enterier

local function goTillWall()
    while turtle.detect()==false do
        turtle.forward()
    end
end

local function goTillFloor()
    while turtle.detectDown()==false do
        turtle.down()
    end
end

local function countDistance()
    local count=1
    while turtle.detect()==false do
        turtle.forward()
        count=count+1
    end
    return count
end

local function countHeight()
    local count=1
    while turtle.detectUp()==false do
        turtle.up()
        count=count+1
    end
    return count
end

local function getInvCount()
    local itemCount=0
    local slot=1
    while slot<=16 do
        turtle.select(slot)
        itemCount=itemCount+turtle.getItemCount()
        slot=slot+1
    end
    return itemCount
end

goTillWall()
turtle.turnLeft()
goTillWall()
turtle.turnLeft()
local x=0
local z=0
local y=0

x=countDistance()
turtle.turnLeft()
z=countDistance()
goTillFloor()
y=countHeight()

print("Your room's dimension is the following x:",x," z:",z," y:",y)
print("\nPut ",x*y*2+x*z*2+z*y*2, " blocks inside me and press enter, if the amount of blocks doesn't fit at once. I' ll stop when I ran out.")
read()

local blocks=0
blocks=getInvCount()
print("\n Blocks inside:",blocks)
read()