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/* Copyright (C) 1994-2003 Revolution Software Ltd
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#ifndef _ROUTER_H
#define _ROUTER_H
#include "memory.h"
#include "object.h"
namespace Sword2 {
#if !defined(__GNUC__)
#pragma START_PACK_STRUCTS
#endif
struct _walkData {
uint16 frame;
int16 x;
int16 y;
uint8 step;
uint8 dir;
} GCC_PACK;
struct _barData {
int16 x1;
int16 y1;
int16 x2;
int16 y2;
int16 xmin;
int16 ymin;
int16 xmax;
int16 ymax;
int16 dx; // x2 - x1
int16 dy; // y2 - y1
int32 co; // co = (y1 *dx)- (x1*dy) from an equation for a line y*dx = x*dy + co
} GCC_PACK;
struct _nodeData {
int16 x;
int16 y;
int16 level;
int16 prev;
int16 dist;
} GCC_PACK;
#if !defined(__GNUC__)
#pragma END_PACK_STRUCTS
#endif
int32 RouteFinder(Object_mega *ob_mega, Object_walkdata *ob_walkdata, int32 x, int32 y, int32 dir);
void EarlySlowOut(Object_mega *ob_mega, Object_walkdata *ob_walkdata);
void AllocateRouteMem(void);
_walkData* LockRouteMem(void);
void FloatRouteMem(void);
void FreeRouteMem(void);
void FreeAllRouteMem(void);
void PlotWalkGrid(void);
void AddWalkGrid(int32 gridResource);
void RemoveWalkGrid(int32 gridResource);
void ClearWalkGridList(void);
} // End of namespace Sword2
#endif
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