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-rw-r--r--vehicle.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/vehicle.c b/vehicle.c
index 9674a2a99..b78cfad79 100644
--- a/vehicle.c
+++ b/vehicle.c
@@ -1659,13 +1659,35 @@ static int32 ReplaceVehicle(Vehicle **w, byte flags)
if (flags & DC_EXEC) {
new_v = GetVehicle(_new_vehicle_id);
*w = new_v; //we changed the vehicle, so MaybeReplaceVehicle needs to work on the new one. Now we tell it what the new one is
+ CargoID new_cargo_type = old_v->cargo_type;
/* refit if needed */
- if (old_v->cargo_type != new_v->cargo_type && old_v->cargo_cap != 0 && new_v->cargo_cap != 0) {// some train engines do not have cargo capacity
+ if (old_v->type == VEH_Train && old_v->cargo_cap == 0 && new_v->cargo_cap != 0) {
+ // the old engine didn't have cargo capacity, but the new one does
+ // now we will figure out what cargo the train is carrying and refit to fit this
+ Vehicle *v = old_v;
+ CargoID cargo_type_buffer = new_v->cargo_type;
+ printf("A: %d\n", cargo_type_buffer);
+ do {
+ if (v->cargo_cap == 0) continue;
+ printf("B: %d\n", cargo_type_buffer);
+ if (v->cargo_type == new_v->cargo_type) {
+ // the default type is already being carried on the train. No need to refit
+ cargo_type_buffer = new_v->cargo_type;
+ break;
+ }
+ printf("C: %d\n", cargo_type_buffer);
+ // now we know that the vehicle is carrying cargo and that it's not the same as
+ cargo_type_buffer = v->cargo_type;
+ } while ((v=v->next) != NULL);
+ new_cargo_type = cargo_type_buffer;
+ }
+
+ if (new_cargo_type != new_v->cargo_type && new_v->cargo_cap != 0) {
// we add the refit cost to cost, so it's added to the cost animation
// it's not in the calculation of having enough money to actually do the replace since it's rather hard to do by design, but since
// we pay for it, it's nice to make the cost animation include it
- int32 temp_cost = DoCommand(0, new_v->index, old_v->cargo_type, DC_EXEC, CMD_REFIT_VEH(new_v->type));
+ int32 temp_cost = DoCommand(0, new_v->index, new_cargo_type, DC_EXEC, CMD_REFIT_VEH(new_v->type));
if (!CmdFailed(temp_cost)) cost += temp_cost;
}
if (new_v->type == VEH_Train && HASBIT(old_v->u.rail.flags, VRF_REVERSE_DIRECTION) && !IsMultiheaded(new_v) && !(new_v->next != NULL && IsArticulatedPart(new_v->next))) {