131 

   132 	/**

   133 	 * Build your company's HQ on the given tile.

   134 	 * @param tile the tile to build your HQ on, this tile is the most nothern tile of your HQ.

   135 	 * @pre AIMap::IsValidTile(tile).

   136 	 * @note An HQ can not be removed, only by water or rebuilding; If an HQ is build again, the old one is removed.

   137 	 * @return true if the HQ could be build.

   138 	 */

   139 	static bool BuildCompanyHQ(TileIndex tile);

   140 

   141 	/**

   142 	 * Return the location of a company's HQ.

   143 	 * @param company the company the get the HQ of.

   144 	 * @pre ResolveCompanyIndex(company) != INVALID_COMPANY.

   145 	 * @return The tile of the company's HQ, this tile is the most nothern tile of that HQ, or INVALID_TILE if there is no HQ yet.

   146 	 */

   147 	static TileIndex GetCompanyHQ(CompanyIndex company);