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#ifndef COMMAND_H

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#define COMMAND_H

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enum {

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	CMD_BUILD_RAILROAD_TRACK = 0,

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	CMD_REMOVE_RAILROAD_TRACK = 1,

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	CMD_BUILD_SINGLE_RAIL = 2,

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	CMD_REMOVE_SINGLE_RAIL = 3,

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	CMD_LANDSCAPE_CLEAR = 4,

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	CMD_BUILD_BRIDGE = 5,

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	CMD_BUILD_RAILROAD_STATION = 6,

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	CMD_BUILD_TRAIN_DEPOT = 7,

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	CMD_BUILD_SIGNALS = 8,

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	CMD_REMOVE_SIGNALS = 9,

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	CMD_TERRAFORM_LAND = 10,

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	CMD_PURCHASE_LAND_AREA = 11,

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	CMD_SELL_LAND_AREA = 12,

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	CMD_BUILD_TUNNEL = 13,

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	CMD_REMOVE_FROM_RAILROAD_STATION = 14,

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	CMD_CONVERT_RAIL = 15,

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	CMD_BUILD_TRAIN_WAYPOINT = 16,

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	CMD_RENAME_WAYPOINT = 17,

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	CMD_REMOVE_TRAIN_WAYPOINT = 18,

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	CMD_BUILD_ROAD_STOP = 21,

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	CMD_BUILD_LONG_ROAD = 23,

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	CMD_REMOVE_LONG_ROAD = 24,

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	CMD_BUILD_ROAD = 25,

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	CMD_REMOVE_ROAD = 26,

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	CMD_BUILD_ROAD_DEPOT = 27,

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	CMD_BUILD_AIRPORT = 29,

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	CMD_BUILD_DOCK = 30,

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	CMD_BUILD_SHIP_DEPOT = 31,

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	CMD_BUILD_BUOY = 32,

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	CMD_PLANT_TREE = 33,

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	CMD_BUILD_RAIL_VEHICLE = 34,

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	CMD_MOVE_RAIL_VEHICLE = 35,

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	CMD_START_STOP_TRAIN = 36,

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	CMD_SELL_RAIL_WAGON = 38,

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	CMD_TRAIN_GOTO_DEPOT = 39,

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	CMD_FORCE_TRAIN_PROCEED = 40,

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	CMD_REVERSE_TRAIN_DIRECTION = 41,

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	CMD_MODIFY_ORDER = 42,

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	CMD_SKIP_ORDER = 43,

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	CMD_DELETE_ORDER = 44,

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	CMD_INSERT_ORDER = 45,

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	CMD_CHANGE_TRAIN_SERVICE_INT = 46,

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	CMD_BUILD_INDUSTRY = 47,

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	CMD_BUILD_COMPANY_HQ = 48,

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	CMD_SET_PLAYER_FACE = 49,

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	CMD_SET_PLAYER_COLOR = 50,

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	CMD_INCREASE_LOAN = 51,

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	CMD_DECREASE_LOAN = 52,

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	CMD_WANT_ENGINE_PREVIEW = 53,

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	CMD_NAME_VEHICLE = 54,

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	CMD_RENAME_ENGINE = 55,

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	CMD_CHANGE_COMPANY_NAME = 56,

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	CMD_CHANGE_PRESIDENT_NAME = 57,

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	CMD_RENAME_STATION = 58,

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	CMD_SELL_AIRCRAFT = 59,

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	CMD_START_STOP_AIRCRAFT = 60,

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	CMD_BUILD_AIRCRAFT = 61,

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	CMD_SEND_AIRCRAFT_TO_HANGAR = 62,

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	CMD_CHANGE_AIRCRAFT_SERVICE_INT = 63,

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	CMD_REFIT_AIRCRAFT = 64,

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	CMD_PLACE_SIGN = 65,

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	CMD_RENAME_SIGN = 66,

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	CMD_BUILD_ROAD_VEH = 67,

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	CMD_START_STOP_ROADVEH = 68,

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	CMD_SELL_ROAD_VEH = 69,

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	CMD_SEND_ROADVEH_TO_DEPOT = 70,

