Changeset - r12990:c3b80f9ad9d5
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master
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rubidium - 15 years ago 2009-09-10 14:36:38
rubidium@openttd.org
(svn r17494) -Codechange: improve algorithmic complexitiy of Depot::GetByTile from O(n) to O(1)
2 files changed with 5 insertions and 25 deletions:
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src/depot.cpp
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/* $Id$ */
 

	
 
/*
 
 * 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 depot.cpp Handling of depots. */
 

	
 
#include "stdafx.h"
 
#include "depot_base.h"
 
#include "company_type.h"
 
#include "order_func.h"
 
#include "window_func.h"
 
#include "core/bitmath_func.hpp"
 
#include "tile_map.h"
 
#include "water_map.h"
 
#include "core/pool_func.hpp"
 
#include "vehicle_gui.h"
 

	
 
DepotPool _depot_pool("Depot");
 
INSTANTIATE_POOL_METHODS(Depot)
 

	
 
/**
 
 * Gets a depot from a tile
 
 * @param tile tile with depot
 
 * @return Returns the depot if the tile had a depot, else it returns NULL
 
 */
 
/* static */ Depot *Depot::GetByTile(TileIndex tile)
 
{
 
	/* A ship depot is multiple tiles. The north most tile is
 
	 * always the ->xy tile, so make sure we always look for
 
	 * the nothern tile and not the southern one. */
 
	if (IsShipDepotTile(tile)) {
 
		tile = min(tile, GetOtherShipDepotTile(tile));
 
	}
 

	
 
	Depot *depot;
 

	
 
	FOR_ALL_DEPOTS(depot) {
 
		if (depot->xy == tile) return depot;
 
	}
 

	
 
	return NULL;
 
}
 

	
 
/**
 
 * Clean up a depot
 
 */
 
Depot::~Depot()
 
{
 
	if (CleaningPool()) return;
 

	
 
	/* Clear the depot from all order-lists */
 
	RemoveOrderFromAllVehicles(OT_GOTO_DEPOT, this->index);
 

	
 
	/* Delete the depot-window */
 
	DeleteWindowById(WC_VEHICLE_DEPOT, this->xy);
 

	
 
	/* Delete the depot list */
 
	WindowNumber wno = (this->index << 16) | VLW_DEPOT_LIST | GetTileOwner(this->xy);
 
	switch (GetTileType(this->xy)) {
 
		default: break; // It can happen there is no depot here anymore (TTO/TTD savegames)
 
		case MP_RAILWAY: DeleteWindowById(WC_TRAINS_LIST,  wno | (VEH_TRAIN << 11)); break;
 
		case MP_ROAD:    DeleteWindowById(WC_ROADVEH_LIST, wno | (VEH_ROAD  << 11)); break;
 
		case MP_WATER:   DeleteWindowById(WC_SHIPS_LIST,   wno | (VEH_SHIP  << 11)); break;
 
	}
 
}
 

	
 
void InitializeDepots()
 
{
 
	_depot_pool.CleanPool();
 
}
src/depot_base.h
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/* $Id$ */
 

	
 
/*
 
 * 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 depot_base.h Base for all depots (except hangars) */
 

	
 
#ifndef DEPOT_BASE_H
 
#define DEPOT_BASE_H
 

	
 
#include "tile_type.h"
 
#include "depot_type.h"
 
#include "depot_map.h"
 
#include "core/pool_type.hpp"
 
#include "town_type.h"
 

	
 
typedef Pool<Depot, DepotID, 64, 64000> DepotPool;
 
extern DepotPool _depot_pool;
 

	
 
struct Depot : DepotPool::PoolItem<&_depot_pool> {
 
	TileIndex xy;
 
	TownID town_index;
 

	
 
	Depot(TileIndex xy = INVALID_TILE) : xy(xy) {}
 
	~Depot();
 

	
 
	static Depot *GetByTile(TileIndex tile);
 
	static FORCEINLINE Depot *GetByTile(TileIndex tile)
 
	{
 
		return Depot::Get(GetDepotIndex(tile));
 
	}
 
};
 

	
 
#define FOR_ALL_DEPOTS_FROM(var, start) FOR_ALL_ITEMS_FROM(Depot, depot_index, var, start)
 
#define FOR_ALL_DEPOTS(var) FOR_ALL_DEPOTS_FROM(var, 0)
 

	
 
#endif /* DEPOT_BASE_H */
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