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(svn r26850) -Fix: [Makefile] Compilation of strgen requires also defining variable in for platforms like Solaris
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r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb r15759:b4a7f4cce7fb | /* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file tile_map.h Map writing/reading functions for tiles. */
#ifndef TILE_MAP_H
#define TILE_MAP_H
#include "slope_type.h"
#include "map_func.h"
#include "core/bitmath_func.hpp"
#include "settings_type.h"
/**
* Returns the height of a tile
*
* This function returns the height of the northern corner of a tile.
* This is saved in the global map-array. It does not take affect by
* any slope-data of the tile.
*
* @param tile The tile to get the height from
* @return the height of the tile
* @pre tile < MapSize()
*/
static inline uint TileHeight(TileIndex tile)
{
assert(tile < MapSize());
return GB(_m[tile].type_height, 0, 4);
}
/**
* Sets the height of a tile.
*
* This function sets the height of the northern corner of a tile.
*
* @param tile The tile to change the height
* @param height The new height value of the tile
* @pre tile < MapSize()
* @pre heigth <= MAX_TILE_HEIGHT
*/
static inline void SetTileHeight(TileIndex tile, uint height)
{
assert(tile < MapSize());
assert(height <= MAX_TILE_HEIGHT);
SB(_m[tile].type_height, 0, 4, height);
}
/**
* Returns the height of a tile in pixels.
*
* This function returns the height of the northern corner of a tile in pixels.
*
* @param tile The tile to get the height
* @return The height of the tile in pixel
*/
static inline uint TilePixelHeight(TileIndex tile)
{
return TileHeight(tile) * TILE_HEIGHT;
}
/**
* Get the tiletype of a given tile.
*
* @param tile The tile to get the TileType
* @return The tiletype of the tile
* @pre tile < MapSize()
*/
static inline TileType GetTileType(TileIndex tile)
{
assert(tile < MapSize());
return (TileType)GB(_m[tile].type_height, 4, 4);
}
/**
* Check if a tile is within the map (not a border)
*
* @param tile The tile to check
* @return Whether the tile is in the interior of the map
* @pre tile < MapSize()
*/
static inline bool IsInnerTile(TileIndex tile)
{
assert(tile < MapSize());
uint x = TileX(tile);
uint y = TileY(tile);
return x < MapMaxX() && y < MapMaxY() && ((x > 0 && y > 0) || !_settings_game.construction.freeform_edges);
}
/**
* Set the type of a tile
*
* This functions sets the type of a tile. If the type
* MP_VOID is selected the tile must be at the south-west or
* south-east edges of the map and vice versa.
*
* @param tile The tile to save the new type
* @param type The type to save
* @pre tile < MapSize()
* @pre type MP_VOID <=> tile is on the south-east or south-west edge.
*/
static inline void SetTileType(TileIndex tile, TileType type)
{
assert(tile < MapSize());
/* VOID tiles (and no others) are exactly allowed at the lower left and right
* edges of the map. If _settings_game.construction.freeform_edges is true,
* the upper edges of the map are also VOID tiles. */
assert(IsInnerTile(tile) == (type != MP_VOID));
SB(_m[tile].type_height, 4, 4, type);
}
/**
* Checks if a tile is a give tiletype.
*
* This function checks if a tile got the given tiletype.
*
* @param tile The tile to check
* @param type The type to check against
* @return true If the type matches against the type of the tile
*/
static inline bool IsTileType(TileIndex tile, TileType type)
{
return GetTileType(tile) == type;
}
/**
* Checks if a tile is valid
*
* @param tile The tile to check
* @return True if the tile is on the map and not one of MP_VOID.
*/
static inline bool IsValidTile(TileIndex tile)
{
return tile < MapSize() && !IsTileType(tile, MP_VOID);
}
/**
* Returns the owner of a tile
*
* This function returns the owner of a tile. This cannot used
* for tiles which type is one of MP_HOUSE, MP_VOID and MP_INDUSTRY
* as no company owned any of these buildings.
*
* @param tile The tile to check
* @return The owner of the tile
* @pre IsValidTile(tile)
* @pre The type of the tile must not be MP_HOUSE and MP_INDUSTRY
*/
static inline Owner GetTileOwner(TileIndex tile)
{
assert(IsValidTile(tile));
assert(!IsTileType(tile, MP_HOUSE));
assert(!IsTileType(tile, MP_INDUSTRY));
return (Owner)GB(_m[tile].m1, 0, 5);
}
/**
* Sets the owner of a tile
*
* This function sets the owner status of a tile. Note that you cannot
* set a owner for tiles of type MP_HOUSE, MP_VOID and MP_INDUSTRY.
