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