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annotate src/road_map.h @ 8529:6a75c42267d1 draft

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(svn r12104) -Fix (r12103): remember loading indicators transparency settings and make in switchable by Ctrl+9
author smatz <smatz@openttd.org>
date Sun, 10 Feb 2008 18:31:33 +0000
parents 6312fafcfe47
children 992fa65afba1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 "track_func.h"
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9 #include "rail_type.h"
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10 #include "town_type.h"
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11 #include "road_func.h"
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12 #include "tile_map.h"
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13
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14
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15 enum RoadTileType {
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16 ROAD_TILE_NORMAL,
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17 ROAD_TILE_CROSSING,
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18 ROAD_TILE_DEPOT
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19 };
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21 static inline RoadTileType GetRoadTileType(TileIndex t)
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22 {
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23 assert(IsTileType(t, MP_ROAD));
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24 return (RoadTileType)GB(_m[t].m5, 6, 2);
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25 }
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26
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27 static inline bool IsLevelCrossing(TileIndex t)
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28 {
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29 return GetRoadTileType(t) == ROAD_TILE_CROSSING;
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30 }
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31
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32 static inline bool IsLevelCrossingTile(TileIndex t)
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33 {
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34 return IsTileType(t, MP_ROAD) && IsLevelCrossing(t);
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35 }
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36
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37 static inline RoadBits GetRoadBits(TileIndex t, RoadType rt)
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38 {
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39 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL);
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40 switch (rt) {
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41 default: NOT_REACHED();
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42 case ROADTYPE_ROAD: return (RoadBits)GB(_m[t].m4, 0, 4);
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43 case ROADTYPE_TRAM: return (RoadBits)GB(_m[t].m4, 4, 4);
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44 case ROADTYPE_HWAY: return (RoadBits)GB(_m[t].m6, 2, 4);
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45 }
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46 }
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47
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48 static inline RoadBits GetAllRoadBits(TileIndex tile)
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49 {
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50 return GetRoadBits(tile, ROADTYPE_ROAD) | GetRoadBits(tile, ROADTYPE_TRAM) | GetRoadBits(tile, ROADTYPE_HWAY);
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51 }
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52
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53 static inline void SetRoadBits(TileIndex t, RoadBits r, RoadType rt)
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54 {
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55 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL); // XXX incomplete
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56 switch (rt) {
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57 default: NOT_REACHED();
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58 case ROADTYPE_ROAD: SB(_m[t].m4, 0, 4, r); break;
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59 case ROADTYPE_TRAM: SB(_m[t].m4, 4, 4, r); break;
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60 case ROADTYPE_HWAY: SB(_m[t].m6, 2, 4, r); break;
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61 }
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62 }
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63
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64 static inline RoadTypes GetRoadTypes(TileIndex t)
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65 {
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66 if (IsTileType(t, MP_ROAD)) {
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67 return (RoadTypes)GB(_me[t].m7, 5, 3);
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68 } else {
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69 return (RoadTypes)GB(_m[t].m3, 0, 3);
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70 }
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71 }
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72
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73 static inline void SetRoadTypes(TileIndex t, RoadTypes rt)
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74 {
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75 if (IsTileType(t, MP_ROAD)) {
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76 SB(_me[t].m7, 5, 3, rt);
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77 } else {
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78 assert(IsTileType(t, MP_STATION) || IsTileType(t, MP_TUNNELBRIDGE));
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79 SB(_m[t].m3, 0, 2, rt);
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80 }
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81 }
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82
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83 static inline Owner GetRoadOwner(TileIndex t, RoadType rt)
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84 {
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85 if (!IsTileType(t, MP_ROAD)) return GetTileOwner(t);
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86
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87 switch (GetRoadTileType(t)) {
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88 default: NOT_REACHED();
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89 case ROAD_TILE_NORMAL:
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90 switch (rt) {
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91 default: NOT_REACHED();
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92 case ROADTYPE_ROAD: return (Owner)GB( _m[t].m1, 0, 5);
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93 case ROADTYPE_TRAM: {
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94 /* Trams don't need OWNER_TOWN, and remapping OWNER_NONE
