4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
10 /** @file newgrf_railtype.h NewGRF handling of rail types. */
12 #ifndef NEWGRF_RAILTYPE_H
13 #define NEWGRF_RAILTYPE_H
16 #include "newgrf_commons.h"
17 #include "newgrf_spritegroup.h"
19 /** Resolver for the railtype scope. */
20 struct RailTypeScopeResolver
: public ScopeResolver
{
21 TileIndex tile
; ///< Tracktile. For track on a bridge this is the southern bridgehead.
22 TileContext context
; ///< Are we resolving sprites for the upper halftile, or on a bridge?
24 RailTypeScopeResolver(ResolverObject
&ro
, TileIndex tile
, TileContext context
);
26 /* virtual */ uint32
GetRandomBits() const;
27 /* virtual */ uint32
GetVariable(byte variable
, uint32 parameter
, bool *available
) const;
30 /** Resolver object for rail types. */
31 struct RailTypeResolverObject
: public ResolverObject
{
32 RailTypeScopeResolver railtype_scope
; ///< Resolver for the railtype scope.
34 RailTypeResolverObject(const RailtypeInfo
*rti
, TileIndex tile
, TileContext context
, RailTypeSpriteGroup rtsg
, uint32 param1
= 0, uint32 param2
= 0);
36 /* virtual */ ScopeResolver
*GetScope(VarSpriteGroupScope scope
= VSG_SCOPE_SELF
, byte relative
= 0)
39 case VSG_SCOPE_SELF
: return &this->railtype_scope
;
40 default: return ResolverObject::GetScope(scope
, relative
);
44 /* virtual */ const SpriteGroup
*ResolveReal(const RealSpriteGroup
*group
) const;
47 SpriteID
GetCustomRailSprite(const RailtypeInfo
*rti
, TileIndex tile
, RailTypeSpriteGroup rtsg
, TileContext context
= TCX_NORMAL
, uint
*num_results
= NULL
);
48 SpriteID
GetCustomSignalSprite(const RailtypeInfo
*rti
, TileIndex tile
, SignalType type
, SignalVariant var
, SignalState state
, bool gui
= false);
50 uint8
GetReverseRailTypeTranslation(RailType railtype
, const GRFFile
*grffile
);
52 #endif /* NEWGRF_RAILTYPE_H */