/** @file terraform_cmd.cpp Commands related to terraforming. */

#include "stdafx.h"

#include "openttd.h"

#include "strings_type.h"

#include "command_func.h"

#include "tile_map.h"

#include "tunnel_map.h"

#include "bridge_map.h"

#include "variables.h"

#include "functions.h"

#include "economy_func.h"

/*

 * In one terraforming command all four corners of a initial tile can be raised/lowered (though this is not available to the player).

 * The maximal amount of height modifications is archieved when raising a complete flat land from sea level to MAX_TILE_HEIGHT or vice versa.

 * This affects all corners with a manhatten distance smaller than MAX_TILE_HEIGHT to one of the initial 4 corners.

 * Their maximal amount is computed to 4 * \sum_{i=1}^{h_max} i  =  2 * h_max * (h_max + 1).

 */