JoJa-Shop

local config_path = "shop.config"

function readConfig(file_path)
    if file_path ~= nil and fs.exists(file_path) then
        print("file found.")
        if string.find(file_path.."",".config") then
            print("reading config...")
            shell.run(file_path)
            print("checking monitor...")
            if monSide == nil or peripheral.getType(monSide) ~= "monitor" then
                print("monitor unavailable.")
                return false
            else
                print("monitor available.")
                print("checking sensor...")
                if senSide == nil or peripheral.getType(senSide) ~= "sensor" or senCoords == nil or senField == nil then
                    print("sensor unavailable.")
                    return false
                else
                    print("sensor available.")
                    if bCol == nil then
                        print("no backgroundcolor found.")
                        bCol = colors.lightGray
                    else
                        print("backgroundcolor found.")
                    end
                    print("backgroundcolor set to "..bCol..".")
                print("reading finished")
                return true
                end
            end
        else
            print("wrong format.")
        end
    else
        print("file not found.")
    end
    return false
end

function checkSensor()
    local xP1 = senCoords[1]+senField[1][1]
    local xP2 = senCoords[1]+senField[2][1]
    if xP2 > xP1 then
        local temp = xP1
        xP1 = xP2
        xP2 = temp
    end
    local yP1 = senCoords[2]+senField[1][2]
    local yP2 = senCoords[2]+senField[2][2]
        if yP2 > yP1 then
        local temp = yP1
        yP1 = yP2
        yP2 = temp
    end
    local zP1 = senCoords[3]+senField[1][3]
    local zP2 = senCoords[3]+senField[2][3]
        if zP2 > zP1 then
        local temp = zP1
        zP1 = zP2
        zP2 = temp
    end
    local targets = sen.getTargets()
    for k,v in pairs(targets) do
        if v.Name == "Player" and  v.Position.X <= xP1 and v.Position.X >= xP2 and v.Position.Y <= yP1 and v.Position.Y >= yP2 and v.Position.Z <= zP1 and v.Position.Z >= zP2 then
            local player_name = k
            return k
        end
    end
    return nil
end

function JoJa(xP,yP)
  m.setCursorPos(xP,yP)
  m.setBackgroundColor(colors.gray)
  m.setTextColor(colors.cyan)
  m.write("Jo")
  m.setTextColor(colors.orange)
  m.write("Ja ")
  m.setTextColor(colors.lightGray)
  m.write("Productions")
end

function Background(col)
  m.setBackgroundColor(col)
  for xP = 1,xMax do
    for yP = 1,yMax do
      m.setCursorPos(xP,yP)
      m.write(" ")
    end
  end
end

readConfig(config_path)
print(checkSensor)
local user = checkSensor()
while user == nil do
    delay(.5)
    user = checkSensor()
end
print(user)