DoCommandP(tile, 8, (uint32)mode, CcTerraform, CMD_TERRAFORM_LAND | CMD_AUTO | CMD_MSG(STR_0809_CAN_T_LOWER_LAND_HERE));

	}

}

/** Scenario editor command that generates desert areas */

static void GenerateDesertArea(TileIndex end, TileIndex start)

{

	int size_x, size_y;

	int sx = TileX(start);

	int sy = TileY(start);

	int ex = TileX(end);

	int ey = TileY(end);

	if (_game_mode != GM_EDITOR) return;

	if (ex < sx) intswap(ex, sx);

	if (ey < sy) intswap(ey, sy);

	size_x = (ex - sx) + 1;

	size_y = (ey - sy) + 1;

	_generating_world = true;

	BEGIN_TILE_LOOP(tile, size_x, size_y, TILE_XY(sx, sy)) {

		if (GetTileType(tile) != MP_WATER) {

			SetMapExtraBits(tile, (_ctrl_pressed) ? 0 : 1);

			MarkTileDirtyByTile(tile);

		}

	} END_TILE_LOOP(tile, size_x, size_y, 0);

	_generating_world = false;

}

/**

 * A central place to handle all X_AND_Y dragged GUI functions.

 * @param we @WindowEvent variable holding in its higher bits (excluding the lower

 * 4, since that defined the X_Y drag) the type of action to be performed

 * @return Returns true if the action was found and handled, and false otherwise. This

 * allows for additional implements that are more local. For example X_Y drag

 * of convertrail which belongs in rail_gui.c and not terraform_gui.c

 **/

bool GUIPlaceProcDragXY(const WindowEvent *we)

{

	TileIndex start_tile = we->place.starttile;

	TileIndex end_tile = we->place.tile;

	switch (we->place.userdata >> 4) {

	case GUI_PlaceProc_DemolishArea >> 4:

		DoCommandP(end_tile, start_tile, 0, CcPlaySound10, CMD_CLEAR_AREA | CMD_MSG(STR_00B5_CAN_T_CLEAR_THIS_AREA));

		break;

	case GUI_PlaceProc_LevelArea >> 4: