schedule(int time) override;
	void get_schedules(Schedule_change*& list, int& cnt) const override;
	// Move and change frame.
	void movef(
			Map_chunk* old_chunk, Map_chunk* new_chunk, int new_sx, int new_sy,
			int new_frame, int new_lift);
	// Update schedule for new 3-hour time.
	void update_schedule(
			int hour3, int delay = -1, Tile_coord* pos = nullptr) override;
	int find_schedule_at_time(int hour3) override;
	// Render.
	void paint() override;
	// Run usecode function.
	void activate(int event = 1) override;
	// For Time_sensitive:
	void handle_event(unsigned long curtime, uintptr udata) override;
	// Step onto an (adjacent) tile.
	bool step(Tile_coord t, int frame, bool force = false) override;
	// Remove/delete this object.
	void remove_this(Game_object_shared* keep = nullptr) override;
	// Update chunks after NPC moved.
	void switched_chunks(Map_chunk* olist, Map_chunk* nlist) override;
	// Move to new abs. location.
	void move(int newtx, int newty, int newlift, int newmap = -1) override;

	Npc_actor* as_npc() override {
		return this;
	}
};

using Npc_actor_shared = std::shared_ptr<Npc_actor>;

/*
 *  An actor's dead body:
 */
class Dead_body : public Container_game_object {
	short npc_num;    // # of NPC it came from, or -1.
public:
	Dead_body(
			int shapenum, int framenum, unsigned int tilex, unsigned int tiley,
			unsigned int lft, int n)
			: Container_game_object(shapenum, framenum, tilex, tiley, lft),
			  npc_num(n) {}

	Dead_body* as_body() override {
		return this;
	}

	int get_live_npc_num() const override;

	// Under attack.
	Game_object* attacked(
			Game_object* attacker, int weapon_shape = 0, int ammo_shape = 0,
			bool explosion = false) override {
		ignore_unused_variable_warning(
				attacker, weapon_shape, ammo_shape, explosion);
		return this;    // Not affected.
	}

	void write_ireg(ODataSource* out) override;
	int  get_ireg_size() override;
};

using Dead_body_shared = std::shared_ptr<Dead_body>;

#endif