add small progress thing in fill

src/main.lua

@@ -90,14 +90,21 @@ local function fill(ntype, x,y,z, buf, sx,sz)
 
     local neighbors = fill_getneighbors(x,y,z, sx,sz, inittype,buf)
     buf[posasstring(x,y,z)] = ntype
+    local processed = 0
+    local totalneighbors = #neighbors
+    term.setcol(colors.white, colors.black)
     while #neighbors > 0 do
+        term.setCursorPos(1,1)
+        term.write(tostring(processed).."/"..tostring(#totalneighbors))
         local cn = table.remove(neighbors, 1)
         local cx,cz = cn[1],cn[2]
         local newneigh = fill_getneighbors(cx,y,cz, sx,sz, inittype,buf)
         for _,v in pairs(newneigh) do
             table.insert(neighbors, v)
+            totalneighbors = totalneighbors + 1
         end
         buf[posasstring(cx,y,cz)] = ntype
+        processed = processed + 1
     end
 end
 local function newdesign()