Files @ r24860:fb2788d47d86
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Location: cpp/openttd-patchpack/source/src/depot_func.h

Michael Lutz
Codechange: [OSX] Only keep a total dirty rect for drawing.

When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.

All other drivers only keep one overall dirty rect, so do it here as well.
/*
 * 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 "vehicle_type.h"
#include "slope_func.h"

void ShowDepotWindow(TileIndex tile, VehicleType type);

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
 */
static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
{
	assert(tileh != SLOPE_FLAT);
	Slope entrance_corners = InclinedSlope(direction);
	/* For steep slopes both entrance corners must be raised (i.e. neither of them is the lowest corner),
	 * For non-steep slopes at least one corner must be raised. */
	return IsSteepSlope(tileh) ? (tileh & entrance_corners) == entrance_corners : (tileh & entrance_corners) != 0;
}

#endif /* DEPOT_FUNC_H */