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annotate src/unmovable_map.h @ 7272:dc7fb38ec443 draft

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(svn r10601) -Codechange: store (and use) the type of stations instead of hardcoding station types by graphics IDs.
author rubidium <rubidium@openttd.org>
date Mon, 16 Jul 2007 23:55:22 +0000
parents 5459e8d2dc0d
children 38bb7c45688f
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1 /* $Id$ */
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2
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3 /** @file unmovable_map.h */
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4
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5 #ifndef UNMOVABLE_MAP_H
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6 #define UNMOVABLE_MAP_H
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7
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8 enum {
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9 HQ_NUM_TILE = 4, ///< Number of HQ tiles
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10 HQ_NUM_SIZE = 5 ///< Number of stages of an HQ
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11 };
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12
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13 /** Types of unmovable structure */
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14 enum UnmovableType {
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15 UNMOVABLE_TRANSMITTER = 0, ///< The large antenna
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16 UNMOVABLE_LIGHTHOUSE = 1, ///< The nice lighthouse
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17 UNMOVABLE_STATUE = 2, ///< Statue in towns
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18 UNMOVABLE_OWNED_LAND = 3, ///< Owned land 'flag'
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19 UNMOVABLE_HQ_NORTH = 0x80, ///< Offset for the northern HQ tile
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20 UNMOVABLE_HQ_WEST = 0x81, ///< Offset for the western HQ tile
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21 UNMOVABLE_HQ_EAST = 0x82, ///< Offset for the eastern HQ tile
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22 UNMOVABLE_HQ_SOUTH = 0x83, ///< Offset for the southern HQ tile
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23
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24 /** End of the HQ (rather end + 1 for IS_INT_INSIDE) */
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25 UNMOVABLE_HQ_END = UNMOVABLE_HQ_NORTH + HQ_NUM_SIZE * HQ_NUM_TILE
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26 };
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28
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29
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30 /**
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31 * Gets the UnmovableType of the given unmovable tile
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32 * @param t the tile to get the type from.
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33 * @pre IsTileType(t, MP_UNMOVABLE)
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34 * @return the type.
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35 */
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36 static inline UnmovableType GetUnmovableType(TileIndex t)
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37 {
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38 assert(IsTileType(t, MP_UNMOVABLE));
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39 return (UnmovableType)_m[t].m5;
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40 }
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41
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42 /**
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43 * Does the given tile have a transmitter?
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44 * @param t the tile to inspect.
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45 * @return true if and only if the tile has a transmitter.
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46 */
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47 static inline bool IsTransmitterTile(TileIndex t)
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48 {
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49 return IsTileType(t, MP_UNMOVABLE) && GetUnmovableType(t) == UNMOVABLE_TRANSMITTER;
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50 }
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51
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52 /**
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53 * Is this unmovable tile an 'owned land' tile?
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54 * @param t the tile to inspect.
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55 * @pre IsTileType(t, MP_UNMOVABLE)
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56 * @return true if and only if the tile is an 'owned land' tile.
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57 */
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58 static inline bool IsOwnedLand(TileIndex t)
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59 {
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60 assert(IsTileType(t, MP_UNMOVABLE));
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61 return GetUnmovableType(t) == UNMOVABLE_OWNED_LAND;
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62 }
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63
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64 /**
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65 * Is the given tile (pre-)owned by someone (the little flags)?
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66 * @param t the tile to inspect.
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67 * @return true if and only if the tile is an 'owned land' tile.
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68 */
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69 static inline bool IsOwnedLandTile(TileIndex t)
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70 {
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71 return IsTileType(t, MP_UNMOVABLE) && IsOwnedLand(t);
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72 }
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73
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74 /**
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75 * Is this unmovable tile a HQ tile?
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76 * @param t the tile to inspect.
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77 * @pre IsTileType(t, MP_UNMOVABLE)
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78 * @return true if and only if the tile is a HQ tile.
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79 */
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80 static inline bool IsCompanyHQ(TileIndex t)
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81 {
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82 assert(IsTileType(t, MP_UNMOVABLE));
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83 return IS_INT_INSIDE(GetUnmovableType(t), UNMOVABLE_HQ_NORTH, UNMOVABLE_HQ_END);
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84 }
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85
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86 /**
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87 * Is this unmovable tile a statue?
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88 * @param t the tile to inspect.
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89 * @pre IsTileType(t, MP_UNMOVABLE)
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90 * @return true if and only if the tile is a statue.
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91 */
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92 static inline bool IsStatue(TileIndex t)
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93 {
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94 assert(IsTileType(t, MP_UNMOVABLE));
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95 return GetUnmovableType(t) == UNMOVABLE_STATUE;
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96 }
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97
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98 /**
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99 * Is the given tile a statue?
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100 * @param t the tile to inspect.
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101 * @return true if and only if the tile is a statue.
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102 */
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103 static inline bool IsStatueTile(TileIndex t)
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104 {
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105 return IsTileType(t, MP_UNMOVABLE) && IsStatue(t);
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106 }
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107
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108 /**
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109 * Get the town of the given statue tile.
