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/*
* The Mana Server
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server 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 Server 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 Server. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MAP_H
#define MAP_H
#include <list>
#include <map>
#include <string>
const unsigned int DEFAULT_TILE_WIDTH = 32;
const unsigned int DEFAULT_TILE_HEIGHT = 32;
/**
* A position along a being's path.
* Used to compute each Path Nodes of the path.
*/
struct Position
{
Position(int x, int y):
x(x), y(y)
{ }
int x;
int y;
};
typedef std::list<Position> Path;
typedef Path::iterator PathIterator;
/**
* A meta tile stores additional information about a location on a tile map.
* This is information that doesn't need to be repeated for each tile in each
* layer of the map.
*/
class MetaTile
{
public:
/**
* Constructor.
*/
MetaTile();
// Pathfinding members
int Fcost; /**< Estimation of total path cost */
int Gcost; /**< Cost from start to this location */
int Hcost; /**< Estimated cost to goal */
int whichList; /**< No list, open list or closed list */
int parentX; /**< X coordinate of parent tile */
int parentY; /**< Y coordinate of parent tile */
char blockmask; /**< walkability bitfield */
};
/**
* A location on a tile map. Used for pathfinding, open list.
*/
class Location
{
public:
/**
* Constructor.
*/
Location(int x, int y, MetaTile *tile);
/**
* Comparison operator.
*/
bool operator< (const Location &loc) const;
int x, y;
MetaTile *tile;
};
/**
* A tile map.
*/
class Map
{
public:
enum BlockType
{
BLOCKTYPE_NONE = -1,
BLOCKTYPE_WALL,
BLOCKTYPE_CHARACTER,
BLOCKTYPE_MONSTER,
NB_BLOCKTYPES
};
/**
* Constructor that takes initial map size as parameters.
*/
Map(int width = 0, int height = 0, int twidth = 32, int theight = 32);
/**
* Destructor.
*/
~Map();
/**
* Sets the size of the map. This will destroy any existing map data.
*/
void setSize(int mWidth, int height);
/**
* Get tile reference.
*/
MetaTile *getMetaTile(int x, int y);
/**
* Marks a tile as occupied
*/
void blockTile(int x, int y, BlockType type);
/**
* Marks a tile as unoccupied
*/
void freeTile(int x, int y, BlockType type);
/**
* Gets walkability for a tile with a blocking bitmask
*/
bool getWalk(int x, int y, char walkmask = BLOCKMASK_WALL) const;
/**
* Tells if a tile location is within the map range.
*/
bool contains(int x, int y) const;
/**
* Returns the width of this map.
*/
int getWidth() const
{ return mWidth; }
/**
* Returns the height of this map.
*/
int getHeight() const
{ return mHeight; }
/**
* Returns the tile width of this map.
*/
int getTileWidth() const
{ return tileWidth; }
/**
* Returns the tile height used by this map.
*/
int getTileHeight() const
{ return tileHeight; }
/**
* Returns a general map property defined in the map file
*/
const std::string &getProperty(const std::string &key) const;
/**
* Sets a map property
*/
void setProperty(const std::string& key, const std::string& val)
{ mProperties[key] = val; }
/**
* Find a path from one location to the next.
*/
Path findPath(int startX, int startY,
int destX, int destY,
unsigned char walkmask,
int maxCost = 20);
/**
* Finds a simple path from location to the next.
*/
Path findSimplePath(int startX, int startY,
int destX, int destY,
unsigned char walkmask);
private:
/**
* Blockmasks for different entities
*/
static const unsigned char BLOCKMASK_WALL = 0x80; // = bin 1000 0000
static const unsigned char BLOCKMASK_CHARACTER = 0x01;// = bin 0000 0001
static const unsigned char BLOCKMASK_MONSTER = 0x02; // = bin 0000 0010
int *mOccupation[NB_BLOCKTYPES];
// map properties
int mWidth, mHeight;
int tileWidth, tileHeight;
std::map<std::string, std::string> mProperties;
// Pathfinding members
MetaTile *mMetaTiles;
int onClosedList, onOpenList;
};
#endif
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