newgrf_town.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_TOWN_H
#define NEWGRF_TOWN_H
 
#include "town_type.h"
#include "newgrf_spritegroup.h"
 
struct TownScopeResolver : public ScopeResolver {
  Town *t;       
  bool readonly; 
 
  TownScopeResolver(ResolverObject &ro, Town *t, bool readonly)
    : ScopeResolver(ro), t(t), readonly(readonly)
  {
  }
 
  uint32_t GetVariable(byte variable, [[maybe_unused]] uint32_t parameter, bool *available) const override;
  void StorePSA(uint reg, int32_t value) override;
};
 
struct TownResolverObject : public ResolverObject {
  TownScopeResolver town_scope; 
 
  TownResolverObject(const struct GRFFile *grffile, Town *t, bool readonly);
 
  ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, byte relative = 0) override
  {
    switch (scope) {
      case VSG_SCOPE_SELF: return &town_scope;
      default: return ResolverObject::GetScope(scope, relative);
    }
  }
};
 
#endif /* NEWGRF_TOWN_H */