src/vehicle_func.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file vehicle_func.h Functions related to vehicles. */
  11
  12 #ifndef VEHICLE_FUNC_H
  13 #define VEHICLE_FUNC_H
  14
  15 #include "gfx_type.h"
  16 #include "direction_type.h"
  17 #include "command_type.h"
  18 #include "vehicle_type.h"
  19 #include "engine_type.h"
  20 #include "transport_type.h"
  21 #include "newgrf_config.h"
  22 #include "track_type.h"
  23 #include "livery.h"
  24
  25 #define is_custom_sprite(x) (x >= 0xFD)
  26 #define IS_CUSTOM_FIRSTHEAD_SPRITE(x) (x == 0xFD)
  27 #define IS_CUSTOM_SECONDHEAD_SPRITE(x) (x == 0xFE)
  28
  29 static const int VEHICLE_PROFIT_MIN_AGE = DAYS_IN_YEAR * 2; ///< Only vehicles older than this have a meaningful profit.
  30 static const Money VEHICLE_PROFIT_THRESHOLD = 10000;        ///< Threshold for a vehicle to be considered making good profit.
  31
  32 /**
  33  * Helper to check whether an image index is valid for a particular vehicle.
  34  * @param <T> The type of vehicle.
  35  * @param image_index The image index to check.
  36  * @return True iff the image index is valid.
  37  */
  38 template <VehicleType T>
  39 bool IsValidImageIndex(uint8 image_index);
  40
  41 typedef Vehicle *VehicleFromPosProc(Vehicle *v, void *data);
  42
  43 void VehicleServiceInDepot(Vehicle *v);
  44 uint CountVehiclesInChain(const Vehicle *v);
  45 void FindVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc);
  46 void FindVehicleOnPosXY(int x, int y, void *data, VehicleFromPosProc *proc);
  47 bool HasVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc);
  48 bool HasVehicleOnPosXY(int x, int y, void *data, VehicleFromPosProc *proc);
  49 void CallVehicleTicks();
  50 uint8 CalcPercentVehicleFilled(const Vehicle *v, StringID *colour);
  51
  52 void VehicleLengthChanged(const Vehicle *u);
  53
  54 byte VehicleRandomBits();
  55 void ResetVehicleHash();
  56 void ResetVehicleColourMap();
  57
  58 byte GetBestFittingSubType(Vehicle *v_from, Vehicle *v_for, CargoID dest_cargo_type);
  59
  60 void ViewportAddVehicles(DrawPixelInfo *dpi);
  61
  62 void ShowNewGrfVehicleError(EngineID engine, StringID part1, StringID part2, GRFBugs bug_type, bool critical);
  63 CommandCost TunnelBridgeIsFree(TileIndex tile, TileIndex endtile, const Vehicle *ignore = NULL);
  64
  65 void DecreaseVehicleValue(Vehicle *v);
  66 void CheckVehicleBreakdown(Vehicle *v);
  67 void AgeVehicle(Vehicle *v);
  68 void VehicleEnteredDepotThisTick(Vehicle *v);
  69
  70 UnitID GetFreeUnitNumber(VehicleType type);
  71
  72 void VehicleEnterDepot(Vehicle *v);
  73
  74 bool CanBuildVehicleInfrastructure(VehicleType type);
  75
  76 /** Position information of a vehicle after it moved */
  77 struct GetNewVehiclePosResult {
  78         int x, y;  ///< x and y position of the vehicle after moving
  79         TileIndex old_tile; ///< Current tile of the vehicle
  80         TileIndex new_tile; ///< Tile of the vehicle after moving
  81 };
  82
  83 GetNewVehiclePosResult GetNewVehiclePos(const Vehicle *v);
  84 Direction GetDirectionTowards(const Vehicle *v, int x, int y);
  85
  86 /**
  87  * Is the given vehicle type buildable by a company?
  88  * @param type Vehicle type being queried.
  89  * @return Vehicle type is buildable by a company.
  90  */
  91 static inline bool IsCompanyBuildableVehicleType(VehicleType type)
  92 {
  93         switch (type) {
  94                 case VEH_TRAIN:
  95                 case VEH_ROAD:
  96                 case VEH_SHIP:
  97                 case VEH_AIRCRAFT:
  98                         return true;
  99
 100                 default: return false;
 101         }
 102 }
 103
 104 /**
 105  * Is the given vehicle buildable by a company?
 106  * @param v Vehicle being queried.
 107  * @return Vehicle is buildable by a company.
 108  */
 109 static inline bool IsCompanyBuildableVehicleType(const BaseVehicle *v)
 110 {
 111         return IsCompanyBuildableVehicleType(v->type);
 112 }
 113
 114 LiveryScheme GetEngineLiveryScheme(EngineID engine_type, EngineID parent_engine_type, const Vehicle *v);
 115 const struct Livery *GetEngineLivery(EngineID engine_type, CompanyID company, EngineID parent_engine_type, const Vehicle *v, byte livery_setting);
 116
 117 SpriteID GetEnginePalette(EngineID engine_type, CompanyID company);
 118 SpriteID GetVehiclePalette(const Vehicle *v);
 119
 120 extern const uint32 _veh_build_proc_table[];
 121 extern const uint32 _veh_sell_proc_table[];
 122 extern const uint32 _veh_refit_proc_table[];
 123 extern const uint32 _send_to_depot_proc_table[];
 124
 125 /* Functions to find the right command for certain vehicle type */
 126 static inline uint32 GetCmdBuildVeh(VehicleType type)
 127 {
 128         return _veh_build_proc_table[type];
 129 }
 130
 131 static inline uint32 GetCmdBuildVeh(const BaseVehicle *v)
 132 {
 133         return GetCmdBuildVeh(v->type);
 134 }
 135
 136 static inline uint32 GetCmdSellVeh(VehicleType type)
 137 {
 138         return _veh_sell_proc_table[type];
 139 }
 140
 141 static inline uint32 GetCmdSellVeh(const BaseVehicle *v)
 142 {
 143         return GetCmdSellVeh(v->type);
 144 }
 145
 146 static inline uint32 GetCmdRefitVeh(VehicleType type)
 147 {
 148         return _veh_refit_proc_table[type];
 149 }
 150
 151 static inline uint32 GetCmdRefitVeh(const BaseVehicle *v)
 152 {
 153         return GetCmdRefitVeh(v->type);
 154 }
 155
 156 static inline uint32 GetCmdSendToDepot(VehicleType type)
 157 {
 158         return _send_to_depot_proc_table[type];
 159 }
 160
 161 static inline uint32 GetCmdSendToDepot(const BaseVehicle *v)
 162 {
 163         return GetCmdSendToDepot(v->type);
 164 }
 165
 166 CommandCost EnsureNoVehicleOnGround(TileIndex tile);
 167 CommandCost EnsureNoTrainOnTrackBits(TileIndex tile, TrackBits track_bits);
 168
 169 extern VehicleID _new_vehicle_id;
 170 extern uint16 _returned_refit_capacity;
 171 extern uint16 _returned_mail_refit_capacity;
 172
 173 bool CanVehicleUseStation(EngineID engine_type, const struct Station *st);
 174 bool CanVehicleUseStation(const Vehicle *v, const struct Station *st);
 175
 176 void ReleaseDisastersTargetingVehicle(VehicleID vehicle);
 177
 178 typedef SmallVector<VehicleID, 2> VehicleSet;
 179 void GetVehicleSet(VehicleSet &set, Vehicle *v, uint8 num_vehicles);
 180
 181 void CheckCargoCapacity(Vehicle *v);
 182
 183 #endif /* VEHICLE_FUNC_H */