# vehicle_base.h

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #ifndef VEHICLE_BASE_H
    00013 #define VEHICLE_BASE_H
    00014
    00015 #include "core/smallmap_type.hpp"
    00016 #include "track_type.h"
    00017 #include "command_type.h"
    00018 #include "order_base.h"
    00019 #include "cargopacket.h"
    00020 #include "texteff.hpp"
    00021 #include "engine_type.h"
    00022 #include "order_func.h"
    00023 #include "transport_type.h"
    00024 #include "group_type.h"
    00025
    00027 enum VehStatus {
    00028   VS_HIDDEN          = 0x01,
    00029   VS_STOPPED         = 0x02,
    00030   VS_UNCLICKABLE     = 0x04,
    00031   VS_DEFPAL          = 0x08,
    00032   VS_TRAIN_SLOWING   = 0x10,
    00033   VS_SHADOW          = 0x20,
    00034   VS_AIRCRAFT_BROKEN = 0x40,
    00035   VS_CRASHED         = 0x80,
    00036 };
    00037
    00039 enum VehicleFlags {
    00040   VF_LOADING_FINISHED,
    00041   VF_CARGO_UNLOADING,
    00042   VF_BUILT_AS_PROTOTYPE,
    00043   VF_TIMETABLE_STARTED,
    00044   VF_AUTOFILL_TIMETABLE,
    00045   VF_AUTOFILL_PRES_WAIT_TIME,
    00046   VF_STOP_LOADING,
    00047   VF_PATHFINDER_LOST,
    00048 };
    00049
    00051 enum NewGRFCacheValidValues {
    00052   NCVV_POSITION_CONSIST_LENGTH   = 0,
    00053   NCVV_POSITION_SAME_ID_LENGTH   = 1,
    00054   NCVV_CONSIST_CARGO_INFORMATION = 2,
    00055   NCVV_COMPANY_INFORMATION       = 3,
    00056   NCVV_END,
    00057 };
    00058
    00060 struct NewGRFCache {
    00061   /* Values calculated when they are requested for the first time after invalidating the NewGRF cache. */
    00062   uint32 position_consist_length;
    00063   uint32 position_same_id_length;
    00064   uint32 consist_cargo_information;
    00065   uint32 company_information;
    00066   uint8  cache_valid;
    00067 };
    00068
    00070 enum VisualEffect {
    00071   VE_OFFSET_START        = 0,
    00072   VE_OFFSET_COUNT        = 4,
    00073   VE_OFFSET_CENTRE       = 8,
    00074
    00075   VE_TYPE_START          = 4,
    00076   VE_TYPE_COUNT          = 2,
    00077   VE_TYPE_DEFAULT        = 0,
    00078   VE_TYPE_STEAM          = 1,
    00079   VE_TYPE_DIESEL         = 2,
    00080   VE_TYPE_ELECTRIC       = 3,
    00081
    00082   VE_DISABLE_EFFECT      = 6,
    00083   VE_DISABLE_WAGON_POWER = 7,
    00084
    00085   VE_DEFAULT = 0xFF,
    00086 };
    00087
    00093 enum GroundVehicleSubtypeFlags {
    00094   GVSF_FRONT            = 0,
    00095   GVSF_ARTICULATED_PART = 1,
    00096   GVSF_WAGON            = 2,
    00097   GVSF_ENGINE           = 3,
    00098   GVSF_FREE_WAGON       = 4,
    00099   GVSF_MULTIHEADED      = 5,
    00100 };
    00101
    00103 struct VehicleCache {
    00104   uint16 cached_max_speed;
    00105   uint16 cached_cargo_age_period;
    00106
    00107   byte cached_vis_effect;
    00108 };
    00109
    00111 typedef Pool<Vehicle, VehicleID, 512, 0xFF000> VehiclePool;
    00112 extern VehiclePool _vehicle_pool;
    00113
    00114 /* Some declarations of functions, so we can make them friendly */
    00115 struct SaveLoad;
    00116 struct GroundVehicleCache;
    00117 extern const SaveLoad *GetVehicleDescription(VehicleType vt);
    00118 struct LoadgameState;
    00119 extern bool LoadOldVehicle(LoadgameState *ls, int num);
    00120 extern void FixOldVehicles();
    00121
    00122 struct GRFFile;
    00123
    00125 struct Vehicle : VehiclePool::PoolItem<&_vehicle_pool>, BaseVehicle {
    00126 private:
    00127   Vehicle *next;
    00128   Vehicle *previous;
    00129   Vehicle *first;
    00130
    00131   Vehicle *next_shared;
    00132   Vehicle *previous_shared;
    00133
    00134 public:
    00135   friend const SaveLoad *GetVehicleDescription(VehicleType vt);
    00136   friend void FixOldVehicles();
    00137   friend void AfterLoadVehicles(bool part_of_load);
    00138   friend bool LoadOldVehicle(LoadgameState *ls, int num);
    00139
    00140   char *name;
    00141
    00142   TileIndex tile;
    00143
    00149   TileIndex dest_tile;
    00150
    00151   Money profit_this_year;
    00152   Money profit_last_year;
    00153   Money value;
    00154
    00155   CargoPayment *cargo_payment;
    00156
    00157   /* Used for timetabling. */
    00158   uint32 current_order_time;
    00159   int32 lateness_counter;
    00160   Date timetable_start;
    00161
    00162   Rect coord;
    00163
    00164   Vehicle *hash_viewport_next;
    00165   Vehicle **hash_viewport_prev;
    00166
    00167   Vehicle *hash_tile_next;
    00168   Vehicle **hash_tile_prev;
    00169   Vehicle **hash_tile_current;
    00170
    00171   SpriteID colourmap;
    00172
    00173   /* Related to age and service time */
    00174   Year build_year;
    00175   Date age;
    00176   Date max_age;
    00177   Date date_of_last_service;
    00178   Date service_interval;
    00179   uint16 reliability;
    00180   uint16 reliability_spd_dec;
    00181   byte breakdown_ctr;
    00182   byte breakdown_delay;
    00183   byte breakdowns_since_last_service;
    00184   byte breakdown_chance;
    00185
    00186   int32 x_pos;
    00187   int32 y_pos;
    00188   int32 z_pos;
    00189   DirectionByte direction;
    00190
    00191   OwnerByte owner;
    00192
    00197   byte spritenum;
    00198   SpriteID cur_image;
    00199   byte x_extent;
    00200   byte y_extent;
    00201   byte z_extent;
    00202   int8 x_bb_offs;
    00203   int8 y_bb_offs;
    00204   int8 x_offs;
    00205   int8 y_offs;
    00206   EngineID engine_type;
    00207
    00208   TextEffectID fill_percent_te_id;
    00209   UnitID unitnumber;
    00210
    00211   uint16 cur_speed;
    00212   byte subspeed;
    00213   byte acceleration;
    00214   uint32 motion_counter;
    00215   byte progress;
    00216
    00217   byte random_bits;
    00218   byte waiting_triggers;
    00219
    00220   StationID last_station_visited;
    00221   StationID last_loading_station;
    00222
    00223   CargoID cargo_type;
    00224   byte cargo_subtype;
    00225   uint16 cargo_cap;
    00226   uint16 refit_cap;
    00227   VehicleCargoList cargo;
    00228   uint16 cargo_age_counter;
    00229
    00230   byte day_counter;
    00231   byte tick_counter;
    00232   byte running_ticks;
    00233
    00234   byte vehstatus;
    00235   Order current_order;
    00236   VehicleOrderID cur_real_order_index;
    00237   VehicleOrderID cur_implicit_order_index;
    00238
    00239   union {
    00240     OrderList *list;
    00241     Order     *old;
    00242   } orders;
    00243
    00244   byte vehicle_flags;
    00245
    00246   uint16 load_unload_ticks;
    00247   GroupID group_id;
    00248   byte subtype;
    00249
    00250   NewGRFCache grf_cache;
    00251   VehicleCache vcache;
    00252
    00253   Vehicle(VehicleType type = VEH_INVALID);
    00254
    00255   void PreDestructor();
    00257   virtual ~Vehicle();
    00258
    00259   void BeginLoading();
    00260   void CancelReservation(StationID next, Station *st);
    00261   void LeaveStation();
    00262
    00263   GroundVehicleCache *GetGroundVehicleCache();
    00264   const GroundVehicleCache *GetGroundVehicleCache() const;
    00265
    00266   uint16 &GetGroundVehicleFlags();
    00267   const uint16 &GetGroundVehicleFlags() const;
    00268
    00269   void DeleteUnreachedImplicitOrders();
    00270
    00271   void HandleLoading(bool mode = false);
    00272
    00273   void GetConsistFreeCapacities(SmallMap<CargoID, uint> &capacities) const;
    00274
    00275   uint GetConsistTotalCapacity() const;
    00276
    00285   virtual void MarkDirty() {}
    00286
    00292   virtual void UpdateDeltaXY(Direction direction) {}
    00293
    00307   inline uint GetOldAdvanceSpeed(uint speed)
    00308   {
    00309     return (this->direction & 1) ? speed : speed * 3 / 4;
    00310   }
    00311
    00324   static inline uint GetAdvanceSpeed(uint speed)
    00325   {
    00326     return speed * 3 / 4;
    00327   }
    00328
    00336   inline uint GetAdvanceDistance()
    00337   {
    00338     return (this->direction & 1) ? 192 : 256;
    00339   }
    00340
    00345   virtual ExpensesType GetExpenseType(bool income) const { return EXPENSES_OTHER; }
    00346
    00350   virtual void PlayLeaveStationSound() const {}
    00351
    00355   virtual bool IsPrimaryVehicle() const { return false; }
    00356
    00357   const Engine *GetEngine() const;
    00358
    00364   virtual SpriteID GetImage(Direction direction, EngineImageType image_type) const { return 0; }
    00365
    00366   const GRFFile *GetGRF() const;
    00367   uint32 GetGRFID() const;
    00368
    00373   inline void InvalidateNewGRFCache()
    00374   {
    00375     this->grf_cache.cache_valid = 0;
    00376   }
    00377
    00382   inline void InvalidateNewGRFCacheOfChain()
    00383   {
    00384     for (Vehicle *u = this; u != NULL; u = u->Next()) {
    00385       u->InvalidateNewGRFCache();
    00386     }
    00387   }
    00388
    00393   inline bool IsGroundVehicle() const
    00394   {
    00395     return this->type == VEH_TRAIN || this->type == VEH_ROAD;
    00396   }
    00397
    00402   virtual int GetDisplaySpeed() const { return 0; }
    00403
    00408   virtual int GetDisplayMaxSpeed() const { return 0; }
    00409
    00414   virtual Money GetRunningCost() const { return 0; }
    00415
    00420   virtual bool IsInDepot() const { return false; }
    00421
    00426   virtual bool IsStoppedInDepot() const { return this->IsInDepot() && (this->vehstatus & VS_STOPPED) != 0; }
    00427
    00432   virtual bool Tick() { return true; };
    00433
    00437   virtual void OnNewDay() {};
    00438
    00444   virtual uint Crash(bool flooded = false);
    00445
    00458   virtual Trackdir GetVehicleTrackdir() const { return INVALID_TRACKDIR; }
    00459
    00464   Money GetDisplayRunningCost() const { return (this->GetRunningCost() >> 8); }
    00465
    00470   Money GetDisplayProfitThisYear() const { return (this->profit_this_year >> 8); }
    00471
    00476   Money GetDisplayProfitLastYear() const { return (this->profit_last_year >> 8); }
    00477
    00478   void SetNext(Vehicle *next);
    00479
    00485   inline Vehicle *Next() const { return this->next; }
    00486
    00492   inline Vehicle *Previous() const { return this->previous; }
    00493
    00498   inline Vehicle *First() const { return this->first; }
    00499
    00504   inline Vehicle *Last()
    00505   {
    00506     Vehicle *v = this;
    00507     while (v->Next() != NULL) v = v->Next();
    00508     return v;
    00509   }
    00510
    00515   inline const Vehicle *Last() const
    00516   {
    00517     const Vehicle *v = this;
    00518     while (v->Next() != NULL) v = v->Next();
    00519     return v;
    00520   }
    00521
    00527   inline Vehicle *Move(int n)
    00528   {
    00529     Vehicle *v = this;
    00530     if (n < 0) {
    00531       for (int i = 0; i != n && v != NULL; i--) v = v->Previous();
    00532     } else {
    00533       for (int i = 0; i != n && v != NULL; i++) v = v->Next();
    00534     }
    00535     return v;
    00536   }
    00537
    00542   inline Order *GetFirstOrder() const { return (this->orders.list == NULL) ? NULL : this->orders.list->GetFirstOrder(); }
    00543
    00544   void AddToShared(Vehicle *shared_chain);
    00545   void RemoveFromShared();
    00546
    00551   inline Vehicle *NextShared() const { return this->next_shared; }
    00552
    00557   inline Vehicle *PreviousShared() const { return this->previous_shared; }
    00558
    00563   inline Vehicle *FirstShared() const { return (this->orders.list == NULL) ? this->First() : this->orders.list->GetFirstSharedVehicle(); }
    00564
    00569   inline bool IsOrderListShared() const { return this->orders.list != NULL && this->orders.list->IsShared(); }
    00570
    00575   inline VehicleOrderID GetNumOrders() const { return (this->orders.list == NULL) ? 0 : this->orders.list->GetNumOrders(); }
    00576
    00581   inline VehicleOrderID GetNumManualOrders() const { return (this->orders.list == NULL) ? 0 : this->orders.list->GetNumManualOrders(); }
    00582
    00587   inline StationID GetNextStoppingStation() const
    00588   {
    00589     return (this->orders.list == NULL) ? INVALID_STATION : this->orders.list->GetNextStoppingStation(this);
    00590   }
    00591
    00592   void RefreshNextHopsStats();
    00593
    00600   inline void CopyVehicleConfigAndStatistics(const Vehicle *src)
    00601   {
    00602     this->unitnumber = src->unitnumber;
    00603
    00604     this->cur_real_order_index = src->cur_real_order_index;
    00605     this->cur_implicit_order_index = src->cur_implicit_order_index;
    00606     this->current_order = src->current_order;
    00607     this->dest_tile  = src->dest_tile;
    00608
    00609     this->profit_this_year = src->profit_this_year;
    00610     this->profit_last_year = src->profit_last_year;
    00611
    00612     this->current_order_time = src->current_order_time;
    00613     this->lateness_counter = src->lateness_counter;
    00614     this->timetable_start = src->timetable_start;
    00615
    00616     if (HasBit(src->vehicle_flags, VF_TIMETABLE_STARTED)) SetBit(this->vehicle_flags, VF_TIMETABLE_STARTED);
    00617     if (HasBit(src->vehicle_flags, VF_AUTOFILL_TIMETABLE)) SetBit(this->vehicle_flags, VF_AUTOFILL_TIMETABLE);
    00618     if (HasBit(src->vehicle_flags, VF_AUTOFILL_PRES_WAIT_TIME)) SetBit(this->vehicle_flags, VF_AUTOFILL_PRES_WAIT_TIME);
    00619
    00620     this->service_interval = src->service_interval;
    00621   }
    00622
    00623
    00624   bool HandleBreakdown();
    00625
    00626   bool NeedsAutorenewing(const Company *c) const;
    00627
    00628   bool NeedsServicing() const;
    00629   bool NeedsAutomaticServicing() const;
    00630
    00638   virtual TileIndex GetOrderStationLocation(StationID station) { return INVALID_TILE; }
    00639
    00648   virtual bool FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse) { return false; }
    00649
    00650   CommandCost SendToDepot(DoCommandFlag flags, DepotCommand command);
    00651
    00652   void UpdateVisualEffect(bool allow_power_change = true);
    00653   void ShowVisualEffect() const;
    00654
    00655 private:
    00660   void SkipToNextRealOrderIndex()
    00661   {
    00662     if (this->GetNumManualOrders() > 0) {
    00663       /* Advance to next real order */
    00664       do {
    00665         this->cur_real_order_index++;
    00666         if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
    00667       } while (this->GetOrder(this->cur_real_order_index)->IsType(OT_IMPLICIT));
    00668     } else {
    00669       this->cur_real_order_index = 0;
    00670     }
    00671   }
    00672
    00673 public:
    00679   void IncrementImplicitOrderIndex()
    00680   {
    00681     if (this->cur_implicit_order_index == this->cur_real_order_index) {
    00682       /* Increment real order index as well */
    00683       this->SkipToNextRealOrderIndex();
    00684     }
    00685
    00686     assert(this->cur_real_order_index == 0 || this->cur_real_order_index < this->GetNumOrders());
    00687
    00688     /* Advance to next implicit order */
    00689     do {
    00690       this->cur_implicit_order_index++;
    00691       if (this->cur_implicit_order_index >= this->GetNumOrders()) this->cur_implicit_order_index = 0;
    00692     } while (this->cur_implicit_order_index != this->cur_real_order_index && !this->GetOrder(this->cur_implicit_order_index)->IsType(OT_IMPLICIT));
    00693
    00694     InvalidateVehicleOrder(this, 0);
    00695   }
    00696
    00703   void IncrementRealOrderIndex()
    00704   {
    00705     if (this->cur_implicit_order_index == this->cur_real_order_index) {
    00706       /* Increment both real and implicit order */
    00707       this->IncrementImplicitOrderIndex();
    00708     } else {
    00709       /* Increment real order only */
    00710       this->SkipToNextRealOrderIndex();
    00711       InvalidateVehicleOrder(this, 0);
    00712     }
    00713   }
    00714
    00718   void UpdateRealOrderIndex()
    00719   {
    00720     /* Make sure the index is valid */
    00721     if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
    00722
    00723     if (this->GetNumManualOrders() > 0) {
    00724       /* Advance to next real order */
    00725       while (this->GetOrder(this->cur_real_order_index)->IsType(OT_IMPLICIT)) {
    00726         this->cur_real_order_index++;
    00727         if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
    00728       }
    00729     } else {
    00730       this->cur_real_order_index = 0;
    00731     }
    00732   }
    00733
    00739   inline Order *GetOrder(int index) const
    00740   {
    00741     return (this->orders.list == NULL) ? NULL : this->orders.list->GetOrderAt(index);
    00742   }
    00743
    00748   inline Order *GetLastOrder() const
    00749   {
    00750     return (this->orders.list == NULL) ? NULL : this->orders.list->GetLastOrder();
    00751   }
    00752
    00753   bool IsEngineCountable() const;
    00754   bool HasEngineType() const;
    00755   bool HasDepotOrder() const;
    00756   void HandlePathfindingResult(bool path_found);
    00757
    00762   inline bool IsFrontEngine() const
    00763   {
    00764     return this->IsGroundVehicle() && HasBit(this->subtype, GVSF_FRONT);
    00765   }
    00766
    00771   inline bool IsArticulatedPart() const
    00772   {
    00773     return this->IsGroundVehicle() && HasBit(this->subtype, GVSF_ARTICULATED_PART);
    00774   }
    00775
    00780   inline bool HasArticulatedPart() const
    00781   {
    00782     return this->Next() != NULL && this->Next()->IsArticulatedPart();
    00783   }
    00784
    00790   inline Vehicle *GetNextArticulatedPart() const
    00791   {
    00792     assert(this->HasArticulatedPart());
    00793     return this->Next();
    00794   }
    00795
    00800   inline Vehicle *GetFirstEnginePart()
    00801   {
    00802     Vehicle *v = this;
    00803     while (v->IsArticulatedPart()) v = v->Previous();
    00804     return v;
    00805   }
    00806
    00811   inline const Vehicle *GetFirstEnginePart() const
    00812   {
    00813     const Vehicle *v = this;
    00814     while (v->IsArticulatedPart()) v = v->Previous();
    00815     return v;
    00816   }
    00817
    00822   inline Vehicle *GetLastEnginePart()
    00823   {
    00824     Vehicle *v = this;
    00825     while (v->HasArticulatedPart()) v = v->GetNextArticulatedPart();
    00826     return v;
    00827   }
    00828
    00833   inline Vehicle *GetNextVehicle() const
    00834   {
    00835     const Vehicle *v = this;
    00836     while (v->HasArticulatedPart()) v = v->GetNextArticulatedPart();
    00837
    00838     /* v now contains the last articulated part in the engine */
    00839     return v->Next();
    00840   }
    00841
    00846   inline Vehicle *GetPrevVehicle() const
    00847   {
    00848     Vehicle *v = this->Previous();
    00849     while (v != NULL && v->IsArticulatedPart()) v = v->Previous();
    00850
    00851     return v;
    00852   }
    00853 };
    00854
    00860 #define FOR_ALL_VEHICLES_FROM(var, start) FOR_ALL_ITEMS_FROM(Vehicle, vehicle_index, var, start)
    00861
    00866 #define FOR_ALL_VEHICLES(var) FOR_ALL_VEHICLES_FROM(var, 0)
    00867
    00872 template <class T, VehicleType Type>
    00873 struct SpecializedVehicle : public Vehicle {
    00874   static const VehicleType EXPECTED_TYPE = Type;
    00875
    00876   typedef SpecializedVehicle<T, Type> SpecializedVehicleBase;
    00877
    00881   inline SpecializedVehicle<T, Type>() : Vehicle(Type) { }
    00882
    00887   inline T *First() const { return (T *)this->Vehicle::First(); }
    00888
    00893   inline T *Last() { return (T *)this->Vehicle::Last(); }
    00894
    00899   inline const T *Last() const { return (const T *)this->Vehicle::Last(); }
    00900
    00905   inline T *Next() const { return (T *)this->Vehicle::Next(); }
    00906
    00911   inline T *Previous() const { return (T *)this->Vehicle::Previous(); }
    00912
    00918   inline T *GetNextArticulatedPart() { return (T *)this->Vehicle::GetNextArticulatedPart(); }
    00919
    00925   inline T *GetNextArticulatedPart() const { return (T *)this->Vehicle::GetNextArticulatedPart(); }
    00926
    00931   inline T *GetFirstEnginePart() { return (T *)this->Vehicle::GetFirstEnginePart(); }
    00932
    00937   inline const T *GetFirstEnginePart() const { return (const T *)this->Vehicle::GetFirstEnginePart(); }
    00938
    00943   inline T *GetLastEnginePart() { return (T *)this->Vehicle::GetLastEnginePart(); }
    00944
    00949   inline T *GetNextVehicle() const { return (T *)this->Vehicle::GetNextVehicle(); }
    00950
    00955   inline T *GetPrevVehicle() const { return (T *)this->Vehicle::GetPrevVehicle(); }
    00956
    00962   static inline bool IsValidID(size_t index)
    00963   {
    00964     return Vehicle::IsValidID(index) && Vehicle::Get(index)->type == Type;
    00965   }
    00966
    00971   static inline T *Get(size_t index)
    00972   {
    00973     return (T *)Vehicle::Get(index);
    00974   }
    00975
    00980   static inline T *GetIfValid(size_t index)
    00981   {
    00982     return IsValidID(index) ? Get(index) : NULL;
    00983   }
    00984
    00990   static inline T *From(Vehicle *v)
    00991   {
    00992     assert(v->type == Type);
    00993     return (T *)v;
    00994   }
    00995
    01001   static inline const T *From(const Vehicle *v)
    01002   {
    01003     assert(v->type == Type);
    01004     return (const T *)v;
    01005   }
    01006
    01012   inline void UpdateViewport(bool force_update, bool update_delta)
    01013   {
    01014     extern void VehicleUpdateViewport(Vehicle *v, bool dirty);
    01015
    01016     /* Explicitly choose method to call to prevent vtable dereference -
    01017      * it gives ~3% runtime improvements in games with many vehicles */
    01018     if (update_delta) ((T *)this)->T::UpdateDeltaXY(this->direction);
    01019     SpriteID old_image = this->cur_image;
    01020     this->cur_image = ((T *)this)->T::GetImage(this->direction, EIT_ON_MAP);
    01021     if (force_update || this->cur_image != old_image) VehicleUpdateViewport(this, true);
    01022   }
    01023 };
    01024
    01030 #define FOR_ALL_VEHICLES_OF_TYPE(name, var) FOR_ALL_ITEMS_FROM(name, vehicle_index, var, 0) if (var->type == name::EXPECTED_TYPE)
    01031
    01035 struct DisasterVehicle FINAL : public SpecializedVehicle<DisasterVehicle, VEH_DISASTER> {
    01036   SpriteID image_override;
    01037   VehicleID big_ufo_destroyer_target;
    01038
    01040   DisasterVehicle() : SpecializedVehicleBase() {}
    01042   virtual ~DisasterVehicle() {}
    01043
    01044   void UpdateDeltaXY(Direction direction);
    01045   bool Tick();
    01046 };
    01047
    01052 #define FOR_ALL_DISASTERVEHICLES(var) FOR_ALL_VEHICLES_OF_TYPE(DisasterVehicle, var)
    01053
    01055 struct FreeUnitIDGenerator {
    01056   bool *cache;
    01057   UnitID maxid;
    01058   UnitID curid;
    01059
    01060   FreeUnitIDGenerator(VehicleType type, CompanyID owner);
    01061   UnitID NextID();
    01062
    01064   ~FreeUnitIDGenerator() { free(this->cache); }
    01065 };
    01066
    01068 static const int32 INVALID_COORD = 0x7fffffff;
    01069
    01070 #endif /* VEHICLE_BASE_H */