/* $Id$ */

#ifndef INDUSTRY_H
#define INDUSTRY_H

#include "pool.h"

typedef byte IndustryGfx;
typedef uint8 IndustryType;

struct Industry {
	TileIndex xy;
	byte width; /* swapped order of w/h with town */
	byte height;
	const Town* town;
	CargoID produced_cargo[2];
	uint16 cargo_waiting[2];
	byte production_rate[2];
	CargoID accepts_cargo[3];
	byte prod_level;
	uint16 last_mo_production[2];
	uint16 last_mo_transported[2];
	byte pct_transported[2];
	uint16 total_production[2];
	uint16 total_transported[2];
	uint16 counter;

	byte type;
	byte owner;
	byte color_map;
	byte last_prod_year;
	byte was_cargo_delivered;

	uint16 index;
};

typedef struct IndustryTileTable {
	TileIndexDiffC ti;
	IndustryGfx gfx;
} IndustryTileTable;

typedef struct IndustrySpec {
	/** Tables with the 'layout' of different composition of GFXes */
	const IndustryTileTable *const *table;
	/** Number of elements in the table */
	byte num_table;
	/** Base cost multiplier*/
	byte cost_multiplier;
	/** Industries this industry cannot be close to */
	IndustryType conflicting[3];
	/** index to a procedure to check for conflicting circumstances */
	byte check_proc;

	CargoID produced_cargo[2];
	byte production_rate[2];
	/** The minimum amount of cargo transported to the stations; if the
	 * waiting cargo is less than this number, no cargo is moved to it*/
	byte minimal_cargo;
	CargoID accepts_cargo[3];

	StringID closure_text;
	StringID production_up_text;
	StringID production_down_text;
} IndustrySpec;

const IndustrySpec *GetIndustrySpec(IndustryType thistype);

extern MemoryPool _industry_pool;

/**
 * Check if an Industry really exists.
 */
static inline bool IsValidIndustry(Industry* industry)
{
	return industry->xy != 0; /* XXX: Replace by INVALID_TILE someday */
}

/**
 * Get the pointer to the industry with index 'index'
 */
static inline Industry *GetIndustry(uint index)
{
	return (Industry*)GetItemFromPool(&_industry_pool, index);
}

/**
 * Get the current size of the IndustryPool
 */
static inline uint16 GetIndustryPoolSize(void)
{
	return _industry_pool.total_items;
}

#define FOR_ALL_INDUSTRIES_FROM(i, start) for (i = GetIndustry(start); i != NULL; i = (i->index + 1 < GetIndustryPoolSize()) ? GetIndustry(i->index + 1) : NULL)
#define FOR_ALL_INDUSTRIES(i) FOR_ALL_INDUSTRIES_FROM(i, 0)

VARDEF int _total_industries; // For the AI: the amount of industries active

VARDEF uint16 *_industry_sort;
VARDEF bool _industry_sort_dirty;


void DeleteIndustry(Industry *is);

enum {
	IT_COAL_MINE = 0,
	IT_POWER_STATION = 1,
	IT_SAWMILL = 2,
	IT_FOREST = 3,
	IT_OIL_REFINERY = 4,
	IT_OIL_RIG = 5,
	IT_FACTORY = 6,
	IT_PRINTING_WORKS = 7,
	IT_STEEL_MILL = 8,
	IT_FARM = 9,
	IT_COPPER_MINE = 10,
	IT_OIL_WELL = 11,
	IT_BANK_TEMP = 12,
	IT_FOOD_PROCESS = 13,
	IT_PAPER_MILL = 14,
	IT_GOLD_MINE = 15,
	IT_BANK_TROPIC_ARCTIC = 16,
	IT_DIAMOND_MINE = 17,
	IT_IRON_MINE = 18,
	IT_FRUIT_PLANTATION = 19,
	IT_RUBBER_PLANTATION = 20,
	IT_WATER_SUPPLY = 21,
	IT_WATER_TOWER = 22,
	IT_FACTORY_2 = 23,
	IT_FARM_2 = 24,
	IT_LUMBER_MILL = 25,
	IT_COTTON_CANDY = 26,
	IT_CANDY_FACTORY = 27,
	IT_BATTERY_FARM = 28,
	IT_COLA_WELLS = 29,
	IT_TOY_SHOP = 30,
	IT_TOY_FACTORY = 31,
	IT_PLASTIC_FOUNTAINS = 32,
	IT_FIZZY_DRINK_FACTORY = 33,
	IT_BUBBLE_GENERATOR = 34,
	IT_TOFFEE_QUARRY = 35,
	IT_SUGAR_MINE = 36,
	IT_END,
	IT_INVALID = 255,
};

typedef enum IndustryLifeTypes {
	INDUSTRYLIFE_NOT_CLOSABLE,     ///< Industry can never close
	INDUSTRYLIFE_PRODUCTION,       ///< Industry can close and change of production
	INDUSTRYLIFE_CLOSABLE,         ///< Industry can only close (no production change)
} IndustryLifeType;

#endif /* INDUSTRY_H */