*
* @param tile The tile to change the owner status.
* @param owner The new owner.
* @pre IsValidTile(tile)
* @pre The type of the tile must not be MP_HOUSE and MP_INDUSTRY
*/
static inline void SetTileOwner(TileIndex tile, Owner owner)
{
assert(IsValidTile(tile));
assert(!IsTileType(tile, MP_HOUSE));
assert(!IsTileType(tile, MP_INDUSTRY));
SB(_m[tile].m1, 0, 5, owner);
}
/**
* Checks if a tile belongs to the given owner
*
* @param tile The tile to check
* @param owner The owner to check against
* @return True if a tile belongs the the given owner
*/
static inline bool IsTileOwner(TileIndex tile, Owner owner)
{
return GetTileOwner(tile) == owner;
}
/**
* Set the tropic zone
* @param tile the tile to set the zone of
* @param type the new type
* @pre tile < MapSize()
*/
static inline void SetTropicZone(TileIndex tile, TropicZone type)
{
assert(tile < MapSize());
assert(!IsTileType(tile, MP_VOID) || type == TROPICZONE_NORMAL);
SB(_m[tile].m6, 0, 2, type);
}
/**
* Get the tropic zone
* @param tile the tile to get the zone of
* @pre tile < MapSize()
* @return the zone type
*/
static inline TropicZone GetTropicZone(TileIndex tile)
{
assert(tile < MapSize());
return (TropicZone)GB(_m[tile].m6, 0, 2);
}
/**
* Get the current animation frame
* @param t the tile
* @pre IsTileType(t, MP_HOUSE) || IsTileType(t, MP_OBJECT) || IsTileType(t, MP_INDUSTRY) ||IsTileType(t, MP_STATION)
* @return frame number
*/
static inline byte GetAnimationFrame(TileIndex t)
{
assert(IsTileType(t, MP_HOUSE) || IsTileType(t, MP_OBJECT) || IsTileType(t, MP_INDUSTRY) ||IsTileType(t, MP_STATION));
return _me[t].m7;
}
/**
* Set a new animation frame
* @param t the tile
* @param frame the new frame number
* @pre IsTileType(t, MP_HOUSE) || IsTileType(t, MP_OBJECT) || IsTileType(t, MP_INDUSTRY) ||IsTileType(t, MP_STATION)
*/
static inline void SetAnimationFrame(TileIndex t, byte frame)
{
assert(IsTileType(t, MP_HOUSE) || IsTileType(t, MP_OBJECT) || IsTileType(t, MP_INDUSTRY) ||IsTileType(t, MP_STATION));
_me[t].m7 = frame;
}
Slope GetTileSlope(TileIndex tile, int *h = NULL);
int GetTileZ(TileIndex tile);
int GetTileMaxZ(TileIndex tile);
bool IsTileFlat(TileIndex tile, int *h = NULL);
/**
* Return the slope of a given tile
* @param tile Tile to compute slope of
* @param h If not \c NULL, pointer to storage of z height
* @return Slope of the tile, except for the HALFTILE part
*/
static inline Slope GetTilePixelSlope(TileIndex tile, int *h)
{
Slope s = GetTileSlope(tile, h);
if (h != NULL) *h *= TILE_HEIGHT;
return s;
}
/**
* Get bottom height of the tile
* @param tile Tile to compute height of
* @return Minimum height of the tile
*/
static inline int GetTilePixelZ(TileIndex tile)
{
return GetTileZ(tile) * TILE_HEIGHT;
}
/**
* Get top height of the tile
* @param t Tile to compute height of
* @return Maximum height of the tile
*/
static inline int GetTileMaxPixelZ(TileIndex tile)
{
return GetTileMaxZ(tile) * TILE_HEIGHT;
}
/**
* Calculate a hash value from a tile position
*
* @param x The X coordinate
* @param y The Y coordinate
* @return The hash of the tile
*/
static inline uint TileHash(uint x, uint y)
{
uint hash = x >> 4;
hash ^= x >> 6;
hash ^= y >> 4;
hash -= y >> 6;
return hash;
}
/**
* Get the last two bits of the TileHash
* from a tile position.
*
* @see TileHash()
* @param x The X coordinate
* @param y The Y coordinate
* @return The last two bits from hash of the tile
*/
static inline uint TileHash2Bit(uint x, uint y)
{
return GB(TileHash(x, y), 0, 2);
}
#endif /* TILE_MAP_H */
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