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/* $Id$ */

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/** @file newgrf_town.cpp Implementation of the town part of NewGRF houses. */

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#include "stdafx.h"

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#include "openttd.h"

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#include "settings_type.h"

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#include "debug.h"

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#include "core/bitmath_func.hpp"

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#include "core/math_func.hpp"

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#include "town.h"

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/** This function implements the town variables that newGRF defines.

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 * @param variable that is queried

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 * @param parameter unused

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 * @param available will return false if ever the variable asked for does not exist

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 * @param t is of course the town we are inquiring

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 * @return the value stored in the corresponding variable*/

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uint32 TownGetVariable(byte variable, byte parameter, bool *available, const Town *t)

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{

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	switch (variable) {

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		/* Larger towns */

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		case 0x40:

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			if (_settings_game.economy.larger_towns == 0) return 2;

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			if (t->larger_town) return 1;

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			return 0;

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		/* Town index */

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		case 0x41: return t->index;

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		/* Town properties */

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		case 0x80: return t->xy;

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		case 0x81: return GB(t->xy, 8, 8);

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		case 0x82: return ClampToU16(t->population);

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		case 0x83: return GB(ClampToU16(t->population), 8, 8);

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		case 0x8A: return t->grow_counter;

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		case 0x92: return t->flags12;  // In original game, 0x92 and 0x93 are really one word. Since flags12 is a byte, this is to adjust

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		case 0x93: return 0;

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		case 0x94: return ClampToU16(t->squared_town_zone_radius[0]);

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		case 0x95: return GB(ClampToU16(t->squared_town_zone_radius[0]), 8, 8);

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		case 0x96: return ClampToU16(t->squared_town_zone_radius[1]);

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		case 0x97: return GB(ClampToU16(t->squared_town_zone_radius[1]), 8, 8);

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		case 0x98: return ClampToU16(t->squared_town_zone_radius[2]);

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		case 0x99: return GB(ClampToU16(t->squared_town_zone_radius[2]), 8, 8);

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		case 0x9A: return ClampToU16(t->squared_town_zone_radius[3]);

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		case 0x9B: return GB(ClampToU16(t->squared_town_zone_radius[3]), 8, 8);

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		case 0x9C: return ClampToU16(t->squared_town_zone_radius[4]);

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		case 0x9D: return GB(ClampToU16(t->squared_town_zone_radius[4]), 8, 8);

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		case 0x9E: return t->ratings[0];

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		case 0x9F: return GB(t->ratings[0], 8, 8);

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		case 0xA0: return t->ratings[1];

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		case 0xA1: return GB(t->ratings[1], 8, 8);

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		case 0xA2: return t->ratings[2];

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		case 0xA3: return GB(t->ratings[2], 8, 8);

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		case 0xA4: return t->ratings[3];

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		case 0xA5: return GB(t->ratings[3], 8, 8);

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		case 0xA6: return t->ratings[4];

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		case 0xA7: return GB(t->ratings[4], 8, 8);

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		case 0xA8: return t->ratings[5];

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		case 0xA9: return GB(t->ratings[5], 8, 8);

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		case 0xAA: return t->ratings[6];

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		case 0xAB: return GB(t->ratings[6], 8, 8);

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		case 0xAC: return t->ratings[7];

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		case 0xAD: return GB(t->ratings[7], 8, 8);

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		case 0xAE: return t->have_ratings;

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		case 0xB2: return t->statues;

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		case 0xB6: return ClampToU16(t->num_houses);

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		case 0xB9: return t->growth_rate;

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		case 0xBA: return ClampToU16(t->new_max_pass);

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		case 0xBB: return GB(ClampToU16(t->new_max_pass), 8, 8);

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		case 0xBC: return ClampToU16(t->new_max_mail);

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		case 0xBD: return GB(ClampToU16(t->new_max_mail), 8, 8);

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		case 0xBE: return ClampToU16(t->new_act_pass);

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		case 0xBF: return GB(ClampToU16(t->new_act_pass), 8, 8);

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		case 0xC0: return ClampToU16(t->new_act_mail);

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		case 0xC1: return GB(ClampToU16(t->new_act_mail), 8, 8);

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		case 0xC2: return ClampToU16(t->max_pass);

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		case 0xC3: return GB(ClampToU16(t->max_pass), 8, 8);

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		case 0xC4: return ClampToU16(t->max_mail);

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		case 0xC5: return GB(ClampToU16(t->max_mail), 8, 8);

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		case 0xC6: return ClampToU16(t->act_pass);

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		case 0xC7: return GB(ClampToU16(t->act_pass), 8, 8);

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		case 0xC8: return ClampToU16(t->act_mail);

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		case 0xC9: return GB(ClampToU16(t->act_mail), 8, 8);

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		case 0xCA: return t->pct_pass_transported;

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		case 0xCB: return t->pct_mail_transported;

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		case 0xCC: return t->new_act_food;

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		case 0xCD: return GB(t->new_act_food, 8, 8);

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		case 0xCE: return t->new_act_water;

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		case 0xCF: return GB(t->new_act_water, 8, 8);

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		case 0xD0: return t->act_food;

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		case 0xD1: return GB(t->act_food, 8, 8);

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		case 0xD2: return t->act_water;

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		case 0xD3: return GB(t->act_water, 8, 8);

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		case 0xD4: return t->road_build_months;

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		case 0xD5: return t->fund_buildings_months;

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	}

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	DEBUG(grf, 1, "Unhandled town property 0x%X", variable);

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	*available = false;

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	return (uint32)-1;

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}