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#ifndef VARIABLES_H

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#define VARIABLES_H

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#include "player.h"

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//enum { DPARAM_SIZE = 32 };

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// ********* START OF SAVE REGION

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#if !defined(MAX_PATH)

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# define MAX_PATH 260

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#endif

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// Prices and also the fractional part.

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VARDEF Prices _price;

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VARDEF uint16 _price_frac[NUM_PRICES];

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VARDEF uint32 _cargo_payment_rates[NUM_CARGO];

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VARDEF uint16 _cargo_payment_rates_frac[NUM_CARGO];

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typedef struct {

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	GameDifficulty diff;

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	byte diff_level;

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	byte currency;

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	bool kilometers;

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	byte town_name;

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	byte landscape;

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	byte snow_line;

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	byte autosave;

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	byte road_side;

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} GameOptions;

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// These are the options for the current game

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VARDEF GameOptions _opt;

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// These are the options for the new game

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VARDEF GameOptions _new_opt;

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// Current date

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VARDEF uint16 _date;

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VARDEF uint16 _date_fract;

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// Amount of game ticks

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VARDEF uint16 _tick_counter;

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// Used when calling OnNewDay

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VARDEF VehicleID _vehicle_id_ctr_day;

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// Skip aging of cargo?

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VARDEF byte _age_cargo_skip_counter;

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// Available aircraft types

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VARDEF byte _avail_aircraft;

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// Position in tile loop

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VARDEF TileIndex _cur_tileloop_tile;

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// Also save scrollpos_x, scrollpos_y and zoom

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VARDEF uint16 _disaster_delay;

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// Determines what station to operate on in the

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//  tick handler.

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VARDEF uint16 _station_tick_ctr;

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VARDEF uint32 _random_seeds[2][2];

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VARDEF uint32 _player_seeds[MAX_PLAYERS][2];

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// Iterator through all towns in OnTick_Town

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VARDEF byte _cur_town_ctr;

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VARDEF uint _cur_player_tick_index;

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VARDEF uint _next_competitor_start;

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// Determines how often to run the tree loop

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VARDEF byte _trees_tick_ctr;

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// Keep track of current game position

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VARDEF int _saved_scrollpos_x;

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VARDEF int _saved_scrollpos_y;

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VARDEF byte _saved_scrollpos_zoom;

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// ********* END OF SAVE REGION

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typedef struct Patches {

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	bool modified_catchment;	//different-size catchment areas

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	bool vehicle_speed;			// show vehicle speed

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	bool build_on_slopes;		// allow building on slopes

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	bool mammoth_trains;		// allow very long trains

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	bool join_stations;			// allow joining of train stations

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	bool full_load_any;			// new full load calculation, any cargo must be full

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	bool improved_load;			// improved loading algorithm

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	byte station_spread;		// amount a station may spread

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	bool inflation;					// disable inflation

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	bool selectgoods;       // only send the goods to station if a train has been there

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	bool longbridges;				// allow 100 tile long bridges

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	bool gotodepot;					// allow goto depot in orders

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	bool build_rawmaterial_ind;	 // allow building raw material industries

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	bool multiple_industry_per_town;	// allow many industries of the same type per town

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	bool same_industry_close;	// allow same type industries to be built close to each other

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	uint16 lost_train_days;	// if a train doesn't switch order in this amount of days, a train is lost warning is shown

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	uint8 order_review_system;

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	bool train_income_warn; // if train is generating little income, show a warning

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	bool status_long_date;		// always show long date in status bar

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	bool signal_side;				// show signals on right side

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	bool show_finances;			// show finances at end of year

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	bool new_nonstop;				// ttdpatch compatible nonstop handling

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	bool roadveh_queue;			// buggy road vehicle queueing

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	bool autoscroll;				// scroll when moving mouse to the edge.

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	byte errmsg_duration;		// duration of error message

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	byte snow_line_height;	// a number 0-15 that configured snow line height

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	bool bribe;							// enable bribing the local authority

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	bool new_depot_finding;	// use new algorithm to find a depot.

