Healing Pod ComputerCraft 1.7

--Instructions:
    --1. Create a 5x5 (on the inside) pod. (Filled with water)
    --2. Put a Command Computer in the middle block in the floor.
    --3. Do "pastebin get F3gqLfPf startup" without quotes to get the program.
    --4. Put a leather cap in your inventory (not on your head)
    --5. Walk into the pod, and wait to be healed!
--IMPORTANT INFORMATION!
    --Make sure you don't edit ANYTHING except for the configuration! If you do, things may break!
    --Be warned, it only checks once for lava, or water, you have to reboot the program if you want to change it.
-------------------------------------------------------------------------
--Configuration!
--Make sure to spell "false" right! (No quotes, of course!)
  --Negative Effects
      slowActive = true
      miningFatigueActive = true
      nauseaActive = true
      witherActive = true
  --Positive Effects
      resistanceActive = true
      hasteActive = true
      strengthActive = true
      foodActive = true
      extraHealthActive = true
  --Other Options
      verbose = true --This just puts in the console the player who is being healed / damaged.
--End of Configuration
-------------------------------------------------------------------------
--Functions
function heal()
  if commands.exec("clear @p [r=2] leather_helmet 0 0") then
    if !lavaNotWater then
      commands.exec("effect @p [r=2] 13 1 1") --Water Breathing KEEP THIS! Otherwise you will drown!
    else
      commands.exec("effect @p [r=2] 12 1 1") --Fire Resistance KEEP THIS TOO!
    end
    commands.exec("effect @p [r=2] 10 1 255") -- Regeneration (Duh keep this :P)
    if resistanceActive then
      commands.exec("effect @p [r=2] 11 30 3")  --Resistance Effect (Configurable!)
    end
    if hasteActive then
      commands.exec("effect @p [r=2] 3 30 15")  --Haste Effect (Configurable!)
    end
    if strengthActive then
      commands.exec("effect @p [r=2] 5 30 15")  --Strength Effect (Configurable!)
    end
    if foodActive then
      commands.exec("effect @p [r=2] 23 30 255")  --Saturation Effect (Configurable!)
    end
    if extraHealthActive then
      commands.exec("effect @p [r=2] 21 30 5")  --Extra Health Bar (Configurable!)
    end
    commands.exec("give @p [r=2] leather_helmet 0 1")
    --Mind you, this can get VERY annoying, because of
    --the popping sound from picking up the helmet :/
    --Think of it as an injection of air ;)
  else
    if slowActive then
      commands.exec("effect @p [r=2] 2 1 3")  --Slowness Effect if you don't bring in a leather helmet! (Configurable!)
    end
    if miningFatigueActive then
      commands.exec("effect @p [r=2] 4 1 255") --Mining Fatigue Effect if you don't bring in a leather helmet! (Configurable!)
    end
    if nauseaActive then
      commands.exec("effect @p [r=2] 9 1 255") --Nausea Effect if you don't bring in a leather helmet! (Configurable!)
    end
    if witherActive then
      commands.exec("effect @p [r=2] 20 1 5") --Wither Effect if you don't bring in a leather helmet! (Configurable!)
    end
end
----------------------
function checkThePlayer()
  player = commands.exec("testfor @p [r=2]")
  print(player .." is inside the chamber!")
end
---------------------
function checkForLava()
  if commands.exec("testforblock lava ~ ~1 ~") then
    lavaNotWater = true
  end
---------------------
function main()
  while true do
    heal()
    if verbose then
      checkThePlayer()
    end
    sleep(1)
  end
end
-------------------
--Main Program Beginning
checkForLava()
--The reason I don't put it in the main loop,
--is for TPS optimization.
--If I were to check every tick, it would
--cause massive lag. Sorry!
while true do
  main()
end
--Main Program End