1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
8 /** @file depot_func.h Functions related to depots. */
9 
10 #ifndef DEPOT_FUNC_H
11 #define DEPOT_FUNC_H
12 
13 #include "vehicle_type.h"
14 #include "slope_func.h"
15 
16 void ShowDepotWindow(TileIndex tile, VehicleType type);
17 
18 void DeleteDepotHighlightOfVehicle(const Vehicle *v);
19 
20 /**
21  * Find out if the slope of the tile is suitable to build a depot of given direction
22  * @param direction The direction in which the depot's exit points
23  * @param tileh The slope of the tile in question
24  * @return true if the construction is possible
25  */
CanBuildDepotByTileh(DiagDirection direction,Slope tileh)26 static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
27 {
28 	assert(tileh != SLOPE_FLAT);
29 	Slope entrance_corners = InclinedSlope(direction);
30 	/* For steep slopes both entrance corners must be raised (i.e. neither of them is the lowest corner),
31 	 * For non-steep slopes at least one corner must be raised. */
32 	return IsSteepSlope(tileh) ? (tileh & entrance_corners) == entrance_corners : (tileh & entrance_corners) != 0;
33 }
34 
35 #endif /* DEPOT_FUNC_H */
36