diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/newgrf.cpp | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp index 1a4894044..6365d86f9 100644 --- a/src/newgrf.cpp +++ b/src/newgrf.cpp @@ -284,15 +284,35 @@ static const uint MAX_STATIONS = 256; /** Temporary engine data used when loading only */ struct GRFTempEngineData { + /** Summary state of refitability properties */ + enum Refittability { + UNSET = 0, ///< No properties assigned. Default refit masks shall be activated. + EMPTY, ///< GRF defined vehicle as not-refittable. The vehicle shall only carry the default cargo. + NONEMPTY, ///< GRF defined the vehicle as refittable. If the refitmask is empty after translation (cargotypes not available), disable the vehicle. + }; + uint16 cargo_allowed; uint16 cargo_disallowed; RailTypeLabel railtypelabel; const GRFFile *refitmask_grf; ///< GRF providing the cargo translation table for the refitmask. - bool refitmask_valid; ///< Did the newgrf set any refittability property? If not, default refittability will be applied. + Refittability refittability; ///< Did the newgrf set any refittability property? If not, default refittability will be applied. bool prop27_set; ///< Did the NewGRF set property 27 (misc flags)? bool prop27_set; ///< Did the NewGRF set property 27 (misc flags)? uint8 rv_max_speed; ///< Temporary storage of RV prop 15, maximum speed in mph/0.8 uint32 ctt_include_mask; ///< Cargo types always included in the refit mask. uint32 ctt_exclude_mask; ///< Cargo types always excluded from the refit mask. + + /** + * Update the summary refittability on setting a refittability property. + * @param non_empty true if the GRF sets the vehicle to be refittable. + */ + void UpdateRefittability(bool non_empty) + { + if (non_empty) { + this->refittability = NONEMPTY; + } else if (this->refittability == UNSET) { + this->refittability = EMPTY; + } + } }; static GRFTempEngineData *_gted; ///< Temporary engine data used during NewGRF loading @@ -1079,7 +1099,7 @@ static ChangeInfoResult RailVehicleChangeInfo(uint engine, int numinfo, int prop case 0x1D: // Refit cargo ei->refit_mask = buf->ReadDWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(ei->refit_mask != 0); _gted[e->index].refitmask_grf = _cur.grffile; break; @@ -1140,12 +1160,12 @@ static ChangeInfoResult RailVehicleChangeInfo(uint engine, int numinfo, int prop case 0x28: // Cargo classes allowed _gted[e->index].cargo_allowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0); break; case 0x29: // Cargo classes disallowed _gted[e->index].cargo_disallowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(false); break; case 0x2A: // Long format introduction date (days since year 0) @@ -1159,12 +1179,12 @@ static ChangeInfoResult RailVehicleChangeInfo(uint engine, int numinfo, int prop case 0x2C: // CTT refit include list case 0x2D: { // CTT refit exclude list uint8 count = buf->ReadByte(); + _gted[e->index].UpdateRefittability(prop == 0x2C && count != 0); while (count--) { CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile); if (ctype == CT_INVALID) continue; SetBit(prop == 0x2C ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask, ctype); } - _gted[e->index].refitmask_valid = true; break; } @@ -1266,7 +1286,7 @@ static ChangeInfoResult RoadVehicleChangeInfo(uint engine, int numinfo, int prop case 0x16: // Cargoes available for refitting ei->refit_mask = buf->ReadDWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(ei->refit_mask != 0); _gted[e->index].refitmask_grf = _cur.grffile; break; @@ -1297,12 +1317,12 @@ static ChangeInfoResult RoadVehicleChangeInfo(uint engine, int numinfo, int prop case 0x1D: // Cargo classes allowed _gted[e->index].cargo_allowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0); break; case 0x1E: // Cargo classes disallowed _gted[e->index].cargo_disallowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(false); break; case 0x1F: // Long format introduction date (days since year 0) @@ -1334,12 +1354,12 @@ static ChangeInfoResult RoadVehicleChangeInfo(uint engine, int numinfo, int prop case 0x24: // CTT refit include list case 0x25: { // CTT refit exclude list uint8 count = buf->ReadByte(); + _gted[e->index].UpdateRefittability(prop == 0x24 && count != 0); while (count--) { CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile); if (ctype == CT_INVALID) continue; SetBit(prop == 0x24 ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask, ctype); } - _gted[e->index].refitmask_valid = true; break; } @@ -1429,7 +1449,7 @@ static ChangeInfoResult ShipVehicleChangeInfo(uint engine, int numinfo, int prop case 0x11: // Cargoes available for refitting ei->refit_mask = buf->ReadDWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(ei->refit_mask != 0); _gted[e->index].refitmask_grf = _cur.grffile; break; @@ -1460,12 +1480,12 @@ static ChangeInfoResult ShipVehicleChangeInfo(uint engine, int numinfo, int prop case 0x18: // Cargo classes allowed _gted[e->index].cargo_allowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0); break; case 0x19: // Cargo classes disallowed _gted[e->index].cargo_disallowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(false); break; case 0x1A: // Long format introduction date (days since year 0) @@ -1493,12 +1513,12 @@ static ChangeInfoResult ShipVehicleChangeInfo(uint engine, int numinfo, int prop case 0x1E: // CTT refit include list case 0x1F: { // CTT refit exclude list uint8 count = buf->ReadByte(); + _gted[e->index].UpdateRefittability(prop == 0x1E && count != 0); while (count--) { CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile); if (ctype == CT_INVALID) continue; SetBit(prop == 0x1E ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask, ctype); } - _gted[e->index].refitmask_valid = true; break; } @@ -1585,7 +1605,7 @@ static ChangeInfoResult AircraftVehicleChangeInfo(uint engine, int numinfo, int case 0x13: // Cargoes available for refitting ei->refit_mask = buf->ReadDWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(ei->refit_mask != 0); _gted[e->index].refitmask_grf = _cur.grffile; break; @@ -1608,12 +1628,12 @@ static ChangeInfoResult AircraftVehicleChangeInfo(uint engine, int numinfo, int case 0x18: // Cargo classes allowed _gted[e->index].cargo_allowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed != 0); break; case 0x19: // Cargo classes disallowed _gted[e->index].cargo_disallowed = buf->ReadWord(); - _gted[e->index].refitmask_valid = true; + _gted[e->index].UpdateRefittability(false); break; case 0x1A: // Long format introduction date (days since year 0) @@ -1631,12 +1651,12 @@ static ChangeInfoResult AircraftVehicleChangeInfo(uint engine, int numinfo, int case 0x1D: // CTT refit include list case 0x1E: { // CTT refit exclude list uint8 count = buf->ReadByte(); + _gted[e->index].UpdateRefittability(prop == 0x1D && count != 0); while (count--) { CargoID ctype = GetCargoTranslation(buf->ReadByte(), _cur.grffile); if (ctype == CT_INVALID) continue; SetBit(prop == 0x1D ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask, ctype); } - _gted[e->index].refitmask_valid = true; break; } @@ -8046,14 +8066,14 @@ static void CalculateRefitMasks() const uint8 *cargo_map_for_first_refittable = NULL; /* Did the newgrf specify any refitting? If not, use defaults. */ - if (_gted[engine].refitmask_valid) { + if (_gted[engine].refittability != GRFTempEngineData::UNSET) { uint32 mask = 0; uint32 not_mask = 0; uint32 xor_mask = 0; /* If the original masks set by the grf are zero, the vehicle shall only carry the default cargo. * Note: After applying the translations, the vehicle may end up carrying no defined cargo. It becomes unavailable in that case. */ - only_defaultcargo = (ei->refit_mask == 0 && _gted[engine].cargo_allowed == 0 && _gted[engine].ctt_include_mask == 0); + only_defaultcargo = _gted[engine].refittability == GRFTempEngineData::EMPTY; const GRFFile *file = _gted[engine].refitmask_grf; if (file == NULL) file = e->GetGRF(); |