(svn r3367) Unify the 4 distinct CMD_CHANGE_{AIRCRAFT,ROADVEH,SHIP,TRAIN}_SERVICE_INT commands into one CMD_CHANGE_SERVICE_INT command.

As side effect this is a
-Fix: The default AI tried to change the service intervals of vehicles via the CMD_CHANGE_TRAIN_SERVICE_INT command - regardless of the type of the vehicle - which of course failed for non-trains

1 files changed, 24 insertions, 0 deletions

diff --git a/vehicle.c b/vehicle.c
index 1193d2ebd..444bfaa10 100644
--- a/vehicle.c
+++ b/vehicle.c
@@ -1844,6 +1844,30 @@ int32 CmdNameVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 }
 
 
+/** Change the service interval of a vehicle
+ * @param x,y unused
+ * @param p1 vehicle ID that is being service-interval-changed
+ * @param p2 new service interval
+ */
+int32 CmdChangeServiceInt(int x, int y, uint32 flags, uint32 p1, uint32 p2)
+{
+	Vehicle* v;
+	uint16 serv_int = GetServiceIntervalClamped(p2); /* Double check the service interval from the user-input */
+
+	if (serv_int != p2 || !IsVehicleIndex(p1)) return CMD_ERROR;
+
+	v = GetVehicle(p1);
+
+	if (v->type == 0 || !CheckOwnership(v->owner)) return CMD_ERROR;
+
+	if (flags & DC_EXEC) {
+		v->service_interval = serv_int;
+		InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
+	}
+
+	return 0;
+}
+
 
 static Rect _old_vehicle_coords;