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-rw-r--r--src/newgrf_engine.cpp20
1 files changed, 15 insertions, 5 deletions
diff --git a/src/newgrf_engine.cpp b/src/newgrf_engine.cpp
index a68113df3..4aafa10f9 100644
--- a/src/newgrf_engine.cpp
+++ b/src/newgrf_engine.cpp
@@ -540,9 +540,14 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
/* The cargo translation is specific to the accessing GRF, and thus cannot be cached. */
CargoID common_cargo_type = (v->grf_cache.consist_cargo_information >> 8) & 0xFF;
- /* Unlike everywhere else the cargo translation table is only used since grf version 8, not 7.
- * Note: The grffile == NULL case only happens if this function is called for default vehicles.
- * And this is only done by CheckCaches(). */
+ /* Note:
+ * - Unlike everywhere else the cargo translation table is only used since grf version 8, not 7.
+ * - For translating the cargo type we need to use the GRF which is resolving the variable, which
+ * is object->ro.grffile.
+ * In case of CBID_TRAIN_ALLOW_WAGON_ATTACH this is not the same as v->GetGRF().
+ * - The grffile == NULL case only happens if this function is called for default vehicles.
+ * And this is only done by CheckCaches().
+ */
const GRFFile *grffile = object->ro.grffile;
uint8 common_bitnum = (common_cargo_type == CT_INVALID) ? 0xFF :
(grffile == NULL || grffile->grf_version < 8) ? CargoSpec::Get(common_cargo_type)->bitnum : grffile->cargo_map[common_cargo_type];
@@ -605,7 +610,12 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
*/
const CargoSpec *cs = CargoSpec::Get(v->cargo_type);
- return (cs->classes << 16) | (cs->weight << 8) | v->GetGRF()->cargo_map[v->cargo_type];
+ /* Note:
+ * For translating the cargo type we need to use the GRF which is resolving the variable, which
+ * is object->ro.grffile.
+ * In case of CBID_TRAIN_ALLOW_WAGON_ATTACH this is not the same as v->GetGRF().
+ */
+ return (cs->classes << 16) | (cs->weight << 8) | object->ro.grffile->cargo_map[v->cargo_type];
}
case 0x48: return v->GetEngine()->flags; // Vehicle Type Info
@@ -897,7 +907,7 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
CargoID cargo_type = e->GetDefaultCargoType();
if (cargo_type != CT_INVALID) {
const CargoSpec *cs = CargoSpec::Get(cargo_type);
- return (cs->classes << 16) | (cs->weight << 8) | e->GetGRF()->cargo_map[cargo_type];
+ return (cs->classes << 16) | (cs->weight << 8) | this->ro.grffile->cargo_map[cargo_type];
} else {
return 0x000000FF;
}