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Location: cpp/openttd-patchpack/source/src/ai/api/ai_subsidy.cpp - annotation
r12648:24c912bd53f6
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(svn r17113) -Change [FS#265][FS#2094][FS#2589]: apply the subsidy when subsidy's destination is in station's catchment area and cargo packets originate from subsidy's source
-Change [FS#1134]: subsidies aren't bound to stations after awarding anymore, they still apply to town or industry, no matter what station is used for loading and unloading. Awarded subsidies from older savegames are lost
-Change [NoAI]: due to these changes, AISubsidy::GetSource and AISubsidy::GetDestination now return STATION_INVALID for awarded subsidies
-Change [FS#1134]: subsidies aren't bound to stations after awarding anymore, they still apply to town or industry, no matter what station is used for loading and unloading. Awarded subsidies from older savegames are lost
-Change [NoAI]: due to these changes, AISubsidy::GetSource and AISubsidy::GetDestination now return STATION_INVALID for awarded subsidies
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/** @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;
}
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