guyMover v0.1

local x,y = 5,5
local oldx,oldy = 5,5
scancode
local left_key, right_key, up_key, down_key = 203, 205, 200, 208
local quit_key = 45

maxx, maxy = term.getSize()

function drawGuy()
   term.setCursorPos(x,y)
   term.write("@")
end
function eraseGuy()
   term.setCursorPos(oldx,oldy)
   term.write(" ")
end
function moveGuy(code)
  if ( code == left_key ) then x = x - 1 end
  if ( code == right_key ) then x = x + 1 end
  if ( code == up_key ) then y = y - 1 end
  if ( code == down_key ) then y = y + 1 end
  x = max(1,x)
  x = min(maxx,x)
  y = max(1,y)
  y = min(maxy,y)

end



term.clear()
drawGuy()

while scancode ~= quit_key do

  event, scancode = os.pullEvent("key")

  if ( scancode == left_key or scancode == right_key or scancode == up_key or scancode == down_key ) then
    oldx = x
    oldy = y
    moveGuy(scancode)
    eraseOldGuy()
    drawGuy()
  end

end