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-rw-r--r--src/ground_vehicle.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ground_vehicle.hpp b/src/ground_vehicle.hpp
index 5be320d0f..84930464d 100644
--- a/src/ground_vehicle.hpp
+++ b/src/ground_vehicle.hpp
@@ -54,6 +54,7 @@ enum GroundVehicleFlags {
* virtual uint16 GetPoweredPartPower(const T *head) const = 0;
* virtual uint16 GetWeight() const = 0;
* virtual byte GetTractiveEffort() const = 0;
+ * virtual byte GetAirDragArea() const = 0;
* virtual AccelStatus GetAccelerationStatus() const = 0;
* virtual uint16 GetCurrentSpeed() const = 0;
* virtual uint32 GetRollingFriction() const = 0;