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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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on original Soltys source code
* Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
*/
#ifndef __CGE_WALK__
#define __CGE_WALK__
#include "cge/wav.h"
#include "cge/vga13h.h"
#include "cge/events.h"
namespace CGE {
#define kMapXCnt 40
#define kMapZCnt 20
#define kMapTop 80
#define kMapHig 80
#define kMapGridX (kScrWidth / kMapXCnt)
#define kMapGridZ (kMapHig / kMapZCnt)
#define kMaxFindLevel 3
enum Dir { kDirNone = -1, kDirNorth, kDirEast, kDirSouth, kDirWest };
class Couple {
protected:
signed char _a;
signed char _b;
public:
Couple() { }
Couple(const signed char a, const signed char b) : _a(a), _b(b) { }
Couple operator + (Couple c) {
return Couple(_a + c._a, _b + c._b);
}
void operator += (Couple c) {
_a += c._a;
_b += c._b;
}
Couple operator - (Couple c) {
return Couple(_a - c._a, _b - c._b);
}
void operator -= (Couple c) {
_a -= c._a;
_b -= c._b;
}
bool operator == (const Couple &c) {
return ((_a - c._a) | (_b - c._b)) == 0;
}
bool operator != (Couple c) {
return !(operator == (c));
}
void split(signed char &a, signed char &b) {
a = _a;
b = _b;
}
};
class Cluster : public Couple {
public:
static uint8 _map[kMapZCnt][kMapXCnt];
static CGEEngine *_vm;
static void init(CGEEngine *vm);
public:
uint8 &cell();
Cluster() : Couple() { }
Cluster(int a, int b) : Couple(a, b) { }
bool chkBar() const;
bool isValid() const;
};
class Walk : public Sprite {
private:
CGEEngine *_vm;
public:
Cluster _here;
int _tracePtr;
int _level;
int _findLevel;
Couple _target;
Cluster _trace[kMaxFindLevel];
Dir _dir;
Walk(CGEEngine *vm, BitmapPtr *shpl);
void tick();
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);
};
Cluster XZ(int x, int y);
Cluster XZ(Couple xy);
extern Walk *_hero;
} // End of namespace CGE
#endif
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