CookieClicker.coffee

R = 2.0 # Cookies per second
C = 500.0 # Cost of a farm
F = 4.0 # CPS per farm owned
X = 2000.0 # Cookies needed to win

elapsedTime = 0.0
cookies = 0.0

timeForNextFarm = ->
  cookiesNeeded = C - cookies
  time = cookiesNeeded/R
  return time

timeUntilWin = ->
  return (X-cookies)/R

timeToWinIfFarmIsPurchased = ->
  new_cookies = cookies-C
  rate = R + F
  time = (X-new_cookies)/rate
  return time

purchaseFarm = ->
  return if cookies < C
  elapsedTime = timeForNextFarm() + elapsedTime
  R = R + F
  cookies = cookies - C

tick = ->
  elapsedTime++
  cookies = cookies + R

  if cookies >= X
    return console.log "Won in #{elapsedTime} seconds"

  if timeToWinIfFarmIsPurchased() < timeUntilWin()
    purchaseFarm()
  
  process.nextTick tick

tick()