Configuration

Create an LGSCopy Anchor Link

Create an LGS by calling new EngineLgs() with an options object. storage is the only required option.

import { EngineLgs, InMemoryStorage } from "@slot-engine/lgs"
import { game as MyGame } from "../../path-to/my-game"

const lgs = new EngineLgs({
  storage: new InMemoryStorage(),
  games: [MyGame],
  port: 7771,
  defaultCurrency: "EUR",
  balance: { starting: 500 },
  bets: {
    min: 0.2,
    max: 200,
    step: 0.2,
    default: 1,
    levels: [0.2, 1, 2, 5, 10, 50, 100, 200],
  },
})

lgs.start()

EngineLgs OptionsCopy Anchor Link

Money in the options is in major units. 1 is one unit of the currency, 0.1 is ten cents. Over HTTP the LGS reports every amount as an integer with six decimals. See Money.

BetsCopy Anchor Link

ValidationCopy Anchor Link

The constructor throws Invalid LGS options in these cases:

• defaultLanguage is not in languages, or defaultCurrency is not in currencies.
• bets.step is zero or negative.
• bets.min is above bets.max.
• bets.default or an entry of bets.levels is outside min and max, or not a multiple of step.
• balance.starting or an entry of balance.options is negative.

Languages and currenciesCopy Anchor Link

The default languages are the 17 languages that Engine supports: ar, da, de, en, es, fi, fr, hi, id, ja, ko, pl, pt, ru, tr, vi, zh. The package exports them as LANGUAGES.

The default currencies are the 49 currencies that Engine supports. The package exports them as CURRENCY_CODES, and as CURRENCIES, a table with the symbol and the number of decimals of each currency.

import { CURRENCIES, CURRENCY_CODES, LANGUAGES } from "@slot-engine/lgs"

CURRENCIES.EUR // { symbol: "€", decimals: 2 }
CURRENCY_CODES // ["USD", "CAD", "JPY", "EUR", ...]
LANGUAGES // ["ar", "da", "de", ...]

JurisdictionCopy Anchor Link

EngineLgs returns these flags in the config.jurisdiction object of the authenticate response. Every flag defaults to false and minimumRoundDuration to 0.

MoneyCopy Anchor Link

Over HTTP every amount is an integer with six decimals, whatever the currency: 1000000 is 1.00. The options and the session body take major units instead, so you write balance: { starting: 500 } for 500.00.

The package exports the conversion:

import { MONEY_SCALE, toAmount, toMajor } from "@slot-engine/lgs"

MONEY_SCALE // 1000000
toAmount(2.5) // 2500000
toMajor(2500000) // 2.5

Standalone serverCopy Anchor Link

lgs.start() listens on port and resolves with the port and a close() function.

const server = await lgs.start()
server.port // 7771
await server.close()

On start the LGS logs its address and the number of registered games:

⚡️ Slot Engine LGS (Engine) is running on http://localhost:7771
:: 2 games loaded

To serve the LGS inside Slot Engine Panel, pass it to createPanel() instead of calling start(). See the panel configuration.