newgrf_railtype.h

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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/>.
 */
 
#ifndef NEWGRF_RAILTYPE_H
#define NEWGRF_RAILTYPE_H
 
#include "rail.h"
#include "newgrf_commons.h"
#include "newgrf_spritegroup.h"
 
struct RailTypeScopeResolver : public ScopeResolver {
  TileIndex tile;      
  TileContext context; 
  const RailTypeInfo *rti;
 
  RailTypeScopeResolver(ResolverObject &ro, const RailTypeInfo *rti, TileIndex tile, TileContext context)
    : ScopeResolver(ro), tile(tile), context(context), rti(rti)
  {
  }
 
  uint32_t GetRandomBits() const override;
  uint32_t GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const override;
};
 
struct RailTypeResolverObject : public ResolverObject {
  RailTypeScopeResolver railtype_scope; 
 
  RailTypeResolverObject(const RailTypeInfo *rti, TileIndex tile, TileContext context, RailTypeSpriteGroup rtsg, uint32_t param1 = 0, uint32_t param2 = 0);
 
  ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, uint8_t relative = 0) override
  {
    switch (scope) {
      case VSG_SCOPE_SELF: return &this->railtype_scope;
      default:             return ResolverObject::GetScope(scope, relative);
    }
  }
 
  GrfSpecFeature GetFeature() const override;
  uint32_t GetDebugID() const override;
};
 
SpriteID GetCustomRailSprite(const RailTypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context = TCX_NORMAL, uint *num_results = nullptr);
SpriteID GetCustomSignalSprite(const RailTypeInfo *rti, TileIndex tile, SignalType type, SignalVariant var, SignalState state, bool gui = false);
 
RailType GetRailTypeTranslation(uint8_t railtype, const GRFFile *grffile);
uint8_t GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile);
 
#endif /* NEWGRF_RAILTYPE_H */