typedef void *VehicleFromPosProc(Vehicle *v, void *data);

void VehicleServiceInDepot(Vehicle *v);

Vehicle *AllocateVehicle(void);

bool AllocateVehicles(Vehicle **vl, int num);

Vehicle *ForceAllocateVehicle(void);

Vehicle *ForceAllocateSpecialVehicle(void);

void VehiclePositionChanged(Vehicle *v);

void AfterLoadVehicles(void);

Vehicle *GetLastVehicleInChain(Vehicle *v);

Vehicle *GetPrevVehicleInChain(const Vehicle *v);

Vehicle *GetFirstVehicleInChain(const Vehicle *v);

uint CountVehiclesInChain(const Vehicle* v);

void DeleteVehicle(Vehicle *v);

void DeleteVehicleChain(Vehicle *v);

void *VehicleFromPos(TileIndex tile, void *data, VehicleFromPosProc *proc);

void CallVehicleTicks(void);

Vehicle *FindVehicleOnTileZ(TileIndex tile, byte z);

void InitializeTrains(void);

byte VehicleRandomBits(void);

bool CanFillVehicle(Vehicle *v);

bool CanRefitTo(EngineID engine_type, CargoID cid_to);

void ViewportAddVehicles(DrawPixelInfo *dpi);

void TrainEnterDepot(Vehicle *v, TileIndex tile);

/* train_cmd.h */

int GetTrainImage(const Vehicle* v, Direction direction);

int GetAircraftImage(const Vehicle* v, Direction direction);

int GetRoadVehImage(const Vehicle* v, Direction direction);

int GetShipImage(const Vehicle* v, Direction direction);

Vehicle *CreateEffectVehicle(int x, int y, int z, EffectVehicle type);

Vehicle *CreateEffectVehicleAbove(int x, int y, int z, EffectVehicle type);

Vehicle *CreateEffectVehicleRel(const Vehicle *v, int x, int y, int z, EffectVehicle type);

uint32 VehicleEnterTile(Vehicle *v, TileIndex tile, int x, int y);

StringID VehicleInTheWayErrMsg(const Vehicle* v);

Vehicle *FindVehicleBetween(TileIndex from, TileIndex to, byte z);

bool UpdateSignalsOnSegment(TileIndex tile, DiagDirection direction);

void SetSignalsOnBothDir(TileIndex tile, byte track);

Vehicle *CheckClickOnVehicle(const ViewPort *vp, int x, int y);