kiwi

local mat = peripheral.wrap("bottom")
if mat == nil then return end
local mon = peripheral.wrap("top")
if mon == nil then return end
--mon.clear()

local max, cur, per = 0, 0, 0
local x, y = mon.getSize()

function checkPower()
    max = mat.getMaxEnergy()
    cur = mat.getEnergy()
    per = math.floor((cur/max)*100+0.5)
   -- mon.write(per)
end

function writeMon()
    mon.setBackgroundColor(colors.black)
    mon.clear()
    mon.setCursorPos(1,1)
    Text("  Kiwi-Powerstatus  ", 1, colors.white, colors.red)
    Text(" Füllstand: " .. per .. "% ", y-5, colors.black, colors.red)
end

function barDraw()
    local bar = math.floor((cur/max)*(x-2))+0.5
    mon.setCursorPos(2,y-4)
    mon.setBackgroundColor(colors.blue)
    mon.write(string.rep(" ", x-2))

    mon.setCursorPos(2, y-4)
    mon.setBackgroundColor(colors.red)
    mon.write(string.rep(" ", bar))
end

function Text(text, line, colB, colT)
    mon.setBackgroundColor(colB)
    mon.setTextColor(colT)
    local ts = string.len(text)
    local dif = math.floor(x-ts)
    local _x = math.floor(dif/2)
    mon.setCursorPos(_x+1, line)
    mon.write(text)
end

while true do
    checkPower()
    writeMon()
    barDraw()
    print(cur .. "/" .. max.." - "..per.."%")
    sleep(1)
end