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Location: cpp/openttd-patchpack/source/src/depot_func.h - annotation
r9880:ab5464c57091
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(svn r14028) -Fix(r14027): Wrong value for the multiline_skipping. Just the other way around.
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/** @file depot_func.h Functions related to depots. */
#ifndef DEPOT_FUNC_H
#define DEPOT_FUNC_H
#include "depot_type.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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