TPT Cockroaches element

--[[

   Cockroach element v 1.0

   Blocks pressure and temperature and it's a particle.
   It's also a powder and a solid at the same time!
   (cool it down to 0.00 C or below to make it a solid)

   okay until this doesn't work let's do it differently
   I can't get pressure blocking without TTAN's update function, so let's
   just use TTAN itself?

local el = elements.allocate("packedbread", "COCK")
elements.element(el, elements.element(elements.DEFAULT_PT_TTAN))
elements.property(el, "Weight", "45")
elements.property(el, "State", elements.ST_SOLID)
elements.property(el, "HeatConduct", "0")
elements.property(el, "Meltable", "0")
elements.property(el, "Hardness", "0")
elements.property(el, "Gravity", "1")
elements.property(el, "Falldown", "1")
elements.property(el, "Diffusion", "1")
elements.property(el, "Properties", bit.bor(elements.TYPE_PART, elements.PROP_BLACK, elements.PROP_NOAMBHEAT, elements.PROP_NEUTABSORB))
elements.property(el, "Name", "COCK")
elements.property(el, "Description", "Cockroaches. Invulnerable. Don't conduct heat or pressure.")
elements.property(el, "Colour", 0xDEADBEEF)
elements.property(el, "MenuVisible", 1)
elements.property(el, "MenuSection", elements.SC_SPECIAL)
--]]--

     tpt.el.ttan.colour = 0xDEADBEEF
       tpt.el.ttan.name = "COCK"
tpt.el.ttan.description = "Cockroaches. Survive anything. Block everything."
   tpt.el.ttan.meltable = 0
   tpt.el.ttan.hconduct = 0
     tpt.el.ttan.weight = 45
    tpt.el.ttan.gravity = 1
   tpt.el.ttan.falldown = 1
  tpt.el.ttan.diffusion = 1
 tpt.el.ttan.properties = bit.bor(elements.TYPE_PART, elements.PROP_BLACK, elements.PROP_NOAMBHEAT, elements.PROP_NEUTABSORB)
   tpt.el.ttan.msection = elements.SC_SPECIAL

function el_Update(index, partx, party, surround_space, nt)
  -- Stand still stolen from EXOT
  if sim.partProperty(index, "temp") < 273.15 then
    sim.partProperty(index, "vx", 0)
    sim.partProperty(index, "vy", 0)
  end

  --[[--
  -- Pressure blocking stolen from TTAN
  local ttan = 0
  if nt <= 2 then
    ttan = 2
  else if sim.partProperty(index, "tmp") then
    ttan = 2
  else if nt <= 6 then
    for ry=-1,1,1 do
      for rx=-1,1,1 do
        if sim.partProperty(sim.partID(x, y), "type") == "TTAN" then
          ttan = ttan + 1
        end
      end
    end
  end
  if ttan >= 2 then
    --!! waits for pv blocking code


  end
  --]]--
  return 0
end
tpt.element_func(el_Update, tpt.element("ttan"))--, el)