Random Chitchat 2012-2016

[xoft]

The point is, with a for loop, the computer knows the number of iterations, so it can optimize it in some ways.

Anyway, for a more complete example: (I hope I'll get it right, no promises though)

Code:

local PlayerX = a_Player:GetPosX();
local PlayerY = a_Player:GetPosY();
local PlayerZ = a_Player:GetPosZ();
local Area = cBlockArea();
if (not(Area:Read(a_Player:GetWorld(), PlayerX - 8, PlayerX + 8, PlayerY - 8, PlayerY + 8, PlayerZ - 8, PlayerZ + 8, cBlockArea.baTypes + cBlockArea.baMetas))) then
  -- Cannot read the area around player, bail out
  return;
end

local x, y, z;
for y = -8, 8 do
  for z = -8, 8 do
    for x = -8, 8 do
      local BlockType, BlockMeta;
      BlockType, BlockMeta = Area:GetRelBlockTypeMeta(x, y, z, BlockType, BlockMeta);  
        -- stupid ToLua makes us write the last two arguments, they are otherwise useless and unused
      -- Do something with the block
    end  -- for x
  end  -- for z
end  -- for y

---

I don't know what your Execute function does, I suppose it's doing something with block in the world using World:GetBlock(); that is gonna be really slow. You really really want to use the BlockArea version of this.