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annotate src/road_map.h @ 6661:5850ac8865e8 draft

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(svn r9892) -Codechange: lots of ground work for allowing multiple types of "road" with multiple owners on a single tile.
author rubidium <rubidium@openttd.org>
date Sun, 20 May 2007 19:14:08 +0000
parents c8862595d06b
children baa28c8cfe84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* $Id$ */
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2
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3 /** @file road_map.h */
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4
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5 #ifndef ROAD_MAP_H
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6 #define ROAD_MAP_H
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7
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8 #include "macros.h"
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9 #include "rail.h"
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10 #include "road.h"
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11 #include "tile.h"
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12
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13
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14 enum RoadTileType {
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15 ROAD_TILE_NORMAL,
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16 ROAD_TILE_CROSSING,
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17 ROAD_TILE_DEPOT
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18 };
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19
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20 static inline RoadTileType GetRoadTileType(TileIndex t)
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21 {
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22 assert(IsTileType(t, MP_STREET));
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23 return (RoadTileType)GB(_m[t].m5, 6, 2);
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24 }
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25
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26 static inline bool IsLevelCrossing(TileIndex t)
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27 {
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28 return GetRoadTileType(t) == ROAD_TILE_CROSSING;
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29 }
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31 static inline bool IsLevelCrossingTile(TileIndex t)
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32 {
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33 return IsTileType(t, MP_STREET) && IsLevelCrossing(t);
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34 }
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35
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36 static inline RoadBits GetRoadBits(TileIndex t, RoadType rt)
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37 {
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38 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL);
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39 switch (rt) {
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40 default: NOT_REACHED();
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41 case ROADTYPE_ROAD: return (RoadBits)GB(_m[t].m4, 0, 4);
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42 case ROADTYPE_TRAM: return (RoadBits)GB(_m[t].m4, 4, 4);
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43 case ROADTYPE_HWAY: return (RoadBits)GB(_m[t].m6, 2, 4);
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44 }
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45 }
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46
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47 static inline RoadBits GetAllRoadBits(TileIndex tile)
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48 {
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49 return GetRoadBits(tile, ROADTYPE_ROAD) | GetRoadBits(tile, ROADTYPE_TRAM) | GetRoadBits(tile, ROADTYPE_HWAY);
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50 }
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51
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52 static inline void SetRoadBits(TileIndex t, RoadBits r, RoadType rt)
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53 {
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54 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL); // XXX incomplete
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55 switch (rt) {
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56 default: NOT_REACHED();
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57 case ROADTYPE_ROAD: SB(_m[t].m4, 0, 4, r); break;
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58 case ROADTYPE_TRAM: SB(_m[t].m4, 4, 4, r); break;
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59 case ROADTYPE_HWAY: SB(_m[t].m6, 2, 4, r); break;
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60 }
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61 }
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62
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63 static inline RoadTypes GetRoadTypes(TileIndex t)
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64 {
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65 if (IsTileType(t, MP_STREET)) {
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66 return (RoadTypes)GB(_me[t].m7, 5, 3);
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67 } else {
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68 return (RoadTypes)GB(_m[t].m3, 0, 3);
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69 }
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70 }
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71
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72 static inline void SetRoadTypes(TileIndex t, RoadTypes rt)
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73 {
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74 if (IsTileType(t, MP_STREET)) {
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75 SB(_me[t].m7, 5, 3, rt);
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76 } else {
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77 assert(IsTileType(t, MP_STATION) || IsTileType(t, MP_TUNNELBRIDGE));
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78 SB(_m[t].m3, 0, 2, rt);
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79 }
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80 }
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81
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82 static inline Owner GetRoadOwner(TileIndex t, RoadType rt)
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83 {
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84 if (!IsTileType(t, MP_STREET)) return GetTileOwner(t);
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85
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86 switch (GetRoadTileType(t)) {
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87 default: NOT_REACHED();
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88 case ROAD_TILE_NORMAL:
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89 switch (rt) {
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90 default: NOT_REACHED();
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91 case ROADTYPE_ROAD: return (Owner)GB( _m[t].m1, 0, 5);
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92 case ROADTYPE_TRAM: return (Owner)GB( _m[t].m5, 0, 5);
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93 case ROADTYPE_HWAY: return (Owner)GB(_me[t].m7, 0, 5);
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94 }
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95 case ROAD_TILE_CROSSING:
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96 switch (rt) {
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97 default: NOT_REACHED();
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98 case ROADTYPE_ROAD: return (Owner)GB( _m[t].m4, 0, 5);
