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-rw-r--r--src/vehicle.cpp17
1 files changed, 12 insertions, 5 deletions
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index f76a49b96..ac5f93fbc 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -1848,11 +1848,18 @@ int32 CmdCloneVehicle(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
if (flags & DC_EXEC) {
w = GetVehicle(_new_vehicle_id);
- if (v->cargo_type != w->cargo_type || v->cargo_subtype != w->cargo_subtype) {
- // we can't pay for refitting because we can't estimate refitting costs for a vehicle before it's build
- // if we pay for it anyway, the cost and the estimated cost will not be the same and we will have an assert
- DoCommand(0, w->index, v->cargo_type | (v->cargo_subtype << 8), flags, GetCmdRefitVeh(v));
- }
+ Vehicle *w2 = w;
+ Vehicle *v2 = v;
+ do {
+ if (v2->cargo_type != w2->cargo_type || v2->cargo_subtype != w2->cargo_subtype) {
+ /* We can't pay for refitting because we can't estimate refitting costs for a vehicle before it's build.
+ * If we pay for it anyway, the cost and the estimated cost will not be the same and we will have an assert.
+ * We need to check the whole chain if it is a train because some newgrf articulated engines can refit some units only (and not the front) */
+ DoCommand(0, w->index, v2->cargo_type | (v2->cargo_subtype << 8), flags, GetCmdRefitVeh(v));
+ break; // We learned that the engine in question needed a refit. No need to check anymore
+ }
+ } while (v->type == VEH_Train && (w2 = w2->next) != NULL && (v2 = v2->next) != NULL);
+
if (v->type == VEH_Train && HASBIT(v->u.rail.flags, VRF_REVERSE_DIRECTION)) {
SETBIT(w->u.rail.flags, VRF_REVERSE_DIRECTION);
}