loading set from file

[SilverWarior]

I know that using strings for naming block types might look easier but in the end it only complicates things not to mention that operating with strings is ususally slower.
So I advice you to use numbers for defining your block type. Why? Becouse with numbers you can quickly kinda divide all of your block types into sets.
Take a look at next example of block definition:

//Pseudocode

//Passable blocks: 0-100
begin
  0 = air
  1 = water
  2 = background wall
  3 = doors
  ....
end

//Unpassable blocks 100-900
begin
  //Destructable blocks
  begin
    //Ground 100-199
    begin
      100 = dirt
      101 = grass
      102 = stone
      ...
    end
    //Minerals 200-300
    begin
      200 = iron
      201 = coal
      202 = coper
      ...
    end
  //Undestructable blocks 900-1000
  begin
    901 = bedrock
  end
end

In the end you can also define numeric sets in form of btMinerals: 201..300. This alows you to change the block definition types at any time without the need to recompile your program and still use sets to quickly determine block type.