walk.h

/* 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/>.
 *
 */

/*
 * This code is based on original Soltys source code
 * Copyright (c) 1994-1995 Janusz B. Wisniewski and L.K. Avalon
 */

#ifndef CGE_WALK_H
#define CGE_WALK_H

#include "common/rect.h"
#include "cge/vga13h.h"
#include "cge/events.h"

namespace CGE {

#define kMapArrSize    (kMapZCnt * kMapXCnt)
#define kMapHig        80
#define kMapGridX      (kScrWidth / kMapXCnt)
#define kMapGridZ      (kMapHig / kMapZCnt)
#define kMaxFindLevel  3

enum Dir { kDirNone = -1, kDirNorth, kDirEast, kDirSouth, kDirWest };

class Cluster {
public:
    CGEEngine *_vm;
    Common::Point _pt;
public:
    uint8 &cell();
    Cluster(CGEEngine *vm, int16 a, int16 b);
    Cluster(CGEEngine *vm);
    bool chkBar() const;
    bool isValid() const;
};

class Walk : public Sprite {
private:
    CGEEngine *_vm;
public:
    Cluster _here;
    int _tracePtr;
    int _level;
    int _findLevel;
    Common::Point _target;
    Common::Array<Cluster *> _trace;

    Dir _dir;
    Walk(CGEEngine *vm, BitmapPtr *shpl);
    ~Walk() override;
    void tick() override;
    void findWay(Cluster c);
    void findWay(Sprite *spr);
    int distance(Sprite *spr);
    void turn(Dir d);
    void park();
    bool lower(Sprite *spr);
    void reach(Sprite *spr, int mode = -1);

    void noWay();
    bool find1Way(Cluster c);
};

} // End of namespace CGE

#endif