• // Simple Trading Script v0.06 (c) 2012 NeatPortal.com
  // WARNING: This script requires version 2720+ to run
  //
  // The script tries to gain more resources by using spread between bid and ask prices
  // Algorithm is simplified, but should work reasonably well under broad range of conditions
  //
  // Uncomment to enable auto start
  //label autorun
  //
  // Extra resources to reserve (in addition to city's reserved resources)
  //        food, wood, stone, iron, gold:
  extra = [  10m,   2m,    5m,   2m,    0 ]
  
  // How aggressive we want to be (lower number would increase trading gains at the cost of potentially slower trade execution), from 0% to 49%
  aggr = 5%
  
  // Only trade if we expect this much gain
  gain = 1%
  
  // ===== NOTHING TO CONFIGURE BELOW THIS LINE =====
  delay = 10
  config trade:0
  res = 0
  comm = 0.5%
  maxBatch = 9999999
  maxRes = 990B
  
  label nextres
  if !m_context.marketReady() goto nextres
  resName = ResourceIntNames[res]
  if city.resource[resName].amount > maxRes goto tryother
  reserved = city.reservedResource
  resGold = max(reserved.gold + extra[4], (city.resource.gold + reserved.gold + extra[4]) / 2)
  buyVolume = 0
  label trading
  if city.tradesArray.length > 8 execute "canceltrade " + city.tradesArray[0].id
  if city.tradesArray.length > 8 goto trading
  prices = [ Price(res, aggr), Price(res, 1 - aggr), Price(res, aggr) * (1 + comm), Price(res, 1 - aggr) * comm ]
  if (prices[1] + prices[3]) / prices[2] < (1 + gain) goto trynext
  sellVolume = floor(min(city.resource[resName].amount - reserved[resName] - extra[res], (city.resource.gold - resGold) / prices[3], 1.1 * maxBatch - buyVolume / 10))
  if sellVolume <= 0 sellVolume = max(0, floor(min(1, city.resource[resName].amount - reserved[resName] - extra[res], (city.resource.gold - 1) / prices[3], 1.1 * maxBatch - buyVolume / 10)))
  if sellVolume > 0 execute "sell " + res + " " + min(sellVolume, maxBatch) + " " + prices[1]
  buyVolume = max(0, floor((city.resource.gold - resGold) / prices[2]))
  if buyVolume > 0 execute "buy " + res + " " + min(buyVolume, maxBatch) + " " + prices[0]
  if city.tradesArray.length < 8 if buyVolume + sellVolume > 0 goto trading
  label tryother
  execute "sleep " + delay
  label trynext
  res = (res + 1) MOD 4
  goto nextres

ScriptExamples