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	bool nonuniform_stations;// allow nonuniform train stations

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	bool always_small_airport; // always allow small airports

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	bool realistic_acceleration; // realistic acceleration for trains

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	bool invisible_trees; // don't show trees when buildings are transparent

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	uint8 toolbar_pos;			// position of toolbars, 0=left, 1=center, 2=right

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	uint8 window_snap_radius; // Windows snap at each other if closer than this

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	byte max_trains;				//max trains in game per player (these are 8bit because the unitnumber field can't hold more)

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	byte max_roadveh;				//max trucks in game per player

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	byte max_aircraft;			//max planes in game per player

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	byte max_ships;					//max ships in game per player

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	bool servint_ispercent;	// service intervals are in percents

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	uint16 servint_trains;	// service interval for trains

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	uint16 servint_roadveh;	// service interval for road vehicles

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	uint16 servint_aircraft;// service interval for aircraft

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	uint16 servint_ships;		// service interval for ships

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	bool autorenew;

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	int16 autorenew_months;

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	int32 autorenew_money;

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	bool new_pathfinding;		// use optimized pathfinding algoritm for trains

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	byte pf_maxdepth;				// maximum recursion depth when searching for a train route for new pathfinder

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	uint16 pf_maxlength;		// maximum length when searching for a train route for new pathfinder

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	bool bridge_pillars;		// show bridge pillars for high bridges

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	bool ai_disable_veh_train;		// disable types for AI

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	bool ai_disable_veh_roadveh;		// disable types for AI

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	bool ai_disable_veh_aircraft;		// disable types for AI

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	bool ai_disable_veh_ship;		// disable types for AI

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	uint32 starting_date;		// starting date

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	uint32 colored_news_date; // when does newspaper become colored?

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	bool keep_all_autosave;		// name the autosave in a different way.

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	bool extra_dynamite;			// extra dynamite

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	bool never_expire_vehicles; // never expire vehicles

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	byte extend_vehicle_life;	// extend vehicle life by this many years

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	bool auto_euro;						// automatically switch to euro in 2002

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	bool serviceathelipad;	// service helicopters at helipads automatically (no need to send to depot)

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	bool smooth_economy;		// smooth economy

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	byte dist_local_authority;		// distance for town local authority, default 20

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	byte wait_oneway_signal;	//waitingtime in days before a oneway signal

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	byte wait_twoway_signal;	//waitingtime in days before a twoway signal

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	byte drag_signals_density; // many signals density

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	bool ainew_active;  // Is the new AI active?

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} Patches;

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VARDEF Patches _patches;

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typedef struct Cheat {

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	bool been_used;	// has this cheat been used before?

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	byte value;			// active?

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} Cheat;

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// WARNING! Do _not_ remove entries in Cheats struct or change the order

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// of the existing ones! Would break downward compatibility.

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// Only add new entries at the end of the struct!

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typedef struct Cheats {

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	Cheat magic_bulldozer;		// dynamite industries, unmovables

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	Cheat switch_player;			// change to another player

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	Cheat money;							// get rich

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	Cheat crossing_tunnels;		// allow tunnels that cross each other

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	Cheat build_in_pause;			// build while in pause mode

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	Cheat no_jetcrash;				// no jet will crash on small airports anymore

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	Cheat switch_climate;

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	Cheat change_date;				//changes date ingame

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} Cheats;

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VARDEF Cheats _cheats;

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typedef struct Paths {

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	char *personal_dir;  // includes cfg file and save folder

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	char *game_data_dir; // includes data, gm, lang

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	char *data_dir;

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	char *gm_dir;

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	char *lang_dir;

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	char *save_dir;

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	char *autosave_dir;

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	char *scenario_dir;

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	char *second_data_dir;

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} Paths;

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VARDEF Paths _path;

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// Which options struct does options modify?

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VARDEF GameOptions *_opt_mod_ptr;

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VARDEF GameOptions _opt_mod_temp;

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// NOSAVE: Used in palette animations only, not really important.

