godeeper

--GoDeeper by Konlab
ver = "1.0"
prev = 5
cur = 5
next = 5
pos = 5
function set(xtt)
  term.setCursorPos(xtt,9)
  term.setBackgroundColor(colors.black)
  term.write("o")

end
function go()
  prev = cur
  cur = next
  next = math.random(2,25)
  level(prev,1)
  level(cur,2)
  level(next,3)
end
function level(xto,n)--n==1 -> old n==2 -> current n==3 -> next
  --if n == 1 then
--  n=5
    if n > 4 then
      error("n>4")
    end
    yto = n * 5


    term.setBackgroundColor(colors.brown)
    term.setCursorPos(1,yto)
    term.setBackgroundColor(colors.lightGray)
    term.setCursorPos(xto,yto)
    term.write(" ")

end
function keyy()
  evvv = "char"
  chh = "a"
  evvv,chh = os.pullEvent("char")
--  chh = read()
  if chh == "a" then
    pos = pos - 1
  elseif chh == "d" then
    pos = pos + 1
  end
end
function game()
  term.setBackgroundColor(colors.lightGray)
  term.clear()
  term.setCursorPos(1,1)
  while true do
    if cur == pos then
    go()
    end
    keyy()
    set()


  end
--  print("press any key")
  os.pullEvent("key")

end
function drawMenu()
  term.setBackgroundColor(colors.brown)
  term.clear()
  term.setCursorPos(1,1)
  term.setBackgroundColor(colors.green)
  term.write("Go Deeper game by Konlab  ")
  term.setCursorPos(1,2)
  print("                            ")
  print()
  term.setBackgroundColor(colors.cyan)
  print("Begin game                ")
  print()
  print("Contrlos&Credits          ")
  print()
  print("Exit game                 ")


end
function credits()
term.clear()
term.setCursorPos(1,1)
print("GoDeeper - Controls")
print("A;D - go left/right")
print()
print("GoDeeper - Credits")
print("GoDeeper was created by Konlab")
print("Current version: "..ver)
print("Click to continue")
os.pullEvent("mouse_click")
end
function main()
  while true do
    drawMenu()
    event,button,x,y = os.pullEvent("mouse_click")
    if y == 8 then
      return
    elseif y == 6 then
      credits()
    elseif y == 4 then
      game()
    end
  end
end

ok,err = pcall(main)
if err == "Terminated" then
  print("Terminated")
  return
end
if ok then
term.setBackgroundColor(colors.black)
term.setTextColor(colors.white)
term.clear()
term.setCursorPos(1,1)
print("Thanks for using GoDeeper by Konlab")
return
else
  term.setBackgroundColor(colors.black)

  term.clear()
  term.setCursorPos(1,1)
  print("Crashed:"..err)

end