# tile_map.h

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    00001 /* $Id: tile_map.h 17248 2009-08-21 20:21:05Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #ifndef TILE_MAP_H
    00013 #define TILE_MAP_H
    00014
    00015 #include "tile_type.h"
    00016 #include "slope_type.h"
    00017 #include "company_type.h"
    00018 #include "map_func.h"
    00019 #include "core/bitmath_func.hpp"
    00020 #include "settings_type.h"
    00021
    00033 static inline uint TileHeight(TileIndex tile)
    00034 {
    00035   assert(tile < MapSize());
    00036   return GB(_m[tile].type_height, 0, 4);
    00037 }
    00038
    00049 static inline void SetTileHeight(TileIndex tile, uint height)
    00050 {
    00051   assert(tile < MapSize());
    00052   assert(height <= MAX_TILE_HEIGHT);
    00053   SB(_m[tile].type_height, 0, 4, height);
    00054 }
    00055
    00064 static inline uint TilePixelHeight(TileIndex tile)
    00065 {
    00066   return TileHeight(tile) * TILE_HEIGHT;
    00067 }
    00068
    00076 static inline TileType GetTileType(TileIndex tile)
    00077 {
    00078   assert(tile < MapSize());
    00079   return (TileType)GB(_m[tile].type_height, 4, 4);
    00080 }
    00081
    00094 static inline void SetTileType(TileIndex tile, TileType type)
    00095 {
    00096   assert(tile < MapSize());
    00097   /* VOID tiles (and no others) are exactly allowed at the lower left and right
    00098    * edges of the map. If _settings_game.construction.freeform_edges is true,
    00099    * the upper edges of the map are also VOID tiles. */
    00100   assert((TileX(tile) == MapMaxX() || TileY(tile) == MapMaxY() || (_settings_game.construction.freeform_edges && (TileX(tile) == 0 || TileY(tile) == 0))) == (type == MP_VOID));
    00101   SB(_m[tile].type_height, 4, 4, type);
    00102 }
    00103
    00113 static inline bool IsTileType(TileIndex tile, TileType type)
    00114 {
    00115   return GetTileType(tile) == type;
    00116 }
    00117
    00124 static inline bool IsValidTile(TileIndex tile)
    00125 {
    00126   return tile < MapSize() && !IsTileType(tile, MP_VOID);
    00127 }
    00128
    00141 static inline Owner GetTileOwner(TileIndex tile)
    00142 {
    00143   assert(IsValidTile(tile));
    00144   assert(!IsTileType(tile, MP_HOUSE));
    00145   assert(!IsTileType(tile, MP_INDUSTRY));
    00146
    00147   return (Owner)_m[tile].m1;
    00148 }
    00149
    00161 static inline void SetTileOwner(TileIndex tile, Owner owner)
    00162 {
    00163   assert(IsValidTile(tile));
    00164   assert(!IsTileType(tile, MP_HOUSE));
    00165   assert(!IsTileType(tile, MP_INDUSTRY));
    00166
    00167   _m[tile].m1 = owner;
    00168 }
    00169
    00177 static inline bool IsTileOwner(TileIndex tile, Owner owner)
    00178 {
    00179   return GetTileOwner(tile) == owner;
    00180 }
    00181
    00188 static inline void SetTropicZone(TileIndex tile, TropicZone type)
    00189 {
    00190   assert(tile < MapSize());
    00191   SB(_m[tile].m6, 0, 2, type);
    00192 }
    00193
    00200 static inline TropicZone GetTropicZone(TileIndex tile)
    00201 {
    00202   assert(tile < MapSize());
    00203   return (TropicZone)GB(_m[tile].m6, 0, 2);
    00204 }
    00205
    00206 Slope GetTileSlope(TileIndex tile, uint *h);
    00207 uint GetTileZ(TileIndex tile);
    00208 uint GetTileMaxZ(TileIndex tile);
    00209
    00210 #endif /* TILE_TYPE_H */