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60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file engine_override.h Engine override functionality. */
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#ifndef ENGINE_OVERRIDE_H
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#define ENGINE_OVERRIDE_H
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#include "engine_type.h"
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#include "vehicle_type.h"
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#include "3rdparty/robin_hood/robin_hood.h"
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#include <vector>
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struct EngineIDMapping {
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uint32_t grfid; ///< The GRF ID of the file the entity belongs to
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uint16_t internal_id; ///< The internal ID within the GRF file
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VehicleType type; ///< The engine type
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uint8_t substitute_id; ///< The (original) entity ID to use if this GRF is not available (currently not used)
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};
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/**
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* Stores the mapping of EngineID to the internal id of newgrfs.
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* Note: This is not part of Engine, as the data in the EngineOverrideManager and the engine pool get resetted in different cases.
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*/
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struct EngineOverrideManager : std::vector<EngineIDMapping> {
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static const uint NUM_DEFAULT_ENGINES; ///< Number of default entries
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private:
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static uint64_t HashKey(VehicleType type, uint16_t grf_local_id, uint32_t grfid)
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{
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return grfid | (static_cast<uint64_t>(grf_local_id) << 32) | (static_cast<uint64_t>(type) << 48);
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}
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static uint64_t HashKey(const EngineIDMapping &eid)
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{
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return HashKey(eid.type, eid.internal_id, eid.grfid);
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}
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robin_hood::unordered_map<uint64_t, EngineID> mapping_index;
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public:
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void ResetToDefaultMapping();
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EngineID GetID(VehicleType type, uint16_t grf_local_id, uint32_t grfid);
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void AddToIndex(EngineID id);
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void RemoveFromIndex(EngineID id);
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void ReIndex();
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static bool ResetToCurrentNewGRFConfig();
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};
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extern EngineOverrideManager _engine_mngr;
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#endif /* ENGINE_BASE_H */
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