/* $Id$ */ /* * 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 object_map.h Map accessors for object tiles. */ #ifndef OBJECT_MAP_H #define OBJECT_MAP_H #include "water_map.h" #include "object_type.h" ObjectType GetObjectType(TileIndex t); /** * Check whether the object on a tile is of a specific type. * @param t Tile to test. * @param type Type to test. * @pre IsTileType(t, MP_OBJECT) * @return True if type matches. */ static inline bool IsObjectType(TileIndex t, ObjectType type) { return GetObjectType(t) == type; } /** * Check whether a tile is a object tile of a specific type. * @param t Tile to test. * @param type Type to test. * @return True if type matches. */ static inline bool IsObjectTypeTile(TileIndex t, ObjectType type) { return IsTileType(t, MP_OBJECT) && GetObjectType(t) == type; } /** * Get the index of which object this tile is attached to. * @param t the tile * @pre IsTileType(t, MP_OBJECT) * @return The ObjectID of the object. */ static inline ObjectID GetObjectIndex(TileIndex t) { assert(IsTileType(t, MP_OBJECT)); return _m[t].m2 | _m[t].m5 << 16; } /** * Get the random bits of this tile. * @param t The tile to get the bits for. * @pre IsTileType(t, MP_OBJECT) * @return The random bits. */ static inline byte GetObjectRandomBits(TileIndex t) { assert(IsTileType(t, MP_OBJECT)); return _m[t].m3; } /** * Make an Object tile. * @param t The tile to make and object tile. * @param o The new owner of the tile. * @param index Index to the object. * @param wc Water class for this object. * @param random Random data to store on the tile */ static inline void MakeObject(TileIndex t, Owner o, ObjectID index, WaterClass wc, byte random) { SetTileType(t, MP_OBJECT); SetTileOwner(t, o); SetWaterClass(t, wc); _m[t].m2 = index; _m[t].m3 = random; _m[t].m4 = 0; _m[t].m5 = index >> 16; SB(_me[t].m6, 2, 4, 0); _me[t].m7 = 0; } #endif /* OBJECT_MAP_H */