/* $Id$ */

/*

 * This file is part of OpenTTD.

 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.

 */

/** @file newgrf_industries.cpp Handling of NewGRF industries. */

#include "stdafx.h"

#include "debug.h"

#include "tile_type.h"

#include "strings_type.h"

#include "company_type.h"

#include "newgrf.h"

#include "newgrf_industries.h"

#include "newgrf_commons.h"

#include "newgrf_text.h"

#include "newgrf_town.h"

#include "window_func.h"

#include "town.h"

#include "company_base.h"

#include "command_func.h"

#include "gui.h"

#include "strings_func.h"

#include "table/strings.h"

static uint32 _industry_creation_random_bits;

/* Since the industry IDs defined by the GRF file don't necessarily correlate

 * to those used by the game, the IDs used for overriding old industries must be

 * translated when the idustry spec is set. */

IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);

IndustryTileOverrideManager _industile_mngr(NEW_INDUSTRYTILEOFFSET, NUM_INDUSTRYTILES, INVALID_INDUSTRYTILE);

IndustryType MapNewGRFIndustryType(IndustryType grf_type, uint32 grf_id)

{

	if (grf_type == IT_INVALID) return IT_INVALID;

	if (!HasBit(grf_type, 7)) return GB(grf_type, 0, 6);

	return _industry_mngr.GetID(GB(grf_type, 0, 6), grf_id);

}

/** Make an analysis of a tile and check for its belonging to the same

 * industry, and/or the same grf file

 * @param tile TileIndex of the tile to query

 * @param i Industry to which to compare the tile to

 * @return value encoded as per NFO specs */

uint32 GetIndustryIDAtOffset(TileIndex tile, const Industry *i)

{

	if (!IsTileType(tile, MP_INDUSTRY) || GetIndustryIndex(tile) != i->index) {

		/* No industry and/or the tile does not have the same industry as the one we match it with */

		return 0xFFFF;

	}

	IndustryGfx gfx = GetCleanIndustryGfx(tile);

	const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);

	const IndustrySpec *indold = GetIndustrySpec(i->type);

	if (gfx < NEW_INDUSTRYOFFSET) { // Does it belongs to an old type?

		/* It is an old tile.  We have to see if it's been overriden */

	switch (variable) {

		case 0x40:

		case 0x41:

		case 0x42: { // waiting cargo, but only if those two callback flags are set

			uint16 callback = indspec->callback_flags;

			if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {

				if ((indspec->behaviour & INDUSTRYBEH_PROD_MULTI_HNDLING) != 0) {

					return min(industry->incoming_cargo_waiting[variable - 0x40] / industry->prod_level, (uint16)0xFFFF);

				} else {

					return min(industry->incoming_cargo_waiting[variable - 0x40], (uint16)0xFFFF);

				}

			} else {

				return 0;

			}

		}

		/* Manhattan distance of closes dry/water tile */

		case 0x43: return GetClosestWaterDistance(tile, (indspec->behaviour & INDUSTRYBEH_BUILT_ONWATER) == 0);

		/* Layout number */

		case 0x44: return industry->selected_layout;

		/* Company info */

		case 0x45: {

			byte colours;

			bool is_ai = false;

			const Company *c = Company::GetIfValid(industry->founder);

			if (c != NULL) {

				const Livery *l = &c->livery[LS_DEFAULT];

				is_ai = c->is_ai;

				colours = l->colour1 + l->colour2 * 16;

			} else {

				colours = GB(Random(), 0, 8);

			}

			return industry->founder | (is_ai ? 0x10000 : 0) | (colours << 24);

		}

		case 0x46: return industry->construction_date; // Date when built - long format - (in days)

		/* Get industry ID at offset param */

		case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->xy), industry);

		/* Get random tile bits at offset param */

		case 0x61:

			tile = GetNearbyTile(parameter, tile);

		/* Land info of nearby tiles */

		case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY);

		/* Animation stage of nearby tiles */

		case 0x63:

			tile = GetNearbyTile(parameter, tile);

				return GetIndustryAnimationState(tile);

			}

			return 0xFFFFFFFF;

		/* Distance of nearest industry of given type */

		case 0x64: return GetClosestIndustry(tile, MapNewGRFIndustryType(parameter, indspec->grf_prop.grffile->grfid), industry);

		/* Get town zone and Manhattan distance of closest town */

		case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);

		/* Get square of Euclidian distance of closes town */

		case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);

		/* Count of industry, distance of closest instance

		 * 68 is the same as 67, but with a filtering on selected layout */

		case 0x67:

		case 0x68: return GetCountAndDistanceOfClosestInstance(parameter, variable == 0x68 ? GB(GetRegister(0x101), 0, 8) : 0, industry);

		/* Get a variable from the persistent storage */

		case 0x7C: return industry->psa.Get(parameter);

		/* Industry structure access*/

		case 0x80: return industry->xy;

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

		/* Pointer to the town the industry is associated with */

		case 0x82: return industry->town->index;

		case 0x83:

		case 0x84:

		case 0x85: DEBUG(grf, 0, "NewGRFs shouldn't be doing pointer magic"); break; // not supported

		case 0x86: return industry->width;

		case 0x87: return industry->height;// xy dimensions

		case 0x88:

		case 0x89: return industry->produced_cargo[variable - 0x88];

		case 0x8A: return industry->produced_cargo_waiting[0];

		case 0x8B: return GB(industry->produced_cargo_waiting[0], 8, 8);

		case 0x8C: return industry->produced_cargo_waiting[1];

		case 0x8D: return GB(industry->produced_cargo_waiting[1], 8, 8);

		case 0x8E:

		case 0x8F: return industry->production_rate[variable - 0x8E];

		case 0x90:

		case 0x91:

		case 0x92: return industry->accepts_cargo[variable - 0x90];

		case 0x93: return industry->prod_level;

		/* amount of cargo produced so far THIS month. */

		case 0x94: return industry->this_month_production[0];

		case 0x95: return GB(industry->this_month_production[0], 8, 8);

		case 0x96: return industry->this_month_production[1];

		case 0x97: return GB(industry->this_month_production[1], 8, 8);

		/* amount of cargo transported so far THIS month. */