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95 * to OWNER_TOWN makes it use one bit less */
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96 Owner o = (Owner)GB( _m[t].m5, 0, 4);
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97 return o == OWNER_TOWN ? OWNER_NONE : o;
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98 }
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99 case ROADTYPE_HWAY: return (Owner)GB(_me[t].m7, 0, 5);
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100 }
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101 case ROAD_TILE_CROSSING:
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102 switch (rt) {
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103 default: NOT_REACHED();
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104 case ROADTYPE_ROAD: return (Owner)GB( _m[t].m4, 0, 5);
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105 case ROADTYPE_TRAM: {
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106 /* Trams don't need OWNER_TOWN, and remapping OWNER_NONE
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107 * to OWNER_TOWN makes it use one bit less */
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108 Owner o = (Owner)GB( _m[t].m5, 0, 4);
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109 return o == OWNER_TOWN ? OWNER_NONE : o;
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110 }
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111 case ROADTYPE_HWAY: return (Owner)GB(_me[t].m7, 0, 5);
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112 }
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113 case ROAD_TILE_DEPOT: return GetTileOwner(t);
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114 }
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115 }
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116
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117 static inline void SetRoadOwner(TileIndex t, RoadType rt, Owner o)
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118 {
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119 if (!IsTileType(t, MP_ROAD)) return SetTileOwner(t, o);
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120
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121 switch (GetRoadTileType(t)) {
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122 default: NOT_REACHED();
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123 case ROAD_TILE_NORMAL:
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124 switch (rt) {
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125 default: NOT_REACHED();
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126 case ROADTYPE_ROAD: SB( _m[t].m1, 0, 5, o); break;
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127 case ROADTYPE_TRAM: SB( _m[t].m5, 0, 4, o == OWNER_NONE ? OWNER_TOWN : o); break;
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128 case ROADTYPE_HWAY: SB(_me[t].m7, 0, 5, o); break;
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129 }
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130 break;
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131 case ROAD_TILE_CROSSING:
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132 switch (rt) {
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133 default: NOT_REACHED();
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134 case ROADTYPE_ROAD: SB( _m[t].m4, 0, 5, o); break;
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135 /* Trams don't need OWNER_TOWN, and remapping OWNER_NONE
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136 * to OWNER_TOWN makes it use one bit less */
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137 case ROADTYPE_TRAM: SB( _m[t].m5, 0, 4, o == OWNER_NONE ? OWNER_TOWN : o); break;
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138 case ROADTYPE_HWAY: SB(_me[t].m7, 0, 5, o); break;
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139 }
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140 break;
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141 case ROAD_TILE_DEPOT: return SetTileOwner(t, o);
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142 }
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143 }
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144
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145 /** Which directions are disallowed ? */
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146 enum DisallowedRoadDirections {
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147 DRD_NONE, ///< None of the directions are disallowed
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148 DRD_SOUTHBOUND, ///< All southbound traffic is disallowed
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149 DRD_NORTHBOUND, ///< All northbound traffic is disallowed
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150 DRD_BOTH, ///< All directions are disallowed
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151 DRD_END
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152 };
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153 DECLARE_ENUM_AS_BIT_SET(DisallowedRoadDirections);
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154
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155 /**
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156 * Gets the disallowed directions
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157 * @param t the tile to get the directions from
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158 * @return the disallowed directions
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159 */
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160 static inline DisallowedRoadDirections GetDisallowedRoadDirections(TileIndex t)
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161 {
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162 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL);
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163 return (DisallowedRoadDirections)GB(_m[t].m5, 4, 2);
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164 }
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165
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166 /**
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167 * Sets the disallowed directions
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168 * @param t the tile to set the directions for
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169 * @param drd the disallowed directions
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170 */
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171 static inline void SetDisallowedRoadDirections(TileIndex t, DisallowedRoadDirections drd)
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172 {
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173 assert(GetRoadTileType(t) == ROAD_TILE_NORMAL);
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174 assert(drd < DRD_END);
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diff changeset
175 SB(_m[t].m5, 4, 2, drd);
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176 }
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177
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178 static inline Axis GetCrossingRoadAxis(TileIndex t)
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179 {
