CC Number display

-- Numbers
-- by SukaiPoppuGo

-- Pixel API Wizard
os.loadAPI("/api/pixel.lua")
if not pixel then
    local confirm
    repeat
        print("Pixel API required")
        print("pastebin get Fa9KJqS4 /api/pixel.lua")
        print("Download ? Y/N")
        confirm = string.lower(read())
        if confirm ~= "y" and confirm ~= "n" then
            printError(confirm, "Invalid\n")
        end
    until confirm == "y" or confirm == "n"
    if confirm == "y" then
        shell.run("pastebin get Fa9KJqS4 /api/pixel.lua")
        sleep(1)
        os.loadAPI("/api/pixel.lua")
        if not pixel then
            printError("Setup failed..")
        end
    else
        print("Abort")
        return
    end
end
-- End Wizard

--Pocket screen
--local screenW, screenH = term.getSize()
local screenW, screenH = 26, 20
-- Native char pixel: 26 x 20 borderless ------------------->  88 outline borderless
-- With pixel API   : 26 x 30 borderless -> 24 x 28 framed -> 108 outline borderless -> 100 outline framed
-- With blittle API : 52 x 60 borderless -> 48 x 54 framed -> 220 outline borderless -> 200 outline framed

local _n = {
{"000","ff0","000","000","0f0","000","000","000","000","000",},
{"0f0","ff0","ff0","ff0","0f0","0ff","0ff","ff0","0f0","0f0",},
{"0f0","ff0","000","000","000","000","000","ff0","000","000",},
{"0f0","ff0","0ff","ff0","ff0","ff0","0f0","ff0","0f0","ff0",},
{"000","ff0","000","000","ff0","000","000","ff0","000","000",},
}
local tNum = {}
for i=0,9 do
    tNum[i] = pixel.compute({_n[1][i],_n[2][i],_n[3][i],_n[4][i],_n[5][i]})
end

function test()
    term.clear()
    local x,y = 4,6
    for i=0,9 do
        term.setCursorPos(x + ((i%5)*4), i > 4 and y+6 or y)
        pixel.draw(tNum[i])
    end
    term.setCursorPos(3,18)
    read()
end

local maxLen = 6
function display(num, x, y)
    assert(tonumber(num), string.format([[! "%s" NaN]], num))
    assert(string.len(tostring(num)) <= 6, string.format([[! "%s" too long (5 digits)]], num))

    --debug
    term.setCursorPos(1,y < 10 and 2 or 17)
    term.clearLine()
    print("num:", num, "s:", tostring(num), "n:", tonumber(num))
    term.setCursorPos(1,y < 10 and 3 or 18)
    term.clearLine()
    term.write("split: ")
    num = string.sub(tostring(num)..string.rep(" ",maxLen),1,maxLen)
    local line = {"","","","",""}
    for i=1,string.len(num) do
        if string.sub(num,i,i) == " " then
            local pad = i == string.len(num) and "" or " "
            line[1] = line[1].." "..pad
            line[2] = line[2].." "..pad
            line[3] = line[3].." "..pad
            line[4] = line[4].." "..pad
            line[5] = line[5].." "..pad
        elseif i == 1 and tonumber(num) < 0 then --nombre négatif
            line = string.len(num) == maxLen and {" ff "," ff "," 00 "," ff "," ff "} or {"fff ","fff ","000 ","fff ","fff "}
            term.write("-")
        else
            term.write(tonumber(string.sub(num,i,i)).." ")
            local n = tonumber(string.sub(num,i,i))
            local pad = i == string.len(num) and "" or " "
            line[1] = line[1].._n[1][n+1]..pad
            line[2] = line[2].._n[2][n+1]..pad
            line[3] = line[3].._n[3][n+1]..pad
            line[4] = line[4].._n[4][n+1]..pad
            line[5] = line[5].._n[5][n+1]..pad
        end
    end
    term.setCursorPos(x, y)
    pixel.draw(pixel.compute(line))
end

function alignLeft()
    return margin
end
function alignCenter(v)
    local w = string.len(tostring(v))*4
    return math.floor((screenW - w) / 2)
end
function alignRight(v, margin)
    local w = string.len(tostring(v))*4
    return screenW - w - margin
end


term.clear()
while true do
    local p = pocket.getEntity()
    term.clear()
    term.setTextColor(colors.gray)
    display(math.floor(p.x), alignCenter(math.floor(p.x), 4), 6)
    display(math.floor(p.z), alignCenter(math.floor(p.z), 4), 12)
    sleep(.1)
end