/*
 *  The Mana World Server
 *  Copyright 2004 The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  The Mana World  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 any later version.
 *
 *  The Mana  World 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 The Mana  World; if not, write to the  Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef ACTOR_H
#define ACTOR_H

#include "point.h"
#include "game-server/map.hpp"
#include "game-server/thing.hpp"

/**
 * Flags that are raised as necessary. They trigger messages that are sent to
 * the clients.
 */
enum
{
    UPDATEFLAG_NEW_ON_MAP = 1,
    UPDATEFLAG_NEW_DESTINATION = 2,
    UPDATEFLAG_ATTACK = 4,
    UPDATEFLAG_ACTIONCHANGE = 8,
    UPDATEFLAG_LOOKSCHANGE = 16,
    UPDATEFLAG_DIRCHANGE = 32,
    UPDATEFLAG_HEALTHCHANGE = 64
};

/**
 * Generic client-visible object. Keeps track of position, size and what to
 * update clients about.
 */
class Actor : public Thing
{
    public:
        /**
         * Constructor.
         */
        Actor(ThingType type)
          : Thing(type),
            mActionTime(0),
            mUpdateFlags(0),
            mPublicID(65535),
            mSize(0)
        {}

        /**
         * Sets the coordinates. Also updates the walkmap of the map the actor
         * is on.
         *
         * @param p the coordinates.
         */
        void setPosition(const Point &p);

        /**
         * Gets the coordinates.
         *
         * @return the coordinates.
         */
        const Point &getPosition() const
        { return mPos; }

        /**
         * Gets what changed in the actor.
         */
        int getUpdateFlags() const
        { return mUpdateFlags; }

        /**
         * Sets some changes in the actor.
         */
        void raiseUpdateFlags(int n)
        { mUpdateFlags |= n; }

        /**
         * Clears changes in the actor.
         */
        void clearUpdateFlags()
        { mUpdateFlags = 0; }

        /**
         * Sets actor bounding circle radius.
         */
        void setSize(int s) { mSize = s; }
        int getSize() const { return mSize; }

        /**
         * Get public ID.
         *
         * @return the public ID, 65535 if none yet.
         */
        int getPublicID() const
        { return mPublicID; }

        /**
         * Set public ID. The actor shall not have any public ID yet.
         */
        void setPublicID(int id)
        { mPublicID = id; }

        /**
         * Gets the way the actor blocks pathfinding for other actors.
         */
        virtual unsigned char getWalkMask() const
        { return 0x00; } //can walk through everything

        /**
         * Overridden in order to update the walkmap.
         */
        virtual void setMap(MapComposite *map);

    protected:
        /**
         * Gets the way the actor blocks pathfinding for other actors.
         */
        virtual Map::BlockType getBlockType() const
        { return Map::BLOCKTYPE_NONE; }

        unsigned short mActionTime; /**< Delay until next action. */

    private:
        char mUpdateFlags;          /**< Changes in actor status. */

        /** Actor ID sent to clients (unique with respect to the map). */
        unsigned short mPublicID;

        Point mPos;                 /**< Coordinates. */
        unsigned char mSize;        /**< Radius of bounding circle. */
};

#endif // ACTOR_H