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VARDEF int _timer_counter;

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// NOSAVE: can be determined from _date

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VARDEF byte _cur_year;

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VARDEF byte _cur_month;

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// NOSAVE: can be determined from player structs

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VARDEF byte _player_colors[MAX_PLAYERS];

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VARDEF bool _in_state_game_loop;

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VARDEF uint32 _frame_counter;

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VARDEF bool _is_ai_player; // current player is an AI player? - Can be removed if new AI is done

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VARDEF bool _do_autosave;

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VARDEF int _autosave_ctr;

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VARDEF byte _local_player;

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VARDEF byte _display_opt;

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VARDEF byte _pause;

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VARDEF int _caret_timer;

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VARDEF uint16 _news_display_opt;

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VARDEF byte _game_mode;

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VARDEF StringID _error_message;

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VARDEF StringID _error_message_2;

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VARDEF int32 _additional_cash_required;

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VARDEF uint32 _decode_parameters[20];

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VARDEF byte _current_player;

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VARDEF int _docommand_recursive;

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VARDEF uint32 _pressed_key; // Low 8 bits = ASCII, High 16 bits = keycode

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VARDEF bool _ctrl_pressed;  // Is Ctrl pressed?

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VARDEF bool _shift_pressed;  // Is Alt pressed?

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VARDEF byte _dirkeys;				// 1=left, 2=up, 4=right, 8=down

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VARDEF bool _fullscreen;

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VARDEF bool _double_size;

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VARDEF uint _display_hz;

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VARDEF bool _force_full_redraw;

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VARDEF uint _fullscreen_bpp;

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VARDEF bool _fast_forward;

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VARDEF bool _rightclick_emulate;

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// IN/OUT parameters to commands

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VARDEF byte _yearly_expenses_type;

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VARDEF TileIndex _terraform_err_tile;

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VARDEF uint _build_tunnel_endtile;

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VARDEF bool _generating_world;

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VARDEF int _new_town_size;

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VARDEF uint _returned_refit_amount;

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// Deals with the type of the savegame, independent of extension

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typedef struct {

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	int mode;						// savegame/scenario type (old, new)

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	byte name[MAX_PATH];	// name

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} SmallFiosItem;

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// Used when switching from the intro menu.

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VARDEF byte _switch_mode;

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VARDEF StringID _switch_mode_errorstr;

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VARDEF bool _exit_game;

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VARDEF SmallFiosItem _file_to_saveload;

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VARDEF byte _make_screenshot;

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VARDEF byte _get_z_hint; // used as a hint to getslopez to return the right height at a bridge.

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VARDEF char *_newgrf_files[32];

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VARDEF Vehicle *_place_clicked_vehicle;

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VARDEF char _ini_videodriver[16], _ini_musicdriver[16], _ini_sounddriver[16];

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VARDEF bool _cache_sprites;

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// debug features

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VARDEF char _savedump_path[64];

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VARDEF uint _savedump_first, _savedump_freq, _savedump_last;

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// end of debug features

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typedef struct {

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	char *name;

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	char *file;

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} DynLangEnt;

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// Used for dynamic language support

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typedef struct {

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	int num; // number of languages

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	int curr; // currently selected language index

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	char curr_file[32]; // currently selected language file

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	StringID dropdown[32 + 1]; // used in settings dialog

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	DynLangEnt ent[32];

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} DynamicLanguages;

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VARDEF DynamicLanguages _dynlang;

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VARDEF int _num_resolutions;

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VARDEF uint16 _resolutions[32][2];

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VARDEF uint16 _cur_resolution[2];

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VARDEF char _screenshot_format_name[8];

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VARDEF int _num_screenshot_formats, _cur_screenshot_format;

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VARDEF char _savegame_format[8];

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VARDEF char *_config_file;

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// NOSAVE: These can be recalculated from InitializeLandscapeVariables

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typedef struct {

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	StringID names_s[NUM_CARGO];

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	StringID names_p[NUM_CARGO];

