Use a:iter instead of for loops for sulfur generation (#423)

HybridDog

2018-07-16 6af0376c23e000b7e2cd4db2659ff5d632c4e60b

Use a:iter instead of for loops for sulfur generation (#423)

 technic_worldgen/oregen.lua

@@ -141,16 +141,19 @@
    for y = minp.y + math.floor(grid_size / 2), maxp.y, grid_size do
    for z = minp.z + math.floor(grid_size / 2), maxp.z, grid_size do
        local c = data[a:index(x, y, z)]
        if (c == c_lava or c == c_lava_flowing) and sulfur_noise:get3d({x = x, y = z, z = z}) >= 0.4 then
            for xx = math.max(minp.x, x - grid_size), math.min(maxp.x, x + grid_size) do
            for yy = math.max(minp.y, y - grid_size), math.min(maxp.y, y + grid_size) do
            for zz = math.max(minp.z, z - grid_size), math.min(maxp.z, z + grid_size) do
                local i = a:index(xx, yy, zz)
        if (c == c_lava or c == c_lava_flowing)
        and sulfur_noise:get3d({x = x, y = z, z = z}) >= 0.4 then
            for i in a:iter(
                math.max(minp.x, x - grid_size),
                math.max(minp.y, y - grid_size),
                math.max(minp.z, z - grid_size),
                math.min(maxp.x, x + grid_size),
                math.min(maxp.y, y + grid_size),
                math.min(maxp.z, z + grid_size)
            ) do
                if data[i] == c_stone and pr:next(1, 10) <= 7 then
                    data[i] = c_sulfur
                end
            end
            end
            end
        end
    end