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Location: cpp/openttd-patchpack/source/src/ai/api/ai_subsidy.cpp - annotation
r12029:5b077ec055c0
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(svn r16441) -Codechange: new class SpecializedVehicle used as superclass for all vehicle types
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/** @file ai_subsidy.cpp Implementation of AISubsidy. */
#include "ai_subsidy.hpp"
#include "ai_date.hpp"
#include "../../subsidy_type.h"
#include "../../station_base.h"
#include "../../cargotype.h"
/* static */ bool AISubsidy::IsValidSubsidy(SubsidyID subsidy_id)
{
return subsidy_id < lengthof(_subsidies) && _subsidies[subsidy_id].cargo_type != CT_INVALID;
}
/* static */ bool AISubsidy::IsAwarded(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id)) return false;
return _subsidies[subsidy_id].age >= 12;
}
/* static */ AICompany::CompanyID AISubsidy::GetAwardedTo(SubsidyID subsidy_id)
{
if (!IsAwarded(subsidy_id)) return AICompany::COMPANY_INVALID;
return (AICompany::CompanyID)((byte)Station::Get(_subsidies[subsidy_id].from)->owner);
}
/* static */ int32 AISubsidy::GetExpireDate(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id)) return -1;
int year = AIDate::GetYear(AIDate::GetCurrentDate());
int month = AIDate::GetMonth(AIDate::GetCurrentDate());
if (IsAwarded(subsidy_id)) {
month += 24 - _subsidies[subsidy_id].age;
} else {
month += 12 - _subsidies[subsidy_id].age;
}
year += (month - 1) / 12;
month = ((month - 1) % 12) + 1;
return AIDate::GetDate(year, month, 1);
}
/* static */ CargoID AISubsidy::GetCargoType(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id)) return CT_INVALID;
return _subsidies[subsidy_id].cargo_type;
}
/* static */ bool AISubsidy::SourceIsTown(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id) || IsAwarded(subsidy_id)) return false;
return GetCargo(GetCargoType(subsidy_id))->town_effect == TE_PASSENGERS ||
GetCargo(GetCargoType(subsidy_id))->town_effect == TE_MAIL;
}
/* static */ int32 AISubsidy::GetSource(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id)) return INVALID_STATION;
return _subsidies[subsidy_id].from;
}
/* static */ bool AISubsidy::DestinationIsTown(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id) || IsAwarded(subsidy_id)) return false;
switch (GetCargo(GetCargoType(subsidy_id))->town_effect) {
case TE_PASSENGERS:
case TE_MAIL:
case TE_GOODS:
case TE_FOOD:
return true;
default:
return false;
}
}
/* static */ int32 AISubsidy::GetDestination(SubsidyID subsidy_id)
{
if (!IsValidSubsidy(subsidy_id)) return INVALID_STATION;
return _subsidies[subsidy_id].to;
}
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