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	CMD_TURN_ROADVEH = 71,

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	CMD_CHANGE_ROADVEH_SERVICE_INT = 72,

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	CMD_PAUSE = 73,

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	CMD_BUY_SHARE_IN_COMPANY = 74,

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	CMD_SELL_SHARE_IN_COMPANY = 75,

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	CMD_BUY_COMPANY = 76,

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	CMD_BUILD_TOWN = 77,

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	CMD_RENAME_TOWN = 80,

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	CMD_DO_TOWN_ACTION = 81,

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	CMD_SET_ROAD_DRIVE_SIDE = 82,

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	CMD_CHANGE_DIFFICULTY_LEVEL = 85,

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	CMD_START_STOP_SHIP = 86,

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	CMD_SELL_SHIP = 87,

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	CMD_BUILD_SHIP = 88,

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	CMD_SEND_SHIP_TO_DEPOT = 89,

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	CMD_CHANGE_SHIP_SERVICE_INT = 90,

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	CMD_REFIT_SHIP = 91,

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	CMD_CLONE_ORDER = 99,

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	CMD_CLEAR_AREA = 100,

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	CMD_MONEY_CHEAT = 102,

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	CMD_BUILD_CANAL = 103,

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	CMD_PLAYER_CTRL = 104, // used in multiplayer to create a new player etc.

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	CMD_LEVEL_LAND = 105,	// level land

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	CMD_REFIT_RAIL_VEHICLE = 106,

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	CMD_RESTORE_ORDER_INDEX = 107,

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	CMD_BUILD_LOCK = 108,

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	CMD_BUILD_SIGNAL_TRACK  = 110,

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	CMD_REMOVE_SIGNAL_TRACK = 111,

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	CMD_GIVE_MONEY = 113,

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	CMD_CHANGE_PATCH_SETTING = 114,

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	CMD_REPLACE_VEHICLE = 115,

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};

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enum {

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	DC_EXEC = 1,

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	DC_AUTO = 2,								// don't allow building on structures

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	DC_QUERY_COST = 4,					// query cost only, don't build.

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	DC_NO_WATER = 8,						// don't allow building on water

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	DC_NO_RAIL_OVERLAP = 0x10,	// don't allow overlap of rails (used in buildrail)

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	DC_AI_BUILDING = 0x20,			// special building rules for AI

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	DC_NO_TOWN_RATING = 0x40,		// town rating does not disallow you from building

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	DC_FORCETEST = 0x80,				// force test too.

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	CMD_ERROR = ((int32)0x80000000),

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};

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#define CMD_MSG(x) ((x)<<16)

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enum {

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	CMD_AUTO = 0x200,

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	CMD_NO_WATER = 0x400,

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	CMD_NETWORK_COMMAND = 0x800,		// execute the command without sending it on the network

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	CMD_NO_TEST_IF_IN_NETWORK = 0x1000, // When enabled, the command will bypass the no-DC_EXEC round if in network

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	CMD_SHOW_NO_ERROR = 0x2000,

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};

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//#define return_cmd_error(errcode) do { _error_message=(errcode); return CMD_ERROR; } while(0)

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#define return_cmd_error(errcode) do { return CMD_ERROR | (errcode); } while (0)

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/**

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 * Check the return value of a DoCommand*() function

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 * @param res the resulting value from the command to be checked

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 * @return Return true if the command failed, false otherwise

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 */

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static inline bool CmdFailed(int32 res)

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{

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	// lower 16bits are the StringID of the possible error

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	return res <= (CMD_ERROR | INVALID_STRING_ID);

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}

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/* command.c */

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int32 DoCommand(int x, int y, uint32 p1, uint32 p2, uint32 flags, uint procc);

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int32 DoCommandByTile(TileIndex tile, uint32 p1, uint32 p2, uint32 flags, uint procc);

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bool IsValidCommand(uint cmd);

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int32 GetAvailableMoneyForCommand(void);

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/* Validate functions for rail building */

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static inline bool ValParamRailtype(uint32 rail) { return rail <= GetPlayer(_current_player)->max_railtype;}

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#endif /* COMMAND_H */