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180 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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181 return (Axis)GB(_m[t].m4, 6, 1);
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182 }
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183
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184 static inline RoadBits GetCrossingRoadBits(TileIndex tile)
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185 {
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186 return GetCrossingRoadAxis(tile) == AXIS_X ? ROAD_X : ROAD_Y;
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187 }
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188
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189 static inline TrackBits GetCrossingRailBits(TileIndex tile)
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190 {
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191 return AxisToTrackBits(OtherAxis(GetCrossingRoadAxis(tile)));
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192 }
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193
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194 static inline bool IsCrossingBarred(TileIndex t)
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195 {
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196 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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197 return HasBit(_m[t].m4, 5);
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198 }
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199
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200 static inline void SetCrossingBarred(TileIndex t, bool barred)
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201 {
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202 assert(GetRoadTileType(t) == ROAD_TILE_CROSSING);
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203 SB(_m[t].m4, 5, 1, barred);
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204 }
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205
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206 static inline void UnbarCrossing(TileIndex t)
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207 {
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208 SetCrossingBarred(t, false);
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209 }
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210
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211 static inline void BarCrossing(TileIndex t)
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212 {
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213 SetCrossingBarred(t, true);
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214 }
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215
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216 #define IsOnDesert IsOnSnow
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217 static inline bool IsOnSnow(TileIndex t)
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218 {
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219 return HasBit(_m[t].m3, 7);
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220 }
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221
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222 #define ToggleDesert ToggleSnow
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223 static inline void ToggleSnow(TileIndex t)
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224 {
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225 ToggleBit(_m[t].m3, 7);
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226 }
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227
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228
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229 enum Roadside {
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230 ROADSIDE_BARREN = 0,
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231 ROADSIDE_GRASS = 1,
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232 ROADSIDE_PAVED = 2,
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233 ROADSIDE_STREET_LIGHTS = 3,
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234 ROADSIDE_TREES = 5,
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235 ROADSIDE_GRASS_ROAD_WORKS = 6,
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236 ROADSIDE_PAVED_ROAD_WORKS = 7
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237 };
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238
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239 static inline Roadside GetRoadside(TileIndex tile)
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240 {
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241 return (Roadside)GB(_m[tile].m3, 4, 3);
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242 }
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243
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244 static inline void SetRoadside(TileIndex tile, Roadside s)
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245 {
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246 SB(_m[tile].m3, 4, 3, s);
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247 }
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248
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249 static inline bool HasRoadWorks(TileIndex t)
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250 {
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251 return GetRoadside(t) >= ROADSIDE_GRASS_ROAD_WORKS;
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252 }
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253
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254 static inline bool IncreaseRoadWorksCounter(TileIndex t)
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255 {
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256 AB(_m[t].m3, 0, 4, 1);
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257
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258 return GB(_m[t].m3, 0, 4) == 15;
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259 }
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260
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261 static inline void StartRoadWorks(TileIndex t)
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262 {
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263 assert(!HasRoadWorks(t));
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264 /* Remove any trees or lamps in case or roadwork */
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265 switch (GetRoadside(t)) {
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266 case ROADSIDE_BARREN:
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267 case ROADSIDE_GRASS: SetRoadside(t, ROADSIDE_GRASS_ROAD_WORKS); break;
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268 default: SetRoadside(t, ROADSIDE_PAVED_ROAD_WORKS); break;
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269 }
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270 }
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271
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272 static inline void TerminateRoadWorks(TileIndex t)
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273 {
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274 assert(HasRoadWorks(t));