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	StringID names_long_s[NUM_CARGO];

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	StringID names_long_p[NUM_CARGO];

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	StringID names_short[NUM_CARGO];

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	byte weights[NUM_CARGO];

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	SpriteID sprites[NUM_CARGO];

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	byte transit_days_1[NUM_CARGO];

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	byte transit_days_2[NUM_CARGO];

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	byte ai_railwagon[3][NUM_CARGO];

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	byte ai_roadveh_start[NUM_CARGO];

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	byte ai_roadveh_count[NUM_CARGO];

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} CargoConst;

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VARDEF CargoConst _cargoc;

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typedef byte TownNameGenerator(byte *buf, uint32 seed);

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extern TownNameGenerator * const _town_name_generators[];

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static inline void SetDParamX(uint32 *s, uint n, uint32 v)

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{

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	s[n] = v;

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}

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static inline uint32 GetDParamX(const uint32 *s, uint n)

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{

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	return s[n];

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}

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static inline void SetDParam(uint n, uint32 v)

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{

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	assert(n < lengthof(_decode_parameters));

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	_decode_parameters[n] = v;

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}

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static inline void SetDParam64(uint n, uint64 v)

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{

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	assert(n + 1 < lengthof(_decode_parameters));

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	_decode_parameters[n + 0] = v & 0xffffffff;

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	_decode_parameters[n + 1] = v >> 32;

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}

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static inline uint32 GetDParam(uint n)

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{

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	assert(n < lengthof(_decode_parameters));

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	return _decode_parameters[n];

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}

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#define COPY_IN_DPARAM(offs,src,num) memcpy(_decode_parameters + offs, src, sizeof(uint32) * (num))

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#define COPY_OUT_DPARAM(dst,offs,num) memcpy(dst,_decode_parameters + offs, sizeof(uint32) * (num))

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#define INJECT_DPARAM(n) InjectDparam(n);

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#define SET_EXPENSES_TYPE(x) if (x) _yearly_expenses_type=x;

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/* landscape.c */

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extern const byte _tileh_to_sprite[32];

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extern byte _map_type_and_height[TILES_X * TILES_Y];

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extern byte _map5[TILES_X * TILES_Y];

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extern byte _map3_lo[TILES_X * TILES_Y];

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extern byte _map3_hi[TILES_X * TILES_Y];

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extern byte _map_owner[TILES_X * TILES_Y];

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extern byte _map2[TILES_X * TILES_Y];

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extern byte _map_extra_bits[TILES_X * TILES_Y/4];

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static const byte _inclined_tileh[] = {

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	3,9,3,6,12,6,12,9,

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};

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extern const TileTypeProcs * const _tile_type_procs[16];

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/* station_cmd.c */

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// there are 5 types of airport (Country (3x4) , City(6x6), Metropolitan(6x6), International(7x7), Heliport(1x1)

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// will become obsolete once airports are loaded from seperate file

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extern const byte _airport_size_x[5];

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extern const byte _airport_size_y[5];

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extern const TileIndexDiff _tileoffs_by_dir[4];

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/* misc */

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VARDEF byte str_buffr[512];

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VARDEF char _screenshot_name[128];

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#define USERSTRING_LEN 128

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VARDEF char _userstring[USERSTRING_LEN];

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VARDEF byte _vehicle_design_names;

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VARDEF SignStruct _sign_list[40];

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VARDEF SignStruct *_new_sign_struct;

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/* tunnelbridge */

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#define MAX_BRIDGES 13

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/* Debugging levels */

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VARDEF int _debug_spritecache_level;

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VARDEF int _debug_misc_level;

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VARDEF int _debug_grf_level;

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VARDEF int _debug_ai_level;

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VARDEF int _debug_net_level;

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void CDECL debug(const char *s, ...);

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#ifdef NO_DEBUG_MESSAGES

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	#define DEBUG(name, level)

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#else

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	#define DEBUG(name, level) if (level == 0 || _debug_ ## name ## _level >= level) debug

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#endif

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#endif /* VARIABLES_H */