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99 case ROADTYPE_TRAM: return (Owner)GB( _m[t].m5, 0, 5);
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100 case ROADTYPE_HWAY: return (Owner)GB(_me[t].m7, 0, 5);
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101 }
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102 case ROAD_TILE_DEPOT: return GetTileOwner(t);
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103 }
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104 }
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105
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106 static inline void SetRoadOwner(TileIndex t, RoadType rt, Owner o)
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107 {
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108 if (!IsTileType(t, MP_STREET)) return SetTileOwner(t, o);
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109
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110 switch (GetRoadTileType(t)) {
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111 default: NOT_REACHED();
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112 case ROAD_TILE_NORMAL:
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113 switch (rt) {
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114 default: NOT_REACHED();
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115 case ROADTYPE_ROAD: SB( _m[t].m1, 0, 5, o); break;
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116 case ROADTYPE_TRAM: SB( _m[t].m5, 0, 5, o); break;
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117 case ROADTYPE_HWAY: SB(_me[t].m7, 0, 5, o); break;
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118 }
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119 case ROAD_TILE_CROSSING:
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120 switch (rt) {
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121 default: NOT_REACHED();
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122 case ROADTYPE_ROAD: SB( _m[t].m4, 0, 5, o); break;
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123 case ROADTYPE_TRAM: SB( _m[t].m5, 0, 5, o); break;
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124 case ROADTYPE_HWAY: SB(_me[t].m7, 0, 5, o); break;
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125 }
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126 case ROAD_TILE_DEPOT: return SetTileOwner(t, o);
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127 }
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128 }
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129
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130 static inline Axis GetCrossingRoadAxis(TileIndex t)
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131 {
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132 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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133 return (Axis)GB(_m[t].m4, 6, 1);
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134 }
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135
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136 static inline RoadBits GetCrossingRoadBits(TileIndex tile)
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137 {
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138 return GetCrossingRoadAxis(tile) == AXIS_X ? ROAD_X : ROAD_Y;
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139 }
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140
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141 static inline TrackBits GetCrossingRailBits(TileIndex tile)
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142 {
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143 return AxisToTrackBits(OtherAxis(GetCrossingRoadAxis(tile)));
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144 }
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145
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146
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147 static inline void UnbarCrossing(TileIndex t)
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148 {
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149 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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150 CLRBIT(_m[t].m4, 5);
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151 }
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152
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153 static inline void BarCrossing(TileIndex t)
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154 {
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155 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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156 SETBIT(_m[t].m4, 5);
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157 }
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158
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159 static inline bool IsCrossingBarred(TileIndex t)
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160 {
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161 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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162 return HASBIT(_m[t].m4, 5);
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163 }
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164
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165 #define IsOnDesert IsOnSnow
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166 static inline bool IsOnSnow(TileIndex t)
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167 {
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168 return HASBIT(_m[t].m3, 7);
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169 }
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170
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171 #define ToggleDesert ToggleSnow
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172 static inline void ToggleSnow(TileIndex t)
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173 {
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174 TOGGLEBIT(_m[t].m3, 7);
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175 }
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176
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177
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178 enum Roadside {
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179 ROADSIDE_BARREN = 0,
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180 ROADSIDE_GRASS = 1,
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181 ROADSIDE_PAVED = 2,
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182 ROADSIDE_STREET_LIGHTS = 3,
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183 ROADSIDE_TREES = 5,
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184 ROADSIDE_GRASS_ROAD_WORKS = 6,
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185 ROADSIDE_PAVED_ROAD_WORKS = 7
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186 };
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187
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188 static inline Roadside GetRoadside(TileIndex tile)
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189 {
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190 return (Roadside)GB(_m[tile].m3, 4, 3);
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191 }
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192
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193 static inline void SetRoadside(TileIndex tile, Roadside s)
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194 {
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195 SB(_m[tile].m3, 4, 3, s);
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196 }
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197
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198 static inline bool HasRoadWorks(TileIndex t)
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199 {
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200 return GetRoadside(t) >= ROADSIDE_GRASS_ROAD_WORKS;
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201 }
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202