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275 SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
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276 /* Stop the counter */
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277 SB(_m[t].m3, 0, 4, 0);
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278 }
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279
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280
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281 static inline DiagDirection GetRoadDepotDirection(TileIndex t)
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282 {
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283 assert(GetRoadTileType(t) == ROAD_TILE_DEPOT);
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284 return (DiagDirection)GB(_m[t].m5, 0, 2);
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285 }
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286
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287
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288 /**
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289 * Returns the RoadBits on an arbitrary tile
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290 * Special behaviour:
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291 * - road depots: entrance is treated as road piece
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292 * - road tunnels: entrance is treated as road piece
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293 * - bridge ramps: start of the ramp is treated as road piece
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294 * - bridge middle parts: bridge itself is ignored
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295 * @param tile the tile to get the road bits for
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296 * @param rt the road type to get the road bits form
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297 * @return the road bits of the given tile
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298 */
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299 RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt);
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300
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301 /**
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302 * Get the accessible track bits for the given tile.
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303 * Special behaviour:
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304 * - road depots: no track bits
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305 * - non-drive-through stations: no track bits
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306 * @param tile the tile to get the track bits for
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307 * @return the track bits for the given tile
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308 */
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309 TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt);
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310
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311 /**
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312 * Return if the tile is a valid tile for a crossing.
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313 *
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314 * @note function is overloaded
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315 * @param tile the curent tile
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316 * @param ax the axis of the road over the rail
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317 * @return true if it is a valid tile
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318 */
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319 bool IsPossibleCrossing(const TileIndex tile, Axis ax);
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320
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321
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322 static inline void MakeRoadNormal(TileIndex t, RoadBits bits, RoadTypes rot, TownID town, Owner road, Owner tram, Owner hway)
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323 {
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324 SetTileType(t, MP_ROAD);
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325 SetTileOwner(t, road);
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326 _m[t].m2 = town;
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327 _m[t].m3 = 0;
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328 _m[t].m4 = (HasBit(rot, ROADTYPE_TRAM) ? bits : 0) << 4 | (HasBit(rot, ROADTYPE_ROAD) ? bits : 0);
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329 _m[t].m5 = ROAD_TILE_NORMAL << 6;
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330 SetRoadOwner(t, ROADTYPE_TRAM, tram);
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331 SB(_m[t].m6, 2, 4, HasBit(rot, ROADTYPE_HWAY) ? bits : 0);
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332 _me[t].m7 = rot << 5 | hway;
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333 }
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334
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335
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336 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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337 {
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338 SetTileType(t, MP_ROAD);
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339 SetTileOwner(t, rail);
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340 _m[t].m2 = town;
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341 _m[t].m3 = rat;
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342 _m[t].m4 = roaddir << 6 | road;
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343 _m[t].m5 = ROAD_TILE_CROSSING << 6;
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344 SetRoadOwner(t, ROADTYPE_TRAM, tram);
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345 SB(_m[t].m6, 2, 4, 0);
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346 _me[t].m7 = rot << 5 | hway;
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347 }
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348
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349
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350 static inline void MakeRoadDepot(TileIndex t, Owner owner, DiagDirection dir, RoadType rt)
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351 {
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352 SetTileType(t, MP_ROAD);
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353 SetTileOwner(t, owner);
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354 _m[t].m2 = 0;
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355 _m[t].m3 = 0;
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356 _m[t].m4 = 0;
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357 _m[t].m5 = ROAD_TILE_DEPOT << 6 | dir;
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358 SB(_m[t].m6, 2, 4, 0);
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359 _me[t].m7 = RoadTypeToRoadTypes(rt) << 5;
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360 }
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361
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362 #endif /* ROAD_MAP_H */