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engines/ultima/nuvie/actors/actor_manager.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef NUVIE_ACTORS_ACTOR_MANAGER_H
+#define NUVIE_ACTORS_ACTOR_MANAGER_H
+
+#include "ultima/shared/std/string.h"
+#include "ultima/nuvie/core/obj_manager.h"
+#include "ultima/nuvie/misc/actor_list.h"
+#include "ultima/nuvie/actors/actor.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+class Configuration;
+class Map;
+class TileManager;
+class GameClock;
+class MapCoord;
+
+
+#define ACTORMANAGER_MAX_ACTORS 256
+
+class ActorManager {
+	const Configuration *config;
+	TileManager *tile_manager;
+	ObjManager *obj_manager;
+
+	bool update; // ActorManager is not paused
+	bool wait_for_player; // Player's turn; wait until updateActors() is called
+	bool combat_movement; // Defines actor movement type (individual/party)
+	bool should_clean_temp_actors; // If set, temp actors are cleaned when > 19 tiles from player.
+
+	Map *map;
+	Actor *actors[ACTORMANAGER_MAX_ACTORS];
+	uint8 player_actor;
+	uint8 temp_actor_offset;
+	GameClock *_clock;
+
+	uint16 last_obj_blk_x, last_obj_blk_y;
+	uint8 last_obj_blk_z;
+	uint16 cur_x, cur_y;
+	uint8 cur_z;
+	MapCoord *cmp_actor_loc; // data for sort_distance() & cmp_distance_to_loc()
+
+public:
+
+	ActorManager(const Configuration *cfg, Map *m, TileManager *tm, ObjManager *om, GameClock *c);
+	~ActorManager();
+
+	void init();
+	void clean();
+
+	bool load(NuvieIO *objlist);
+	bool save(NuvieIO *objlist);
+// ActorList
+	ActorList *get_actor_list(); // *returns a NEW list*
+	ActorList *sort_nearest(ActorList *list, uint16 x, uint16 y, uint8 z); // ascending distance
+	ActorList *filter_distance(ActorList *list, uint16 x, uint16 y, uint8 z, uint16 dist);
+	ActorList *filter_alignment(ActorList *list, ActorAlignment align);
+	ActorList *filter_party(ActorList *list);
+
+	Actor *get_actor(uint8 actor_num) const;
+	Actor *get_actor(uint16 x, uint16 y, uint8 z,  bool inc_surrounding_objs = true, Actor *excluded_actor = nullptr);
+	Actor *get_actor_holding_obj(Obj *obj);
+
+	private:
+	Actor *findActorAtImpl(uint16 x, uint16 y, uint8 z, bool(*predicateWrapper)(void *, const Actor *), bool incDoubleTile, bool incSurroundingObjs, void *predicate) const;
+
+	public:
+	/**
+	 * @brief Find first actor at location for which predicate function returns true
+	 * @param x world coordinate
+	 * @param y world coordinate
+	 * @param z level
+	 * @param predicate predicate function/lambda of the form: bool f(const Actor*)
+	 * @param incDoubleTile include all tiles of double width/height actors
+	 * @param incSurroundingObjs include surrounding actor objects
+	 * @return pointer to actor or nullptr
+	 */
+	template<typename F>
+	Actor *findActorAt(uint16 x, uint16 y, uint8 z, F predicate, bool incDoubleTile = true, bool incSurroundingObjs = true) {
+		// This is a template so it can take lambdas.
+		// To keep the implementation out of the header, the type of the passed lambda/function
+		// is hidden inside a wrapping lambda, which is then passed as a function pointer.
+		// TODO: Use a class for this.
+		auto predicateWrapper = +[](void *wrappedPredicate, const Actor *a) -> bool {
+			return (*(F*)wrappedPredicate)(a);
+		};
+		return findActorAtImpl(x, y, z, predicateWrapper, incDoubleTile, incSurroundingObjs, &predicate);
+	}
+
+	Actor *get_avatar();
+
+	Actor *get_player();
+	void set_player(Actor *a);
+
+	const char *look_actor(const Actor *a, bool show_prefix = true);
+
+	void set_update(bool u) {
+		update = u;
+	}
+	bool get_update() const {
+		return update;
+	}
+	void set_combat_movement(bool c);
+
+	void updateActors(uint16 x, uint16 y, uint8 z);
+	void twitchActors();
+	void moveActors();
+	void startActors();
+	void updateSchedules(bool teleport = false);
+
+	void clear_actor(Actor *actor);
+	bool resurrect_actor(Obj *actor_obj, MapCoord new_position);
+
+	bool is_temp_actor(Actor *actor);
+	bool is_temp_actor(uint8 id_n);
+	bool create_temp_actor(uint16 obj_n, uint8 obj_status, uint16 x, uint16 y, uint8 z, ActorAlignment alignment, uint8 worktype, Actor **new_actor = nullptr);
+	bool clone_actor(Actor *actor, Actor **new_actor, MapCoord new_location);
+	bool toss_actor(Actor *actor, uint16 xrange, uint16 yrange);
+	bool toss_actor_get_location(uint16 start_x, uint16 start_y, uint8 start_z, uint16 xrange, uint16 yrange, MapCoord *location);
+	void print_actor(Actor *actor);
+	bool can_put_actor(const MapCoord &location);
+	void enable_temp_actor_cleaning(bool value) {
+		should_clean_temp_actors = value;
+	}
+
+protected:
+
+	Actor *get_multi_tile_actor(uint16 x, uint16 y, uint8 z);
+
+	bool loadActorSchedules();
+	inline Actor *find_free_temp_actor();
+	inline ActorList *filter_active_actors(ActorList *list, uint16 x, uint16 y, uint8 z);
+
+	void update_temp_actors(uint16 x, uint16 y, uint8 z);
+	void clean_temp_actors_from_level(uint8 level);
+	void clean_temp_actors_from_area(uint16 x, uint16 y);
+
+	inline void clean_temp_actor(Actor *actor);
+
+private:
+
+	bool loadCustomTiles(nuvie_game_t game_type);
+	void loadNPCTiles(const Common::Path &datadir);
+	void loadAvatarTiles(const Common::Path &datadir);
+	void loadCustomBaseTiles();
+	Std::vector<Std::string> getCustomTileFilenames(const Common::Path &datadir, const Std::string &filenamePrefix);
+};
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif