vehicle_base.h

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00001 /* $Id: vehicle_base.h 23640 2011-12-20 17:57:56Z truebrain $ */
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 "track_type.h"
00016 #include "command_type.h"
00017 #include "order_base.h"
00018 #include "cargopacket.h"
00019 #include "texteff.hpp"
00020 #include "engine_type.h"
00021 #include "order_func.h"
00022 #include "transport_type.h"
00023 #include "group_type.h"
00024 
00026 enum VehStatus {
00027   VS_HIDDEN          = 0x01, 
00028   VS_STOPPED         = 0x02, 
00029   VS_UNCLICKABLE     = 0x04, 
00030   VS_DEFPAL          = 0x08, 
00031   VS_TRAIN_SLOWING   = 0x10, 
00032   VS_SHADOW          = 0x20, 
00033   VS_AIRCRAFT_BROKEN = 0x40, 
00034   VS_CRASHED         = 0x80, 
00035 };
00036 
00038 enum VehicleFlags {
00039   VF_LOADING_FINISHED,        
00040   VF_CARGO_UNLOADING,         
00041   VF_BUILT_AS_PROTOTYPE,      
00042   VF_TIMETABLE_STARTED,       
00043   VF_AUTOFILL_TIMETABLE,      
00044   VF_AUTOFILL_PRES_WAIT_TIME, 
00045   VF_STOP_LOADING,            
00046   VF_PATHFINDER_LOST,         
00047 };
00048 
00050 enum NewGRFCacheValidValues {
00051   NCVV_POSITION_CONSIST_LENGTH   = 0, 
00052   NCVV_POSITION_SAME_ID_LENGTH   = 1, 
00053   NCVV_CONSIST_CARGO_INFORMATION = 2, 
00054   NCVV_COMPANY_INFORMATION       = 3, 
00055   NCVV_END,                           
00056 };
00057 
00059 struct NewGRFCache {
00060   /* Values calculated when they are requested for the first time after invalidating the NewGRF cache. */
00061   uint32 position_consist_length;   
00062   uint32 position_same_id_length;   
00063   uint32 consist_cargo_information; 
00064   uint32 company_information;       
00065   uint8  cache_valid;               
00066 };
00067 
00069 enum VisualEffect {
00070   VE_OFFSET_START        = 0, 
00071   VE_OFFSET_COUNT        = 4, 
00072   VE_OFFSET_CENTRE       = 8, 
00073 
00074   VE_TYPE_START          = 4, 
00075   VE_TYPE_COUNT          = 2, 
00076   VE_TYPE_DEFAULT        = 0, 
00077   VE_TYPE_STEAM          = 1, 
00078   VE_TYPE_DIESEL         = 2, 
00079   VE_TYPE_ELECTRIC       = 3, 
00080 
00081   VE_DISABLE_EFFECT      = 6, 
00082   VE_DISABLE_WAGON_POWER = 7, 
00083 
00084   VE_DEFAULT = 0xFF,          
00085 };
00086 
00092 enum GroundVehicleSubtypeFlags {
00093   GVSF_FRONT            = 0, 
00094   GVSF_ARTICULATED_PART = 1, 
00095   GVSF_WAGON            = 2, 
00096   GVSF_ENGINE           = 3, 
00097   GVSF_FREE_WAGON       = 4, 
00098   GVSF_MULTIHEADED      = 5, 
00099 };
00100 
00102 struct VehicleCache {
00103   uint16 cached_max_speed;        
00104   uint16 cached_cargo_age_period; 
00105 
00106   byte cached_vis_effect;  
00107 };
00108 
00110 typedef Pool<Vehicle, VehicleID, 512, 0xFF000> VehiclePool;
00111 extern VehiclePool _vehicle_pool;
00112 
00113 /* Some declarations of functions, so we can make them friendly */
00114 struct SaveLoad;
00115 struct GroundVehicleCache;
00116 extern const SaveLoad *GetVehicleDescription(VehicleType vt);
00117 struct LoadgameState;
00118 extern bool LoadOldVehicle(LoadgameState *ls, int num);
00119 extern void FixOldVehicles();
00120 
00121 struct GRFFile;
00122 
00124 struct Vehicle : VehiclePool::PoolItem<&_vehicle_pool>, BaseVehicle {
00125 private:
00126   Vehicle *next;                      
00127   Vehicle *previous;                  
00128   Vehicle *first;                     
00129 
00130   Vehicle *next_shared;               
00131   Vehicle *previous_shared;           
00132 public:
00133   friend const SaveLoad *GetVehicleDescription(VehicleType vt); 
00134   friend void FixOldVehicles();
00135   friend void AfterLoadVehicles(bool part_of_load);             
00136   friend bool LoadOldVehicle(LoadgameState *ls, int num);       
00137 
00138   char *name;                         
00139 
00140   TileIndex tile;                     
00141 
00147   TileIndex dest_tile;
00148 
00149   Money profit_this_year;             
00150   Money profit_last_year;             
00151   Money value;                        
00152 
00153   CargoPayment *cargo_payment;        
00154 
00155   /* Used for timetabling. */
00156   uint32 current_order_time;          
00157   int32 lateness_counter;             
00158   Date timetable_start;               
00159 
00160   Rect coord;                         
00161 
00162   Vehicle *next_hash;                 
00163   Vehicle **prev_hash;                
00164 
00165   Vehicle *next_new_hash;             
00166   Vehicle **prev_new_hash;            
00167   Vehicle **old_new_hash;             
00168 
00169   SpriteID colourmap;                 
00170 
00171   /* Related to age and service time */
00172   Year build_year;                    
00173   Date age;                           
00174   Date max_age;                       
00175   Date date_of_last_service;          
00176   Date service_interval;              
00177   uint16 reliability;                 
00178   uint16 reliability_spd_dec;         
00179   byte breakdown_ctr;                 
00180   byte breakdown_delay;               
00181   byte breakdowns_since_last_service; 
00182   byte breakdown_chance;              
00183 
00184   int32 x_pos;                        
00185   int32 y_pos;                        
00186   int32 z_pos;                        
00187   DirectionByte direction;            
00188 
00189   OwnerByte owner;                    
00190 
00195   byte spritenum;
00196   SpriteID cur_image;                 
00197   byte x_extent;                      
00198   byte y_extent;                      
00199   byte z_extent;                      
00200   int8 x_bb_offs;                     
00201   int8 y_bb_offs;                     
00202   int8 x_offs;                        
00203   int8 y_offs;                        
00204   EngineID engine_type;               
00205 
00206   TextEffectID fill_percent_te_id;    
00207   UnitID unitnumber;                  
00208 
00209   uint16 cur_speed;                   
00210   byte subspeed;                      
00211   byte acceleration;                  
00212   uint32 motion_counter;              
00213   byte progress;                      
00214 
00215   byte random_bits;                   
00216   byte waiting_triggers;              
00217 
00218   StationID last_station_visited;     
00219 
00220   CargoID cargo_type;                 
00221   byte cargo_subtype;                 
00222   uint16 cargo_cap;                   
00223   VehicleCargoList cargo;             
00224   uint16 cargo_age_counter;           
00225 
00226   byte day_counter;                   
00227   byte tick_counter;                  
00228   byte running_ticks;                 
00229 
00230   byte vehstatus;                     
00231   Order current_order;                
00232   VehicleOrderID cur_real_order_index;
00233   VehicleOrderID cur_implicit_order_index;
00234 
00235   union {
00236     OrderList *list;            
00237     Order     *old;             
00238   } orders;                           
00239 
00240   byte vehicle_flags;                 
00241 
00242   uint16 load_unload_ticks;           
00243   GroupID group_id;                   
00244   byte subtype;                       
00245 
00246   NewGRFCache grf_cache;              
00247   VehicleCache vcache;                
00248 
00249   Vehicle(VehicleType type = VEH_INVALID);
00250 
00251   void PreDestructor();
00253   virtual ~Vehicle();
00254 
00255   void BeginLoading();
00256   void LeaveStation();
00257 
00258   GroundVehicleCache *GetGroundVehicleCache();
00259   const GroundVehicleCache *GetGroundVehicleCache() const;
00260 
00261   uint16 &GetGroundVehicleFlags();
00262   const uint16 &GetGroundVehicleFlags() const;
00263 
00264   void DeleteUnreachedImplicitOrders();
00265 
00266   void HandleLoading(bool mode = false);
00267 
00276   virtual void MarkDirty() {}
00277 
00283   virtual void UpdateDeltaXY(Direction direction) {}
00284 
00298   inline uint GetOldAdvanceSpeed(uint speed)
00299   {
00300     return (this->direction & 1) ? speed : speed * 3 / 4;
00301   }
00302 
00315   static inline uint GetAdvanceSpeed(uint speed)
00316   {
00317     return speed * 3 / 4;
00318   }
00319 
00327   inline uint GetAdvanceDistance()
00328   {
00329     return (this->direction & 1) ? 192 : 256;
00330   }
00331 
00336   virtual ExpensesType GetExpenseType(bool income) const { return EXPENSES_OTHER; }
00337 
00341   virtual void PlayLeaveStationSound() const {}
00342 
00346   virtual bool IsPrimaryVehicle() const { return false; }
00347 
00348   const Engine *GetEngine() const;
00349 
00355   virtual SpriteID GetImage(Direction direction, EngineImageType image_type) const { return 0; }
00356 
00357   const GRFFile *GetGRF() const;
00358   uint32 GetGRFID() const;
00359 
00364   inline void InvalidateNewGRFCache()
00365   {
00366     this->grf_cache.cache_valid = 0;
00367   }
00368 
00373   inline void InvalidateNewGRFCacheOfChain()
00374   {
00375     for (Vehicle *u = this; u != NULL; u = u->Next()) {
00376       u->InvalidateNewGRFCache();
00377     }
00378   }
00379 
00384   inline bool IsGroundVehicle() const
00385   {
00386     return this->type == VEH_TRAIN || this->type == VEH_ROAD;
00387   }
00388 
00393   virtual int GetDisplaySpeed() const { return 0; }
00394 
00399   virtual int GetDisplayMaxSpeed() const { return 0; }
00400 
00405   virtual Money GetRunningCost() const { return 0; }
00406 
00411   virtual bool IsInDepot() const { return false; }
00412 
00417   virtual bool IsStoppedInDepot() const { return this->IsInDepot() && (this->vehstatus & VS_STOPPED) != 0; }
00418 
00423   virtual bool Tick() { return true; };
00424 
00428   virtual void OnNewDay() {};
00429 
00435   virtual uint Crash(bool flooded = false);
00436 
00449   virtual Trackdir GetVehicleTrackdir() const { return INVALID_TRACKDIR; }
00450 
00455   Money GetDisplayRunningCost() const { return (this->GetRunningCost() >> 8); }
00456 
00461   Money GetDisplayProfitThisYear() const { return (this->profit_this_year >> 8); }
00462 
00467   Money GetDisplayProfitLastYear() const { return (this->profit_last_year >> 8); }
00468 
00469   void SetNext(Vehicle *next);
00470 
00476   inline Vehicle *Next() const { return this->next; }
00477 
00483   inline Vehicle *Previous() const { return this->previous; }
00484 
00489   inline Vehicle *First() const { return this->first; }
00490 
00495   inline Vehicle *Last()
00496   {
00497     Vehicle *v = this;
00498     while (v->Next() != NULL) v = v->Next();
00499     return v;
00500   }
00501 
00506   inline const Vehicle *Last() const
00507   {
00508     const Vehicle *v = this;
00509     while (v->Next() != NULL) v = v->Next();
00510     return v;
00511   }
00512 
00518   inline Vehicle *Move(int n)
00519   {
00520     Vehicle *v = this;
00521     if (n < 0) {
00522       for (int i = 0; i != n && v != NULL; i--) v = v->Previous();
00523     } else {
00524       for (int i = 0; i != n && v != NULL; i++) v = v->Next();
00525     }
00526     return v;
00527   }
00528 
00533   inline Order *GetFirstOrder() const { return (this->orders.list == NULL) ? NULL : this->orders.list->GetFirstOrder(); }
00534 
00535   void AddToShared(Vehicle *shared_chain);
00536   void RemoveFromShared();
00537 
00542   inline Vehicle *NextShared() const { return this->next_shared; }
00543 
00548   inline Vehicle *PreviousShared() const { return this->previous_shared; }
00549 
00554   inline Vehicle *FirstShared() const { return (this->orders.list == NULL) ? this->First() : this->orders.list->GetFirstSharedVehicle(); }
00555 
00560   inline bool IsOrderListShared() const { return this->orders.list != NULL && this->orders.list->IsShared(); }
00561 
00566   inline VehicleOrderID GetNumOrders() const { return (this->orders.list == NULL) ? 0 : this->orders.list->GetNumOrders(); }
00567 
00572   inline VehicleOrderID GetNumManualOrders() const { return (this->orders.list == NULL) ? 0 : this->orders.list->GetNumManualOrders(); }
00573 
00580   inline void CopyVehicleConfigAndStatistics(const Vehicle *src)
00581   {
00582     this->unitnumber = src->unitnumber;
00583 
00584     this->cur_real_order_index = src->cur_real_order_index;
00585     this->cur_implicit_order_index = src->cur_implicit_order_index;
00586     this->current_order = src->current_order;
00587     this->dest_tile  = src->dest_tile;
00588 
00589     this->profit_this_year = src->profit_this_year;
00590     this->profit_last_year = src->profit_last_year;
00591 
00592     this->current_order_time = src->current_order_time;
00593     this->lateness_counter = src->lateness_counter;
00594     this->timetable_start = src->timetable_start;
00595 
00596     if (HasBit(src->vehicle_flags, VF_TIMETABLE_STARTED)) SetBit(this->vehicle_flags, VF_TIMETABLE_STARTED);
00597     if (HasBit(src->vehicle_flags, VF_AUTOFILL_TIMETABLE)) SetBit(this->vehicle_flags, VF_AUTOFILL_TIMETABLE);
00598     if (HasBit(src->vehicle_flags, VF_AUTOFILL_PRES_WAIT_TIME)) SetBit(this->vehicle_flags, VF_AUTOFILL_PRES_WAIT_TIME);
00599 
00600     this->service_interval = src->service_interval;
00601   }
00602 
00603 
00604   bool HandleBreakdown();
00605 
00606   bool NeedsAutorenewing(const Company *c) const;
00607 
00608   bool NeedsServicing() const;
00609   bool NeedsAutomaticServicing() const;
00610 
00618   virtual TileIndex GetOrderStationLocation(StationID station) { return INVALID_TILE; }
00619 
00628   virtual bool FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse) { return false; }
00629 
00630   CommandCost SendToDepot(DoCommandFlag flags, DepotCommand command);
00631 
00632   void UpdateVisualEffect(bool allow_power_change = true);
00633   void ShowVisualEffect() const;
00634 
00635 private:
00640   void SkipToNextRealOrderIndex()
00641   {
00642     if (this->GetNumManualOrders() > 0) {
00643       /* Advance to next real order */
00644       do {
00645         this->cur_real_order_index++;
00646         if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
00647       } while (this->GetOrder(this->cur_real_order_index)->IsType(OT_IMPLICIT));
00648     } else {
00649       this->cur_real_order_index = 0;
00650     }
00651   }
00652 
00653 public:
00659   void IncrementImplicitOrderIndex()
00660   {
00661     if (this->cur_implicit_order_index == this->cur_real_order_index) {
00662       /* Increment real order index as well */
00663       this->SkipToNextRealOrderIndex();
00664     }
00665 
00666     assert(this->cur_real_order_index == 0 || this->cur_real_order_index < this->GetNumOrders());
00667 
00668     /* Advance to next implicit order */
00669     do {
00670       this->cur_implicit_order_index++;
00671       if (this->cur_implicit_order_index >= this->GetNumOrders()) this->cur_implicit_order_index = 0;
