(svn r22331) -Change: When inserting an (automatic) order A in front of an order B, disable modifications of automatic orders for all vehicles currently heading for B as we do not know whether they will reach A or B first. (except for the vehicle causing the insertion of the automatic order itself)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
index 0cbb10b78..3adaab218 100644
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -830,6 +830,13 @@ void InsertOrder(Vehicle *v, Order *new_o, VehicleOrderID sel_ord)
 				u->cur_real_order_index = cur;
 			}
 		}
+		if (sel_ord == u->cur_auto_order_index && u->IsGroundVehicle()) {
+			/* We are inserting an order just before the current automatic order.
+			 * We do not know whether we will reach current automatic or the newly inserted order first.
+			 * So, disable creation of automatic orders until we are on track again. */
+			uint16 &gv_flags = u->GetGroundVehicleFlags();
+			SetBit(gv_flags, GVF_SUPPRESS_AUTOMATIC_ORDERS);
+		}
 		if (sel_ord <= u->cur_auto_order_index) {
 			uint cur = u->cur_auto_order_index + 1;
 			/* Check if we don't go out of bound */