author | peter1138 |
Sun, 03 Aug 2008 17:35:08 +0000 | |
changeset 9834 | 7474149531c1 |
parent 8962 | 1b263c69799d |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file depot_func.h Functions related to depots. */ |
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#ifndef DEPOT_FUNC_H |
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#define DEPOT_FUNC_H |
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#include "depot_type.h" |
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#include "tile_type.h" |
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#include "vehicle_type.h" |
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#include "direction_type.h" |
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#include "slope_type.h" |
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void ShowDepotWindow(TileIndex tile, VehicleType type); |
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void InitializeDepots(); |
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void DeleteDepotHighlightOfVehicle(const Vehicle *v); |
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/** |
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* Find out if the slope of the tile is suitable to build a depot of given direction |
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* @param direction The direction in which the depot's exit points |
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* @param tileh The slope of the tile in question |
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* @return true if the construction is possible |
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* This is checked by the ugly 0x4C >> direction magic, which does the following: |
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* 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out) |
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* So: for direction (only the significant bits are shown)<p> |
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* 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p> |
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* 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p> |
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* 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p> |
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* 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p> |
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* So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh |
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*/ |
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static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh) |
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{ |
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return ((0x4C >> direction) & tileh) != 0; |
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} |
876f20a0e843
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8962
1b263c69799d
(svn r12754) -Codechange: split depot.h into depot_map.h, depot_func.h and depot_base.h and remove quite a lot of unneeded (before this) includes of depot.h.
rubidium
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#endif /* DEPOT_FUNC_H */ |