00672     } while (this->cur_implicit_order_index != this->cur_real_order_index && !this->GetOrder(this->cur_implicit_order_index)->IsType(OT_IMPLICIT));
00673 
00674     InvalidateVehicleOrder(this, 0);
00675   }
00676 
00683   void IncrementRealOrderIndex()
00684   {
00685     if (this->cur_implicit_order_index == this->cur_real_order_index) {
00686       /* Increment both real and implicit order */
00687       this->IncrementImplicitOrderIndex();
00688     } else {
00689       /* Increment real order only */
00690       this->SkipToNextRealOrderIndex();
00691       InvalidateVehicleOrder(this, 0);
00692     }
00693   }
00694 
00698   void UpdateRealOrderIndex()
00699   {
00700     /* Make sure the index is valid */
00701     if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
00702 
00703     if (this->GetNumManualOrders() > 0) {
00704       /* Advance to next real order */
00705       while (this->GetOrder(this->cur_real_order_index)->IsType(OT_IMPLICIT)) {
00706         this->cur_real_order_index++;
00707         if (this->cur_real_order_index >= this->GetNumOrders()) this->cur_real_order_index = 0;
00708       }
00709     } else {
00710       this->cur_real_order_index = 0;
00711     }
00712   }
00713 
00719   inline Order *GetOrder(int index) const
00720   {
00721     return (this->orders.list == NULL) ? NULL : this->orders.list->GetOrderAt(index);
00722   }
00723 
00728   inline Order *GetLastOrder() const
00729   {
00730     return (this->orders.list == NULL) ? NULL : this->orders.list->GetLastOrder();
00731   }
00732 
00733   bool IsEngineCountable() const;
00734   bool HasEngineType() const;
00735   bool HasDepotOrder() const;
00736   void HandlePathfindingResult(bool path_found);
00737 
00742   inline bool IsFrontEngine() const
00743   {
00744     return this->IsGroundVehicle() && HasBit(this->subtype, GVSF_FRONT);
00745   }
00746 
00751   inline bool IsArticulatedPart() const
00752   {
00753     return this->IsGroundVehicle() && HasBit(this->subtype, GVSF_ARTICULATED_PART);
00754   }
00755 
00760   inline bool HasArticulatedPart() const
00761   {
00762     return this->Next() != NULL && this->Next()->IsArticulatedPart();
00763   }
00764 
00770   inline Vehicle *GetNextArticulatedPart() const
00771   {
00772     assert(this->HasArticulatedPart());
00773     return this->Next();
00774   }
00775 
00780   inline Vehicle *GetFirstEnginePart()
00781   {
00782     Vehicle *v = this;
00783     while (v->IsArticulatedPart()) v = v->Previous();
00784     return v;
00785   }
00786 
00791   inline const Vehicle *GetFirstEnginePart() const
00792   {
00793     const Vehicle *v = this;
00794     while (v->IsArticulatedPart()) v = v->Previous();
00795     return v;
00796   }
00797 
00802   inline Vehicle *GetLastEnginePart()
00803   {
00804     Vehicle *v = this;
00805     while (v->HasArticulatedPart()) v = v->GetNextArticulatedPart();
00806     return v;
00807   }
00808 
00813   inline Vehicle *GetNextVehicle() const
00814   {
00815     const Vehicle *v = this;
00816     while (v->HasArticulatedPart()) v = v->GetNextArticulatedPart();
00817 
00818     /* v now contains the last articulated part in the engine */
00819     return v->Next();
00820   }
00821 
00826   inline Vehicle *GetPrevVehicle() const
00827   {
00828     Vehicle *v = this->Previous();
00829     while (v != NULL && v->IsArticulatedPart()) v = v->Previous();
00830 
00831     return v;
00832   }
00833 };
00834 
00840 #define FOR_ALL_VEHICLES_FROM(var, start) FOR_ALL_ITEMS_FROM(Vehicle, vehicle_index, var, start)
00841 
00846 #define FOR_ALL_VEHICLES(var) FOR_ALL_VEHICLES_FROM(var, 0)
00847 
