Ender Chest Chooser

-- Ender Chest chooser
local screenDim = {}
screenDim.x, screenDim.y = term.getSize()
local players = {eniallator = 3584, YaEyezOnMe = 2816, eriyo2000 = 267}
local numPlayers = 3
local selectedPlayer = "no one"
local turtleID = 48
local boxWidth = math.floor(screenDim.x /numPlayers +0.5)
local displayTab = {}
local nameDisplayLimit = boxWidth -2
local community = {name = "Community", id = 1536}
community.button = {screenDim.x -#community.name -1, 1, screenDim.x, 1, colours.lime, community.name, community.name}

rednet.open("right")
term.setBackgroundColor(colours.black)
shell.run("clear")

local function makeDisplayTab()
  for k,v in pairs(players) do
    table.insert(displayTab,{#displayTab *boxWidth +2, 3, (#displayTab +1) *boxWidth -1, screenDim.y -1, colours.blue, k:sub(1, nameDisplayLimit), k})
  end
end

makeDisplayTab()

-- tab format {x1,y1,x2,y2,background colour, substringed app name (for display purposes), original app name}
local function fillArea(tab)
  term.setBackgroundColor(tab[5])

  for i=0,tab[4]-tab[2] do
    local j = 0

    while j <= tab[3]-tab[1] do
      term.setCursorPos(tab[1]+j,tab[2]+i)

      if tab[6] and math.floor(j-((tab[3]-tab[1])/2)+#tab[6]/2) == 0 and math.floor(i-(tab[4]-tab[2])/2) == 0 then
        -- If statement seeing whether the iterators have hit the place where it should be writing the word out

        term.write(tab[6])
        j = j + #tab[6]
      else

        j = j + 1
        term.write(" ")
      end
    end
  end
end

local function displayScreen()
  fillArea({1,1,screenDim.x,1,colours.black})
  term.setCursorPos(1,1)
  term.write("Selected: " .. selectedPlayer)
  fillArea(community.button)

  for i=1,#displayTab do
    fillArea(displayTab[i])
  end
end

local function detectClick(tab, x, y)
  if tab[1] <= x and tab[3] >= x and tab[2] <= y and tab[4] >= y then
    return tab[7]
  end
end

local function clickDetectDisplay(x, y)
  for i=1, #displayTab do
    if detectClick(displayTab[i], x, y) then
      return displayTab[i][7]
    end
  end

  return false
end

local function checkDone()
  local done = false

  repeat
    local received = {}
    received.id, received.msg = rednet.receive()

    if received.id == turtleID and received.msg == "done" then
      done = true
    end

  until done
end

while true do
  makeDisplayTab()
  displayScreen()

  if justSent then
    checkDone()
    justSent = false
  end

  local event = {}
  event.type, event.button, event.x, event.y = os.pullEvent()

  if event.type == "mouse_click" or event.type == "monitor_touch" then
    local clickedPlayer = clickDetectDisplay(event.x, event.y)

    if clickedPlayer then
      selectedPlayer = clickedPlayer
      rednet.send(turtleID, players[clickedPlayer])
      justSent = true

    elseif detectClick(community.button, event.x, event.y) then
      selectedPlayer = community.name
      rednet.send(turtleID, community.id)
      justSent = true
    end
  end
end