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110 * @param t the tile of the statue.
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111 * @pre IsStatueTile(t)
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112 * @return the town the given statue is in.
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113 */
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114 static inline TownID GetStatueTownID(TileIndex t)
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115 {
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116 assert(IsStatueTile(t));
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117 return _m[t].m2;
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118 }
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119
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120 /**
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121 * Get the 'stage' of the HQ.
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122 * @param t a tile of the HQ.
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123 * @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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124 * @return the 'stage' of the HQ.
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125 */
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126 static inline byte GetCompanyHQSize(TileIndex t)
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127 {
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128 assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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129 return GB(_m[t].m5, 2, 3);
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130 }
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131
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132 /**
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133 * Get the 'section' (including stage) of the HQ.
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134 * @param t a tile of the HQ.
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135 * @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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136 * @return the 'section' of the HQ.
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137 */
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138 static inline byte GetCompanyHQSection(TileIndex t)
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139 {
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140 assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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141 return GB(_m[t].m5, 0, 5);
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142 }
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143
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144 /**
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145 * Enlarge the given HQ to the given size. If the new size
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146 * is larger than the current size, nothing happens.
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147 * @param t the tile of the HQ.
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148 * @param size the new size of the HQ.
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149 * @pre t is the northern tile of the HQ
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150 */
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151 static inline void EnlargeCompanyHQ(TileIndex t, byte size)
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152 {
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153 assert(GB(GetCompanyHQSection(t), 0, 2) == 0);
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154
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155 size *= 4;
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156 if (size <= _m[t].m5 - UNMOVABLE_HQ_NORTH) return;
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157
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158 _m[t + TileDiffXY(0, 0)].m5 = UNMOVABLE_HQ_NORTH + size;
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159 _m[t + TileDiffXY(0, 1)].m5 = UNMOVABLE_HQ_WEST + size;
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160 _m[t + TileDiffXY(1, 0)].m5 = UNMOVABLE_HQ_EAST + size;
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161 _m[t + TileDiffXY(1, 1)].m5 = UNMOVABLE_HQ_SOUTH + size;
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162 }
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163
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164
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165 /**
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166 * Make an Unmovable tile.
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167 * @note do not use this function directly. Use one of the other Make* functions.
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168 * @param t the tile to make unmovable.
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169 * @param u the unmovable type of the tile.
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170 * @param o the new owner of the tile.
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171 */
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172 static inline void MakeUnmovable(TileIndex t, UnmovableType u, Owner o)
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173 {
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174 SetTileType(t, MP_UNMOVABLE);
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175 SetTileOwner(t, o);
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176 _m[t].m2 = 0;
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177 _m[t].m3 = 0;
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178 _m[t].m4 = 0;
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179 _m[t].m5 = u;
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180 }
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181
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182
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183 /**
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184 * Make a transmitter tile.
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185 * @param t the tile to make a transmitter.
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186 */
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187 static inline void MakeTransmitter(TileIndex t)
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188 {
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189 MakeUnmovable(t, UNMOVABLE_TRANSMITTER, OWNER_NONE);
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190 }
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191
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192 /**
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193 * Make a lighthouse tile.
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194 * @param t the tile to make a transmitter.
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195 */
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196 static inline void MakeLighthouse(TileIndex t)
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197 {
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198 MakeUnmovable(t, UNMOVABLE_LIGHTHOUSE, OWNER_NONE);
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199 }
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200
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201 /**
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202 * Make a statue tile.
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203 * @param t the tile to make a statue.
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204 * @param o the owner of the statue.
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205 * @param town_id the town the statue was built in.
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206 */
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207 static inline void MakeStatue(TileIndex t, Owner o, TownID town_id)
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208 {
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209 MakeUnmovable(t, UNMOVABLE_STATUE, o);
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210 _m[t].m2 = town_id;
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211 }
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212
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213 /**
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214 * Make an 'owned land' tile.
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215 * @param t the tile to make an 'owned land' tile.
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216 * @param o the owner of the land.
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217 */
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218 static inline void MakeOwnedLand(TileIndex t, Owner o)
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219 {
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220 MakeUnmovable(t, UNMOVABLE_OWNED_LAND, o);
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221 }
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222
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223 /**
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224 * Make an HQ with the give tile as it's northern tile.
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225 * @param t the tile to make the northern tile of a HQ.
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226 * @param o the owner of the HQ.
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227 */
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228 static inline void MakeCompanyHQ(TileIndex t, Owner o)
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229 {
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230 MakeUnmovable(t + TileDiffXY(0, 0), UNMOVABLE_HQ_NORTH, o);
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231 MakeUnmovable(t + TileDiffXY(0, 1), UNMOVABLE_HQ_WEST, o);
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232 MakeUnmovable(t + TileDiffXY(1, 0), UNMOVABLE_HQ_EAST, o);
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233 MakeUnmovable(t + TileDiffXY(1, 1), UNMOVABLE_HQ_SOUTH, o);
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234 }
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235
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236 #endif /* UNMOVABLE_MAP_H */