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203 static inline bool IncreaseRoadWorksCounter(TileIndex t)
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204 {
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205 AB(_m[t].m3, 0, 4, 1);
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206
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207 return GB(_m[t].m3, 0, 4) == 15;
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208 }
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209
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210 static inline void StartRoadWorks(TileIndex t)
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211 {
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212 assert(!HasRoadWorks(t));
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213 /* Remove any trees or lamps in case or roadwork */
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214 switch (GetRoadside(t)) {
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215 case ROADSIDE_BARREN:
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216 case ROADSIDE_GRASS: SetRoadside(t, ROADSIDE_GRASS_ROAD_WORKS); break;
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217 default: SetRoadside(t, ROADSIDE_PAVED_ROAD_WORKS); break;
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218 }
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219 }
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220
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221 static inline void TerminateRoadWorks(TileIndex t)
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222 {
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223 assert(HasRoadWorks(t));
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224 SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
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225 /* Stop the counter */
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226 SB(_m[t].m3, 0, 4, 0);
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227 }
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228
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229
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230 static inline DiagDirection GetRoadDepotDirection(TileIndex t)
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231 {
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232 assert(GetRoadTileType(t) == ROAD_TILE_DEPOT);
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233 return (DiagDirection)GB(_m[t].m5, 0, 2);
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234 }
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235
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236
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237 /**
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238 * Returns the RoadBits on an arbitrary tile
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239 * Special behaviour:
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240 * - road depots: entrance is treated as road piece
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241 * - road tunnels: entrance is treated as road piece
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242 * - bridge ramps: start of the ramp is treated as road piece
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243 * - bridge middle parts: bridge itself is ignored
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244 * @param tile the tile to get the road bits for
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245 * @param rt the road type to get the road bits form
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246 * @return the road bits of the given tile
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247 */
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248 RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt);
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249
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250 /**
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251 * Get the accessible track bits for the given tile.
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252 * Special behaviour:
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253 * - road depots: no track bits
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254 * - non-drive-through stations: no track bits
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255 * @param tile the tile to get the track bits for
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256 * @return the track bits for the given tile
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257 */
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258 TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt);
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259
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260
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261 static inline void MakeRoadNormal(TileIndex t, RoadBits bits, RoadTypes rot, TownID town, Owner road, Owner tram, Owner hway)
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262 {
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263 SetTileType(t, MP_STREET);
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264 SetTileOwner(t, road);
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265 _m[t].m2 = town;
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266 _m[t].m3 = 0;
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267 _m[t].m4 = (HASBIT(rot, ROADTYPE_ROAD) ? bits : 0) << 4 | HASBIT(rot, ROADTYPE_TRAM) ? bits : 0;
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268 _m[t].m5 = ROAD_TILE_NORMAL << 6 | tram;
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269 SB(_m[t].m6, 2, 4, HASBIT(rot, ROADTYPE_HWAY) ? bits : 0);
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270 _me[t].m7 = rot << 5 | hway;
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271 }
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272
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273
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274 static inline void MakeRoadCrossing(TileIndex t, Owner road, Owner tram, Owner hway, Owner rail, Axis roaddir, RailType rat, RoadTypes rot, uint town)
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275 {
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276 SetTileType(t, MP_STREET);
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277 SetTileOwner(t, rail);
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278 _m[t].m2 = town;
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279 _m[t].m3 = rat;
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280 _m[t].m4 = roaddir << 6 | road;
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281 _m[t].m5 = ROAD_TILE_CROSSING << 6 | tram;
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282 SB(_m[t].m6, 2, 4, 0);
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283 _me[t].m7 = rot << 5 | hway;
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284 }
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285
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286
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287 static inline void MakeRoadDepot(TileIndex t, Owner owner, DiagDirection dir, RoadType rt)
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288 {
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289 SetTileType(t, MP_STREET);
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290 SetTileOwner(t, owner);
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291 _m[t].m2 = 0;
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292 _m[t].m3 = 0;
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293 _m[t].m4 = 0;
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294 _m[t].m5 = ROAD_TILE_DEPOT << 6 | dir;
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295 SB(_m[t].m6, 2, 4, 0);
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296 _me[t].m7 = RoadTypeToRoadTypes(rt) << 5;
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297 }
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298
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299 #endif /* ROAD_MAP_H */