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/* $Id$ */

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#ifndef INDUSTRY_H

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#define INDUSTRY_H

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#include "pool.h"

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typedef byte IndustryGfx;

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typedef uint8 IndustryType;

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enum {

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	INVALID_INDUSTRY = 0xFFFF,

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};

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struct Industry {

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	TileIndex xy;

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	byte width; /* swapped order of w/h with town */

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	byte height;

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	const Town* town;

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	CargoID produced_cargo[2];

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	uint16 cargo_waiting[2];

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	byte production_rate[2];

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	CargoID accepts_cargo[3];

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	byte prod_level;

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	uint16 last_mo_production[2];

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	uint16 last_mo_transported[2];

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	byte pct_transported[2];

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	uint16 total_production[2];

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	uint16 total_transported[2];

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	uint16 counter;

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	byte type;

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	byte owner;

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	byte color_map;

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	Year last_prod_year;

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	byte was_cargo_delivered;

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	IndustryID index;

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};

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typedef struct IndustryTileTable {

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	TileIndexDiffC ti;

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	IndustryGfx gfx;

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} IndustryTileTable;

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typedef struct IndustrySpec {

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	/** Tables with the 'layout' of different composition of GFXes */

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	const IndustryTileTable *const *table;

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	/** Number of elements in the table */

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	byte num_table;

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	/** Base cost multiplier*/

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	byte cost_multiplier;

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	/** Industries this industry cannot be close to */

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	IndustryType conflicting[3];

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	/** index to a procedure to check for conflicting circumstances */

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	byte check_proc;

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	CargoID produced_cargo[2];

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	byte production_rate[2];

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	/** The minimum amount of cargo transported to the stations; if the

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	 * waiting cargo is less than this number, no cargo is moved to it*/

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	byte minimal_cargo;

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	CargoID accepts_cargo[3];

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	StringID closure_text;

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	StringID production_up_text;

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	StringID production_down_text;

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} IndustrySpec;

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const IndustrySpec *GetIndustrySpec(IndustryType thistype);

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extern MemoryPool _industry_pool;

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/**

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 * Check if an Industry really exists.

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 */

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static inline bool IsValidIndustry(const Industry *industry)

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{

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	return industry->xy != 0;

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}

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/**

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 * Get the pointer to the industry with index 'index'

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 */

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static inline Industry *GetIndustry(uint index)

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{

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	return (Industry*)GetItemFromPool(&_industry_pool, index);

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}

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/**

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 * Get the current size of the IndustryPool

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 */

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static inline uint16 GetIndustryPoolSize(void)

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{

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	return _industry_pool.total_items;

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}

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VARDEF int _total_industries;

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static inline IndustryID GetIndustryArraySize(void)

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{

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	/* TODO - This isn't the real content of the function, but

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	 *  with the new pool-system this will be replaced with one that

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	 *  _really_ returns the highest index + 1. Now it just returns

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	 *  the next safe value we are sure about everything is below.

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	 */

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	return _total_industries;

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}

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/**

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 * Return a random valid town.

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 */

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static inline Industry *GetRandomIndustry(void)

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{

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	uint num = RandomRange(GetIndustryArraySize());

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	uint index = 0;

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	if (GetIndustryArraySize() == 0) return NULL;

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	while (num > 0) {

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		num--;

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		index++;

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		/* Make sure we have a valid industry */

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		while (GetIndustry(index) == NULL) {

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			index++;

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			if (index == GetIndustryArraySize()) index = 0;

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		}

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	}

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	return GetIndustry(index);

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}

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void DestroyIndustry(Industry *i);

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static inline void DeleteIndustry(Industry *i)

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{

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	DestroyIndustry(i);

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	i->xy = 0;

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}

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

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#define FOR_ALL_INDUSTRIES(i) FOR_ALL_INDUSTRIES_FROM(i, 0)

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VARDEF const Industry** _industry_sort;

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VARDEF bool _industry_sort_dirty;

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void DeleteIndustry(Industry *is);

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void PlantRandomFarmField(const Industry *i);

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enum {

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	IT_COAL_MINE           =   0,

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	IT_POWER_STATION       =   1,

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	IT_SAWMILL             =   2,

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	IT_FOREST              =   3,

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	IT_OIL_REFINERY        =   4,

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	IT_OIL_RIG             =   5,

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	IT_FACTORY             =   6,

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	IT_PRINTING_WORKS      =   7,

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	IT_STEEL_MILL          =   8,

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	IT_FARM                =   9,

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	IT_COPPER_MINE         =  10,

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	IT_OIL_WELL            =  11,

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	IT_BANK_TEMP           =  12,

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	IT_FOOD_PROCESS        =  13,

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	IT_PAPER_MILL          =  14,

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	IT_GOLD_MINE           =  15,

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	IT_BANK_TROPIC_ARCTIC  =  16,

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	IT_DIAMOND_MINE        =  17,

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	IT_IRON_MINE           =  18,

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	IT_FRUIT_PLANTATION    =  19,

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	IT_RUBBER_PLANTATION   =  20,

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	IT_WATER_SUPPLY        =  21,

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	IT_WATER_TOWER         =  22,

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	IT_FACTORY_2           =  23,

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	IT_FARM_2              =  24,

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	IT_LUMBER_MILL         =  25,

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	IT_COTTON_CANDY        =  26,

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	IT_CANDY_FACTORY       =  27,

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	IT_BATTERY_FARM        =  28,

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	IT_COLA_WELLS          =  29,

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	IT_TOY_SHOP            =  30,

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	IT_TOY_FACTORY         =  31,

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	IT_PLASTIC_FOUNTAINS   =  32,

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	IT_FIZZY_DRINK_FACTORY =  33,

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	IT_BUBBLE_GENERATOR    =  34,

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	IT_TOFFEE_QUARRY       =  35,

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	IT_SUGAR_MINE          =  36,

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	IT_END,

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	IT_INVALID             = 255,

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};

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typedef enum IndustryLifeTypes {

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	INDUSTRYLIFE_NOT_CLOSABLE,     ///< Industry can never close

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	INDUSTRYLIFE_PRODUCTION,       ///< Industry can close and change of production

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	INDUSTRYLIFE_CLOSABLE,         ///< Industry can only close (no production change)

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} IndustryLifeType;

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#endif /* INDUSTRY_H */