subsidy_base.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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef SUBSIDY_BASE_H
#define SUBSIDY_BASE_H
 
#include "cargo_type.h"
#include "company_type.h"
#include "source_type.h"
#include "subsidy_type.h"
#include "core/pool_type.hpp"
 
using SubsidyPool = Pool<Subsidy, SubsidyID, 1>;
extern SubsidyPool _subsidy_pool;

struct Subsidy : SubsidyPool::PoolItem<&_subsidy_pool> {
  CargoType cargo_type = INVALID_CARGO;  
  uint16_t remaining = 0;    
  CompanyID awarded = CompanyID::Invalid();   
  Source src{}; 
  Source dst{}; 
 
  Subsidy(SubsidyID index, CargoType cargo_type = INVALID_CARGO, Source src = {}, Source dst = {}, uint16_t remaining = 0) :
    SubsidyPool::PoolItem<&_subsidy_pool>(index), cargo_type(cargo_type), remaining(remaining), src(src), dst(dst) {}

  ~Subsidy() { }

  inline bool IsAwarded() const
  {
    return this->awarded != CompanyID::Invalid();
  }
 
  void AwardTo(CompanyID company);
};

static const uint SUBSIDY_OFFER_MONTHS         =  12; 
static const uint SUBSIDY_PAX_MIN_POPULATION   = 400; 
static const uint SUBSIDY_CARGO_MIN_POPULATION = 900; 
static const uint SUBSIDY_MAX_PCT_TRANSPORTED  =  42; 
static const uint SUBSIDY_MAX_DISTANCE         =  70; 
static const uint SUBSIDY_TOWN_CARGO_RADIUS    =   6; 
 
#endif /* SUBSIDY_BASE_H */