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Location: cpp/openttd-patchpack/source/src/depot_func.h - annotation
r14895:fb237f7e7f5b
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(svn r19502) -Codechange: During NewGRF loading, store rail type labels in temporary data and process after loading has finished. This avoids deactivated rail vehicles being reactivated if the climate property is set after the rail type property.
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/*
* 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_func.h Functions related to depots. */
#ifndef DEPOT_FUNC_H
#define DEPOT_FUNC_H
#include "tile_type.h"
#include "vehicle_type.h"
#include "direction_type.h"
#include "slope_type.h"
void ShowDepotWindow(TileIndex tile, VehicleType type);
void InitializeDepots();
void DeleteDepotHighlightOfVehicle(const Vehicle *v);
/**
* Find out if the slope of the tile is suitable to build a depot of given direction
* @param direction The direction in which the depot's exit points
* @param tileh The slope of the tile in question
* @return true if the construction is possible
* This is checked by the ugly 0x4C >> direction magic, which does the following:
* 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
* So: for direction (only the significant bits are shown)<p>
* 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
* 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
* 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
* 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
* So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh
*/
static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
{
return ((0x4C >> direction) & tileh) != 0;
}
#endif /* DEPOT_FUNC_H */
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