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annotate src/depot.h @ 8284:dbb7bfe0e95c draft

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(svn r11848) -Codechange: New class-based drop down list functionality. Lists are now dynamically generated, and can include parameters, or be extended however needed.
author peter1138 <peter1138@openttd.org>
date Mon, 14 Jan 2008 16:10:58 +0000
parents 165064de4629
children 992fa65afba1
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1 /* $Id$ */
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2
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3 /** @file depot.h Header files for depots (not hangars) */
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4
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5 #ifndef DEPOT_H
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6 #define DEPOT_H
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7
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8 #include "direction_type.h"
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9 #include "oldpool.h"
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10 #include "road_map.h"
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11 #include "rail_map.h"
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12 #include "water_map.h"
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13 #include "station_map.h"
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15 struct Depot;
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16 DECLARE_OLD_POOL(Depot, Depot, 3, 8000)
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18 struct Depot : PoolItem<Depot, DepotID, &_Depot_pool> {
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19 TileIndex xy;
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20 TownID town_index;
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22 Depot(TileIndex xy = 0) : xy(xy) {}
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23 ~Depot();
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24
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25 inline bool IsValid() const { return this->xy != 0; }
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26 };
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27
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28 static inline bool IsValidDepotID(DepotID index)
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29 {
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30 return index < GetDepotPoolSize() && GetDepot(index)->IsValid();
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31 }
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32
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33 void ShowDepotWindow(TileIndex tile, VehicleType type);
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35 #define FOR_ALL_DEPOTS_FROM(d, start) for (d = GetDepot(start); d != NULL; d = (d->index + 1U < GetDepotPoolSize()) ? GetDepot(d->index + 1U) : NULL) if (d->IsValid())
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36 #define FOR_ALL_DEPOTS(d) FOR_ALL_DEPOTS_FROM(d, 0)
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37
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38 /**
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39 * Check if a tile is a depot of the given type.
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40 */
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41 static inline bool IsTileDepotType(TileIndex tile, TransportType type)
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42 {
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43 switch (type) {
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44 case TRANSPORT_RAIL:
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45 return IsTileType(tile, MP_RAILWAY) && GetRailTileType(tile) == RAIL_TILE_DEPOT;
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46
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47 case TRANSPORT_ROAD:
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48 return IsTileType(tile, MP_ROAD) && GetRoadTileType(tile) == ROAD_TILE_DEPOT;
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49
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50 case TRANSPORT_WATER:
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51 return IsTileType(tile, MP_WATER) && GetWaterTileType(tile) == WATER_TILE_DEPOT;
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52
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53 default:
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54 NOT_REACHED();
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55 return false;
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56 }
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57 }
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58
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59 /**
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60 * Is the given tile a tile with a depot on it?
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61 * @param tile the tile to check
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62 * @return true if and only if there is a depot on the tile.
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63 */
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64 static inline bool IsDepotTile(TileIndex tile)
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65 {
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66 switch (GetTileType(tile)) {
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67 case MP_ROAD: return GetRoadTileType(tile) == ROAD_TILE_DEPOT;
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68 case MP_WATER: return GetWaterTileType(tile) == WATER_TILE_DEPOT;
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69 case MP_RAILWAY: return GetRailTileType(tile) == RAIL_TILE_DEPOT;
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70 case MP_STATION: return IsHangar(tile);
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71 default: return false;
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72 }
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73 }
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74
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75 /**
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76 * Find out if the slope of the tile is suitable to build a depot of given direction
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77 * @param direction The direction in which the depot's exit points
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78 * @param tileh The slope of the tile in question
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79 * @return true if the construction is possible
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80
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81 * This is checked by the ugly 0x4C >> direction magic, which does the following:
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82 * 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
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83 * So: for direction (only the significant bits are shown)<p>
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84 * 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
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85 * 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
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86 * 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
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87 * 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
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88 * So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh
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89 */
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90 static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
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91 {
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92 return ((0x4C >> direction) & tileh) != 0;
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93 }
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94
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95 Depot *GetDepotByTile(TileIndex tile);
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96 void InitializeDepots();
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97
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98 void DeleteDepotHighlightOfVehicle(const Vehicle *v);
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99
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100 #endif /* DEPOT_H */