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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.
*
* $URL$
* $Id$
*
*/
#ifndef PARALLACTION_WALK_H
#define PARALLACTION_WALK_H
#include "parallaction/defs.h"
namespace Parallaction {
struct Animation;
struct Job;
struct WalkNode {
int16 _x;
int16 _y;
public:
WalkNode();
WalkNode(int16 x, int16 y);
WalkNode(const WalkNode& w);
void getPoint(Common::Point &p) const;
};
typedef ManagedList<WalkNode*> WalkNodeList;
void jobWalk(void*, Job *j);
struct PathBuffer {
// handles a 1-bit depth buffer used for masking non-walkable areas
uint16 w;
uint16 internalWidth;
uint16 h;
uint size;
byte *data;
public:
PathBuffer() : w(0), internalWidth(0), h(0), size(0), data(0) {
}
void create(uint16 width, uint16 height) {
w = width;
internalWidth = w >> 3;
h = height;
size = (internalWidth * h);
data = (byte*)calloc(size, 1);
}
void free() {
if (data)
::free(data);
data = 0;
w = 0;
h = 0;
internalWidth = 0;
size = 0;
}
inline byte getValue(uint16 x, uint16 y);
};
class PathBuilder {
Animation *_anim;
WalkNodeList *_list;
Common::List<WalkNode*> _subPath;
void correctPathPoint(Common::Point &to);
uint32 buildSubPath(const Common::Point& pos, const Common::Point& stop);
uint16 walkFunc1(int16 x, int16 y, WalkNode *Node);
public:
PathBuilder(Animation *anim);
WalkNodeList* buildPath(uint16 x, uint16 y);
};
}
#endif
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