/* $Id$ */ /** @file ai_subsidy.cpp Implementation of AISubsidy. */ #include "ai_subsidy.hpp" #include "ai_date.hpp" #include "ai_log.hpp" #include "../../subsidy_base.h" #include "../../station_base.h" #include "../../cargotype.h" /* static */ bool AISubsidy::IsValidSubsidy(SubsidyID subsidy_id) { return ::Subsidy::IsValidID(subsidy_id); } /* static */ bool AISubsidy::IsAwarded(SubsidyID subsidy_id) { if (!IsValidSubsidy(subsidy_id)) return false; return ::Subsidy::Get(subsidy_id)->IsAwarded(); } /* static */ AICompany::CompanyID AISubsidy::GetAwardedTo(SubsidyID subsidy_id) { if (!IsAwarded(subsidy_id)) return AICompany::COMPANY_INVALID; return (AICompany::CompanyID)((byte)::Subsidy::Get(subsidy_id)->awarded); } /* 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()); month += ::Subsidy::Get(subsidy_id)->remaining; 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 ::Subsidy::Get(subsidy_id)->cargo_type; } /* static */ bool AISubsidy::SourceIsTown(SubsidyID subsidy_id) { if (!IsValidSubsidy(subsidy_id) || IsAwarded(subsidy_id)) return false; return ::Subsidy::Get(subsidy_id)->src_type == ST_TOWN; } /* static */ int32 AISubsidy::GetSource(SubsidyID subsidy_id) { if (!IsValidSubsidy(subsidy_id)) return INVALID_STATION; if (IsAwarded(subsidy_id)) { AILog::Error("AISubsidy::GetSource returned INVALID_STATION due to internal changes in the Subsidy logic."); return INVALID_STATION; } return ::Subsidy::Get(subsidy_id)->src; } /* static */ bool AISubsidy::DestinationIsTown(SubsidyID subsidy_id) { if (!IsValidSubsidy(subsidy_id) || IsAwarded(subsidy_id)) return false; return ::Subsidy::Get(subsidy_id)->dst_type == ST_TOWN; } /* static */ int32 AISubsidy::GetDestination(SubsidyID subsidy_id) { if (!IsValidSubsidy(subsidy_id)) return INVALID_STATION; if (IsAwarded(subsidy_id)) { AILog::Error("AISubsidy::GetDestination returned INVALID_STATION due to internal changes in the Subsidy logic."); return INVALID_STATION; } return ::Subsidy::Get(subsidy_id)->dst; }