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/* $Id$ */

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/** @file engine_type.h Types related to engines. */

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#ifndef ENGINE_TYPE_H

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#define ENGINE_TYPE_H

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#include "rail_type.h"

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#include "cargo_type.h"

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#include "vehicle_type.h"

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#include "gfx_type.h"

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#include "date_type.h"

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#include "sound_type.h"

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#include "player_type.h"

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#include "strings_type.h"

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typedef uint16 EngineID;

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typedef uint16 EngineRenewID;

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typedef EngineID *EngineList; ///< engine list type placeholder acceptable for C code (see helpers.cpp)

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enum RailVehicleTypes {

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	RAILVEH_SINGLEHEAD,  ///< indicates a "standalone" locomotive

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	RAILVEH_MULTIHEAD,   ///< indicates a combination of two locomotives

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	RAILVEH_WAGON,       ///< simple wagon, not motorized

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};

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enum EngineClass {

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	EC_STEAM,

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	EC_DIESEL,

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	EC_ELECTRIC,

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	EC_MONORAIL,

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	EC_MAGLEV,

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};

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struct RailVehicleInfo {

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	byte image_index;

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	RailVehicleTypes railveh_type;

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	byte base_cost;

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	RailTypeByte railtype;

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	uint16 max_speed;

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	uint16 power;

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	uint16 weight;

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	byte running_cost;

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	byte running_cost_class;

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	EngineClass engclass;           ///< Class of engine for this vehicle

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	byte capacity;

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	CargoID cargo_type;

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	byte ai_rank;

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	byte ai_passenger_only; ///< Bit value to tell AI that this engine is for passenger use only

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	uint16 pow_wag_power;

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	byte pow_wag_weight;

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	byte visual_effect; // NOTE: this is not 100% implemented yet, at the moment it is only used as a 'fallback' value

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	                    //       for when the 'powered wagon' callback fails. But it should really also determine what

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	                    //       kind of visual effect to generate for a vehicle (default, steam, diesel, electric).

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	                    //       Same goes for the callback result, which atm is only used to check if a wagon is powered.

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	byte shorten_factor;   ///< length on main map for this type is 8 - shorten_factor

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	byte tractive_effort;  ///< Tractive effort coefficient

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	byte user_def_data;    ///< Property 0x25: "User-defined bit mask" Used only for (very few) NewGRF vehicles

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};

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struct ShipVehicleInfo {

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	byte image_index;

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	byte base_cost;

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	uint16 max_speed;

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	CargoID cargo_type;

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	uint16 capacity;

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	byte running_cost;

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	SoundFxByte sfx;

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	bool refittable;

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};

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/* AircraftVehicleInfo subtypes, bitmask type.

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 * If bit 0 is 0 then it is a helicopter, otherwise it is a plane

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 * in which case bit 1 tells us whether it's a big(fast) plane or not */

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enum {

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	AIR_HELI = 0,

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	AIR_CTOL = 1, ///< Conventional Take Off and Landing, i.e. planes

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	AIR_FAST = 2,

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};

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struct AircraftVehicleInfo {

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	byte image_index;

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	byte base_cost;

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	byte running_cost;

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	byte subtype;

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	SoundFxByte sfx;

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	byte acceleration;

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	uint16 max_speed;

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	byte mail_capacity;

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	uint16 passenger_capacity;

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};

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struct RoadVehicleInfo {

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	byte image_index;

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	byte base_cost;

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	byte running_cost;

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	byte running_cost_class;

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	SoundFxByte sfx;

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	byte max_speed;

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	byte capacity;

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	CargoID cargo_type;

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};

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/** Information about a vehicle

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 *  @see table/engines.h

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 */

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struct EngineInfo {

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	Date base_intro;

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	Year lifelength;

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	Year base_life;

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	byte unk2;         ///< flag for carriage(bit 7) and decay speed(bits0..6)

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	byte load_amount;

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	byte climates;

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	uint32 refit_mask;

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	byte refit_cost;

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	byte misc_flags;

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	byte callbackmask;

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	int8 retire_early;  ///< Number of years early to retire vehicle

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	StringID string_id; ///< Default name of engine

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};

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struct Engine {

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	char *name;         ///< Custom name of engine

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	Date intro_date;

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	Date age;

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	uint16 reliability;

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	uint16 reliability_spd_dec;

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	uint16 reliability_start, reliability_max, reliability_final;

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	uint16 duration_phase_1, duration_phase_2, duration_phase_3;

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	byte lifelength;

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	byte flags;

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	uint8 preview_player_rank;

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	byte preview_wait;

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	byte player_avail;

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	VehicleType type; ///< type, ie VEH_ROAD, VEH_TRAIN, etc.

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};

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/**

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 * EngineInfo.misc_flags is a bitmask, with the following values

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 */

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enum {

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	EF_RAIL_TILTS = 0, ///< Rail vehicle tilts in curves

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	EF_ROAD_TRAM  = 0, ///< Road vehicle is a tram/light rail vehicle

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	EF_USES_2CC   = 1, ///< Vehicle uses two company colours

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	EF_RAIL_IS_MU = 2, ///< Rail vehicle is a multiple-unit (DMU/EMU)

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};

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/**

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 * Engine.flags is a bitmask, with the following values.

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 */

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enum {

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	ENGINE_AVAILABLE         = 1, ///< This vehicle is available to everyone.

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	ENGINE_EXCLUSIVE_PREVIEW = 2, ///< This vehicle is in the exclusive preview stage, either being used or being offered to a player.

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	ENGINE_OFFER_WINDOW_OPEN = 4, ///< The exclusive offer window is currently open for a player.

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};

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enum {

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	NUM_VEHICLE_TYPES = 6

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};

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static const EngineID INVALID_ENGINE = 0xFFFF;

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enum {

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	NUM_NORMAL_RAIL_ENGINES = 54,

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	NUM_MONORAIL_ENGINES    = 30,

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	NUM_MAGLEV_ENGINES      = 32,

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	NUM_TRAIN_ENGINES       = NUM_NORMAL_RAIL_ENGINES + NUM_MONORAIL_ENGINES + NUM_MAGLEV_ENGINES,

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	NUM_ROAD_ENGINES        = 88,

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	NUM_SHIP_ENGINES        = 11,

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	NUM_AIRCRAFT_ENGINES    = 41,

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	TOTAL_NUM_ENGINES       = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES + NUM_AIRCRAFT_ENGINES,

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	AIRCRAFT_ENGINES_INDEX  = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES + NUM_SHIP_ENGINES,

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	SHIP_ENGINES_INDEX      = NUM_TRAIN_ENGINES + NUM_ROAD_ENGINES,

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	ROAD_ENGINES_INDEX      = NUM_TRAIN_ENGINES,

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};

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#endif /* ENGINE_TYPE_H */