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Location: cpp/openttd-patchpack/source/src/object_map.h
r15899:3bbe04d427d2
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(svn r20593) -Fix: (rlongago, r20547): long ago the service interval was int16, after which is got converted to Date except in the order backup. Much later I copied the savegame snippets from a vehicle and applied that on the order backup. Presto, reading/writing 32 bits (of Date) into 16 bits of ancient style service interval. That would then "spoil" the name pointer and that eventually crashes OpenTTD as it's likely to be an invalid pointer.
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/*
* 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 "tile_map.h"
#include "water_map.h"
#include "object_type.h"
/**
* Gets the ObjectType of the given object tile
* @param t the tile to get the type from.
* @pre IsTileType(t, MP_OBJECT)
* @return the type.
*/
static inline ObjectType GetObjectType(TileIndex t)
{
assert(IsTileType(t, MP_OBJECT));
return (ObjectType)_m[t].m5;
}
/**
* 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;
}
/**
* Does the given tile have a transmitter?
* @param t the tile to inspect.
* @return true if and only if the tile has a transmitter.
*/
static inline bool IsTransmitterTile(TileIndex t)
{
return IsTileType(t, MP_OBJECT) && GetObjectType(t) == OBJECT_TRANSMITTER;
}
/**
* Is this object tile an 'owned land' tile?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_OBJECT)
* @return true if and only if the tile is an 'owned land' tile.
*/
static inline bool IsOwnedLand(TileIndex t)
{
assert(IsTileType(t, MP_OBJECT));
return GetObjectType(t) == OBJECT_OWNED_LAND;
}
/**
* Is the given tile (pre-)owned by someone (the little flags)?
* @param t the tile to inspect.
* @return true if and only if the tile is an 'owned land' tile.
*/
static inline bool IsOwnedLandTile(TileIndex t)
{
return IsTileType(t, MP_OBJECT) && IsOwnedLand(t);
}
/**
* Is this object tile a HQ tile?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_OBJECT)
* @return true if and only if the tile is a HQ tile.
*/
static inline bool IsCompanyHQ(TileIndex t)
{
assert(IsTileType(t, MP_OBJECT));
return _m[t].m5 == OBJECT_HQ;
}
/**
* Is this object tile a statue?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_OBJECT)
* @return true if and only if the tile is a statue.
*/
static inline bool IsStatue(TileIndex t)
{
assert(IsTileType(t, MP_OBJECT));
return GetObjectType(t) == OBJECT_STATUE;
}
/**
* Is the given tile a statue?
* @param t the tile to inspect.
* @return true if and only if the tile is a statue.
*/
static inline bool IsStatueTile(TileIndex t)
{
return IsTileType(t, MP_OBJECT) && IsStatue(t);
}
/**
* Get animation stage/counter of this tile.
* @param t The tile to query.
* @pre IsTileType(t, MP_OBJECT)
* @return The animation 'stage' of the tile.
*/
static inline byte GetObjectAnimationStage(TileIndex t)
{
assert(IsTileType(t, MP_OBJECT));
return _m[t].m3;
}
/**
* Set animation stage/counter of this tile.
* @param t The tile to query.
* @param stage The stage of this tile.
* @pre IsTileType(t, MP_OBJECT)
*/
static inline void SetObjectAnimationStage(TileIndex t, uint8 stage)
{
assert(IsTileType(t, MP_OBJECT));
_m[t].m3 = stage;
}
/**
* Make an Object tile.
* @note do not use this function directly. Use one of the other Make* functions.
* @param t The tile to make and object tile.
* @param u The object type of the tile.
* @param o The new owner of the tile.
* @param index Index to the object.
* @param wc Water class for this obect.
*/
static inline void MakeObject(TileIndex t, ObjectType u, Owner o, ObjectID index, WaterClass wc)
{
SetTileType(t, MP_OBJECT);
SetTileOwner(t, o);
SetWaterClass(t, wc);
_m[t].m2 = index;
_m[t].m3 = 0;
_m[t].m4 = 0;
_m[t].m5 = u;
SB(_m[t].m6, 2, 4, 0);
_me[t].m7 = 0;
}
#endif /* OBJECT_MAP_H */
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