00852 template <class T, VehicleType Type>
00853 struct SpecializedVehicle : public Vehicle {
00854   static const VehicleType EXPECTED_TYPE = Type; 
00855 
00856   typedef SpecializedVehicle<T, Type> SpecializedVehicleBase; 
00857 
00861   inline SpecializedVehicle<T, Type>() : Vehicle(Type) { }
00862 
00867   inline T *First() const { return (T *)this->Vehicle::First(); }
00868 
00873   inline T *Last() { return (T *)this->Vehicle::Last(); }
00874 
00879   inline const T *Last() const { return (const T *)this->Vehicle::Last(); }
00880 
00885   inline T *Next() const { return (T *)this->Vehicle::Next(); }
00886 
00891   inline T *Previous() const { return (T *)this->Vehicle::Previous(); }
00892 
00898   inline T *GetNextArticulatedPart() { return (T *)this->Vehicle::GetNextArticulatedPart(); }
00899 
00905   inline T *GetNextArticulatedPart() const { return (T *)this->Vehicle::GetNextArticulatedPart(); }
00906 
00911   inline T *GetFirstEnginePart() { return (T *)this->Vehicle::GetFirstEnginePart(); }
00912 
00917   inline const T *GetFirstEnginePart() const { return (const T *)this->Vehicle::GetFirstEnginePart(); }
00918 
00923   inline T *GetLastEnginePart() { return (T *)this->Vehicle::GetLastEnginePart(); }
00924 
00929   inline T *GetNextVehicle() const { return (T *)this->Vehicle::GetNextVehicle(); }
00930 
00935   inline T *GetPrevVehicle() const { return (T *)this->Vehicle::GetPrevVehicle(); }
00936 
00942   static inline bool IsValidID(size_t index)
00943   {
00944     return Vehicle::IsValidID(index) && Vehicle::Get(index)->type == Type;
00945   }
00946 
00951   static inline T *Get(size_t index)
00952   {
00953     return (T *)Vehicle::Get(index);
00954   }
00955 
00960   static inline T *GetIfValid(size_t index)
00961   {
00962     return IsValidID(index) ? Get(index) : NULL;
00963   }
00964 
00970   static inline T *From(Vehicle *v)
00971   {
00972     assert(v->type == Type);
00973     return (T *)v;
00974   }
00975 
00981   static inline const T *From(const Vehicle *v)
00982   {
00983     assert(v->type == Type);
00984     return (const T *)v;
00985   }
00986 
00992   inline void UpdateViewport(bool moved, bool turned)
00993   {
00994     extern void VehicleMove(Vehicle *v, bool update_viewport);
00995 
00996     /* Explicitly choose method to call to prevent vtable dereference -
00997      * it gives ~3% runtime improvements in games with many vehicles */
00998     if (turned) ((T *)this)->T::UpdateDeltaXY(this->direction);
00999     SpriteID old_image = this->cur_image;
01000     this->cur_image = ((T *)this)->T::GetImage(this->direction, EIT_ON_MAP);
01001     if (moved || this->cur_image != old_image) VehicleMove(this, true);
01002   }
01003 };
01004 
01010 #define FOR_ALL_VEHICLES_OF_TYPE(name, var) FOR_ALL_ITEMS_FROM(name, vehicle_index, var, 0) if (var->type == name::EXPECTED_TYPE)
01011 
01015 struct DisasterVehicle FINAL : public SpecializedVehicle<DisasterVehicle, VEH_DISASTER> {
01016   SpriteID image_override;            
01017   VehicleID big_ufo_destroyer_target; 
01018 
01020   DisasterVehicle() : SpecializedVehicleBase() {}
01022   virtual ~DisasterVehicle() {}
01023 
01024   void UpdateDeltaXY(Direction direction);
01025   bool Tick();
01026 };
01027 
01032 #define FOR_ALL_DISASTERVEHICLES(var) FOR_ALL_VEHICLES_OF_TYPE(DisasterVehicle, var)
01033 
01035 struct FreeUnitIDGenerator {
01036   bool *cache;  
01037   UnitID maxid; 
01038   UnitID curid; 
01039 
01040   FreeUnitIDGenerator(VehicleType type, CompanyID owner);
01041   UnitID NextID();
01042 
01044   ~FreeUnitIDGenerator() { free(this->cache); }
01045 };
01046 
01048 static const int32 INVALID_COORD = 0x7fffffff;
01049 
01050 #endif /* VEHICLE_BASE_H */